摘要
分析华北地区干旱的特点，指出干旱是该地区最突出的气象灾害；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干旱等级标准，并对近４０年主要干旱事件强度（等级）进 行评定；最后依据干旱指数建立了干旱受灾面积和成灾面积评估模式，以及干旱经济损失评估 模式。评估结果与实际基本吻合。
In this paper, the characteristic of drought disaster in China is analyzed. It's pointed out that droughts are major meteorological disasters in this area. The standards of drought grade for single station and area are defined by using the percentage of precipitation anomalies and drought index. In addition, the main drought events and their intensity (grades)are assessed in this area for recent 40years. Finally, assessment the model of area covered by drought, the area affected by drought and the economic losses of agriculture by drought is established according the drought index. The assessing results coincide with the facts in the main.
出处
《地理学报》
EI
CSCD
北大核心
2000年第B11期39-45,共7页
Acta Geographica Sinica
基金
国家"九五"重中之重项目!(96-908-83-03-2)&&
