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1111 | werner | 2 | #ifndef SAPLINGS_H |
3 | #define SAPLINGS_H |
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4 | |||
5 | #include "grid.h" |
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1113 | werner | 6 | #include "snag.h" |
1162 | werner | 7 | #include <QRectF> |
1111 | werner | 8 | |
1113 | werner | 9 | |
1111 | werner | 10 | struct SaplingTree { |
1113 | werner | 11 | SaplingTree() { clear(); } |
1111 | werner | 12 | short unsigned int age; // number of consectuive years the sapling suffers from dire conditions |
1118 | werner | 13 | short signed int species_index; // index of the species within the resource-unit-species container |
1111 | werner | 14 | unsigned char stress_years; // (upper 16bits) + age of sapling (lower 16 bits) |
1165 | werner | 15 | unsigned char flags; // flags, e.g. whether sapling stems from sprouting |
1111 | werner | 16 | float height; // height of the sapling in meter |
17 | bool is_occupied() const { return height>0.f; } |
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1118 | werner | 18 | void clear() { age=0; species_index=-1; stress_years=0; flags=0; height=0.f; } |
1158 | werner | 19 | void setSapling(const float h_m, const int age_yrs, const int species_idx) { height=h_m; age=static_cast<short unsigned int>(age_yrs); stress_years=0; species_index=static_cast<short signed int>(species_idx); } |
1165 | werner | 20 | // flags |
21 | bool is_sprout() const { return flags & 1; } |
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22 | void set_sprout(const bool sprout) {if (sprout) flags |= 1; else flags &= (1 ^ 0xffffff ); } |
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1111 | werner | 23 | }; |
24 | #define NSAPCELLS 5 |
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25 | struct SaplingCell { |
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26 | enum ECellState { CellInvalid=0, CellFree=1, CellFull=2}; |
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27 | SaplingCell() { |
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28 | state=CellInvalid; |
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29 | } |
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30 | ECellState state; |
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31 | SaplingTree saplings[NSAPCELLS]; |
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32 | void checkState() { if (state==CellInvalid) return; |
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1112 | werner | 33 | bool free = false; |
1111 | werner | 34 | for (int i=0;i<NSAPCELLS;++i) { |
35 | // locked for all species, if a sapling of one species >1.3m |
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1112 | werner | 36 | if (saplings[i].height>1.3f) {state = CellFull; return; } |
1111 | werner | 37 | // locked, if all slots are occupied. |
38 | if (!saplings[i].is_occupied()) |
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39 | free=true; |
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40 | } |
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41 | state = free? CellFree : CellFull; |
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42 | } |
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1117 | werner | 43 | /// get an index to an open slot in the cell, or -1 if all slots are occupied |
44 | int free_index() { |
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45 | for (int i=0;i<NSAPCELLS;++i) |
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46 | if (!saplings[i].is_occupied()) |
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47 | return i; |
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48 | return -1; |
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49 | } |
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50 | /// add a sapling to this cell, return a pointer to the tree on success, or 0 otherwise |
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51 | SaplingTree *addSapling(const float h_m, const int age_yrs, const int species_idx) { |
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52 | int idx = free_index(); |
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53 | if (idx==-1) |
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54 | return 0; |
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55 | saplings[idx].setSapling(h_m, age_yrs, species_idx); |
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56 | return &saplings[idx]; |
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57 | } |
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58 | /// return the maximum height on the pixel |
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59 | float max_height() { if (state==CellInvalid) return 0.f; |
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60 | float h_max = 0.f; |
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61 | for (int i=0;i<NSAPCELLS;++i) |
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62 | h_max = std::max(saplings[i].height, h_max); |
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63 | return h_max; |
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64 | } |
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65 | /// return the sapling tree of the requested species, or 0 |
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66 | SaplingTree *sapling(int species_index) { |
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67 | if (state==CellInvalid) return 0; |
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68 | for (int i=0;i<NSAPCELLS;++i) |
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69 | if (saplings[i].species_index == species_index) |
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70 | return &saplings[i]; |
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71 | return 0; |
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72 | } |
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1111 | werner | 73 | }; |
74 | class ResourceUnit; |
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1113 | werner | 75 | class Saplings; |
1111 | werner | 76 | |
1117 | werner | 77 | /** The SaplingStat class stores statistics on the resource unit x species level. |
78 | */ |
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1113 | werner | 79 | class SaplingStat |
80 | { |
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81 | public: |
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1115 | werner | 82 | SaplingStat() { clearStatistics(); } |
1113 | werner | 83 | void clearStatistics(); |
1158 | werner | 84 | void calculate(const Species *species, ResourceUnit *ru); |
1113 | werner | 85 | // actions |
1160 | werner | 86 | void addCarbonOfDeadSapling(float dbh) { mDied++; mSumDbhDied+=dbh; } |
1111 | werner | 87 | |
1113 | werner | 88 | // access to statistics |
89 | int newSaplings() const { return mAdded; } |
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90 | int diedSaplings() const { return mDied; } |
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91 | int livingSaplings() const { return mLiving; } ///< get the number |
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92 | int recruitedSaplings() const { return mRecruited; } |
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93 | /// returns the *represented* (Reineke's Law) number of trees (N/ha) and the mean dbh/height (cm/m) |
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1162 | werner | 94 | double livingStemNumber(const Species *species, double &rAvgDbh, double &rAvgHeight, double &rAvgAge) const; |
1113 | werner | 95 | |
96 | double averageHeight() const { return mAvgHeight; } |
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97 | double averageAge() const { return mAvgAge; } |
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98 | double averageDeltaHPot() const { return mAvgDeltaHPot; } |
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99 | double averageDeltaHRealized() const { return mAvgHRealized; } |
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100 | // carbon and nitrogen |
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101 | const CNPair &carbonLiving() const { return mCarbonLiving; } ///< state of the living |
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102 | const CNPair &carbonGain() const { return mCarbonGain; } ///< state of the living |
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103 | |||
104 | private: |
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105 | int mAdded; ///< number of trees added |
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106 | int mRecruited; ///< number recruited (i.e. grown out of regeneration layer) |
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107 | int mDied; ///< number of trees died |
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108 | double mSumDbhDied; ///< running sum of dbh of died trees (used to calculate detritus) |
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109 | int mLiving; ///< number of trees (cohorts!!!) currently in the regeneration layer |
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110 | double mAvgHeight; ///< average height of saplings (m) |
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111 | double mAvgAge; ///< average age of saplings (years) |
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112 | double mAvgDeltaHPot; ///< average height increment potential (m) |
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113 | double mAvgHRealized; ///< average realized height increment |
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114 | CNPair mCarbonLiving; |
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115 | CNPair mCarbonGain; ///< net growth (kg / ru) of saplings |
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116 | |||
117 | friend class Saplings; |
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118 | |||
119 | }; |
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1117 | werner | 120 | /** The Saplings class the container for the establishment and sapling growth in iLand. |
121 | * |
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122 | */ |
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1111 | werner | 123 | class Saplings |
124 | { |
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125 | public: |
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126 | Saplings(); |
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127 | void setup(); |
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128 | // main functions |
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129 | void establishment(const ResourceUnit *ru); |
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1113 | werner | 130 | void saplingGrowth(const ResourceUnit *ru); |
131 | |||
1117 | werner | 132 | // access |
1162 | werner | 133 | /// return the SaplingCell (i.e. container for the ind. saplings) for the given 2x2m coordinates |
134 | /// if 'only_valid' is true, then 0 is returned if no living saplings are on the cell |
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135 | /// 'rRUPtr' is a pointer to a RU-ptr: if provided, a pointer to the resource unit is stored |
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136 | SaplingCell *cell(QPoint lif_coords, bool only_valid=true, ResourceUnit **rRUPtr=0); |
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137 | /// clear/kill all saplings within the rectangle given by 'rectangle'. |
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1165 | werner | 138 | /// If 'remove_biomass' is true, then the biomass is extracted (e.g. burnt), otherwise they are moved to soil |
1162 | werner | 139 | void clearSaplings(const QRectF &rectangle, const bool remove_biomass); |
1165 | werner | 140 | /// clear all saplings on a given cell 's' (if 'remove_biomass' is true: biomass removed from system (e.g. burnt)) |
141 | void clearSaplings(SaplingCell *s, ResourceUnit *ru, const bool remove_biomass); |
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1111 | werner | 142 | |
1165 | werner | 143 | /// generate vegetative offspring from 't' (sprouts) |
144 | int addSprout(const Tree *t); |
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145 | |||
1113 | werner | 146 | static void setRecruitmentVariation(const double variation) { mRecruitmentVariation = variation; } |
147 | static void updateBrowsingPressure(); |
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148 | |||
1111 | werner | 149 | private: |
1159 | werner | 150 | bool growSapling(const ResourceUnit *ru, SaplingCell &scell, SaplingTree &tree, int isc, float dom_height, float lif_value); |
151 | //Grid<SaplingCell> mGrid; |
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1113 | werner | 152 | static double mRecruitmentVariation; |
153 | static double mBrowsingPressure; |
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1111 | werner | 154 | }; |
155 | |||
156 | #endif // SAPLINGS_H |