摘要
分析了华北地区旱灾的特点；采用降水量距平百分率和干旱指数分别确定了单站及区域于旱等级标准，并对近３７ａ这一地区各年主要干旱事件强度（等级）进行了评定，最后建立了干旱受灾面积和成灾面积评估模式。
in this paper, the characteristic of drought disaster is analyzed in NorthChina. By using the percentage of precipitation anomalies and drought index, the standard of drought grade for one station and area are respectively defined, and the maindrought events and their intensity (grade) are assessed in this area for recent 37 years.Finally, the model for assessment of drought-stricken area and area in drought stage isestablished.
出处
《灾害学》
CSCD
1999年第1期65-69,共5页
Journal of Catastrophology
基金
国家"九五"重中之重项目
