Land cover category

2009 (km²)

2018 (km²)

Change (km²)

% Change

Bare ground

37.38

28.83

−8.55

−23

Forest

35.97

41.56

+5.59

+16

Grassland

85.56

69.78

−15.78

−18

Lake

35.59

54.10

+18.51

+52

Sewage pond

0.13

0.08

−0.05

−38