辽宁省粮食生产中旱灾发生特征分析

赵先丽; 张玉书; 纪瑞鹏; 李丽光; 冯锐; 蔡福

Characteristics of drought on grain production in Liaoning Province

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DOI：10.7606/j.issn.1000-7601.2011.03.46

Key Words: drought grain production Liaoning Province

Author Name	Affiliation
ZHAO Xianli	Institute of Atmospheric Envirorment ，China Meteorological Administration, Shenyang， Liaoning 110016， China
ZHANG Yushu	Institute of Atmospheric Envirorment ，China Meteorological Administration, Shenyang， Liaoning 110016， China
JI Ruipeng	Institute of Atmospheric Envirorment ，China Meteorological Administration, Shenyang， Liaoning 110016， China
LI Liguang	Institute of Atmospheric Envirorment ，China Meteorological Administration, Shenyang， Liaoning 110016， China
FENG Rui	Institute of Atmospheric Envirorment ，China Meteorological Administration, Shenyang， Liaoning 110016， China
CAI Fu	Institute of Atmospheric Envirorment ，China Meteorological Administration, Shenyang， Liaoning 110016， China

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Abstract:

Based on the statistical data of drought and grain production from 1949~ 2007 in Liaoning Province，the characteristics of drought and its effect on grain production were analyzed in order to provide references for drought reduc-tion and prevention. The results show that drought is of fluctuation and getting more and more serious from 1949~ 2007 in Liaoning. The frequency of drought is the highest during 2000~ 2007, then in the early 1970s and the last 1980s. Grain yield reduction takes an obvious increasing trend since 1981. Disaster induced intensity of drought on grain produc-tion becomes more and more obvious in terms of drought intensity index. Drought is an important factor influencing grain production in the province. Furthermore，the region affected by drought is being enlarged year after year, and drought in-tensity is increasing obviously.