Research Article

Water Conservation Service Assessment and Its Spatiotemporal Features in National Key Ecological Function Zones

Figure 7

Spatial distribution and change of water conservation in NKEFZ ((a) WR of observation in the NKEFZ of 2000; (b) WR of observation in the NKEFZ of 2014; (c) WR change of observation in the NKEFZ; (d) WR change of simulation in the NKEFZ).
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