摘要
引入相对湿润度指数的概念,以20世纪70年代以来气象观测资料为基础,定义M≤-0.40为气象干旱发生的标准,分析了近39年来盘锦地区作物生长季各月的相对湿润度指数的变化趋势和气象干旱发生的频次等特征,并进一步探究了造成该趋势的原因,旨在为当地农业抗旱提供参考。
The concept of the relative moisture index was introduced on the basis of meteorological observation data which observed since the 1970s, defining M≤ -0.40 as the standard of meteorological drought. The changing trend of relative moisture index and meteorological drought characteristics of crop growing season each month were analyzed in recently 39 years, and researching the reasons for these trends deeper which provided a reference for fighting the local agrieuhural drought.
出处
《安徽农业科学》
CAS
北大核心
2010年第1期231-233,共3页
Journal of Anhui Agricultural Sciences
关键词
气象干旱
相对湿润度指数
干旱指数
Meteorological drought
Relative moisture index
Drought index
