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Two Decades of Ecological Quality Evolution Along the Sichuan-Tibet Highway: Improvement, Localized Degradation and Grazing Intensity Dominating Changes Post-2010

文献类型：期刊论文

作者Liu, Zhenghe1; Dai, Erfu2,3,4,5; Xing, Shuo2,4; Zhou, Liang1
刊名LAND DEGRADATION & DEVELOPMENT
出版日期2025-07-21
卷号N/A
关键词ecological policies ecological quality RSEI soil erosion
ISSN号1085-3278
DOI10.1002/ldr.70078
产权排序2
文献子类Article ; Early Access
英文摘要The environmental quality and soil erosion dynamics of the eastern margin of the Tibetan Plateau are vital to regional sustainability, since it is an ecologically sensitive area. In this study, we combined the Remote Sensing Ecological Index (RSEI) and Modified Universal Soil Loss Equation (RUSLE) model to develop a Composite Ecological Quality Index (CEQI). This approach was used to examine the spatio-temporal distribution patterns and driving factors of ecological quality and soil erosion in the transition zone from the Tibetan Plateau-Hengduan Mountains to Chengdu Plain, over the past 20 years (2000-2020). The CEQI results showed a 24% improvement in the study area's ecological quality, and a major east-west gradient difference was observed, with the eastern plains experiencing significant improvements as a result of China's Grain-for-Green Project. Moreover, the central and western high-altitude areas experienced environmental degradation due to the impact of human activities, such as grazing intensity and changes in natural factors that caused the RSEI to decrease by 10%. This study also found a 2.61% increase in soil erosion modulus, with severe erosion concentrated in the Qamdo-Nagqu area where the interaction between climate change and topography was a key driver in the spatial differentiation. The optimal parameters-based geographical detector (OPGD) and random forest model (RFM) further showed that precipitation, temperature, and land use dominated changes in environmental quality before 2010. The combined effects of grazing intensity, temperature, and precipitation explained the changes in ecological quality after 2010 with the government's implementation of environmental policies.
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WOS关键词SOIL-EROSION ; CLIMATE-CHANGE ; IMPACTS ; WATER
WOS研究方向Environmental Sciences & Ecology ; Agriculture
语种英语
WOS记录号WOS:001531984100001
出版者WILEY
源URL[http://ir.igsnrr.ac.cn/handle/311030/215381]  
专题拉萨站高原生态系统研究中心_外文论文
通讯作者Dai, Erfu
作者单位1.Lanzhou Jiaotong Univ, Sch Geomat & Geog Informat, Lanzhou, Gansu, Peoples R China;
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China;
3.Beijing Normal Univ, Xining, Peoples R China
4.Univ Chinese Acad Sci, Beijing, Peoples R China;
5.Qinghai Normal Univ, Acad Plateau Sci & Sustainabil, Xining, Peoples R China;
推荐引用方式
GB/T 7714		 Liu, Zhenghe,Dai, Erfu,Xing, Shuo,et al. Two Decades of Ecological Quality Evolution Along the Sichuan-Tibet Highway: Improvement, Localized Degradation and Grazing Intensity Dominating Changes Post-2010[J]. LAND DEGRADATION & DEVELOPMENT,2025,N/A.
APA Liu, Zhenghe,Dai, Erfu,Xing, Shuo,&Zhou, Liang.(2025).Two Decades of Ecological Quality Evolution Along the Sichuan-Tibet Highway: Improvement, Localized Degradation and Grazing Intensity Dominating Changes Post-2010.LAND DEGRADATION & DEVELOPMENT,N/A.
MLA Liu, Zhenghe,et al."Two Decades of Ecological Quality Evolution Along the Sichuan-Tibet Highway: Improvement, Localized Degradation and Grazing Intensity Dominating Changes Post-2010".LAND DEGRADATION & DEVELOPMENT N/A(2025).

入库方式： OAI收割

来源：地理科学与资源研究所

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