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[1]Zhou Jianwei,Wu Hua,Xu Tong,et al.Terrain gradient differentiation and driving factors of ecosystem service value of the Yalong River Basin in Tibet[J].Research of Soil and Water Conservation,2025,32(02):396-406.[doi:10.13869/j.cnki.rswc.2025.02.032]

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Terrain gradient differentiation and driving factors of ecosystem service value of the Yalong River Basin in Tibet

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 32 Number of periods: 2025 02 Page number: 396-406 Column: Public date: 2025-01-20

Title:: Terrain gradient differentiation and driving factors of ecosystem service value of the Yalong River Basin in Tibet

Author(s):: Zhou Jianwei, Wu Hua, Xu Tong, Chen Linna, Kong Yuzhong, Zhao Xinyong, Guo Qiyun, Li Jiatong, Zhang Zelin, Zhu Kangcheng, Zhang Chenguang; (1.School of Ecology and Environment, Tibet University, Lhasa 850000, China; 2.Joint Laboratory of Plateau Surface Remote Sensing, Tibet University, Lhasa 850000, China; 3.School of Engineering, Tibet University, Lhasa 850000, China)

Keywords:: ecosystem service value; terrain gradient; spatial differentiation; driving factors; Yalong River Basin

CLC:: X171.1

DOI:: 10.13869/j.cnki.rswc.2025.02.032

Abstract:: [Objective]The aims of this study are to analyze the spatiotemporal changes of ecosystem service value(ESV)in the Yalong River Basin, and to provide scientific underpinnings for the ecological civilization development of the watershed. [Methods]High-resolution land use data, terrain gradient stratification, standard deviational ellipse and Geodetector were utilized to study the changes and terrain gradient differentiation in ESV over the past two decades. [Results](1)Grassland was the predominant land use type, accounting for 92.45% of the area. During the study period, there was the decrease in the extent of forestland, shrub, and grassland, while other land types expanded.(2)The ESV of the basin increased by 0.13%(16 million yuan), with spatial distribution characterized by higher values in the southeast and lower values in the northwest. ESV exhibited an initial increase followed by a decrease in relation to elevation, slope, and relief degree of land surface, with higher values on shady slopes compared to sunny slopes.(3)The spatial distribution and centroid of the ESV shifted southwestward and became more concentrated over time. Spatial differentiation of ESV was influenced by both natural and economic factors, with mean annual ground temperature being the dominant factor(q=0.24), and interactions between any two factors enhanced this differentiation. [Conclusion]To promote the sustainable development of the ecological environment in Yalong River Basin, it is essential to adopt the measures tailored to local conditions based on the spatiotemporal and topographical distribution characteristics of ESV within the basin.

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Last Update: 2025-01-20