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1 | |||
189 | iland | 2 | /** @class ResourceUnit |
3 | ResourceUnit is the spatial unit that encapsulates a forest stand and links to several environmental components |
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92 | Werner | 4 | (Climate, Soil, Water, ...). |
5 | |||
6 | */ |
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7 | #include <QtCore> |
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8 | #include "global.h" |
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9 | |||
189 | iland | 10 | #include "resourceunit.h" |
229 | werner | 11 | #include "resourceunitspecies.h" |
111 | Werner | 12 | #include "speciesset.h" |
13 | #include "species.h" |
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113 | Werner | 14 | #include "production3pg.h" |
200 | werner | 15 | #include "model.h" |
208 | werner | 16 | #include "climate.h" |
241 | werner | 17 | #include "watercycle.h" |
18 | #include "helper.h" |
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92 | Werner | 19 | |
241 | werner | 20 | ResourceUnit::~ResourceUnit() |
21 | { |
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22 | if (mWater) |
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23 | delete mWater; |
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24 | } |
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111 | Werner | 25 | |
189 | iland | 26 | ResourceUnit::ResourceUnit(const int index) |
92 | Werner | 27 | { |
94 | Werner | 28 | mSpeciesSet = 0; |
208 | werner | 29 | mClimate = 0; |
113 | Werner | 30 | mIndex = index; |
241 | werner | 31 | mWater = new WaterCycle(); |
32 | |||
157 | werner | 33 | mTrees.reserve(100); // start with space for 100 trees. |
92 | Werner | 34 | } |
105 | Werner | 35 | |
241 | werner | 36 | void ResourceUnit::setup() |
37 | { |
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38 | mWater->setup(this); |
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39 | } |
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40 | |||
111 | Werner | 41 | /// set species and setup the species-per-RU-data |
189 | iland | 42 | void ResourceUnit::setSpeciesSet(SpeciesSet *set) |
111 | Werner | 43 | { |
44 | mSpeciesSet = set; |
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45 | mRUSpecies.clear(); |
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229 | werner | 46 | mRUSpecies.resize(set->count()); // ensure that the vector space is not relocated |
111 | Werner | 47 | for (int i=0;i<set->count();i++) { |
48 | Species *s = const_cast<Species*>(mSpeciesSet->species(i)); |
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49 | if (!s) |
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189 | iland | 50 | throw IException("ResourceUnit::setSpeciesSet: invalid index!"); |
229 | werner | 51 | |
52 | /* be careful: setup() is called with a pointer somewhere to the content of the mRUSpecies container. |
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53 | If the container memory is relocated (QVector), the pointer gets invalid!!! |
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54 | Therefore, a resize() is called before the loop (no resize()-operations during the loop)! */ |
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55 | mRUSpecies[i].setup(s,this); // setup this element |
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111 | Werner | 56 | } |
57 | } |
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58 | |||
200 | werner | 59 | ResourceUnitSpecies &ResourceUnit::resourceUnitSpecies(const Species *species) |
111 | Werner | 60 | { |
61 | return mRUSpecies[species->index()]; |
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62 | } |
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63 | |||
189 | iland | 64 | Tree &ResourceUnit::newTree() |
105 | Werner | 65 | { |
66 | // start simple: just append to the vector... |
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67 | mTrees.append(Tree()); |
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68 | return mTrees.back(); |
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69 | } |
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107 | Werner | 70 | |
157 | werner | 71 | /// remove dead trees from tree list |
72 | /// reduce size of vector if lots of space is free |
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73 | /// tests showed that this way of cleanup is very fast, |
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74 | /// because no memory allocations are performed (simple memmove()) |
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75 | /// when trees are moved. |
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189 | iland | 76 | void ResourceUnit::cleanTreeList() |
157 | werner | 77 | { |
78 | QVector<Tree>::iterator last=mTrees.end()-1; |
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79 | QVector<Tree>::iterator current = mTrees.begin(); |
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158 | werner | 80 | while (last>=current && (*last).isDead()) |
157 | werner | 81 | --last; |
107 | Werner | 82 | |
157 | werner | 83 | while (current<last) { |
158 | werner | 84 | if ((*current).isDead()) { |
157 | werner | 85 | *current = *last; // copy data! |
86 | --last; // |
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158 | werner | 87 | while (last>=current && (*last).isDead()) |
157 | werner | 88 | --last; |
89 | } |
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90 | ++current; |
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91 | } |
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92 | ++last; // last points now to the first dead tree |
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93 | |||
94 | // free ressources |
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95 | mTrees.erase(last, mTrees.end()); |
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96 | if (mTrees.capacity()>100) { |
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97 | if (mTrees.count() / double(mTrees.capacity()) < 0.2) { |
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98 | int target_size = mTrees.count()*2; |
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99 | qDebug() << "reduce size from "<<mTrees.capacity() << "to" << target_size; |
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100 | mTrees.reserve(qMax(target_size, 100)); |
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101 | } |
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102 | } |
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103 | } |
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104 | |||
189 | iland | 105 | void ResourceUnit::newYear() |
107 | Werner | 106 | { |
251 | werner | 107 | mAggregatedWLA = 0.; |
108 | mAggregatedLA = 0.; |
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109 | mAggregatedLR = 0.; |
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110 | mEffectiveArea = 0.; |
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151 | iland | 111 | mPixelCount = mStockedPixelCount = 0; |
111 | Werner | 112 | // clear statistics global and per species... |
107 | Werner | 113 | } |
110 | Werner | 114 | |
240 | werner | 115 | |
116 | |||
112 | Werner | 117 | /** production() is the "stand-level" part of the biomass production (3PG). |
118 | - The amount of radiation intercepted by the stand is calculated |
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119 | - The 3PG production for each species and ressource unit is invoked */ |
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189 | iland | 120 | void ResourceUnit::production() |
110 | Werner | 121 | { |
241 | werner | 122 | |
151 | iland | 123 | if (mAggregatedWLA==0 || mPixelCount==0) { |
112 | Werner | 124 | // nothing to do... |
241 | werner | 125 | mStatistics.clear(); |
112 | Werner | 126 | return; |
127 | } |
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151 | iland | 128 | |
129 | // the pixel counters are filled during the height-grid-calculations |
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230 | werner | 130 | mStockedArea = 100. * mStockedPixelCount; // m2 (1 height grid pixel = 10x10m) |
131 | |||
112 | Werner | 132 | // calculate the leaf area index (LAI) |
151 | iland | 133 | double LAI = mAggregatedLA / mStockedArea; |
112 | Werner | 134 | // calculate the intercepted radiation fraction using the law of Beer Lambert |
200 | werner | 135 | const double k = Model::settings().lightExtinctionCoefficient; |
112 | Werner | 136 | double interception_fraction = 1. - exp(-k * LAI); |
251 | werner | 137 | mEffectiveArea = mStockedArea * interception_fraction; // m2 |
112 | Werner | 138 | |
230 | werner | 139 | // calculate the total weighted leaf area on this RU: |
251 | werner | 140 | mLRI_modification = interception_fraction * mStockedArea / mAggregatedWLA; |
205 | werner | 141 | |
251 | werner | 142 | |
143 | DBGMODE(qDebug() << QString("production: LAI: %1 (intercepted fraction: %2, stocked area: %4). LRI-Multiplier: %3") |
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230 | werner | 144 | .arg(LAI) |
145 | .arg(interception_fraction) |
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251 | werner | 146 | .arg(mLRI_modification) |
230 | werner | 147 | .arg(mStockedArea); |
148 | ); |
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241 | werner | 149 | // soil water model - this determines soil water contents needed for response calculations |
150 | { |
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151 | DebugTimer tw("water:run"); |
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152 | mWater->run(); |
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153 | } |
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112 | Werner | 154 | |
155 | // invoke species specific calculation (3PG) |
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229 | werner | 156 | //QVector<ResourceUnitSpecies>::iterator i; |
157 | ResourceUnitSpecies *i; |
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189 | iland | 158 | QVector<ResourceUnitSpecies>::iterator iend = mRUSpecies.end(); |
241 | werner | 159 | mStatistics.clear(); |
112 | Werner | 160 | for (i=mRUSpecies.begin(); i!=iend; ++i) { |
229 | werner | 161 | i->calculate(); |
162 | i->statistics().clear(); |
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231 | werner | 163 | qDebug() << "species" << (*i).species()->id() << "raw_gpp_m2" << i->prod3PG().GPPperArea(); |
112 | Werner | 164 | } |
110 | Werner | 165 | } |
166 | |||
251 | werner | 167 | void ResourceUnit::calculateInterceptedArea() |
168 | { |
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169 | Q_ASSERT(mAggregatedLR>0.); |
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170 | mEffectiveArea_perWLA = mEffectiveArea / mAggregatedLR; |
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171 | qDebug() << "RU: aggregated lightresponse:" << mAggregatedLR << "eff.area./wla:" << mEffectiveArea_perWLA; |
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172 | } |
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173 | |||
189 | iland | 174 | void ResourceUnit::yearEnd() |
180 | werner | 175 | { |
176 | // calculate statistics for all tree species of the ressource unit |
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177 | int c = mRUSpecies.count(); |
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178 | for (int i=0;i<c; i++) { |
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179 | mRUSpecies[i].statistics().calculate(); |
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180 | mStatistics.add(mRUSpecies[i].statistics()); |
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181 | } |
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182 | mStatistics.calculate(); // aggreagte on stand level |
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183 | } |
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184 | |||
241 | werner | 185 | /// refresh of tree based statistics. |
240 | werner | 186 | void ResourceUnit::createStandStatistics() |
187 | { |
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241 | werner | 188 | // clear statistics (ru-level and ru-species level) |
240 | werner | 189 | mStatistics.clear(); |
190 | for (int i=0;i<mRUSpecies.count();i++) |
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191 | mRUSpecies[i].statistics().clear(); |
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241 | werner | 192 | |
193 | // add all trees to the statistics objects of the species |
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240 | werner | 194 | foreach(const Tree &t, mTrees) { |
195 | if (!t.isDead()) |
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257 | werner | 196 | resourceUnitSpecies(t.species()).statistics().add(&t, 0); |
240 | werner | 197 | } |
241 | werner | 198 | // summarize statistics for the whole resource unit |
240 | werner | 199 | for (int i=0;i<mRUSpecies.count();i++) { |
200 | mRUSpecies[i].statistics().calculate(); |
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201 | mStatistics.add(mRUSpecies[i].statistics()); |
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202 | } |
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203 | } |