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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摘要以2021年为基准年,基于地质灾害隐患点调查数据、环境统计数据、DEM数据及水质监测断面数据等,以1km×1km网格为基本单元,按照“地质灾害-风险源-传输途径-敏感受体”评估框架,采用风险场评估法对长江上游开展地质灾害次生突发水污染风险分区评估.结果表明:①高风险区面积为22534.1km²,占比2.3%;中风险区面积为105239.1km²,占比10.7%;低风险区面积为857694.4km²,占比87.0%;②从空间分布来看,高风险区主要分布在重庆市、陇南市东南部、绵阳市中部、南充市北部、阿坝州东南部、雅安市南部、凉山州中部、德阳市西部等;③从重点河流沿岸空间分布来看,高风险区主要分布在长江干流重庆段,金沙江攀枝花段,嘉陵江陇南段、南充段,岷江成都段、阿坝州段,雅砻江凉山州段等.

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	周夏飞
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	徐翔宇
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	徐泽升
	曹国志
	王鲲鹏

关键词 ：长江上游, 地质灾害, 水污染, 风险, 网格

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

收稿日期: 2023-12-09

PACS:

X32

基金资助:国家自然科学基金资助项目(42277491);长江生态环境保护修复联合研究(第二期)(2022-LHYJ-02-0201)

通讯作者: 曹国志,副研究员,caogz@caep.org.cn E-mail: caogz@caep.org.cn

作者简介: 周夏飞(1991-),男,湖南衡阳人,天津大学博士研究生,主要从事生态环境风险评估与应急管理研究.发表论文10余篇.zhouxf@caep.org.cn.

引用本文:

周夏飞, 周胜森, 徐翔宇, 解明礼, 徐泽升, 曹国志, 王鲲鹏. 长江上游地质灾害次生突发水污染风险分区研究[J]. 中国环境科学, 2024, 44(7): 3999-4008. ZHOU Xia-fei, ZHOU Sheng-sen, XU Xiang-yu, Xie Ming-li, XU Ze-sheng, CAO Guo-zhi, WANG Kun-peng. Study on the risk zoning of secondary sudden water pollution caused by geological disasters in the upper reaches of the Yangtze River. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(7): 3999-4008.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2024/V44/I7/3999

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