二十世纪九十年代我国土地利用变化时空特征及其成因分析

Study on the Spatial-Temporal Dynamic Change of Land-use Change and Diving Forces Analyses in1990s

构建了中国20世纪90年代土地利用变化时空信息平台,发展并实现了利用遥感技术建设时间-空间土地利用数据库的技术方法,建立了20世纪80年代后期、90年代中期和90年代末期覆盖全国的遥感卫星影像库和土地利用空间数据库。依据全国土地利用遥感时空数据对我国20世纪80年代后期到90年代末期的土地利用变化过程进行了全面分析,揭示了我国10年来土地利用变化的时空规律,分析了这些规律形成的主要政策、经济和自然成因,并针对性地提出了土地利用规划与监测方面的建议。

Supported by the projects of knowledge innovation program of CAS,authors have set up a spatial-temporal information platform by the integration of the corresponding scientific and research achievement during the periods of the 8th and 9th Five-Year Plan,which comprehensively reflected the characteristics of land-use change,designed a series of technique frameworks on the spatial-temporal database construction based on remote sensing techniques,e.g.,the construction of remotely sensed database and land-use spatial database of the midterm of 1980s,the midterm of 1990s and the end of 1990s,which laid a foundation for the dynamic monitoring of land-use change and the corresponding studies.In this paper,authors have analyzed comprehensively the characteristics of land-use change in 1990s,revealed the spatial-temporal change of land use supported by the remote sensing and GIS technologies as well as analyzed the geophysical and socio-economic driving factors.The conclusions and proposals brought forward by the author:the spatial regional difference of the modern land use change in China must be fully considered during the land use planning.At the same time,the pertinence of physical geographical zones must be considered during the planning of eco-environment construction.And,based on the increasingly maturity of the infrastructure,the traditional thoughts on planning and management of resource must be shifted so as to fully realize the optimized allocation of land resources at regional scale.