Types of land use
Area in 1990 (km2) Area in 2020 (km2) Proportion in 1990 Proportion in 2020 Proportion change from 1990 to 2020
Cropland 78170.3 79346.29 36.40% 36.95% 0.55%
Forest land 57142.74 74836.64 26.61% 34.85% 8.24%
Grassland 69226.26 45670.23 32.23% 21.27% -10.97%
Water 2830.98 1188.85 1.32% 0.55% -0.76%
Built-up areas 6596.23 12605.26 3.07% 5.87% 2.80%
Unused land 789.80 1109.04 0.37% 0.52% 0.15%
Total 214756.31 214756.31 100.00% 100.00%