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1 | |||
1111 | werner | 2 | #include "global.h" |
3 | #include "saplings.h" |
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4 | |||
5 | #include "globalsettings.h" |
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6 | #include "model.h" |
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7 | #include "resourceunit.h" |
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8 | #include "resourceunitspecies.h" |
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9 | #include "establishment.h" |
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10 | #include "species.h" |
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11 | #include "seeddispersal.h" |
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12 | |||
1113 | werner | 13 | double Saplings::mRecruitmentVariation = 0.1; // +/- 10% |
14 | double Saplings::mBrowsingPressure = 0.; |
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1111 | werner | 15 | |
1113 | werner | 16 | |
1111 | werner | 17 | Saplings::Saplings() |
18 | { |
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19 | |||
20 | } |
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21 | |||
22 | void Saplings::setup() |
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23 | { |
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1159 | werner | 24 | //mGrid.setup(GlobalSettings::instance()->model()->grid()->metricRect(), GlobalSettings::instance()->model()->grid()->cellsize()); |
25 | FloatGrid *lif_grid = GlobalSettings::instance()->model()->grid(); |
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1111 | werner | 26 | // mask out out-of-project areas |
27 | HeightGrid *hg = GlobalSettings::instance()->model()->heightGrid(); |
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1159 | werner | 28 | for (int i=0; i<lif_grid->count(); ++i) { |
29 | SaplingCell *s = cell(lif_grid->indexOf(i), false); // false: retrieve also invalid cells |
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30 | if (s) { |
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31 | if (!hg->valueAtIndex(lif_grid->index5(i)).isValid()) |
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32 | s->state = SaplingCell::CellInvalid; |
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33 | else |
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34 | s->state = SaplingCell::CellFree; |
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35 | } |
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36 | |||
1111 | werner | 37 | } |
38 | |||
39 | } |
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40 | |||
41 | void Saplings::establishment(const ResourceUnit *ru) |
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42 | { |
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43 | HeightGrid *height_grid = GlobalSettings::instance()->model()->heightGrid(); |
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44 | FloatGrid *lif_grid = GlobalSettings::instance()->model()->grid(); |
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45 | |||
1118 | werner | 46 | QPoint imap = ru->cornerPointOffset(); // offset on LIF/saplings grid |
47 | QPoint iseedmap = QPoint(imap.x()/10, imap.y()/10); // seed-map has 20m resolution, LIF 2m -> factor 10 |
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1111 | werner | 48 | |
1158 | werner | 49 | for (QList<ResourceUnitSpecies*>::const_iterator i=ru->ruSpecies().constBegin(); i!=ru->ruSpecies().constEnd(); ++i) |
50 | (*i)->saplingStat().clearStatistics(); |
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51 | |||
52 | double lif_corr[cPxPerHectare]; |
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53 | for (int i=0;i<cPxPerHectare;++i) |
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54 | lif_corr[i]=-1.; |
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55 | |||
1164 | werner | 56 | int species_idx; |
57 | QVector<int>::const_iterator sbegin, send; |
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58 | ru->speciesSet()->randomSpeciesOrder(sbegin, send); |
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59 | for (QVector<int>::const_iterator s_idx=sbegin; s_idx!=send;++s_idx) { |
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1111 | werner | 60 | |
61 | // start from a random species (and cycle through the available species) |
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1164 | werner | 62 | species_idx = *s_idx; |
1111 | werner | 63 | |
64 | ResourceUnitSpecies *rus = ru->ruSpecies()[species_idx]; |
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65 | // check if there are seeds of the given species on the resource unit |
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66 | float seeds = 0.f; |
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1118 | werner | 67 | Grid<float> &seedmap = const_cast<Grid<float>& >(rus->species()->seedDispersal()->seedMap()); |
1111 | werner | 68 | for (int iy=0;iy<5;++iy) { |
69 | float *p = seedmap.ptr(iseedmap.x(), iseedmap.y()); |
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70 | for (int ix=0;ix<5;++ix) |
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71 | seeds += *p++; |
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72 | } |
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73 | // if there are no seeds: no need to do more |
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74 | if (seeds==0.f) |
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75 | continue; |
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76 | |||
77 | // calculate the abiotic environment (TACA) |
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78 | rus->establishment().calculateAbioticEnvironment(); |
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79 | double abiotic_env = rus->establishment().abioticEnvironment(); |
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80 | if (abiotic_env==0.) |
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81 | continue; |
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82 | |||
83 | // loop over all 2m cells on this resource unit |
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1159 | werner | 84 | SaplingCell *sap_cells = ru->saplingCellArray(); |
1111 | werner | 85 | SaplingCell *s; |
86 | int isc = 0; // index on 2m cell |
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87 | for (int iy=0; iy<cPxPerRU; ++iy) { |
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1159 | werner | 88 | //s = mGrid.ptr(imap.x(), imap.y()+iy); // ptr to the row |
89 | s = &sap_cells[iy*cPxPerRU]; // pointer to a row |
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90 | isc = lif_grid->index(imap.x(), imap.y()+iy); |
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1111 | werner | 91 | |
1158 | werner | 92 | for (int ix=0;ix<cPxPerRU; ++ix, ++s, ++isc) { |
1111 | werner | 93 | if (s->state == SaplingCell::CellFree) { |
94 | // is a sapling of the current species already on the pixel? |
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95 | // * test for sapling height already in cell state |
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96 | // * test for grass-cover already in cell state |
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1158 | werner | 97 | SaplingTree *stree=0; |
98 | SaplingTree *slot=s->saplings; |
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99 | for (int i=0;i<NSAPCELLS;++i, ++slot) { |
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100 | if (!stree && !slot->is_occupied()) |
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101 | stree=slot; |
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102 | if (slot->species_index == species_idx) { |
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103 | stree=0; |
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104 | break; |
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1111 | werner | 105 | } |
106 | } |
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107 | |||
1158 | werner | 108 | if (stree) { |
1111 | werner | 109 | // grass cover? |
1159 | werner | 110 | float seed_map_value = seedmap[lif_grid->index10(isc)]; |
1111 | werner | 111 | if (seed_map_value==0.f) |
112 | continue; |
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1159 | werner | 113 | const HeightGridValue &hgv = (*height_grid)[lif_grid->index5(isc)]; |
1111 | werner | 114 | float lif_value = (*lif_grid)[isc]; |
1158 | werner | 115 | |
116 | double &lif_corrected = lif_corr[iy*cPxPerRU+ix]; |
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117 | // calculate the LIFcorrected only once per pixel |
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118 | if (lif_corrected<0.) |
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119 | lif_corrected = rus->species()->speciesSet()->LRIcorrection(lif_value, 4. / hgv.height); |
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120 | |||
1111 | werner | 121 | // check for the combination of seed availability and light on the forest floor |
1158 | werner | 122 | if (drandom() < seed_map_value*lif_corrected*abiotic_env ) { |
123 | // ok, lets add a sapling at the given position (age is incremented later) |
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124 | stree->setSapling(0.05f, 0, species_idx); |
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125 | s->checkState(); |
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126 | rus->saplingStat().mAdded++; |
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1111 | werner | 127 | |
1158 | werner | 128 | } |
1111 | werner | 129 | |
130 | } |
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131 | |||
132 | } |
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133 | } |
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134 | } |
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135 | |||
136 | } |
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137 | |||
138 | } |
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1113 | werner | 139 | |
140 | void Saplings::saplingGrowth(const ResourceUnit *ru) |
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141 | { |
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142 | HeightGrid *height_grid = GlobalSettings::instance()->model()->heightGrid(); |
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143 | FloatGrid *lif_grid = GlobalSettings::instance()->model()->grid(); |
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144 | |||
1159 | werner | 145 | QPoint imap = ru->cornerPointOffset(); |
1115 | werner | 146 | bool need_check=false; |
1159 | werner | 147 | SaplingCell *sap_cells = ru->saplingCellArray(); |
1113 | werner | 148 | for (int iy=0; iy<cPxPerRU; ++iy) { |
1159 | werner | 149 | //SaplingCell *s = mGrid.ptr(imap.x(), imap.y()+iy); // ptr to the row |
150 | SaplingCell *s = &sap_cells[iy*cPxPerRU]; // ptr to row |
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151 | int isc = lif_grid->index(imap.x(), imap.y()+iy); |
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1113 | werner | 152 | |
153 | for (int ix=0;ix<cPxPerRU; ++ix, ++s, ++isc) { |
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154 | if (s->state != SaplingCell::CellInvalid) { |
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1115 | werner | 155 | need_check=false; |
1113 | werner | 156 | for (int i=0;i<NSAPCELLS;++i) { |
157 | if (s->saplings[i].is_occupied()) { |
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158 | // growth of this sapling tree |
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159 | const HeightGridValue &hgv = (*height_grid)[height_grid->index5(isc)]; |
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160 | float lif_value = (*lif_grid)[isc]; |
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161 | |||
1159 | werner | 162 | need_check |= growSapling(ru, *s, s->saplings[i], isc, hgv.height, lif_value); |
1113 | werner | 163 | } |
164 | } |
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1115 | werner | 165 | if (need_check) |
166 | s->checkState(); |
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1113 | werner | 167 | } |
168 | } |
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169 | } |
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170 | |||
1158 | werner | 171 | |
172 | |||
173 | |||
174 | // store statistics on saplings/regeneration |
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175 | for (QList<ResourceUnitSpecies*>::const_iterator i=ru->ruSpecies().constBegin(); i!=ru->ruSpecies().constEnd(); ++i) { |
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176 | (*i)->saplingStat().calculate((*i)->species(), const_cast<ResourceUnit*>(ru)); |
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177 | (*i)->statistics().add(&((*i)->saplingStat())); |
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178 | } |
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1113 | werner | 179 | } |
180 | |||
1162 | werner | 181 | SaplingCell *Saplings::cell(QPoint lif_coords, bool only_valid, ResourceUnit **rRUPtr) |
1159 | werner | 182 | { |
183 | FloatGrid *lif_grid = GlobalSettings::instance()->model()->grid(); |
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184 | |||
185 | // in this case, getting the actual cell is quite cumbersome: first, retrieve the resource unit, then the |
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186 | // cell based on the offset of the given coordiantes relative to the corner of the resource unit. |
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187 | ResourceUnit *ru = GlobalSettings::instance()->model()->ru(lif_grid->cellCenterPoint(lif_coords)); |
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1162 | werner | 188 | if (rRUPtr) |
189 | *rRUPtr = ru; |
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1160 | werner | 190 | |
1159 | werner | 191 | if (ru) { |
192 | QPoint local_coords = lif_coords - ru->cornerPointOffset(); |
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193 | int idx = local_coords.y() * cPxPerRU + local_coords.x(); |
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194 | DBGMODE( if (idx<0 || idx>=cPxPerHectare) |
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195 | qDebug("invalid coords in Saplings::cell"); |
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196 | ); |
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197 | SaplingCell *s=&ru->saplingCellArray()[idx]; |
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198 | if (s && (!only_valid || s->state!=SaplingCell::CellInvalid)) |
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199 | return s; |
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200 | } |
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201 | return 0; |
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202 | } |
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203 | |||
1162 | werner | 204 | void Saplings::clearSaplings(const QRectF &rectangle, const bool remove_biomass) |
205 | { |
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206 | GridRunner<float> runner(GlobalSettings::instance()->model()->grid(), rectangle); |
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207 | ResourceUnit *ru; |
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208 | while (runner.next()) { |
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209 | SaplingCell *s = cell(runner.currentIndex(), true, &ru); |
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210 | if (s) { |
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1165 | werner | 211 | clearSaplings(s, ru, remove_biomass); |
212 | } |
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1162 | werner | 213 | |
1165 | werner | 214 | } |
215 | } |
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216 | |||
217 | void Saplings::clearSaplings(SaplingCell *s, ResourceUnit *ru, const bool remove_biomass) |
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218 | { |
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219 | if (s) { |
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220 | for (int i=0;i<NSAPCELLS;++i) |
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221 | if (s->saplings[i].is_occupied()) { |
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222 | if (!remove_biomass) { |
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223 | ResourceUnitSpecies *rus = ru->resourceUnitSpecies(s->saplings[i].species_index); |
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224 | if (!rus && !rus->species()) { |
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225 | qDebug() << "Saplings::clearSaplings(): invalid resource unit!!!"; |
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226 | return; |
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1162 | werner | 227 | } |
1165 | werner | 228 | rus->saplingStat().addCarbonOfDeadSapling( s->saplings[i].height / rus->species()->saplingGrowthParameters().hdSapling * 100.f ); |
1162 | werner | 229 | } |
1165 | werner | 230 | s->saplings[i].clear(); |
231 | } |
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232 | s->checkState(); |
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1162 | werner | 233 | |
1165 | werner | 234 | } |
235 | |||
236 | } |
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237 | |||
238 | int Saplings::addSprout(const Tree *t) |
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239 | { |
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240 | if (t->species()->saplingGrowthParameters().sproutGrowth==0.) |
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241 | return 0; |
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242 | SaplingCell *sc = cell(t->positionIndex()); |
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243 | if (!sc) |
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244 | return 0; |
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245 | clearSaplings(sc, const_cast<ResourceUnit*>(t->ru()), false ); |
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246 | SaplingTree *st=sc->addSapling(0.05f, 0, t->species()->index()); |
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247 | if (st) |
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248 | st->set_sprout(true); |
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249 | |||
250 | // neighboring cells |
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251 | double crown_area = t->crownRadius()*t->crownRadius() * M_PI; //m2 |
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252 | // calculate how many cells on the ground are covered by the crown (this is a rather rough estimate) |
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253 | // n_cells: in addition to the original cell |
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254 | int n_cells = static_cast<int>(round( crown_area / static_cast<double>(cPxSize*cPxSize) - 1.)); |
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255 | if (n_cells>0) { |
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256 | ResourceUnit *ru; |
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257 | static const int offsets_x[8] = {1,1,0,-1,-1,-1,0,1}; |
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258 | static const int offsets_y[8] = {0,1,1,1,0,-1,-1,-1}; |
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259 | int s=irandom(0,8); |
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260 | while(n_cells) { |
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261 | sc = cell(t->positionIndex()+QPoint(offsets_x[s], offsets_y[s]),true,&ru); |
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262 | if (sc) { |
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263 | clearSaplings(sc, ru, false ); |
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264 | SaplingTree *st=sc->addSapling(0.05f, 0, t->species()->index()); |
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265 | if (st) |
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266 | st->set_sprout(true); |
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267 | } |
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268 | |||
269 | s = (s+1)%8; --n_cells; |
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1162 | werner | 270 | } |
271 | } |
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1165 | werner | 272 | return 1; |
1162 | werner | 273 | } |
274 | |||
1113 | werner | 275 | void Saplings::updateBrowsingPressure() |
276 | { |
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277 | if (GlobalSettings::instance()->settings().valueBool("model.settings.browsing.enabled")) |
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278 | Saplings::mBrowsingPressure = GlobalSettings::instance()->settings().valueDouble("model.settings.browsing.browsingPressure"); |
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279 | else |
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280 | Saplings::mBrowsingPressure = 0.; |
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281 | } |
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282 | |||
1159 | werner | 283 | bool Saplings::growSapling(const ResourceUnit *ru, SaplingCell &scell, SaplingTree &tree, int isc, float dom_height, float lif_value) |
1113 | werner | 284 | { |
285 | ResourceUnitSpecies *rus = const_cast<ResourceUnitSpecies*>(ru->ruSpecies()[tree.species_index]); |
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286 | const Species *species = rus->species(); |
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287 | |||
288 | // (1) calculate height growth potential for the tree (uses linerization of expressions...) |
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289 | double h_pot = species->saplingGrowthParameters().heightGrowthPotential.calculate(tree.height); |
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290 | double delta_h_pot = h_pot - tree.height; |
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291 | |||
292 | // (2) reduce height growth potential with species growth response f_env_yr and with light state (i.e. LIF-value) of home-pixel. |
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293 | if (dom_height==0.f) |
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294 | throw IException(QString("growSapling: height grid at %1/%2 has value 0").arg(isc)); |
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295 | |||
296 | double rel_height = tree.height / dom_height; |
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297 | |||
298 | double lif_corrected = species->speciesSet()->LRIcorrection(lif_value, rel_height); // correction based on height |
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299 | |||
300 | double lr = species->lightResponse(lif_corrected); // species specific light response (LUI, light utilization index) |
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301 | |||
1118 | werner | 302 | rus->calculate(true); // calculate the 3pg module (this is done only if that did not happen up to now); true: call comes from regeneration |
303 | double f_env_yr = rus->prod3PG().fEnvYear(); |
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1113 | werner | 304 | |
1118 | werner | 305 | double delta_h_factor = f_env_yr * lr; // relative growth |
306 | |||
1113 | werner | 307 | if (h_pot<0. || delta_h_pot<0. || lif_corrected<0. || lif_corrected>1. || delta_h_factor<0. || delta_h_factor>1. ) |
308 | qDebug() << "invalid values in Sapling::growSapling"; |
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309 | |||
1165 | werner | 310 | // sprouts grow faster. Sprouts therefore are less prone to stress (threshold), and can grow higher than the growth potential. |
311 | if (tree.is_sprout()) |
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312 | delta_h_factor = delta_h_factor *species->saplingGrowthParameters().sproutGrowth; |
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313 | |||
1113 | werner | 314 | // check browsing |
315 | if (mBrowsingPressure>0. && tree.height<=2.f) { |
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316 | double p = rus->species()->saplingGrowthParameters().browsingProbability; |
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317 | // calculate modifed annual browsing probability via odds-ratios |
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318 | // odds = p/(1-p) -> odds_mod = odds * browsingPressure -> p_mod = odds_mod /( 1 + odds_mod) === p*pressure/(1-p+p*pressure) |
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319 | double p_browse = p*mBrowsingPressure / (1. - p + p*mBrowsingPressure); |
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320 | if (drandom() < p_browse) { |
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321 | delta_h_factor = 0.; |
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322 | } |
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323 | } |
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324 | |||
325 | // check mortality of saplings |
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326 | if (delta_h_factor < species->saplingGrowthParameters().stressThreshold) { |
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327 | tree.stress_years++; |
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328 | if (tree.stress_years > species->saplingGrowthParameters().maxStressYears) { |
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329 | // sapling dies... |
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1160 | werner | 330 | rus->saplingStat().addCarbonOfDeadSapling( tree.height / species->saplingGrowthParameters().hdSapling * 100.f ); |
1113 | werner | 331 | tree.clear(); |
1115 | werner | 332 | return true; // need cleanup |
1113 | werner | 333 | } |
334 | } else { |
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335 | tree.stress_years=0; // reset stress counter |
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336 | } |
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1165 | werner | 337 | DBG_IF(delta_h_pot*delta_h_factor < 0.f || (!tree.is_sprout() && delta_h_pot*delta_h_factor > 2.), "Sapling::growSapling", "inplausible height growth."); |
1113 | werner | 338 | |
339 | // grow |
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340 | tree.height += delta_h_pot * delta_h_factor; |
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341 | tree.age++; // increase age of sapling by 1 |
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342 | |||
343 | // recruitment? |
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344 | if (tree.height > 4.f) { |
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345 | rus->saplingStat().mRecruited++; |
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346 | |||
347 | float dbh = tree.height / species->saplingGrowthParameters().hdSapling * 100.f; |
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348 | // the number of trees to create (result is in trees per pixel) |
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349 | double n_trees = species->saplingGrowthParameters().representedStemNumber(dbh); |
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350 | int to_establish = static_cast<int>( n_trees ); |
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351 | |||
352 | // if n_trees is not an integer, choose randomly if we should add a tree. |
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353 | // e.g.: n_trees = 2.3 -> add 2 trees with 70% probability, and add 3 trees with p=30%. |
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354 | if (drandom() < (n_trees-to_establish) || to_establish==0) |
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355 | to_establish++; |
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356 | |||
357 | // add a new tree |
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358 | for (int i=0;i<to_establish;i++) { |
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359 | Tree &bigtree = const_cast<ResourceUnit*>(ru)->newTree(); |
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360 | |||
1159 | werner | 361 | bigtree.setPosition(GlobalSettings::instance()->model()->grid()->indexOf(isc)); |
1113 | werner | 362 | // add variation: add +/-10% to dbh and *independently* to height. |
1158 | werner | 363 | bigtree.setDbh(static_cast<float>(dbh * nrandom(1. - mRecruitmentVariation, 1. + mRecruitmentVariation))); |
364 | bigtree.setHeight(static_cast<float>(tree.height * nrandom(1. - mRecruitmentVariation, 1. + mRecruitmentVariation))); |
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1113 | werner | 365 | bigtree.setSpecies( const_cast<Species*>(species) ); |
366 | bigtree.setAge(tree.age,tree.height); |
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367 | bigtree.setRU(const_cast<ResourceUnit*>(ru)); |
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368 | bigtree.setup(); |
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369 | const Tree *t = &bigtree; |
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370 | const_cast<ResourceUnitSpecies*>(rus)->statistics().add(t, 0); // count the newly created trees already in the stats |
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371 | } |
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372 | // clear all regeneration from this pixel (including this tree) |
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373 | tree.clear(); // clear this tree (no carbon flow to the ground) |
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374 | for (int i=0;i<NSAPCELLS;++i) { |
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1159 | werner | 375 | if (scell.saplings[i].is_occupied()) { |
1113 | werner | 376 | // add carbon to the ground |
1159 | werner | 377 | rus->saplingStat().addCarbonOfDeadSapling( scell.saplings[i].height / species->saplingGrowthParameters().hdSapling * 100.f ); |
378 | scell.saplings[i].clear(); |
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1113 | werner | 379 | } |
380 | } |
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1115 | werner | 381 | return true; // need cleanup |
1113 | werner | 382 | } |
383 | // book keeping (only for survivors) for the sapling of the resource unit / species |
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384 | SaplingStat &ss = rus->saplingStat(); |
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385 | ss.mLiving++; |
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386 | ss.mAvgHeight+=tree.height; |
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387 | ss.mAvgAge+=tree.age; |
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388 | ss.mAvgDeltaHPot+=delta_h_pot; |
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389 | ss.mAvgHRealized += delta_h_pot * delta_h_factor; |
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1115 | werner | 390 | return false; |
1113 | werner | 391 | } |
392 | |||
393 | void SaplingStat::clearStatistics() |
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394 | { |
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395 | mRecruited=mDied=mLiving=0; |
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396 | mSumDbhDied=0.; |
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397 | mAvgHeight=0.; |
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398 | mAvgAge=0.; |
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399 | mAvgDeltaHPot=mAvgHRealized=0.; |
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1158 | werner | 400 | mAdded=0; |
1113 | werner | 401 | |
402 | } |
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1158 | werner | 403 | |
404 | void SaplingStat::calculate(const Species *species, ResourceUnit *ru) |
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405 | { |
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406 | if (mLiving) { |
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407 | mAvgHeight /= double(mLiving); |
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408 | mAvgAge /= double(mLiving); |
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409 | mAvgDeltaHPot /= double(mLiving); |
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410 | mAvgHRealized /= double(mLiving); |
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411 | } |
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412 | |||
413 | // calculate carbon balance |
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414 | CNPair old_state = mCarbonLiving; |
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415 | mCarbonLiving.clear(); |
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416 | |||
417 | CNPair dead_wood, dead_fine; // pools for mortality |
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418 | // average dbh |
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419 | if (mLiving>0) { |
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420 | // calculate the avg dbh and number of stems |
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421 | double avg_dbh = mAvgHeight / species->saplingGrowthParameters().hdSapling * 100.; |
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422 | double n = mLiving * species->saplingGrowthParameters().representedStemNumber( avg_dbh ); |
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423 | // woody parts: stem, branchse and coarse roots |
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424 | double woody_bm = species->biomassWoody(avg_dbh) + species->biomassBranch(avg_dbh) + species->biomassRoot(avg_dbh); |
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425 | double foliage = species->biomassFoliage(avg_dbh); |
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426 | double fineroot = foliage*species->finerootFoliageRatio(); |
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427 | |||
428 | mCarbonLiving.addBiomass( woody_bm*n, species->cnWood() ); |
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429 | mCarbonLiving.addBiomass( foliage*n, species->cnFoliage() ); |
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430 | mCarbonLiving.addBiomass( fineroot*n, species->cnFineroot() ); |
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431 | |||
1160 | werner | 432 | DBGMODE( |
433 | if (isnan(mCarbonLiving.C)) |
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434 | qDebug("carbon NaN in SaplingStat::calculate (living trees)."); |
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435 | ); |
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436 | |||
1158 | werner | 437 | // turnover |
438 | if (ru->snag()) |
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439 | ru->snag()->addTurnoverLitter(species, foliage*species->turnoverLeaf(), fineroot*species->turnoverRoot()); |
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440 | |||
441 | // calculate the "mortality from competition", i.e. carbon that stems from reduction of stem numbers |
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442 | // from Reinekes formula. |
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443 | // |
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444 | if (avg_dbh>1.) { |
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445 | double avg_dbh_before = (mAvgHeight - mAvgHRealized) / species->saplingGrowthParameters().hdSapling * 100.; |
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446 | double n_before = mLiving * species->saplingGrowthParameters().representedStemNumber( qMax(1.,avg_dbh_before) ); |
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447 | if (n<n_before) { |
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448 | dead_wood.addBiomass( woody_bm * (n_before-n), species->cnWood() ); |
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449 | dead_fine.addBiomass( foliage * (n_before-n), species->cnFoliage() ); |
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450 | dead_fine.addBiomass( fineroot * (n_before-n), species->cnFineroot() ); |
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1160 | werner | 451 | DBGMODE( |
452 | if (isnan(dead_fine.C)) |
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453 | qDebug("carbon NaN in SaplingStat::calculate (self thinning)."); |
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454 | ); |
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455 | |||
1158 | werner | 456 | } |
457 | } |
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458 | |||
459 | } |
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460 | if (mDied) { |
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461 | double avg_dbh_dead = mSumDbhDied / double(mDied); |
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462 | double n = mDied * species->saplingGrowthParameters().representedStemNumber( avg_dbh_dead ); |
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463 | // woody parts: stem, branchse and coarse roots |
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464 | |||
465 | dead_wood.addBiomass( ( species->biomassWoody(avg_dbh_dead) + species->biomassBranch(avg_dbh_dead) + species->biomassRoot(avg_dbh_dead)) * n, species->cnWood() ); |
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466 | double foliage = species->biomassFoliage(avg_dbh_dead)*n; |
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467 | |||
468 | dead_fine.addBiomass( foliage, species->cnFoliage() ); |
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469 | dead_fine.addBiomass( foliage*species->finerootFoliageRatio(), species->cnFineroot() ); |
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1160 | werner | 470 | DBGMODE( |
471 | if (isnan(dead_fine.C)) |
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472 | qDebug("carbon NaN in SaplingStat::calculate (died trees)."); |
||
473 | ); |
||
474 | |||
1158 | werner | 475 | } |
476 | if (!dead_wood.isEmpty() || !dead_fine.isEmpty()) |
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477 | if (ru->snag()) |
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478 | ru->snag()->addToSoil(species, dead_wood, dead_fine); |
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479 | |||
480 | // calculate net growth: |
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481 | // delta of stocks |
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482 | mCarbonGain = mCarbonLiving + dead_fine + dead_wood - old_state; |
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483 | if (mCarbonGain.C < 0) |
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484 | mCarbonGain.clear(); |
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485 | |||
486 | |||
487 | GlobalSettings::instance()->systemStatistics()->saplingCount+=mLiving; |
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488 | GlobalSettings::instance()->systemStatistics()->newSaplings+=mAdded; |
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489 | |||
490 | } |
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1162 | werner | 491 | |
492 | double SaplingStat::livingStemNumber(const Species *species, double &rAvgDbh, double &rAvgHeight, double &rAvgAge) const |
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493 | { |
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494 | rAvgHeight = averageHeight(); |
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495 | rAvgDbh = rAvgHeight / species->saplingGrowthParameters().hdSapling * 100.f; |
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496 | rAvgAge = averageAge(); |
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497 | double n= species->saplingGrowthParameters().representedStemNumber(rAvgDbh); |
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498 | return n; |
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499 | // *** old code (sapling.cpp) *** |
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500 | // double total = 0.; |
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501 | // double dbh_sum = 0.; |
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502 | // double h_sum = 0.; |
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503 | // double age_sum = 0.; |
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504 | // const SaplingGrowthParameters &p = mRUS->species()->saplingGrowthParameters(); |
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505 | // for (QVector<SaplingTreeOld>::const_iterator it = mSaplingTrees.constBegin(); it!=mSaplingTrees.constEnd(); ++it) { |
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506 | // float dbh = it->height / p.hdSapling * 100.f; |
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507 | // if (dbh<1.) // minimum size: 1cm |
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508 | // continue; |
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509 | // double n = p.representedStemNumber(dbh); // one cohort on the pixel represents that number of trees |
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510 | // dbh_sum += n*dbh; |
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511 | // h_sum += n*it->height; |
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512 | // age_sum += n*it->age.age; |
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513 | // total += n; |
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514 | // } |
||
515 | // if (total>0.) { |
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516 | // dbh_sum /= total; |
||
517 | // h_sum /= total; |
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518 | // age_sum /= total; |
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519 | // } |
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520 | // rAvgDbh = dbh_sum; |
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521 | // rAvgHeight = h_sum; |
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522 | // rAvgAge = age_sum; |
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523 | // return total; |
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524 | } |