Lang Yang1,2, Yulei Tang1,3, Jiapan Yan1, Guanzhong Zeng1, Meng Li1
1Center for Geophysical Survey, China Geology Survey, Langfang, 065000, China
2Nanchang Hangkong University, Nanchang, 330000, China
3Key Laboratory of Natural Resource Coupling Process and Effects, Beijing, 100055, China
Research on ecological sensitivity can help protect ecosystems, guide ecological restoration, assess disaster risk, and promote sustainable development. By combining the entropy weight method with geographic information system (GIS) and remote sensing (RS) methods, 13 index factors were selected and treated at the grid scale, and quantitative models of soil erosion sensitivity, habitat sensitivity, geohazard sensitivity and ecological protection sensitivity were constructed to assess the comprehensive ecological sensitivity of the Han River basin. At the same time, the geographic probe model is used to analyze each indicator factor to reveal its variability and interaction in spatial and temporal evolution. The results show that: (1) the area of highly and extremely sensitive areas in the study area decreased significantly from 2000 to 2020, and a large number of moderately sensitive areas were transferred to lightly sensitive areas, and the ecological environment was improved. only less than 1% of the highly and extremely sensitive areas in 2020, and the proportion of lightly and moderately sensitive areas accounted for 97.44%.(2) The driving force analysis shows that the overall larger share of erosion sensitivity is attributed to the larger share of soil erosion, and the future ecological protection can focus on erosion control.
Geodetector; Han River Basin; Entropy method; Ecological sensitivity
Lang Yang, Yulei Tang, Jiapan Yan, Guanzhong Zeng, Meng Li. Analysis of Spatial-Temporal Changes in Ecological Sensitivity and Driving Forces in the Han River Basin. Academic Journal of Environment & Earth Science (2023) Vol. 5 Issue 6: 44-49. https://doi.org/10.25236/AJEE.2023.050608.
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