Our trend in the Simpson index was almost opposite to that of Zuo’s et al.’s [39] findings that there was an increasing trend in the Simpson index in the processes of grassland degradation.
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Effect of degradation intensity on grassland ecosystem services in the alpine region of Qinghai-Tibetan Plateau, China.
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Results Primary Production/Aboveground Biomass Aboveground biomasses showed a decreasing trend with increasing pasture degradation ( Figure 1 ).