Evaluation of the water conservation function in the Ili River Delta of Central Asia based on the InVEST model
CAO Yijie, MA Yonggang, BAO Anming, CHANG Cun, LIU Tie
Fig. 9 Spatial distribution of grassland (with different levels of coverage) and forest land in the IRD in 1990 (a), 2000 (b), 2015 (c), and 2020 (d)