摘要
本文利用531a的历史资料,以全国作为比较背景,通过对东北黑土区及其分区的连旱连涝分析、旱涝的区域相关性分析,以及旱涝趋势分析得出:东北黑土区与各分区的相关性都较好,黑龙江区与吉林区的相关性达到0.998。东北黑土区各世纪平均等级值在2.49～2.88之间波动,平均趋势是偏涝。东北黑土区和吉林区都在由湿润转向干旱,而黑龙江区和辽宁区则刚好相反,都在由干旱转向湿润。
In this paper, used nearly 531 years of history data, with the national as a comparison background, through the analysis of the continuous drought and flood in the black soil area of northeast China and its zoning, drought and flood area correlation analysis and trend analysis, the northeast black earth area and the correlation of each partition are better, the correlation between the flood index of Heilongjiang area and Jilin area is0. 998. Northeast black soil area at the century average grade value from 2.49 - 2.88, the average trend is partial to waterlogging. The northeast black soil area and Jilin area are from wet to drought, while the Heilongjiang district and Liaoning district is just the opposite, are turning from dry to wet.
关键词
东北黑土区
旱涝灾害
气候变化
black soil region of northeast
drought and waterlogging
climate change
