public override int GrowHeightBigSix(OrganonConfiguration configuration, OrganonStand stand, Trees trees, float[] crownCompetitionByHeight)
{
float P1;
float P2;
float P3;
float P4;
float P5;
float P6;
float P7;
float P8;
switch (trees.Species)
{
// Ritchie and Hann(1990) FRL Research Paper 54
case FiaCode.AbiesGrandis:
P1 = 1.0F;
P2 = -0.0328142F;
P3 = -0.0127851F;
P4 = 1.0F;
P5 = 6.19784F;
P6 = 2.0F;
P7 = 0.0F;
P8 = 1.01F;
break;
case FiaCode.PseudotsugaMenziesii:
P1 = 0.655258886F;
P2 = -0.006322913F;
P3 = -0.039409636F;
P4 = 0.5F;
P5 = 0.597617316F;
P6 = 2.0F;
P7 = 0.631643636F;
P8 = 1.010018427F;
break;
case FiaCode.TsugaHeterophylla:
P1 = 1.0F;
P2 = -0.0384415F;
P3 = -0.0144139F;
P4 = 0.5F;
P5 = 1.04409F;
P6 = 2.0F;
P7 = 0.0F;
P8 = 1.03F;
break;
default:
throw Trees.CreateUnhandledSpeciesException(trees.Species);
}
int oldTreeRecordCount = 0;
for (int treeIndex = 0; treeIndex < trees.Count; ++treeIndex)
{
if (trees.LiveExpansionFactor[treeIndex] <= 0.0F)
{
trees.HeightGrowth[treeIndex] = 0.0F;
continue;
}
float growthEffectiveAge = configuration.Variant.GetGrowthEffectiveAge(configuration, stand, trees, treeIndex, out float potentialHeightGrowth);
float crownCompetitionIncrement = OrganonVariant.GetCrownCompetitionFactorByHeight(trees.Height[treeIndex], crownCompetitionByHeight);
float crownRatio = trees.CrownRatio[treeIndex];
float FCR = -P5 *MathV.Pow(1.0F - crownRatio, P6) * MathV.Exp(P7 * MathF.Sqrt(crownCompetitionIncrement));
float B0 = P1 * MathV.Exp(P2 * crownCompetitionIncrement);
float B1 = MathV.Exp(P3 * MathV.Pow(crownCompetitionIncrement, P4));
float MODIFER = P8 * (B0 + (B1 - B0) * MathF.Exp(FCR)); // changed from MathV due to FCR of -91 being observed
float CRADJ = OrganonGrowth.GetCrownRatioAdjustment(crownRatio);
float heightGrowth = potentialHeightGrowth * MODIFER * CRADJ;
Debug.Assert(heightGrowth > 0.0F);
trees.HeightGrowth[treeIndex] = heightGrowth;
if (growthEffectiveAge > configuration.Variant.OldTreeAgeThreshold)
{
++oldTreeRecordCount;
}
}
return(oldTreeRecordCount);
}
public override void ReduceExpansionFactors(OrganonStand stand, OrganonStandDensity densityBeforeGrowth, Trees trees, float fertilizationExponent)
{
// SMC MORTALITY
float B0;
float B1;
float B2;
float B3;
float B4;
float B5;
float siteIndex = stand.SiteIndex;
switch (trees.Species)
{
// Hann, Marshall, and Hanus(2006) FRL Research Contribution 49
case FiaCode.PseudotsugaMenziesii:
B0 = -3.12161659F;
B1 = -0.44724396F;
B2 = 0.0F;
B3 = -2.48387172F;
B4 = 0.01843137F;
B5 = 0.01353918F;
break;
// Unpublished Equation on File at OSU Dept.Forest Resources
case FiaCode.AbiesGrandis:
B0 = -7.60159F;
B1 = -0.200523F;
B2 = 0.0F;
B3 = 0.0F;
B4 = 0.0441333F;
B5 = 0.00063849F;
break;
// Hann, Marshall, Hanus(2003) FRL Research Contribution 40
case FiaCode.TsugaHeterophylla:
case FiaCode.ThujaPlicata:
B0 = -0.761609F;
B1 = -0.529366F;
B2 = 0.0F;
B3 = -4.74019F;
B4 = 0.0119587F;
B5 = 0.00756365F;
siteIndex = stand.HemlockSiteIndex; // BUGBUG: why does redcedar get hemlock site index only here?
break;
// Hann and Hanus(2001) FRL Research Contribution 34
case FiaCode.TaxusBrevifolia:
B0 = -4.072781265F;
B1 = -0.176433475F;
B2 = 0.0F;
B3 = -1.729453975F;
B4 = 0.0F;
B5 = 0.012525642F;
break;
// Hann and Hanus(2001) FRL Research Contribution 34
case FiaCode.ArbutusMenziesii:
B0 = -6.089598985F;
B1 = -0.245615070F;
B2 = 0.0F;
B3 = -3.208265570F;
B4 = 0.033348079F;
B5 = 0.013571319F;
break;
// Hann and Hanus(2001) FRL Research Contribution 34
case FiaCode.AcerMacrophyllum:
B0 = -2.976822456F;
B1 = 0.0F;
B2 = 0.0F;
B3 = -6.223250962F;
B4 = 0.0F;
B5 = 0.0F;
break;
// Gould, Marshall, and Harrington(2008) West.J.Appl.For. 23: 26-33
case FiaCode.QuercusGarryana:
B0 = -6.00031085F;
B1 = -0.10490823F;
B2 = 0.0F;
B3 = -0.99541909F;
B4 = 0.00912739F;
B5 = 0.87115652F;
break;
// best guess
case FiaCode.AlnusRubra:
B0 = -2.0F;
B1 = -0.5F;
B2 = 0.015F;
B3 = -3.0F;
B4 = 0.015F;
B5 = 0.01F;
break;
// Hann and Hanus(2001) FRL Research Contribution 34
case FiaCode.CornusNuttallii:
B0 = -3.020345211F;
B1 = 0.0F;
B2 = 0.0F;
B3 = -8.467882343F;
B4 = 0.013966388F;
B5 = 0.009461545F;
break;
// buest guess
case FiaCode.Salix:
B0 = -1.386294361F;
B1 = 0.0F;
B2 = 0.0F;
B3 = 0.0F;
B4 = 0.0F;
B5 = 0.0F;
break;
default:
throw Trees.CreateUnhandledSpeciesException(trees.Species);
}
float[]? mortalityKforRedAlder = null;
if (trees.Species == FiaCode.AlnusRubra)
{
mortalityKforRedAlder = new float[trees.Capacity];
}
for (int treeIndex = 0; treeIndex < trees.Count; ++treeIndex)
{
if (trees.LiveExpansionFactor[treeIndex] <= 0.0F)
{
continue;
}
float dbhInInches = trees.Dbh[treeIndex];
float basalAreaLarger = densityBeforeGrowth.GetBasalAreaLarger(dbhInInches);
if (trees.Species == FiaCode.AbiesGrandis)
{
basalAreaLarger /= dbhInInches;
}
else if (trees.Species == FiaCode.QuercusGarryana)
{
basalAreaLarger = MathV.Ln(basalAreaLarger + 5.0F);
}
float crownRatio = trees.CrownRatio[treeIndex];
float PMK = B0 + B1 * dbhInInches + B2 * dbhInInches * dbhInInches + B3 * crownRatio + B4 * siteIndex + B5 * basalAreaLarger + fertilizationExponent;
if (trees.Species == FiaCode.AlnusRubra)
{
mortalityKforRedAlder ![treeIndex] = PMK;
public override void ReduceExpansionFactors(OrganonStand stand, OrganonStandDensity densityBeforeGrowth, Trees trees, float fertilizationExponent)
{
// RAP MORTALITY
float B0;
float B1;
float B2;
float B3;
float B4;
float B5;
float POW = 0.2F;
switch (trees.Species)
{
// RA Coefficients from Hann, Bluhm, and Hibbs New Red Alder Equation
case FiaCode.AlnusRubra:
B0 = -4.333150734F;
B1 = -0.9856713799F;
B2 = 0.0F;
B3 = -2.583317081F;
B4 = 0.0369852164F;
B5 = 0.0394546978F;
POW = 1.0F;
break;
// Hann, Marshall, and Hanus(2006) FRL Research Contribution 49
case FiaCode.PseudotsugaMenziesii:
B0 = -3.12161659F;
B1 = -0.44724396F;
B2 = 0.0F;
B3 = -2.48387172F;
B4 = 0.01843137F;
B5 = 0.01353918F;
break;
// Hann, Marshall, Hanus(2003) FRL Research Contribution 40
case FiaCode.TsugaHeterophylla:
B0 = -0.761609F;
B1 = -0.529366F;
B2 = 0.0F;
B3 = -4.74019F;
B4 = 0.0119587F;
B5 = 0.00756365F;
break;
// WH of Hann, Marshall, Hanus(2003) FRL Research Contribution 40
case FiaCode.ThujaPlicata:
B0 = -0.761609F;
B1 = -0.529366F;
B2 = 0.0F;
B3 = -4.74019F;
B4 = 0.0119587F;
B5 = 0.00756365F;
break;
// Hann and Hanus(2001) FRL Research Contribution 34
case FiaCode.AcerMacrophyllum:
B0 = -2.976822456F;
B1 = 0.0F;
B2 = 0.0F;
B3 = -6.223250962F;
B4 = 0.0F;
B5 = 0.0F;
break;
// Hann and Hanus(2001) FRL Research Contribution 34
case FiaCode.CornusNuttallii:
B0 = -3.020345211F;
B1 = 0.0F;
B2 = 0.0F;
B3 = -8.467882343F;
B4 = 0.013966388F;
B5 = 0.009461545F;
break;
// best guess
case FiaCode.Salix:
B0 = -1.386294361F;
B1 = 0.0F;
B2 = 0.0F;
B3 = 0.0F;
B4 = 0.0F;
B5 = 0.0F;
break;
default:
throw Trees.CreateUnhandledSpeciesException(trees.Species);
}
// BUGBUG: Fortran code didn't use red alder site index for red alder and used hemlock site index for all conifers, not just hemlock and redcedar
float siteIndex = stand.HemlockSiteIndex; // interpreted as Douglas-fir site index
if (trees.Species == FiaCode.AlnusRubra)
{
siteIndex = stand.SiteIndex;
}
else if ((trees.Species == FiaCode.TsugaHeterophylla) || (trees.Species == FiaCode.ThujaPlicata))
{
siteIndex = OrganonVariantNwo.ToHemlockSiteIndexStatic(siteIndex); // convert from Douglas-fir site index to actual hemlock site inde
}
for (int treeIndex = 0; treeIndex < trees.Count; ++treeIndex)
{
if (trees.LiveExpansionFactor[treeIndex] <= 0.0F)
{
continue;
}
float dbhInInches = trees.Dbh[treeIndex];
float basalAreaLarger = densityBeforeGrowth.GetBasalAreaLarger(dbhInInches);
float crownRatio = trees.CrownRatio[treeIndex];
float PMK = B0 + B1 * dbhInInches + B2 * dbhInInches * dbhInInches + B3 * crownRatio + B4 * siteIndex + B5 * basalAreaLarger + fertilizationExponent;
float XPM = 1.0F / (1.0F + MathV.Exp(-PMK));
float survivalProbability = POW == 1.0 ? 1.0F - XPM : MathV.Pow(1.0F - XPM, POW); // RAP is the only variant using unfertlized POW != 1
survivalProbability *= OrganonGrowth.GetCrownRatioAdjustment(crownRatio);
Debug.Assert(survivalProbability >= 0.0F);
Debug.Assert(survivalProbability <= 1.0F);
float newLiveExpansionFactor = survivalProbability * trees.LiveExpansionFactor[treeIndex];
if (newLiveExpansionFactor < 0.00001F)
{
newLiveExpansionFactor = 0.0F;
}
float mortalityExpansionFactor = trees.LiveExpansionFactor[treeIndex] - newLiveExpansionFactor;
trees.DeadExpansionFactor[treeIndex] = mortalityExpansionFactor;
trees.LiveExpansionFactor[treeIndex] = newLiveExpansionFactor;
}
}
public override float GetGrowthEffectiveAge(OrganonConfiguration configuration, OrganonStand stand, Trees trees, int treeIndex, out float potentialHeightGrowth)
{
float growthEffectiveAge;
if (trees.Species == FiaCode.AlnusRubra)
{
// GROWTH EFFECTIVE AGE AND POTENTIAL HEIGHT GROWTH FROM WEISKITTEL, HANN, HIBBS, LAM, AND BLUHM (2009) RED ALDER TOP HEIGHT GROWTH
float siteIndexFromGround = stand.SiteIndex + 4.5F;
RedAlder.WHHLB_HG(siteIndexFromGround, configuration.PDEN, trees.Height[treeIndex], 1.0F, out growthEffectiveAge, out potentialHeightGrowth);
}
else if (trees.Species == FiaCode.TsugaHeterophylla)
{
// POTENTIAL HEIGHT GROWTH FROM FLEWELLING'S WESTERN HEMLOCK DOMINANT HEIGHT GROWTH
// BUGBUG: why isn't redcedar also on this code path?
float siteIndexFromGround = OrganonVariantNwo.ToHemlockSiteIndexStatic(stand.HemlockSiteIndex); // stand.HemlockSiteIndex is interpreted as PSME site index
WesternHemlock.SiteConstants tsheSite = new WesternHemlock.SiteConstants(siteIndexFromGround);
growthEffectiveAge = WesternHemlock.GetFlewellingGrowthEffectiveAge(tsheSite, this.TimeStepInYears, trees.Height[treeIndex], out potentialHeightGrowth);
}
else
{
// POTENTIAL HEIGHT GROWTH FROM BRUCE'S (1981) DOMINANT HEIGHT GROWTH FOR DOUGLAS-FIR AND GRAND FIR
DouglasFir.SiteConstants psmeSite = new DouglasFir.SiteConstants(stand.HemlockSiteIndex); // stand.HemlockSiteIndex is interpreted as PSME site index
growthEffectiveAge = DouglasFir.GetBrucePsmeAbgrGrowthEffectiveAge(psmeSite, this.TimeStepInYears, trees.Height[treeIndex], out potentialHeightGrowth);
}
return(growthEffectiveAge);
}
public override int GrowHeightBigSix(OrganonConfiguration configuration, OrganonStand stand, Trees trees, float[] crownCompetitionByHeight)
{
// WEIGHTED CENTRAL PAI PROCEDURE PARAMETERS FOR RED ALDER
float P1;
float P2;
float P3;
float P4;
float P5;
float P6;
float P7;
float P8;
switch (trees.Species)
{
// Hann, Bluhm, and Hibbs Red Alder Plantation Analysis
case FiaCode.AlnusRubra:
P1 = 0.809837005F;
P2 = -0.0134163653F;
P3 = -0.0609398629F;
P4 = 0.5F;
P5 = 1.0F;
P6 = 2.0F;
P7 = 0.1469442410F;
P8 = 1.0476380753F;
break;
// Hann, Marshall, and Hanus(2006) FRL Research Contribution ??
case FiaCode.PseudotsugaMenziesii:
P1 = 0.655258886F;
P2 = -0.006322913F;
P3 = -0.039409636F;
P4 = 0.5F;
P5 = 0.597617316F;
P6 = 2.0F;
P7 = 0.631643636F;
P8 = 1.010018427F;
break;
// Johnson(2002) Willamette Industries Report
case FiaCode.TsugaHeterophylla:
P1 = 1.0F;
P2 = -0.0384415F;
P3 = -0.0144139F;
P4 = 0.5F;
P5 = 1.04409F;
P6 = 2.0F;
P7 = 0.0F;
P8 = 1.03F;
break;
default:
throw Trees.CreateUnhandledSpeciesException(trees.Species);
}
int oldTreeRecordCount = 0;
for (int treeIndex = 0; treeIndex < trees.Count; ++treeIndex)
{
if (trees.LiveExpansionFactor[treeIndex] <= 0.0F)
{
trees.HeightGrowth[treeIndex] = 0.0F;
continue;
}
float growthEffectiveAge = configuration.Variant.GetGrowthEffectiveAge(configuration, stand, trees, treeIndex, out float potentialHeightGrowth);
float crownCompetitionIncrement = OrganonVariant.GetCrownCompetitionFactorByHeight(trees.Height[treeIndex], crownCompetitionByHeight);
float crownRatio = trees.CrownRatio[treeIndex];
float FCR = -P5 *MathV.Pow(1.0F - crownRatio, P6) * MathV.Exp(P7 * MathF.Sqrt(crownCompetitionIncrement));
float B0 = P1 * MathV.Exp(P2 * crownCompetitionIncrement);
float B1 = MathV.Exp(P3 * MathV.Pow(crownCompetitionIncrement, P4));
float MODIFER = P8 * (B0 + (B1 - B0) * MathV.Exp(FCR));
float CRADJ = OrganonGrowth.GetCrownRatioAdjustment(crownRatio);
float heightGrowth = potentialHeightGrowth * MODIFER * CRADJ;
Debug.Assert(heightGrowth > 0.0F);
trees.HeightGrowth[treeIndex] = heightGrowth;
if (growthEffectiveAge > configuration.Variant.OldTreeAgeThreshold)
{
++oldTreeRecordCount;
}
}
return(oldTreeRecordCount);
}
/// <summary>
/// Computes old growth index?
/// </summary>
/// <param name="stand">Stand data.</param>
/// <param name="incrementMultiplier">Zero or minus one, usually zero.</param>
/// <param name="OG">Old growth indicator.</param>
/// <remarks>
/// Supports only to 99 inch DBH.
/// </remarks>
public static float GetOldGrowthIndicator(OrganonVariant variant, OrganonStand stand)
{
// TODO: move diameter class and stand density information into stand for simplified state management and reduced compute
int diameterClasses = 100;
float[] treesPerAcreByDiameterClass = new float[diameterClasses];
float[] weightedDbhByDiameterClass = new float[diameterClasses];
float[] weightedHeightByDiameterClass = new float[diameterClasses];
foreach (Trees treesOfSpecies in stand.TreesBySpecies.Values)
{
if (variant.IsBigSixSpecies(treesOfSpecies.Species) == false)
{
continue;
}
for (int treeIndex = 0; treeIndex < treesOfSpecies.Count; ++treeIndex)
{
float dbhInInches = treesOfSpecies.Dbh[treeIndex];
int dbhIndex = (int)dbhInInches;
if (dbhIndex >= treesPerAcreByDiameterClass.Length)
{
dbhIndex = treesPerAcreByDiameterClass.Length - 1;
}
float expansionFactor = treesOfSpecies.LiveExpansionFactor[treeIndex];
Debug.Assert(expansionFactor >= 0.0F);
Debug.Assert(expansionFactor <= Constant.Maximum.ExpansionFactor);
treesPerAcreByDiameterClass[dbhIndex] += expansionFactor;
weightedDbhByDiameterClass[dbhIndex] += expansionFactor * dbhInInches;
weightedHeightByDiameterClass[dbhIndex] += expansionFactor * treesOfSpecies.Height[treeIndex];
}
}
float largestFiveTpaWeightedHeight = 0.0F;
float largestFiveTpaWeightedDbh = 0.0F;
float largeTreeTpa = 0.0F;
for (int dbhIndex = weightedHeightByDiameterClass.Length - 1; dbhIndex >= 0; --dbhIndex)
{
largestFiveTpaWeightedHeight += weightedHeightByDiameterClass[dbhIndex];
largestFiveTpaWeightedDbh += weightedDbhByDiameterClass[dbhIndex];
largeTreeTpa += treesPerAcreByDiameterClass[dbhIndex];
if (largeTreeTpa > 5.0F)
{
float TRDIFF = treesPerAcreByDiameterClass[dbhIndex] - (largeTreeTpa - 5.0F);
largestFiveTpaWeightedHeight = largestFiveTpaWeightedHeight - weightedHeightByDiameterClass[dbhIndex] + ((weightedHeightByDiameterClass[dbhIndex] / treesPerAcreByDiameterClass[dbhIndex]) * TRDIFF);
largestFiveTpaWeightedDbh = largestFiveTpaWeightedDbh - weightedDbhByDiameterClass[dbhIndex] + ((weightedDbhByDiameterClass[dbhIndex] / treesPerAcreByDiameterClass[dbhIndex]) * TRDIFF);
largeTreeTpa = 5.0F;
break;
}
}
float oldGrowthIndicator = 0.0F;
if (largeTreeTpa > 0.0F)
{
float HT5 = largestFiveTpaWeightedHeight / largeTreeTpa;
float DBH5 = largestFiveTpaWeightedDbh / largeTreeTpa;
oldGrowthIndicator = DBH5 * HT5 / 10000.0F;
Debug.Assert(oldGrowthIndicator >= 0.0F);
Debug.Assert(oldGrowthIndicator <= 1000.0F);
}
return(oldGrowthIndicator);
}
public static void ReduceExpansionFactors(OrganonConfiguration configuration, int simulationStep, OrganonStand stand, OrganonStandDensity densityBeforeGrowth)
{
foreach (Trees treesOfSpecies in stand.TreesBySpecies.Values)
{
FiaCode species = treesOfSpecies.Species;
float fertilizationExponent = OrganonMortality.GetMortalityFertilizationAdjustment(species, configuration.Variant.TreeModel, simulationStep, configuration.Treatments);
configuration.Variant.ReduceExpansionFactors(stand, densityBeforeGrowth, treesOfSpecies, fertilizationExponent);
}
}
