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当前位置: 首页 > 文章 > 锡林郭勒草原不同生态地理区降水周期变化特征的小波分析 水土保持通报 2010,30 (5) 46-49
Position: Home > Articles > Wavelet Analysis on Cycle Regularity of Precipitation in Different Eco-geographical Zones of Xilinguole Steppe Bulletin of Soil and Water Conservation 2010,30 (5) 46-49

锡林郭勒草原不同生态地理区降水周期变化特征的小波分析

作  者：
王海梅;李政海;阎军;乌兰
单  位：
内蒙古自治区气象科学研究所;大连民族学院生命科学学院;内蒙古自治区党委内蒙古自治区党委宣传部
关键词：
锡林郭勒草原;生态地理区;气候变化;小波分析;周期性
摘  要：
以锡林郭勒盟及其周边地区17个气象站点1960年以来的月降水量数据为基础,利用气象学与生态学的学科交叉知识,按气象站点所在地区生态地理区划分割,在Matlab等软件的支持下,用小波分析的方法,研究各生态地理区年降水量的周期性变化规律及各区之间的异同点。研究结果表明,在25～32a时间尺度上,4个区的降水均有较明显的周期信号,降水丰缺均交替出现,但交替年份存在区域差异;根据周期变化的特点可以推断,2007年以后的15a左右时间,锡林郭勒盟及其周边地区降水偏少,气候有进一步旱化的趋势。
译  名：
Wavelet Analysis on Cycle Regularity of Precipitation in Different Eco-geographical Zones of Xilinguole Steppe
作  者：
WANG Hai-mei1,2,LI Zheng-hai2,YAN Jun1,WU Lan1(1.Inner Mongolia Meteorological Institute,Hohhot,Inner Mongolia 010051,China;2.Life Science Department,Dalian Nationalities University,Dalian,Liaoning 116600,China)
关键词：
Xilinguole steppe;eco-geographical zone;climate change;wavelet analysis;cycle regularity
摘  要：
This study was based on the precipitation data since 1960 from 17 weather stations in Xilinguole League and related areas.The interdisciplinary knowledge between meteorology and ecology was used and eco-geographical regions were divided according to the meteorological stations.The cycle regularity of precipitation and the difference among the eco-geographical zones were discussed with the aid of wavelet analysis method and Matlab software.Results showed that there was obvious cyclical change of precipitation sequence in Xilinguole League at the inter-annual scale from 1960 to 2007.There was an obvious signal of 25~32 year cycle of annual precipitation in 4 eco-geographical zones,but the periods of lack and abundance precipitation were different among the zones.According to the cycle characteristics,we can infer that in the next 15 years after 2007,Xilinguole League and related areas are in a state of persistent drought.

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