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| DOI：10.13522/j.cnki.ggps.2025264 |
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| Assessment of carrying capacity of water resources in Ordos using the GRA-VIKOR model |
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QI Qingqing, ZHAO Yanli, YIN Hang, LAI Hexin, FAN Panpan, ZHANG Zezhong
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1. North China University of Water Resources and Electric Power, Zhengzhou 450046, China; 2. Yinshanbeilu Grassland
Eco-Hydrology National Observation and Research Station, China Institute of Water Resources and Hydropower Research,
Beijing 100038, China; 3. Institute of Water Resources of Pastoral Area, Ministry of Water Resources, Hohhot 010020, China
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| Abstract: |
| 【Objective】Ordos is located in semi-arid Northwestern China, and water scarcity and the uneven distribution of water resources constrain its sustainable socio-economic and ecological development. In this paper, we analyzed the carrying capacity of water resources in this region.【Method】A comprehensive evaluation index system of ‘water resources-socio-economy-ecological environment’ was constructed. The GRA-VIKOR model was used to evaluate the capacity of water resources at the county scale from 2000 to 2023 in the region. The entropy weight method was used to calculate indicator weights, with the computed Qi value serving as the comprehensive evaluation index. An obstacle-degree model was used to identify the main factors that limit water resource carrying capacity.【Result】①The water resource carrying capacity in Ordos steadily improved from 2000 to 2023. The comprehensive evaluation values for Jungar, Hangjin counties and Kangbashi District were relatively low at 0.754, 0.717 and 0.752, respectively, indicating lower water resource carrying capacity. In contrast, water resource carrying capacity in Yijinhuoluo, Otog Front and Uxin counties was relatively high, with evaluation values of 0.914, 0.891 and 0.872, respectively. ②Meeting the requirement for ecological water flow was identified as the most significant obstacle to improving water resource carrying capacity in the region.【Conclusion】The increase in comprehensive evaluation value of water resource carrying capacity from 2000 to 2023 in Ordos demonstrates the effectiveness of water-saving policies and technological upgrades, although meeting ecological water flow requirements remains a primary factor limiting further improvement. Establishing systems to regulate the allocation of reclaimed water resources and ecological water flow, and to incorporate biodiversity indicators, is essential for strengthening decision-making in water resource resilience management in this region. |
| Key words: carrying capacity; Ordos; water resources |
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