长江上游地质灾害次生突发水污染风险分区研究

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Abstract This study proposed a risk assessment framework of "geological hazards-risk sources-transmission pathways-sensitive receptors" and conducted a zoning assessment of secondary sudden water pollution risks from geological disasters in the upper reaches of the Yangtze River. The risk field assessment method was employed in this work and a 1km×1km grid is the basic unit. A set of data was utilized and processed by the authors, including geological disaster hidden danger points Survey data, environmental statistics data, DEM data and water quality monitoring section data. The results show that: ① The high-risk area is 22,534.1km², accounting for 2.3% of the total area; 105,239.1km² and 10.7%, 857, 694.4km² and 87.0% for medium-risk and low-risk areas separately. ② From the perspective of spatial distribution, high-risk areas are mainly located in Chongqing, the southeastern part of Longnan, the central part of Mianyang, the northern part of Nanchong, the southeastern part of Aba Prefecture, the southern part of Ya'an, the central part of Liangshan Prefecture, and the western part of Deyang. ③ In terms of the spatial distribution along key riverbanks, the high-risk areas are mainly distributed along the Chongqing section of the Yangtze River, the Panzhihua section of the Jinsha River, the Longnan and Nanchong sections of the Jialing River, the Chengdu and Aba sections of the Min River, and the Liangshan Prefecture section of the YaLung River.

Key words： Upper Yangtze River geological disasters water pollution risk grid

Received: 09 December 2023

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X32

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	Articles by authors
	ZHOU Xia-fei
	ZHOU Sheng-sen
	XU Xiang-yu
	Xie Ming-li
	XU Ze-sheng
	CAO Guo-zhi
	WANG Kun-peng

Cite this article:

ZHOU Xia-fei,ZHOU Sheng-sen,XU Xiang-yu等. Study on the risk zoning of secondary sudden water pollution caused by geological disasters in the upper reaches of the Yangtze River[J]. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(7): 3999-4008.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2024/V44/I7/3999

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