全球变化中土壤信息系统的研究进展

RESEARCH PROGRESSES IN SOIL INFORMATION SYSTEM FOR GLOBAL CHANGE STUDIES

地理信息系统（ＧＩＳ）支持下的土壤信息系统（ＳＩＳ）在评价土地生产能力、土地退化的现状、速率和风险以及全球变化研究中具有重要意义。简述了国内外ＳＩＳ的研究进展，包括ＦＡＯ世界土壤图的出版和修正、数字化世界土壤资源数据库（ＳＤＢ）的建立、土壤—土地数字化数据库（ＳＯＴＥＲ）在全世界的进展、世界土壤排放清单（ＷＩＳＥ）的发展以及美国和我国的ＳＩＳ进展情况。在此基础上简介了土壤属性空间变异性的研究方法———地形分析和地质统计学，并指出地质统计学与ＧＩＳ的结合将是未来的发展趋势。

GIS based soil information system(SIS)is very important for assessment of the capacity of land production, the status, rates of soil degradation and global change studies. In this paper, the research progresses in SIS development in recent years are introduced, including FAO Soil Map of World(SMW)and its revised legends, World Soil Database(SDB), World Soil and Terrain Digital Database(SOTER),World Inventory of Soils Emission potentials(WISE)and the progresses in USA and China; then two methods such as terrain analysis and geostatistics that used widely to diagnose soil spatial variability in soil mapping are presented. From the trend of SIS, it is necessary to integrate spatial analysis with GIS.