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.
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:①The 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;②The 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.
作者
么嘉棋
李静
陈敏
曹永强
胡朵朵
莫凡
徐南
YAO Jiaqi;LI Jing;CHEN Min;CAO Yongqiang;HU Duoduo;MO Fan;XU Nan(Academy of Eco-civilization Development for Jing-Jin-Ji Megalopolis,Tianjin Normal University,Tianjin 300387,China;Key Laboratory of Water Management and Water Security for Yellow River Basin,Ministry of Water Resources(Under Construction),Zhengzhou 450003,China;State key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China;Guoxin Sinan(Beijing)Geographic Information Technology Co.,Ltd.,Hangzhou 311121,China;Land Satellite Remote Sensing Application Center,MNR,Beijing 100089,China;School of Architecture and Urban Planning,Shenzhen University,Shenzhen 518060,China)
出处
《应用基础与工程科学学报》
北大核心
2026年第1期111-122,共12页
Journal of Basic Science and Engineering
基金
水利部黄河流域水治理与水安全重点实验室(筹)研究基金项目(2022-SYSJJ-04)
水利部京津冀水安全保障重点实验室开放课题(IWHR-JJJ-202402)
国家自然科学基金项目(52209029,42301501,52079060)
清华大学地球系统数值模拟教育部重点实验室开放课题
阿里巴巴达摩院AI Earth联合创新研究计划项目。
