江西南康市地形破碎区土地整理规划设计--以凤岗镇土地整理项目为例

Planning and Designing of Land Consolidation Project in Cracked-Terrain Area based on GIS Technology:A Case Study in Fenggang Town,Nankang City,Jiangxi Province

本文在分析地形破碎区土地整理规划设计流程与方法的基础上,借助GIS技术,将地形图中等高线进行栅格化处理,后利用ArcGIS软件对数据进行Natural Neighbor插值处理,建立不规则三角网,同时对高程点文件进行操作,生成三维地形模型,对项目区地形进行模拟,并分别从开发整理适宜性评价、项目规划择优以及项目工程设计三方面进行了实证研究。研究证明,应用GIS技术构建地形破碎区三维地形模型,可为进行该类项目适宜性评价、规划方案择优、工程设计等工程内容提供客观依据,同时可以克服项目设计中传统方法存在的不足。

Land reclamation and consolidation plays an important role in keeping dynamic balance of cultivated land conservation, while cracked-terrain land consolidation is one of its important parts. The characters of cracked-terrain land in terms of land shape, surface fluctuation, soil classification, and soil fertility make it much more complicated to plan and design the project of land reclamation and consolidation. The cracked land has great potentials to be developed because most these lands are unused and with large areas. The author analyzed the principle and method of the planning and designing of land consolidation project under aid of by GIS technology and made grid treatment on the contour lines and reference point of the topographic map at scale of 1 to 5 000. The grid cell is 5m × 5m. Through ArcGIS software, the data was treated to get the image of the project region and 3D terrain model was established by based on digital contours for modeling the terrain of the project area. Land consolidation suitability evaluation, project plan and selection, and engineering design were discussed with assistance of Geographic information system （GIS）. The study proved that the 3D terrain model could provide important foundation for the suitability evaluation, project plan and selection, and engineering design.