基于时间可达性的土地整治道路布局研究

科学合理布局土地整治项目中的道路,能有效提高农户田间耕作出行便捷性和提升土地整治项目的满意度。以江西省樟树市阁山镇为研究区域,通过调研及数据收集,获取农户田间耕作出行方式数据,地形、地貌和土地利用现状数据,野外采样、室内化验得到耕地样点养分数据。借助Arc GIS 10.2软件平台,处理得到研究区时间可达性分布图;选取土地覆盖、地形、现状道路和耕地质量等4方面影响因素和8个影响因子,建立土地整治田间道路布局适宜性评价指标体系,生成土地整治田间道路布局适宜性分布图;最终形成土地整治田间道路布局优化方案。研究结果表明:基于农户田间耕作出行方式的调研数据得到的项目区可达性分布情况为土地整治田间道路布局优化方案提供了重要依据;GIS技术提高了土地整治道路布局优化方案的空间准确性;道路布局优化方案既方便了农户出行,又注重对耕地质量的保护。

Study on the Road Layout Optimization in Land Consolidation Based on Temporal Accessibility

Scientific and reasonable road layout in the process of land consolidation could improve the travel convenience of the farmlands and raise farmers’ satisfaction with the land consolidation project. In this paper, road layout optimization during a land consolidation project was studied. The study area was in Geshan Town, Zhangshu city, Jiangxi Province. Data of the farmers’ traveling preferences were collected through investigation. The local land resource bureau provided the digital maps of topography and land uses. Twenty-seven soil samples were collected and the contents of the soil samples were tested in the lab. The ArcGIS 10.2 software was used to process the data and produce the temporal accessibility layout of the research area. Eight factors were selected from four aspects: the land use condition, the topography condition, the existing roads and the farmland quality. The FAHP method was used to judge the factors’ weights. The suitability evaluation system of the road layout in the land consolidation project was established and the suitability map of road layout was generated. Finally the road layout optimization scheme in the land consolation project was formed. The results showed that the temporal accessibility based on the investigation on farmer’s traveling preferences was vital to the optimization scheme of the road layout. The GIS technology improved the spatial accuracy for the road layout optimization. The optimization scheme could not only provide convenience to the travels of framers, but also protect the quality of the farmland.