1990年代我国新增非农建设用地的空间分异特征

THE SPATIAL DIFFERENTIATION OF NEW NON-AGRICULTURAL CONSTRUCTION LAND OF CHINA IN THE 1990S

土地利用 土地覆被变化是全球变化研究中的核心领域之一。文章利用中国资源环境数据库,在RS和GIS技术的支持下,对1990年代我国土地非农化建设进行了研究。结果表明,随着人口增长以及经济的快速发展,我国用于非农用途的土地增长迅速,10年间新增17,627.57km2,主要分布在我国东部和南方人口密集、经济发达的地区,内陆地区相对较少。而且,新增非农建设用地占用的绝大部分为珍贵的耕地资源,比例高达85%以上,其余依次为林地、草地、未利用地和水域。文章还分省区对非农建设用地的增长及占用其它类型土地的情况进行了详细的分析,为相关部门制定针对性政策保护耕地林地、遏制无序土地非农建设提供了有力的支持。最后还对非农建设用地增长与经济发展和人口增长的关系作了初步研究。

During the last two decades, the land use and land cover in China changed enormously. Based on Chinese Resources and Environment Database, this paper studied the spatial differentiation of new non-agricultural construction land of China in the 1990s. The results showed that the non-agricultural construction land increased about 17,627.57km^2, mainly located in the eastern and southeast China, at the cost of precise arable land resources with the percentage of 85.49%. Besides, this paper also analyzed the provincial differentiations of non-agricultural construction land during the 1990s. The correlation analysis of new non-agricultural construction land and some social-economical indicators identified that the infrastructure construction investment had the biggest influence on the increase of non-agricultural construction land.