Authors
Yong Ao, Zhi-Hao Ding, Yong-Hua Zhao, Yun Ni, Fu-Xing Huang, Min Li
Published in
Huan jing ke xue= Huanjing kexue. Volume 47. Issue 6. Pages 4017-4028. Jun 08, 2026.
Abstract
Ecological vulnerability and ecological resilience， as important indicators of ecosystem health， are of great significance in characterizing ecosystem response to external disturbances， restoration capacity， and weighing regional ecological protection and development and construction. Based on multi-source data， quantitative evaluation indicators were constructed to analyze the spatiotemporal characteristics of ecological fragility and ecological resilience in the Hanjiang River Basin. Additionally， the coupling coordination degree model and kernel density analysis methods were employed to investigate the spatiotemporal coupling characteristics between ecological fragility and ecological resilience. Furthermore， the Z-score standardization method was utilized to identify the "resilience-vulnerability risk" ecological zones in the Hanjiang River Basin. The results of the study show that： ① From 2000 to 2023， the ecological vulnerability index of the Hanjiang River Basin as a whole showed a steady decline in the changes in the spatial distribution of the upper reaches of the high， middle， and lower reaches of the lower spatial distribution characteristics. The Hanjiang River Basin Comprehensive Ecological Vulnerability Index as a whole showed a stable trend of good changes； 2010 as a turning point showed a decline in the trend of the changes in the rise after the decline in the low toughness level and the proportion of areas with a lower toughness level gradually reduced， and the proportion of areas with a lower toughness level gradually decreased. The proportion of low toughness level and lower toughness level was gradually decreasing， and the number of areas with high toughness level was gradually increasing. ② The ecological vulnerability and ecological toughness coupling coordination degree of the Hanjiang River Basin from 2000 to 2023 was mainly between 0.4-0.9， and the overall situation was in the "coordinated" state， but the regional coupling degree was between different levels of coordination， and the phenomenon of bifurcation was more obvious. It was evident that there was an urgent need to optimize the regional ecological balance through more delicate ecological management and restoration strategies. ③ Combined with the "toughness-vulnerability risk" ecological zoning， the Hanjiang River Basin was divided into a high toughness-high vulnerability risk zone， low toughness-high vulnerability risk zone， low toughness-low vulnerability risk zone， and high toughness-low vulnerability risk zone， so as to further optimize the ecological balance and stability of the river basin through finer ecological zoning and to promote the coordinated and sustainable development of the region. Through finer ecological zoning， we can further optimize the ecological balance and stability in the basin， promote the coordination and sustainability of regional development， and provide scientific support for promoting the ecological protection and high-quality development of the Han River Basin.
PMID:
42336442
Bibliographic data and abstract were imported from PubMed on 24 Jun 2026.
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