基于PSR模型的城乡交错带土地集约利用评价研究——以南京市栖霞区为例

INTENSIVE LAND USE ASSESSMENT IN RURAL-URBAN ECOTONE BASED ON PSR MODEL——A CASE STUDY OF QIXIA DISTRICT IN NANJING CITY

研究背景:在当今城市快速扩张的背景下,土地集约利用问题成为土地科学的核心问题之一。而城乡交错带这一特殊的城市扩张边缘地区的土地集约利用研究目前相对较少。研究目的:通过典型研究区域南京市栖霞区的土地集约利用评价分析,探讨城乡交错带土地集约利用评价的特点和方法。研究方法:模型法、主成分分析法、文献法。研究结果:9a内栖霞区土地集约利用状况整体呈稳步上升趋势,且上升幅度较大,但受到产业发展模式制约,综合集约利用水平仍不高。研究结论:城乡交错带这一特殊地区土地集约利用状况具有不同于城镇与乡村的特点。引入PSR模型进行城乡交错带土地集约利用评价的方法是可行的,在研究区的评价实践中是成功的,评价结果能较好的反映研究区土地集约利用状况及其演变,也能较好的表现出研究区各子系统之间相互作用的关系。

The background of this paper is that the question of intensive land use becomes one of the most significant questions now,but research in rural-urban ecotone is still little.The purpose of this paper is to analyze the intensive land use of typical area of Qixia,and explore the characteristics and methods of intensive land use assessment in rural-urban ecotone.Methods of model,principal component analysis,literature are used in this study.The results revealed that the situation of intensive land use in Qixia district showed a steady upward trend as a whole,and the rise was considerable high during 9 years.However,with the limitation of industrial developing model,the level of land intensive use was still low.The conclusion disclosed that intensive land use in rural-urban ecotone had its feature different from the ones in rural or urban,the method of PSR model for intensive land use assessment in rural-urban ecotone was feasible,and the practice in the study area was successful.The results could well reflect the intensive land use situation and its evolution,and well show the relationship of the interaction between each subsystems of the study area.