摘要
根据东北地区1949—2017年的播种、受旱、成灾和绝收面积、因旱人饮困难、粮食因旱损失等统计数据,分析了黑龙江省、吉林省和辽宁省旱灾时空变化特征。结果表明:东北地区干旱灾害发生频率越来越高,而且干旱持续的时间由过去的以短时段为主,发展成为春夏连旱、夏秋连旱;近70a以来,受旱面积和成灾比例较高的几次严重干旱事件都发生在2000年以后,以2000年和2007年最为典型;连年干旱造成的影响越来越深远,因旱人饮困难数、粮食因旱损失量和农业直接经济损失在2000年和2007年达到最高。
Based on the statistical data of crop sowing, drought, disaster and failure area, population lacking drinking water, and grain loss due to drought in Northeast China from 1949 to 2017, the temporal and spatial characteristics of drought in Heilongjiang, Jilin and Liaoning provinces were analysed. The results show that the frequency of drought disaster is higher and higher in Northeast China, and the duration of drought has developed from short-term to continuous drought in spring, summer and autumn. In the past 70 years, several serious drought events with higher drought area and disaster ratio have occurred after 2000, most typical in 2000 and 2007. The impact of continuous drought is getting deeper and deeper. In 2000 and 2007, the number of people suffering from drinking difficulties due to drought, the amount of food loss due to drought and the direct economic loss of agriculture reached the highest.
作者
李蓉
辛景峰
杨永民
LI Rong;XIN Jingfeng;YANG Yongmin(China Institute of Water Resources and Hydropower Research,Beijing 100038,China;Research Center on Flood&Drought Disaster Reduction of the Ministry of Water Resources,Beijing 100038,China)
出处
《水利水电技术》
北大核心
2019年第S02期1-6,共6页
Water Resources and Hydropower Engineering
基金
国家重点研发计划(2017YFC1502406).
关键词
东北地区
农业干旱
因旱人饮困难
粮食因旱损失
Northeast China
agriculture drought
population lacking drinking water
grain loss
作者简介
李蓉(1979—),女,高级工程师,硕士,主要从事水利信息化研究。E-mail:lir@iwhr.com
