【摘要】 全球地表变绿对减缓区域变暖、促进生态平衡和可持续发展至关重要，中国在过去30年中对此做出了不可忽视的贡献，并通过快速增加植被覆盖度有效缓解了土地退化、水资源匮乏和空气污染等环境问题.已有研究表明，植被对缓解水土流失有积极作用，但在中国区域尚缺乏陆地尺度、长时序和高分辨率的植被演变下径流侵蚀与沉积输送的定量描述.鉴于此，基于RUSLE模型和多源卫星遥感数据，分析了1990～2020年中国植被缓解水土流失的时空变化及其与多驱动因子间的关联机制.研究结果表明：(1)中国区域植被缓解水土流失量(VAE)的比例增加了2.71%,主要集中在胡焕庸线附近；(2)植被缓解水土流失的效率显著提高，尤其是森林，占总体约为76.50%.以期对水土流失防控、土壤生态改善、植被动态规划和区域可持续发展有参考意义.更多还原

【Abstract】 The greening of the global surface is crucial to mitigating regional warming, promoting ecological balance and sustainable development, and China has made a significant contribution to this in the past three decades and has effectively alleviated the problem of land degradation by rapidly increasing vegetation coverage.Environmental problems such as degradation, water scarcity and air pollution.Previous studies have shown that vegetation has a positive effect on mitigating water and soil erosion, but there is still a lack of quantitative description of runoff erosion and sediment transport under land-scale, long-term and high-resolution vegetation evolution in China.In response to this, this article uses the RUSLE model and multi-source satellite remote sensing data to analyze the spatiotemporal changes in China’s vegetation mitigation of soil erosion from 1990 to 2020,and its correlation mechanism with multiple driving factors.The results show that:(1)The proportion of regional vegetation in China that has significantly increased the amount of water and soil erosion(VAE) has increased by 2.71%,mainly concentrated near the Hu Huanyong Line;(2)The efficiency of vegetation in mitigating water and soil erosion has increased significantly, especially forests, accounting for about is 76.50%.The research conclusions are of great significance to soil erosion prevention and control, soil ecological improvement, vegetation dynamic planning and regional sustainable development.更多还原