Sub-basin

Volume of natural nitrogen (N) in the sub-basin (Kg/year)*

Volume of simulated nitrogen (N) considering the entry from granges (Kg/year)**

Increment (N) Kg/year

4

107,800

158,063.66

50,263.66

20

50,610

100,005.23

49,395.23

10

85,430

131,659.57

46,229.57

30

4875

31,922.05

27,047.05

28

3028

6531.42

3503.42

22

5210

7122.17

1912.17

39

734.6

2162.42

1427.82

24

4049

4569.91

520.91