Nitrogen Output Variables

AGLIVE(1) - Crop/grass: N in aboveground live biomass (g m^-2).

AMINRL(1) - Monthly average mineral N in simulation depth before uptake by plants (g N m^-2 month^-1).

BGLIVE(1) - N in belowground live biomass (g m^-2).

CROOTE(1) - N in forest system coarse root component (g m^-2).

CRPSTG(1) - Retranslocation N storage pool for grassland/crop (g m^-2).

EFERT(1) - Fertilization: monthly amount of N entering soil pools (gN m^-2 month^-1).

EGRACC(1) - Annual cumulative N in grain + tuber production (g m^-2 year^-1).

EGRAIN(1) - Economic yield of N in grain + tubers (g m^-2 month^-1).

ELIMIT - Indicator of the limiting element = 1 if N is the limiting element = 2 if P is the limiting element = 3 if S is the limiting element.

EPRODC(1) - Actual monthly N uptake in a crop/grass system (g m^-2 month^-1).

EPRODF(1) - Actual monthly N uptake in forest system (g m^-2 month^-1).

ERETFA(1) - E (1 = N) amount RETurned by Fire Annually (g m^-2 year^-1).

ERETGA(1) - E (1 = N) amount RETurned by Grazing Annually (g m^-2 year^-1).

ERMVST(1) - Monthly N removed as straw during harvest (g m^-2).

ESRSNK(1) - N source/sink (g m^-2).

EUPACC(1) - Growing season accumulator for N uptake by plants (g m^-2 year^-1).

EUPAGA(1) - Aboveground growing season accumulator for N uptake by plants (g m^-2 year^-1).

EUPBGA(1) - Belowground growing season accumulator for N uptake by plants (g m^-2 year^-1).

EUPPRT(1,1) - Growing season accumulator for N uptake by forest leaf component (g m^-2 year^-1).

EUPPRT(2,1) - Growing season accumulator for N uptake by forest fine roots component (g m^-2 year^-1).

EUPPRT(3,1) - Growing season accumulator for N uptake by forest fine branches component (g m^-2 year^-1).

EUPPRT(4,1) - Growing season accumulator for N uptake by forest large wood component (g m^-2 year^-1).

EUPPRT(5,1) - Growing season accumulator for N uptake by forest coarse roots component (g m^-2 year^-1).

FBRCHE(1) - N in forest system fine branch component (g m^-2).

FERTOT(1) - Fertilization: annual amount of N entering soil pools (gN m^-2 year^-1).

FORSTG(1) - Retranslocation N storage pool for forest (g m^-2).

FROOTE(1) - N in forest system fine root component (g m^-2).

FRSTE(1) - Sum of N in forest system live components ( RLEAVE(1) + FROOTE(1) + FBRCHE(1) + RLWODE(1) + CROOTE(1)) (g m^-2).

FSYSE(1) - Total N in forest system i.e. sum of soil organic matter, trees, dead wood, forest litter (g m^-2).

GROMIN(1) - Monthly gross mineralization of N from decomposition (g m^-2).

LHZEAC(1) - Accumulator for N inputs to 0-20 cm layer from the lower horizon pools associated with soil erosion (g m^-2).

METABE(1,1) - Metabolic N in surface litter (g m^-2).

METABE(2,1) - Metabolic N in belowground litter (g m^-2).

METMNR(1,1) - Net mineralization for N for aboveground metabolic litter (g m^-2).

METMNR(2,1) - Net mineralization for N for belowground metabolic litter (g m^-2).

MINERL(1,1) through MINERL(9,1) - Mineral N content for soil layers 1 through the lesser of 9 or the number of soil layers (g m^-2).

MINERL(10,1) - Deep storage layer for N leached (g m^-2).

NFIX - Monthly symbiotic N fixation (g m^-2).

NFIXAC - Annual cumulative symbiotic N fixation (g m^-2 year^-1).

PARENT(1) - Parent material N (g m^-2).

RLEAVE(1) - N in forest system leaf component (g m^-2).

RLWODE(1) - N in forest system large wood component (g m^-2).

RNPML1 - Mineral N / P ratio used to control soil N - fixation using a regression equation based on Kansas data.

S1MNR(1,1) - Net mineralization for N for surface microbes SOM1E(1,1) (g m^-2).

S1MNR(2,1) - Net mineralization for N for active pool SOM1E(2,1) (g m^-2).

S2MNR(1) - Net mineralization for N for slow pool SOM2E(1) (g m^-2).

S3MNR(1) - Net mineralization for N for passive pool SOM3E(1) (g m^-2).

SDRFAE(1) - Standing Dead Returned by Fire Annual E (1=N) amount, including structural and metabolic litter components (g m^-2 year^-1).

SDRGAE(1) - Standing Dead Returned by Grazing Annual E (1=N) amount, including structural and metabolic litter components (g m^-2 year^-1).

SECNDY(1) - Secondary N (g m^-2).

SHRFAE(1) - SHoots Returned by Fire Annual E (1=N) amount (g m^-2 year^-1).

SHRGAE(1) - SHoots Returned by Grazing Annual E (1=N) amount (g m^-2 year^-1).

SNFXAC(1) - Annual cumulative symbiotic N fixation for crop system (g m^-2 year^-1).

SNFXAC(2) - Annual cumulative symbiotic N fixation for forest system (g m^-2 year^-1).

SOILNM(1) - Annual cumulative net mineralization of N in soil compartments (soil organic matter + belowground litter + dead coarse roots) (g m^-2 year^-1).

SOM1E(1,1) - N in surface microbe pool (g m^-2).

SOM1E(2,1) - N in active soil organic matter (g m^-2).

SOM2E(1) - N in slow pool soil organic matter (g m^-2).

SOM3E(1) - N in passive soil organic matter (g m^-2).

SOMSE(1) - Sum of N in SOM1E(2,1), SOM2E, and SOM3E (g m^-2).

SOMTE(1) - Total N in soil organic matter including belowground structural + metabolic (g m^-2).

STDEDE(1) - N in standing dead (g m^-2).

STREAM(2) - N from mineral leaching of stream flow (base flow + storm flow) (g m^-2). (Stored in the Water and Temperature Output set.)

STREAM(6) - N from organic leaching of stream flow (base flow + storm flow) (g m^-2). (Stored in the Water and Temperature Output set.)

STRMNR(1,1) - Net mineralization for N for surface structural litter (g m^-2).

STRMNR(2,1) - Net mineralization for N for belowground structural litter (g m^-2).

STRUCE(1,1) - Surface litter structural N (g m^-2).

STRUCE(2,1) - Belowground litter structural N (g m^-2).

SUMNRS(1) - Annual cumulative net mineralization of N from all compartments except structural and wood (g m^-2 year^-1).

TCERAT(1) - Total C / N ratio in soil organic matter including belowground structural + metabolic.

TCNPRO - Total C / N ratio for production.

TEREM(1) - Cumulative N removed in aboveground live and dead biomass due to forest removal (cutting and fire) events during the simulation (g m^-2).

TMINRL(1) - Total mineral N for the soil rooting depth per month (g m^-2 month^-1).

TNETMN(1) - Annual cumulative net mineralization for N from all compartments in the surface and soil simulation layer (g m^-2 year^-1).

TOTALE(1) - Total N including source/sink (g m^-2).

VOLEX - Volatilization loss of N as a function of mineral N remaining after uptake by plants (denitrification) (g m^-2 month^-1). In DayCent5, this includes N₂O from denitrification and N₂.

VOLEXA - Annual N volatilization as a function of N remaining after uptake by plants (denitrification) (g m^-2 year^-1).

VOLGM - Volatilization loss of N as a function of gross mineralization (nitrification) (g m^-2 month^-1).

VOLGMA - Annual N volatilization as a function of gross mineralization (nitrification) (g m^-2 year^-1). In DayCent5, this includes N₂O from nitrification and NO.

VOLPL - Volatilization of N from plants at harvest for grain crops and at senescence for grasses (g m^-2 month^-1).

VOLPLA - Annual N volatilization from plants at harvest for grain crops and at senescence for grasses (g m^-2 year^-1).

W1MNR(1) - N mineralized from the dead fine branch component of forest system (g m^-2).

W2MNR(1) - N mineralized from the dead large wood component of forest system (g m^-2).

W3MNR(1) - N mineralized from the dead coarse root component of forest system (g m^-2).

WDFX - Annual sum of atmospheric N fixation and non-symbiotic soil N fixation based on annual precipitation (WDFXA + WDFXS) (g m^-2 year^-1).

WDFXA - Annual N fixation in atmosphere (wet and dry deposition) (g m^-2 year^-1).

WDFXAA - Annual accumulator for N fixation from atmospheric inputs that is transferred to the soil mineral N pools (g m^-2 year^-1).

WDFXAS - Annual accumulator for non-symbiotic soil N fixation that is transferred to the soil mineral N pools (g m^-2 year^-1).

WDFXMA - Monthly N fixation from atmospheric inputs that is transferred to the soil mineral N pools (g m^-2 month^-1).

WDFXMS - Monthly non-symbiotic soil N fixation that is transferred to the soil mineral N pools (g m^-2 month^-1).

WDFXS - Annual non-symbiotic soil N fixation based on precipitation rather than the soil N / P ratio (g m^-2 year^-1).

WOOD1E(1) - N in dead fine branch component of forest system (g m^-2).

WOOD2E(1) - N in dead large wood component of forest system (g m^-2).

WOOD3E(1) - N in dead coarse roots component of forest system (g m^-2).

WOODE(1) - Sum of N in wood components of forest system (g m^-2).