Grazing activities perhaps lead to habitat quality degradation and animal biodiversity loss while the effects on the Qinghai-Tibet Plateau (QTP) is still relatively poorly studied. Based on the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) model, geographical detector model and generalized linear mixed model (GLMM), the responses of habitat quality and animal biodiversity to grazing activities at 5 km grid scale were analyzed. Results showed that the overall habitat quality on the QTP was high with 76.43% of the total area, and poor level accounted for19.56%. High level habitat was mainly distributed in the southern part, while the poor level in the northern part. The mean grazing activity explanatory ability to habitat quality, bird species richness and mammal richness were 0.346, 0.430 and 0.354. The interaction effects between slope and grazing activities on habitat quality, bird species richness and mammal richness were the most important interaction effects, and the area affected by the interaction was 73.82%, 46.00% and 46.17% of habitat quality, bird species richness and mammal richness, respectively. The interaction effects on habitat quality, bird species richness and mammal richness all showed “low in the northwest and high in the southeast”. Grazing activities and habitat quality had a positive correlation while bird species richness, and mammal richness negative correlations. The spatial relationship of grazing activities of habitat quality was “higher in the middle and lower around the periphery”, while the spatial distribution of grazing activities of bird species richness and mammal richness was “higher in the east and lower in the west”. This study explicitly revealed the responses of habitat quality and animal biodiversity to grazing activities, thus providing references for biodiversity conservation on the QTP.

中文翻译：

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青藏高原生境质量和动物生物多样性对放牧活动的响应

放牧活动可能导致栖息地质量下降和动物生物多样性丧失，而对青藏高原的影响研究相对较少。基于生态系统服务与权衡综合评估（InVEST）模型，地理检测器模型以及广义线性混合模型（GLMM），分析了5 km网格尺度上栖息地质量和动物生物多样性对放牧活动的响应。结果表明，QTP的总体生境质量较高，占总面积的76.43％，差的占19.56％。高水平的栖息地主要分布在南部，而北部则较差。放牧活动对生境质量，鸟类物种丰富度和哺乳动物丰富度的平均解释能力分别为0.346、0.430和0.354。坡度和放牧活动对栖息地质量，鸟类物种丰富度和哺乳动物丰富度的相互作用影响是最重要的相互作用效应，受相互作用影响的面积分别为栖息地质量，鸟类物种丰富度和哺乳动物的73.82％，46.00％和46.17％丰富度。相互作用对栖息地质量，鸟类物种丰富度和哺乳动物丰富度的影响都显示为“西北低，东南高”。放牧活动与生境质量呈正相关，鸟类物种丰富度与哺乳动物丰富度呈负相关。栖息地质量的放牧活动在空间上的关系“在中部较高，在周边较低”，鸟类物种丰富度和哺乳动物丰富度的放牧活动空间分布“东部较高，西部较低”。这项研究明确揭示了生境质量和动物生物多样性对放牧活动的反应，从而为QTP上的生物多样性保护提供了参考。