60年来中国农业干旱时空演替规律研究

Researches on Spatial and Temporal Succession Law of Agricultural Drought in the Past 60 Years in China

在全球气候变暖的大背景下我国农业干旱发生越来越频繁,总结我国农业干旱发生的时空演替规律对于指导我国农业抗灾减灾工作具有重要的现实意义.本文以我国近60年来农业干旱受灾、成灾、绝收面积的统计数据为基础,对我国农业干旱的基本情况进行了分析.分析表明:近60年来我国干旱的发生整体呈上升趋势;6大耕作区中东北、黄淮海、长江中下游地区受旱面积占全国干旱受旱面积的69%,为全国的重旱区.全国各省份对干旱的承受能力与各地区经济发展之间有一定关系.

In the background of global warming,agricultural drought has become more and more frequent in our country.To summarize the spatial and temporal succession Law of agricultural drought has important practical significance in guiding disaster mitigation work.The thesis analyzed the basic situation of China＇s agricultural drought on the basis of the statistics of drought-induced areas,drought-occurred areas,and no harvest areas in nearly 60 years.The analyses showed that the trend of drought occurrence in nearly 60 years was overall upward.In six large farming areas,drought areas of northeast region of China,the Huang-Huai-Hai region and the middle and lower reaches of the Yangtze River accounted for 69% of national drought areas,they were serious drought areas in China.Drought tolerance of all provinces has certain relationship with the regional economic development.