摘要
利用河南省1950—2009年的干旱灾情资料,分析了干旱灾害的变化特征及成因。结果表明,河南省农业干旱灾害呈现明显的周期性波动,干旱灾情轻重交替出现,受灾面积的波动周期为4～l4年,成灾面积的波动周期为4～17年;干旱受灾面积呈减小趋势但成灾面积呈增大趋势;河南省的资源环境、气候变化和社会经济条件均对干旱灾害的形成有一定的影响。
Based on drought statistical data during 1950-2009 in Henan province, the change characteristics and its cause of drought were analyzed. The results showed that the disaster taked place almost every year and light and heavy agricuhural droughts appeared alternatively in a cycle, the cycle period of affected areas was approximately 4-14 years, the cycle period of suffering areas was roughly 4-17 years; The drought affected areas exhibited a decreasing trend while the suffering areas exhibited an increasing trend; The resources and enviromnent, climate change and socioeconomic conditions of Henan province had some impact on the formation of drought.
出处
《湖北农业科学》
北大核心
2012年第6期1107-1111,共5页
Hubei Agricultural Sciences
基金
商丘师范学院青年科研基金项目(2011QN20)
河南省2011年软科学计划项目(112400450426)
国家自然科学基金项目(41140019)
关键词
干旱灾害
特征
成因
河南省
drought
characteristics
causes
Henan province
