摘要
将5-9月作为吉林省农作物的生长季,利用吉林省47个气象站1961-2001年实测月降水数据,采用滑动平均、累计距平、EOF、REOF、Man-Kendall趋势分析和R/S分析等方法,研究生长季降水的时间序列、空间分布以及趋势性、持续性特征。结果表明:41a中,吉林省生长季降水表现为减少趋势(0.969mm/a);从空间上看,生长季降水存在4个相关性大的次区域;全省大部地区的变化趋势都与过去相同,即未来生长季降水变化趋势仍为减少趋势。
Based on the precipitation data observed in 47 meteorological stations in 1961 -2001 from May to September which was defined as the crop growing season in Jilin Province, the characteristics of time series, temporal and spatial distribution, tendency and persistence of the precipitation during the crop growing ~＇eason in Jilin Province was analyzed by using Empirical Orthogonal Function （EOF） , Rotated Empirical Function （REOF） , Man - Kendall test and R/S method. The results showed that four parts were identified as highly related regions. The precipitation during crop growing season in jilin Province had decreased by 0. 969 mm per year. The change tendency of the precipitation during crop growing season was the same as the before in the most regions of Jilin Province.
出处
《中国农业气象》
CSCD
2007年第4期359-363,共5页
Chinese Journal of Agrometeorology
基金
中国科学院东北地理与农业生态研究所湿地生态与环境重点实验室基金项目(WELF-2004-B-001)
中国科学院"优秀博士学位论文
院长奖学金获得者科研启动专项资金"
