//start killing trees gradually at the 80 % longevity until they reach their longevity
// modified version of function : void SUCCESSION::kill(SPECIE *s, SPECIESATTR *sa)
public static void KillTrees(uint local_r, uint local_c)
{
site local_site = gl_sites[local_r, local_c];
for (int k = 1; k <= specAtNum; ++k)//sites.specNum
{
int longev = gl_spe_Attrs[k].Longevity;
int numYears = longev / 5;
float chanceMod = 0.8f / (numYears + 0.00000001f);
float chanceDeath = 0.2f;
int m_beg = (longev - numYears) / gl_sites.SuccessionTimeStep;
int m_end = longev / gl_sites.SuccessionTimeStep;
specie local_specie = local_site.SpecieIndex(k);
for (int m = m_beg; m <= m_end; m++)
{
int tmpTreeNum = (int)local_specie.getTreeNum(m, k);
int tmpMortality = 0;
if (tmpTreeNum > 0)
{
float local_threshold = chanceDeath * gl_sites.SuccessionTimeStep / 10;
for (int x = 1; x <= tmpTreeNum; x++)
{
if (system1.frand() < local_threshold)
{
tmpMortality++;
}
}
local_specie.setTreeNum(m, k, Math.Max(0, tmpTreeNum - tmpMortality));
}
chanceDeath += chanceMod;
}
}
}
public static void succession_Landis70(pdp ppdp, int itr)
{
gl_sites.GetMatureTree();
//increase ages
for (uint i = 1; i <= snr; ++i)
{
for (uint j = 1; j <= snc; ++j)
{
ppdp.addedto_sTSLMortality(i, j, (short)gl_sites.SuccessionTimeStep);
//define land unit
landunit l = gl_sites.locateLanduPt(i, j);
if (l != null && l.active())
{
site local_site = gl_sites[i, j];
for (int k = 1; k <= specAtNum; ++k)
{
local_site.SpecieIndex(k).GrowTree();
}
}
}
//Console.ReadLine();
}
//seed dispersal
initiateRDofSite_Landis70();
Console.WriteLine("Seed Dispersal:");
for (uint i = 1; i <= snr; ++i)
{
//Console.WriteLine("\n{0}%\n", 100 * i / snr);
for (uint j = 1; j <= snc; ++j)
{
//Console.WriteLine("i = {0}, j = {1}", i, j);
landunit l = gl_sites.locateLanduPt(i, j);
KillTrees(i, j);
if (itr == 90 && i == 193 && j == 156)
{
Console.WriteLine("watch: {0}:{1}", "kill trees", gl_sites[193, 156].SpecieIndex(2).getAgeVector(1));
}
if (l != null && l.active())
{
float local_RD = gl_sites[i, j].RD;
if (local_RD < l.MaxRDArray(0))
{
gl_sites.SiteDynamics(0, i, j);
}
else if (local_RD >= l.MaxRDArray(0) && local_RD < l.MaxRDArray(1))
{
gl_sites.SiteDynamics(1, i, j);
}
else if (local_RD >= l.MaxRDArray(1) && local_RD <= l.MaxRDArray(2))
{
gl_sites.SiteDynamics(2, i, j);
}
else if (local_RD > l.MaxRDArray(2) && local_RD <= l.MaxRDArray(3))
{
gl_sites.SiteDynamics(3, i, j);
}
else
{
Debug.Assert(local_RD > l.MaxRDArray(3));
gl_sites.SiteDynamics(4, i, j);
}
}
}
}
Console.WriteLine("end succession_Landis70 once");
}