关键词: 地统计学, GIS技术, 东北地区, 降水

Abstract: Based on methods of geo-statistics integrating GIS analyzing,a comparison was made between two 30-year climatic averages of precipitation element from 1971 to 2000 and 1961 to 1990 in 146 meteorological stations in Northeast China.With the comparison,we came to a conclusion that the difference of precipitation between two periods could not be truly demonstrated by traditional statistic method,on the contrary,could be showed objectively and truly by the geo-statistical integrating GIS analyzing method.The spatial maps on difference between two climatic data were built on GIS platform.It was concluded that the precipitation had increased in a range from 3% to 6% in Southwestern and Eastern Heilongjiang Province,Southeastern Jilin Province and Middle Liaoning Province,while it had decreased in the other regions of Northeast China in summer,with the biggest extent from 6% to 9% in Southern and Northwest Liaoning Province.The sum of annual precipitation had increased in the most of regions in Heilongjiang Province,Eastern Jilin Province and Middle Liaoning Province,and had decreased in the other regions of Northeast China,with the biggest extent from 6% to 9% in southern Liaoning Province.

Key words: Geo-statistics, Geo-statistics, GIS technique, Northeast China, Precipitation