基于GIS的延安市城郊区土地利用格局优化研究

以延安市宝塔区高坡到三十里铺段为例,以DEM为基础提取坡度、坡向及地形起伏度因子,再结合土地利用空间布局、植被多样性、地表水体、生态价值等生态因子,在ArcGIS空间分析模块下,通过叠加分析进行研究区土地生态敏感性与适宜性评价.参照评价结果,借鉴景观格局整体优化的方法,将研究区分为优先发展区、引导发展区、限制发展区和禁...

Study on the optimization of landuse pattern in the suburb of Yan'an city based on GIS

Taking the suburb from Gaopo to Sanshilipu of Yan''an as a case, slope, aspect and relief were extracted from DEM, then combining with landuse pattern, vegetation diversity, surface water, ecological value and other eco-factors, ecological sensitivity and suitability were evaluated by using spatial overlay of spatial analysis in GIS. According to the results, referring to the method of landscape pattern optimization, the study area was devided into four parts including prior development zone, guided development zone, limited development zone, and prohibited development zone. Then the study decided the scale and scope of the development and the construction in accordance with the degree of construction suitability in different zones, thus provided theoretical basis for the optimization and regulation of land use pattern in hilly gully area. The results tell us that prohibited development zone is 10.98 km², accounting for 53.80% of the whole study area, so the study area should give priority to ecological protection, and based on which, some appropriate development activities can be carried out.