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| DOI：10.13522/j.cnki.ggps.2024400 |
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| Health of aquatic ecosystems in the urban areas of the Central Plains within the Yellow River Basin |
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GUO Ruili, HUO Ruina, XIAO Jing, SUN Sihui, YUAN Yue
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1. Eco-environment Monitoring and Safety Center of Puyang City, Puyang 457000, China;
2. Chinese Research Academy of Environmental Sciences, Beijing 100000, China
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| Abstract: |
| 【Objective】 The Central Plains of the Yellow River Basin play a vital role in regional economic development but face increasing challenges from rapid urbanisation and uneven water resource distribution. This study analyses the current status and spatiotemporal changes of urban water ecosystem health in the region.【Method】Treating the urban water ecosystem as a living organism, a comprehensive evaluation index system was established, incorporating hydrodynamics, water management, and service functions. The entropy weight method was applied to quantitatively assess and compare the health of urban aquatic ecosystems across ten cities in the Central Plains.【Result】① Water use per 10 000 yuan of GDP exhibited the highest information entropy and thus carried the greatest weight in the evaluation system. ② Jiyuan City achieved the highest comprehensive health score, followed by Zhengzhou and Sanmenxia, whereas Kaifeng and Xinxiang ranked lowest. ③ In Puyang City, aquatic ecosystem health improved steadily from 2013 to 2022, peaking in 2021 before experiencing a slight decline in 2022.【Conclusion】 Water use efficiency is the most critical factor influencing the health of urban aquatic ecosystems in the Central Plains. Regional disparities in water resource utilization are key drivers of uneven urban development. Water-scarce cities should prioritize improving water resource availability, management structures, and operational efficiency to enhance the resilience and sustainability of their aquatic ecosystems. |
| Key words: Yellow River Basin; water ecosystem; entropy method; water dynamics |
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