利用中国气候信息系统研究年降水量空间分布规律  

Spatial pattern analysis of annual precipitation with Climate Information System of China

作　　者：尚宗波[1] 高琼[2] 杨奠安[1] 

机构地区：[1]中国科学院植物研究所植被数量生态学开放研究实验室,北京100093 [2]北京师范大学资源科学研究所,北京100875

出　　处：《生态学报》2001年第5期689-694,共6页Acta Ecologica Sinica

基　　金：国家自然科学重大基金!( No.39899370 );国家自然科学基金!( No.39770 1 33);国家自然科学基金杰出青年基金!( No.3972 50 0 6)

摘　　要：利用中国气候信息系统 ,做出了中国年平均降水量分布图 ,以描述中国水分状况。首先利用大比例尺地形图和数字化后的地形资料 ,建立中国数字高程模型 ;根据全国气候资料建立趋势面分析模型 ,模拟出全国降水量空间分布的趋势值 ,利用空间插值方法对趋势面分析产生的剩余值进行空间插值 ,估算出降水量的空间分布资料 ,并对其进行 2次平滑处理后建立中国降水量空间分布数据库 ;利用生态信息系统完成了图形输出和编辑处理 ,最后输出中国多年平均年降水量分布图。该方法具有快速、准确、理论性强、结果可靠、实用性强等特点 ,既可以作为生态学模型的资料 。With Climate Information System of China, the distribution map of mean annual precipitation was drawn to describe the spatial distribution of China water condition First, large scale relief maps and topography data were used to build the Digital Elevation Models of China Then climatic data were used to build Trend Surface Models, and to simulate the spatial distribution trend of China precipitation pattern Interpolation method was used to interpolate the surplus calculated by Trend Surface Analysis The simulated data were “smoothed” twice in order to build the spatial distribution database of China annual precipitation Ecology Information System was used to plot and edit the graph, to confine the boundary, and to generate the distribution map Speediness, nicety, reliable theory, credibility, and practicality were characterized by this method, and the simulated results can be verified too The simulated raster climatic data can be used for ecological modelling, or for high precision distribution map

关 键 词：降水量 空间分布图 趋势面分析 空间插值 中国 气候信息系统 生态信息系统 

分 类 号：P426.6[天文地球—大气科学及气象学]