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.
出处
《灾害学》
CSCD
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
关键词
自然灾害
承灾体脆弱性
梯级开发
黄河流域青海段
natural disasters
vulnerability of hazard-bearing body
cascaded development the
Yellow River Basin in Qinghai
