青海省沿黄12县自然灾害活动特征及承灾体脆弱性评价  

Characteristics of Natural Disasters in 12 Counties along the Yellow River in Qinghai Province and Vulnerability Evaluation of Hazard-Bearing Body

作　　者：隋欣[1] 杨志峰[1] 

机构地区：[1]北京师范大学环境学院水环境模拟国家重点实验室水沙教育部重点实验室,北京100875

出　　处：《灾害学》2004年第3期7-13,共7页Journal of Catastrophology

基　　金：国家科技攻关项目(2002BA901A34);国家重点基础研究发展计划973项目(G19990436-05)资助

摘　　要：根据1949～2000年青海省沿黄12县的地质、地震和区域气候资料,对青海省黄河干流水电梯级开发已建龙羊峡和李家峡水库蓄水前后自然灾害的活动特征进行了分析。在此基础上,依据层次性、代表性、易得性、客观性和可统计性等原则,建立了适于评价县域承灾体脆弱性的指标体系,并采用加权分级评分法对其进行了量化评估,以揭示区域未来成灾趋势。评价结果表明,湟中、湟源、民和、化隆、循化、尖扎、共和是洪涝、干旱、病虫害、地质和地震灾害的高发区,承灾体也非常脆弱。Characteristics of natural disasters that occurred before and after the Longyangxia and Lijiaxia Reservoirs were filled are analyzed based on related geologic, climatic and seismic disasters data of total 52 years (1949～2000) in 12 counties along the Yellow River channel in Qinghai Province. In order to assess hazard trend of these counties, a series of indicators are established according to the principles of the representativeness, hierarchy, acquisitiveness, preciseness and comparability. A weight-grade method is used to assess hazard vulnerability of 12 counties. Results obtained show that flood and waterlogging, plague of insects, geologic and seismic disasters occurred frequently in counties of Huangzhong, Huangyuan, Minhe, Hualong, Xunhua, Gonghe and Jianzha and hazard-bearing body in these counties are also vulnerable.

关 键 词：自然灾害 承灾体脆弱性 梯级开发 黄河流域青海段 

分 类 号：X43[环境科学与工程—灾害防治]