A quite severe degradation was found in all seven types of grasslands in the study area involving 12 counties of the northwestern Qinghai Province. The slightly, moderately and severely degraded grasslands occupied 49.7/100, 32.0/100 and 18/3/100 of the area respectively. The major factors resulting in the degradation were overgrazing, the damages from mice and grasshopper and blown sands, and improper use of grasslands.
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