Nutrient balance output can be printed at basin, LSU, HRU, and HRU-lte level by entering "y" in the basin_nb, lsunit_nb, hru_nb, and hru-lte_nb lines in print.prt, respectively. Nutrient balance output can be printed at daily, monthly, yearly, and average annual time steps. The names of the nutrient balance output files are as follows:
basin_nb_day.txt
basin_nb_mon.txt
basin_nb_yr.txt
basin_nb_aa.txt
lsunit_nb_day.txt
lsunit_nb_mon.txt
lsunit_nb_yr.txt
lsunit_nb_aa.txt
hru_nb_day.txt
hru_nb_mon.txt
hru_nb_yr.txt
hru_nb_aa.txt
Field
Description
Unit
jday
Julian day
n/a
mon
Month
n/a
day
Day of the month
n/a
yr
Year
n/a
unit
ID of the object
n/a
gis_id
Object ID in GIS
n/a
name
Name of the object or SWAT+ setup (basin outputs)
n/a
grzn
Total nitrogen added to soil from grazing
kg/ha
grzp
Total phosphorus added to soil from grazing
kg/ha
lab_min_p
Phosphorus moving from the labile mineral pool to the active mineral pool
kg/ha
act_sta_p
Phosphorus moving from the active mineral pool to the stable mineral pool
kg/ha
fertn
Total nitrogen applied to soil through fertilization
kg/ha
fertp
Total phosphorus applied to soil through fertilization
kg/ha
fixn
Nitrogen added to plant biomass via fixation
kg/ha
denit
Nitrogen lost from nitrate pool by denitrification
kg/ha
act_nit_n
Nitrogen moving from active organic pool to nitrate pool
kg/ha
act_sta_n
Nitrogen moving from active organic pool to stable pool
kg/ha
org_lab_p
Phosphorus moving from the organic pool to labile pool
kg/ha
rsd_nitorg_n
Nitrogen moving from the fresh organic pool (residue) to the nitrate (80%) and active organic (20%) pools
kg/ha
rsd_laborg_p
Phosphorus moving from the fresh organic pool (residue) to the labile (80%) and organic (20%) pools
kg/ha
no3atmo
Nitrate added to the soil from atmospheric deposition
kg/ha
nh4atmo
Ammonia added to the soil from atmospheric deposition
kg/ha
nuptake
Plant nitrogen uptake
kg/ha
puptake
Plant phosphorus uptake
kg/ha
gwtrann
Nitrate added to the soil from the aquifer (gwflow module)
kg/ha
gwtranp
Phosphorus added to the soil from the aquifer (gwflow module)
kg/ha