干旱研究的模糊论方法  

Method of Drought Analysis-Fuzzy Set

作　　者：孙荣强[1] 

机构地区：[1]水利部南京水文水资源研究所

出　　处：《干旱地区农业研究》1989年第2期61-68,共8页Agricultural Research in the Arid Areas

摘　　要：用模糊数学分析干旱,验证结果表明切实可行。本文拟用降水量、降水日数、最长无雨日数、蒸发量、气温、温度和风速七个因子分析干旱,具有方法简便,考虑因子多之特点。干旱是一个模糊的概念,因为实际中发生的干旱事件边界条件不清楚,采用精确数学难以恰当描述,但是,模糊数学是采用数学手段处理事物的模糊性的一种数学方法,所以,在分析干旱过程中就能显示其优越性。It is a new attempt to apply the method of Fuzzy Set to drought Analysis.The testing results indicate that the method is practical and feasible. Such seven factors as rainfall, days of rainfall, days of no rainfall, evaporation, temperatures, humidity and wind speed are adopted to analyse drought, which is simple and characterized with muh-factors. If the exact maths is used, it is difficult to find a standard and reasonable method to evaluate drought. Drought is a fuzzy concept,it is hard to describe it by the exact maths method, for the boundary conditions of the occurence of drought in reality are vagour. Nevertheless, the fuzzy Set is a kind of maths to deal with the fuzzy characteristics by means of maths so that it can show its advantages in the course of drought analysis.

关 键 词：干旱 多因子分析 模糊数学 

分 类 号：S162.42[农业科学—农业气象学]