万柏林区城乡结合部的耕地变化定量分析  

Cultivated land changes in urban area of Wanbailin District

作　　者：左玉强[1] 刘伟[2] 朱德举[2] 程锋[3] 马素华[1] 

机构地区：[1]中国土地勘测规划院,北京100029 [2]中国农业大学土地资源系,北京100094 [3]国土资源部土地整理中心,北京100035

出　　处：《农业工程学报》2004年第1期293-297,共5页Transactions of the Chinese Society of Agricultural Engineering

摘　　要：应用GIS技术与统计方法对1990～2001年太原市万柏林区城乡结合部的耕地变化进行了定量分析。结果表明:11年间全区耕地转为他用的面积占所有土地转用总和的52.04%。在8类土地利用类型中,耕地转用量最大,面积为766.38hm2;耕地动态度最高,为2.14%。城区外土地区位优势与建设用地比较利益较大,导致区域内耕地分布重心向城市中心外更远的方向移动,11年共移动了0.95km;8类土地利用类型中,耕地相对变化率在位于城乡结合部核心区的小井峪乡最高,达2.98。补充耕地时成片开发后备土地使耕地大图斑增多,近城区的零星耕地因建设占用使耕地小图斑减少,致使全区耕地破碎度由0.264减少到0.258,耕地分离度则由0.65上升到0.68,耕地重要度由53.23%下降到44.86%。The quantitative change of the cultivated land from 1990 to 2001 in the urban fringe of Wanbailin District, Taiyuan, Shanxi Province was studied, applying GIS techniques and statistical method. Results showed that 766.38 hm^2 of the cultivated land was converted within 11 years from 1990 to 2001, which was 52.04% of the total land changed. The dynamic degree of the cultivated land was 2.14%, which was the highest among those of the 8 land utilization types. The location effects and the comparatively higher economic benefits of land used for construction, result in the translocation of the distribution center of cultivated land, with a distance of (0.95) km from the urban fringe to the outer area. Among the 5 counties in the study region, Xiaojingyu County, located at the core area of urban fringe, the relative change rate of cultivated land was the highest with a value of 2.98. As the larger mapping units of cultivated land increased resulting from the reserved land development and the smaller units of cultivated land decreased by the construction occupation, the cultivated land fragmentation decreased from 0.264 to 0.258, cultivated land isolation increased from 0.65 to 0.68 and the cultivated land importance decreased from 53.23% to 44.86%.

关 键 词：城乡结合部 耕地 土地利用变化 耕地重心移动 

分 类 号：F301.24[经济管理—产业经济]