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- Title
滇东南喀斯特区域生态脆弱性的时空演变及其影响因素.
- Authors
王茜; 赵筱青; 普军伟; 岳启发; 陈星宇; 石小倩
- Abstract
Due to its own vulnerability and the disturbance of human activities, ecological problems such as vegetation destruction, soil erosion and rocky desertification in karst areas are prominent. A comprehensive analysis of the ecological vulnerability and its influencing factors in the karst area can provide scientific support for regional ecological restoration and environmental governance. In this study, taking Guangnan County, a typical karst region in southeastern Yunnan, as an example, the karst regional ecological vulnerability assessment index system was constructed from the perspective of natural and human factors, and SPCA was used to invert the ecological vulnerability of 2000, 2010 and 2018, and analyze its time and space. Evolution characteristics, and use geographic detectors to explore its influencing factors. The results show that from 2000 to 2018, the overall vulnerability of Guangnan County has changed little, but the degree of vulnerability has been increasing. In terms of vulnerability level, the county is mainly slightly vulnerable, but mild, moderate and severe vulnerability are gradually increasing. The ecological vulnerability of the south of Guangnan County along "Zhetu-Liancheng-Yangliujing-Banbang" is higher, and the vulnerability to the north is lower; the spatial agglomeration effect of vulnerability is strong, and the north is at low-low vulnerability The southwest and southeast are in the high fragility-high agglomeration area; the implementation of ecological engineering is conducive to the improvement of regional ecological fragility, and the interference of human activities further deteriorates the ecological fragility. The lithology and the proportion of rocky desertification area have a significant impact on the ecological fragility of karst regions. The basis of karst ecological fragility is the development of karst carbonate rocks.
- Subjects
YUNNAN Sheng (China); ECOLOGICAL engineering; CARBONATE rocks; ECOLOGICAL assessment; SOIL erosion; RESTORATION ecology
- Publication
Yingyong Shengtai Xuebao, 2021, Vol 32, Issue 6, p2180
- ISSN
1001-9332
- Publication type
Article
- DOI
10.13287/j.1001-9332.202106.018