Under the influence of climate warming, overgrazing may exacerbate ecosystem degradation. To determine the safe grazing boundaries and potential degradation areas in different regions. The study used the Generalize Linear Model (GLM) to assess the combined effects of drought and grazing on the ecosystem services of the Tibetan Plateau (TP), and identified safe grazing boundaries and overgrazing areas. The study indicated that, except in arid regions (25.58 Mu/km2), the average safe grazing boundary in other areas exceeded 50 Mu/km2. Under the influence of drought, between 2000 and 2018, an average of 28.65% of the TP's grazing intensity exceeded the safe boundary of ecosystem services, mainly in the central parts of the semi-arid, semi-humid, and humid/semi-humid regions. The results suggest that determining safe grazing boundaries can help in the rational planning of grazing intensity and space, promoting the efficient use of ecological resources and providing a reference for the sustainable development of the TP.
Keywords: Arid; Ecosystem service; Graze; Safe boundary; Tibetan plateau.
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