//--------------------------------------------------------------------- public void CohortPartialMortality(object sender, Landis.Library.BiomassCohorts.PartialDeathEventArgs eventArgs) { ExtensionType disturbanceType = eventArgs.DisturbanceType; ActiveSite site = eventArgs.Site; double reduction = eventArgs.Reduction; ICohort cohort = (Landis.Library.LeafBiomassCohorts.ICohort)eventArgs.Cohort; float fractionPartialMortality = (float)eventArgs.Reduction; //PlugIn.ModelCore.UI.WriteLine("Cohort experienced partial mortality: species={0}, age={1}, wood_biomass={2}, fraction_mortality={3:0.0}.", cohort.Species.Name, cohort.Age, cohort.WoodBiomass, fractionPartialMortality); AgeOnlyDisturbances.PoolPercentages cohortReductions = AgeOnlyDisturbances.Module.Parameters.CohortReductions[disturbanceType]; float foliar = cohort.LeafBiomass * fractionPartialMortality; float wood = cohort.WoodBiomass * fractionPartialMortality; float foliarInput = AgeOnlyDisturbances.Events.ReduceInput(foliar, cohortReductions.Foliar, site); float woodInput = AgeOnlyDisturbances.Events.ReduceInput(wood, cohortReductions.Wood, site); ForestFloor.AddWoodLitter(woodInput, cohort.Species, site); ForestFloor.AddFoliageLitter(foliarInput, cohort.Species, site); Roots.AddCoarseRootLitter(woodInput, cohort, cohort.Species, site); // All of cohorts roots are killed. Roots.AddFineRootLitter(foliarInput, cohort, cohort.Species, site); //PlugIn.ModelCore.UI.WriteLine("EVENT: Cohort Partial Mortality: species={0}, age={1}, disturbance={2}.", cohort.Species.Name, cohort.Age, disturbanceType); //PlugIn.ModelCore.UI.WriteLine(" Cohort Reductions: Foliar={0:0.00}. Wood={1:0.00}.", cohortReductions.Foliar, cohortReductions.Wood); //PlugIn.ModelCore.UI.WriteLine(" InputB/TotalB: Foliar={0:0.00}/{1:0.00}, Wood={2:0.0}/{3:0.0}.", foliarInput, foliar, woodInput, wood); return; }
//--------------------------------------------------------------------- public void CohortDied(object sender, Landis.Library.BiomassCohorts.DeathEventArgs eventArgs) { ExtensionType disturbanceType = eventArgs.DisturbanceType; ActiveSite site = eventArgs.Site; ICohort cohort = (Landis.Library.LeafBiomassCohorts.ICohort)eventArgs.Cohort; double foliar = (double)cohort.LeafBiomass; double wood = (double)cohort.WoodBiomass; PlugIn.ModelCore.UI.WriteLine("Cohort Died: species={0}, age={1}, biomass={2}, foliage={3}.", cohort.Species.Name, cohort.Age, cohort.Biomass, foliar); if (disturbanceType == null) { //PlugIn.ModelCore.UI.WriteLine("NO EVENT: Cohort Died: species={0}, age={1}, disturbance={2}.", cohort.Species.Name, cohort.Age, eventArgs.DisturbanceType); ForestFloor.AddWoodLitter(wood, cohort.Species, eventArgs.Site); ForestFloor.AddFoliageLitter(foliar, cohort.Species, eventArgs.Site); Roots.AddCoarseRootLitter(wood, cohort, cohort.Species, eventArgs.Site); Roots.AddFineRootLitter(foliar, cohort, cohort.Species, eventArgs.Site); } if (disturbanceType != null) { //PlugIn.ModelCore.UI.WriteLine("DISTURBANCE EVENT: Cohort Died: species={0}, age={1}, disturbance={2}.", cohort.Species.Name, cohort.Age, eventArgs.DisturbanceType); Disturbed[site] = true; if (disturbanceType.IsMemberOf("disturbance:fire")) { Landis.Library.Succession.Reproduction.CheckForPostFireRegen(eventArgs.Cohort, site); } else { Landis.Library.Succession.Reproduction.CheckForResprouting(eventArgs.Cohort, site); } } }
//--------------------------------------------------------------------- private void UpdateDeadBiomass(ICohort cohort, ActiveSite site, double[] totalMortality) { double mortality_wood = (double)totalMortality[0]; double mortality_nonwood = (double)totalMortality[1]; // Add mortality to dead biomass pools. // Coarse root mortality is assumed proportional to aboveground woody mortality // mass is assumed 25% of aboveground wood (White et al. 2000, Niklas & Enquist 2002) if (mortality_wood > 0.0) { ForestFloor.AddWoodLitter(mortality_wood, cohort.Species, site); Roots.AddCoarseRootLitter(mortality_wood, cohort, cohort.Species, site); } if (mortality_nonwood > 0.0) { AvailableN.AddResorbedN(cohort, totalMortality[1], site); //ignoring input from scorching, which is rare, but not resorbed. ForestFloor.AddResorbedFoliageLitter(mortality_nonwood, cohort.Species, site); Roots.AddFineRootLitter(mortality_nonwood, cohort, cohort.Species, site); } return; }
//--------------------------------------------------------------------- /// <summary> /// Computes the change in a cohort's biomass due to Annual Net Primary /// Productivity (ANPP), age-related mortality (M_AGE), and development- /// related mortality (M_BIO). /// </summary> public float[] ComputeChange(ICohort cohort, ActiveSite site) { ecoregion = PlugIn.ModelCore.Ecoregion[site]; // First call to the Calibrate Log: if (PlugIn.ModelCore.CurrentTime > 0 && OtherData.CalibrateMode) { Outputs.CalibrateLog.Write("{0},{1},{2},{3},{4},{5:0.0},{6:0.0},", PlugIn.ModelCore.CurrentTime, Main.Month + 1, ecoregion.Index, cohort.Species.Name, cohort.Age, cohort.WoodBiomass, cohort.LeafBiomass); } double siteBiomass = Main.ComputeLivingBiomass(SiteVars.Cohorts[site]); if (siteBiomass < 0) { throw new ApplicationException("Error: Site biomass < 0"); } // ****** Mortality ******* // Age-related mortality includes woody and standing leaf biomass. double[] mortalityAge = ComputeAgeMortality(cohort, site); // Growth-related mortality double[] mortalityGrowth = ComputeGrowthMortality(cohort, site); double[] totalMortality = new double[2] { Math.Min(cohort.WoodBiomass, mortalityAge[0] + mortalityGrowth[0]), Math.Min(cohort.LeafBiomass, mortalityAge[1] + mortalityGrowth[1]) }; double nonDisturbanceLeafFall = totalMortality[1]; // ****** Growth ******* double[] actualANPP = ComputeActualANPP(cohort, site, siteBiomass, mortalityAge); double scorch = 0.0; defoliatedLeafBiomass = 0.0; if (Main.Month == 6) //July = 6 { if (SiteVars.FireSeverity != null && SiteVars.FireSeverity[site] > 0) { scorch = FireEffects.CrownScorching(cohort, SiteVars.FireSeverity[site]); } if (scorch > 0.0) // NEED TO DOUBLE CHECK WHAT CROWN SCORCHING RETURNS { totalMortality[1] = Math.Min(cohort.LeafBiomass, scorch + totalMortality[1]); } // Defoliation (index) ranges from 1.0 (total) to none (0.0). if (PlugIn.ModelCore.CurrentTime > 0) //Skip this during initialization { int cohortBiomass = (int)(cohort.LeafBiomass + cohort.WoodBiomass); defoliation = Landis.Library.Biomass.CohortDefoliation.Compute(site, cohort.Species, cohortBiomass, (int)siteBiomass); } if (defoliation > 1.0) { defoliation = 1.0; } if (defoliation > 0.0) { defoliatedLeafBiomass = (cohort.LeafBiomass) * defoliation; if (totalMortality[1] + defoliatedLeafBiomass - cohort.LeafBiomass > 0.001) { defoliatedLeafBiomass = cohort.LeafBiomass - totalMortality[1]; } //PlugIn.ModelCore.UI.WriteLine("Defoliation.Month={0:0.0}, LeafBiomass={1:0.00}, DefoliatedLeafBiomass={2:0.00}, TotalLeafMort={2:0.00}", Main.Month, cohort.LeafBiomass, defoliatedLeafBiomass , mortalityAge[1]); ForestFloor.AddFrassLitter(defoliatedLeafBiomass, cohort.Species, site); } } else { defoliation = 0.0; defoliatedLeafBiomass = 0.0; } // RMS 03/2016: Additional mortality as reaching capacity limit: SAVE FOR NEXT RELEASE //double maxBiomass = SpeciesData.B_MAX_Spp[cohort.Species][ecoregion]; //double limitCapacity = Math.Min(1.0, Math.Exp(siteBiomass / maxBiomass * 5.0) / Math.Exp(5.0)); // 1.0 = total limit; 0.0 = No limit //totalMortality[0] += (actualANPP[0] * limitCapacity); // totalMortality not to exceed ANPP allocation if (totalMortality[0] <= 0.0 || cohort.WoodBiomass <= 0.0) { totalMortality[0] = 0.0; } if (totalMortality[1] <= 0.0 || cohort.LeafBiomass <= 0.0) { totalMortality[1] = 0.0; } if ((totalMortality[0]) > cohort.WoodBiomass) { PlugIn.ModelCore.UI.WriteLine("Warning: WOOD Mortality exceeds cohort wood biomass. M={0:0.0}, B={1:0.0}", (totalMortality[0]), cohort.WoodBiomass); PlugIn.ModelCore.UI.WriteLine("Warning: If M>B, then list mortality. Mage={0:0.0}, Mgrow={1:0.0},", mortalityAge[0], mortalityGrowth[0]); throw new ApplicationException("Error: WOOD Mortality exceeds cohort biomass"); } if ((totalMortality[1] + defoliatedLeafBiomass - cohort.LeafBiomass) > 0.01) { PlugIn.ModelCore.UI.WriteLine("Warning: LEAF Mortality exceeds cohort biomass. Mortality={0:0.000}, Leafbiomass={1:0.000}", (totalMortality[1] + defoliatedLeafBiomass), cohort.LeafBiomass); PlugIn.ModelCore.UI.WriteLine("Warning: If M>B, then list mortality. Mage={0:0.00}, Mgrow={1:0.00}, Mdefo={2:0.000},", mortalityAge[1], mortalityGrowth[1], defoliatedLeafBiomass); throw new ApplicationException("Error: LEAF Mortality exceeds cohort biomass"); } float deltaWood = (float)(actualANPP[0] - totalMortality[0]); float deltaLeaf = (float)(actualANPP[1] - totalMortality[1] - defoliatedLeafBiomass); float[] deltas = new float[2] { deltaWood, deltaLeaf }; //if((totalMortality[1] + defoliatedLeafBiomass) > cohort.LeafBiomass) // PlugIn.ModelCore.UI.WriteLine("Warning: Leaf Mortality exceeds cohort leaf biomass. M={0:0.0}, B={1:0.0}, DefoLeafBiomass={2:0.0}, defoliationIndex={3:0.0}", totalMortality[1], cohort.LeafBiomass, defoliatedLeafBiomass, defoliation); UpdateDeadBiomass(cohort, site, totalMortality); CalculateNPPcarbon(site, cohort, actualANPP); AvailableN.AdjustAvailableN(cohort, site, actualANPP); if (OtherData.CalibrateMode && PlugIn.ModelCore.CurrentTime > 0) { Outputs.CalibrateLog.WriteLine("{0:0.00},{1:0.00},{2:0.00},{3:0.00},", deltaWood, deltaLeaf, totalMortality[0], totalMortality[1]); //Outputs.CalibrateLog.WriteLine("{0:0.00}, {1:0.00}, {2:0.00}", resorbedNused, mineralNused, totalNdemand); } return(deltas); }