区域土地利用强度内涵及其应用--以河北省曲周县为例

研究目的:确定区域土地利用强度新的内涵并对其进行实证研究.研究方法:文献资料综合法、因子分析法、地理信息系统(GIS).研究结果:土地利用由数量利用和质量利用组成,不同影响因子限定条件构成土地利用强度各维度的发展空间;土地利用强度的表征函数可由二维拓展到多维,其值是土地利用过程中各影响因子共同作用的结果.以河北省曲周县为实证点,依据因子分析结果,分析县域种植业土地利用强度,并用GIS进行空间表达.研究结论:(1)以曲周镇为中心,土地利用强度由里向外逐渐降低;(2)县域中部土地利用强度高于南、北部;(3)县域土地利用强度格局是农户种植业微观土地利用行为累积的结果,其中农产品价格与耕地立地条件是县域种植业土地利用强度格局主要驱动因素.

Connotation and Its Application of Regional Land Use Intensity-A Case Study of Quzhou County in Hebei Province

The purpose of this study is to re-define the connotation of land u se intensity by a case study. Integrated methods of documentation,factor analys is,and geographic information system were employed. The results indicate that l and use intensity can be studied in terms of its quantity and its quality. The v alue of land use intensity must be beyond the extent of minimal limited conditio ns. And its function can be expanded from two-dimensions to multi-dimensions. The value is the output of all interactive factors in the course of land use. Ta king Quzhou County as the study area,the land use intensity of farming system w as calculated and illustrated using GIS technique on the basis of factors analys is. Three conclusions are deduced. Firstly,the land use intensity is gradually decreasing outward from the centre zone of the county,Quzhou town. Secondly,th e land use intensity of central part of the county is higher than the southern a nd northern part. Thirdly,the distribution pattern of land use intensity at cou nty level is the accumulated result of microscopic land use behaviors conducted by the farmers. The price of agricultural products and the site conditions of cu ltivated land are the most important driving factors of land use intensity of cr op production at county level.