湖南省旱情评价指标体系研究  

Research for drought evaluation index system in Hunan province

作　　者：李炳辉[1] 杨礼祥[1] 

机构地区：[1]湖南省水文水资源勘测局,湖南长沙410007

出　　处：《人民长江》2007年第8期160-161,共2页Yangtze River

摘　　要：湖南省洪涝灾害频繁,同时旱灾亦频繁发生。选定降水量距平率、蒸发与降水比、河道来水量距平百分率、水库蓄水距平百分率、农作物受旱面积所占国土面积百分比、连续无有效降水日数和土壤含水量等7项指标,依据湖南省1960～2003年的资料对湖南省的干旱程度进行评价与分析,针对7项指标,确定了湖南省干旱程度等级划分的定量性指标。湖南省旱情评价指标体系研究成果将为领导决策抗旱提供科学依据,使抗旱工作在深度和广度均跃上一个新的台阶。Flood-waterlogging and drought disasters occur frequently in Hunan province.Selecting 7 indexes of departure ratio of rainfall,evaporation and rainfall ratio,departure ratio of river runoff,departure ratio of reservoir impoundment,the percentage of drought farmland area in total land area,continuous unavailable rainfall days and soil water content,and based on the data from 1960 to 2003,the drought evaluation and analysis in Hunan province are carried out.The quantitative indexes for drought classification of Hunan province are determined in the light of 7 indexes.The research achievement for drought evaluation index system will provide scientific base for decision-making against drought and improve drought fighting work.

关 键 词：旱情评价 指标体系 成因分析 实时判别 湖南 

分 类 号：S423[农业科学—植物保护]