Spatio-temporal variation analysis of water resources carrying capacity in the Yellow River basin (Gansu section) in collaboration with entropy weight method and TOPSIS model

doi:10.13474/j.cnki.11-2246.2024.1004.

Abstract

Abstract: Based on the statistical, territorial survey and image data of 2009,2012,2015,2018 and 2021, the entropy weight method and TOPSIS model are used to collaborative analysis the water resources carrying capacity of 57 county-level administrative regions in the Yellow River basin(Gansu section). The results show that: ①From 2009 to 2021, the number of county-level administrative districts with low levels of water resources subsystem, socio-economic subsystem and ecological environment subsystem in the Yellow River basin (Gansu section) decreased significantly, while the number of high levels increased. ②The regions of the Yellow River basin (Gansu section) with unsatisfactory water resources carrying capacity are concentrated in Longzhong and Longdong, while the regions of Maqu, Luqu, Zhuoni and Xiahe county with medium ideal, relatively ideal and ideal water resources carrying capacity are concentrated in Gannan plateau. ③During the study period, the water resources carrying capacity in most regions of the Yellow River basin (Gansu section) is stable or increased. This also reflects the remarkable results of environmental governance in the past two decades, and the steady improvement of water conservation capacity and comprehensive utilization efficiency of water resources.

Key words: water resources carrying capacity, index system, entropy weight method, TOPSIS model, the Yellow River basin(Gansu section)

CLC Number:

P236

YANG Xuewen, LIU Xiaohui, YE Pingping, WANG Xufeng, ZHANG Yali. Spatio-temporal variation analysis of water resources carrying capacity in the Yellow River basin (Gansu section) in collaboration with entropy weight method and TOPSIS model[J]. Bulletin of Surveying and Mapping, 2024, 0(10): 18-24.

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