subroutine pl_partition(j) use plant_data_module use basin_module use hru_module, only : ipl use plant_module use carbon_module use organic_mineral_mass_module implicit none integer, intent (in) :: j !none |HRU number integer :: idp = 0 ! | real :: root_frac = 0. !none |root mass fraction real :: ab_gr_frac = 0. !none |above ground mass fraction real :: leaf_mass_frac = 0. !none |leaf mass fraction of above ground biomass real :: stem_mass_frac = 0. !none |stem mass fraction of above ground biomass real :: seed_mass_frac = 0. !none |stem mass fraction of above ground biomass real :: n_left = 0. !none |n left after seed is removed real :: n_frac = 0. !none |n fraction in remainder of plant real :: p_left = 0. !none |p left after seed is removed real :: p_frac = 0. !none |p fraction in remainder of plant real :: m_left = 0. !none |mass left after seed is removed real :: leaf_frac_veg = 0. !none |fraction veg mass (stem+leaf) that is leaf real :: leaf_mass_frac_veg = 0. !none |fraction veg mass (stem+leaf) that is leaf idp = pcom(j)%plcur(ipl)%idplt !! update plant mass for daily biomass/c increase pl_mass(j)%tot(ipl)%m = pl_mass(j)%tot(ipl)%m + pl_mass_up%m pl_mass(j)%tot(ipl)%c = pl_mass(j)%tot(ipl)%c + pl_mass_up%c !! partition leaf and stem (stalk) and seed (grain) mass if (pldb(idp)%typ == "perennial") then leaf_frac_veg = 0.05 !forest else leaf_frac_veg = 0.30 !should be plant parm end if leaf_mass_frac_veg = leaf_frac_veg * pcom(j)%plg(ipl)%lai / pcom(j)%plcur(ipl)%lai_pot !! partition root and above ground biomass for tuber crops if (pldb(idp)%typ == "warm_annual_tuber" .or. pldb(idp)%typ == "cold_annual_tuber") then root_frac = pcom(j)%plg(ipl)%root_frac !! for tubers, the tuber (or seed) is not part of ab_gr --> tot = root + ab_gr + seed !! 1. = root + ab_gr + hi * ab_gr --> solve for ab_gr ab_gr_frac = (1. - root_frac) / (1. + pcom(j)%plg(ipl)%hi_adj) seed_mass_frac = 1. - root_frac - ab_gr_frac leaf_mass_frac = leaf_mass_frac_veg * ab_gr_frac stem_mass_frac = (1. - leaf_mass_frac_veg) * ab_gr_frac else !! partition root and above ground biomass for all other annuals (above ground grain) root_frac = pcom(j)%plg(ipl)%root_frac ab_gr_frac = 1. - root_frac seed_mass_frac = pcom(j)%plg(ipl)%hi_adj leaf_mass_frac = leaf_mass_frac_veg * (1. - seed_mass_frac) stem_mass_frac = 1. - (leaf_mass_frac_veg + seed_mass_frac) end if pl_mass(j)%ab_gr(ipl)%m = ab_gr_frac * pl_mass(j)%tot(ipl)%m pl_mass(j)%root(ipl)%m = root_frac * pl_mass(j)%tot(ipl)%m pl_mass(j)%leaf(ipl)%m = leaf_mass_frac * pl_mass(j)%ab_gr(ipl)%m pl_mass(j)%seed(ipl)%m = seed_mass_frac * pl_mass(j)%ab_gr(ipl)%m pl_mass(j)%stem(ipl)%m = stem_mass_frac * pl_mass(j)%ab_gr(ipl)%m !! partition carbon with constant fractions pl_mass(j)%leaf(ipl)%c = c_frac%leaf * pl_mass(j)%leaf(ipl)%m pl_mass(j)%stem(ipl)%c = c_frac%stem * pl_mass(j)%stem(ipl)%m pl_mass(j)%seed(ipl)%c = c_frac%seed * pl_mass(j)%seed(ipl)%m pl_mass(j)%root(ipl)%c = c_frac%root * pl_mass(j)%root(ipl)%m pl_mass(j)%ab_gr(ipl)%c = pl_mass(j)%leaf(ipl)%c + pl_mass(j)%stem(ipl)%c + pl_mass(j)%seed(ipl)%c pl_mass(j)%tot(ipl)%c = pl_mass(j)%ab_gr(ipl)%c + pl_mass(j)%root(ipl)%c !! partition n and p if (pldb(idp)%typ == "perennial") then !! partition leaves and seed (stem is woody biomass) m_left = pl_mass(j)%leaf(ipl)%m + pl_mass(j)%stem(ipl)%m + pl_mass(j)%root(ipl)%m if (m_left > 1.e-9) then pl_mass(j)%seed(ipl)%n = pldb(idp)%cnyld * pl_mass(j)%seed(ipl)%m n_left = pl_mass(j)%tot(ipl)%n - pl_mass(j)%seed(ipl)%n !! if n is neg after seed is removed - assume 0 n in seed - plant database cnyld and fr_n_mat are off if (n_left < 0.) then pl_mass(j)%seed(ipl)%n = 0. n_left = pl_mass(j)%seed(ipl)%n + n_left end if !! partition n_left between remaining masses - assume equal concentrations pl_mass(j)%leaf(ipl)%n = n_left * pl_mass(j)%leaf(ipl)%m / m_left pl_mass(j)%stem(ipl)%n = n_left * pl_mass(j)%stem(ipl)%m / m_left pl_mass(j)%root(ipl)%n = n_left * pl_mass(j)%root(ipl)%m / m_left pl_mass(j)%ab_gr(ipl)%n = pl_mass(j)%seed(ipl)%n + pl_mass(j)%leaf(ipl)%n + pl_mass(j)%stem(ipl)%n pl_mass(j)%seed(ipl)%p = pldb(idp)%cpyld * pl_mass(j)%seed(ipl)%m p_left = pl_mass(j)%tot(ipl)%p - pl_mass(j)%seed(ipl)%p !! if n is neg after seed is removed - assume 0 n in seed - plant database cnyld and fr_n_mat are off if (p_left < 0.) then pl_mass(j)%seed(ipl)%p = 0. p_left = pl_mass(j)%seed(ipl)%p + p_left end if !! partition p_left between remaining masses - assume equal concentrations pl_mass(j)%leaf(ipl)%p = p_left * pl_mass(j)%leaf(ipl)%m / m_left pl_mass(j)%stem(ipl)%p = p_left * pl_mass(j)%stem(ipl)%m / m_left pl_mass(j)%root(ipl)%p = p_left * pl_mass(j)%root(ipl)%m / m_left pl_mass(j)%ab_gr(ipl)%p = pl_mass(j)%seed(ipl)%p + pl_mass(j)%leaf(ipl)%p + pl_mass(j)%stem(ipl)%p end if else !! annual or grass (stem is stalk) - partition seed (grain) pl_mass(j)%seed(ipl)%n = pldb(idp)%cnyld * pl_mass(j)%seed(ipl)%m !! assume same concentration in rest of plant n_left = pl_mass(j)%tot(ipl)%n - pl_mass(j)%seed(ipl)%n if (n_left < 0.) then pl_mass(j)%seed(ipl)%n = 0.9 * pl_mass(j)%tot(ipl)%n n_left = 0.1 * pl_mass(j)%tot(ipl)%n end if if (pl_mass(j)%tot(ipl)%m - pl_mass(j)%seed(ipl)%m > 1.e-6) then n_frac = n_left / (pl_mass(j)%tot(ipl)%m - pl_mass(j)%seed(ipl)%m) else n_frac = 0. end if pl_mass(j)%leaf(ipl)%n = n_frac * pl_mass(j)%leaf(ipl)%m pl_mass(j)%stem(ipl)%n = n_frac * pl_mass(j)%stem(ipl)%m pl_mass(j)%root(ipl)%n = n_frac * pl_mass(j)%root(ipl)%m pl_mass(j)%ab_gr(ipl)%n = pl_mass(j)%seed(ipl)%n + pl_mass(j)%leaf(ipl)%n + pl_mass(j)%stem(ipl)%n pl_mass(j)%seed(ipl)%p = pldb(idp)%cpyld * pl_mass(j)%seed(ipl)%m !! assume same concentration in rest of plant p_left = pl_mass(j)%tot(ipl)%p - pl_mass(j)%seed(ipl)%p if (p_left < 0.) then pl_mass(j)%seed(ipl)%p = 0.9 * pl_mass(j)%tot(ipl)%p p_left = 0.1 * pl_mass(j)%tot(ipl)%p end if if (pl_mass(j)%tot(ipl)%m - pl_mass(j)%seed(ipl)%m > 1.e-6) then p_frac = p_left / (pl_mass(j)%tot(ipl)%m - pl_mass(j)%seed(ipl)%m) else p_frac = 0. end if pl_mass(j)%leaf(ipl)%p = p_frac * pl_mass(j)%leaf(ipl)%m pl_mass(j)%stem(ipl)%p = p_frac * pl_mass(j)%stem(ipl)%m pl_mass(j)%root(ipl)%p = p_frac * pl_mass(j)%root(ipl)%m pl_mass(j)%ab_gr(ipl)%p = pl_mass(j)%seed(ipl)%p + pl_mass(j)%leaf(ipl)%p + pl_mass(j)%stem(ipl)%p end if return end subroutine pl_partition