基于地质背景的川东北中低山丘陵区县级土地利用分区研究——以四川省南江县为例

County land-use zoning based on geological background of low-mountain hills in northeast Sichuan——Taking Nanjiang County,Sichuan Province for example

以四川省南江县为例,根据地质条件,选取了地质背景条件指标、土地利用结构指标、社会经济指标三方面指标共17个评价指标,运用聚类分析方法将南江县划分为南部白垩系、侏罗系倾斜式单面低山和侵蚀台坎状窄谷低山紫色土种植业养殖业区,中部侏罗系、三叠系单面低山、中山紫色土黄壤以林地为主的多经济区,以及北部三叠系、震旦系、寒武系中山黄壤黄棕壤石灰岩土林牧区;并根据各区土地利用结构和社会经济状况,提出符合当地地质条件的土地利用模式和协调发展措施.

This article selects Nanjiang County in Sichuan Province as an example, according to the geological conditions of Nanjiang, selecting index in three aspects, geological background conditions, land use structure, society and economy, which including 17 evaluation indexes, using cluster analysis method, Nanjiang County is divided into southern cretaceous, Jurassic tilting single-side low mountain and erosion berm narrow valley low mountain purple soil planting farming area, central Jurassic, Triassic system single mountain, Zhongshan yellow purple soil-the forest-mainly-distributed economic zones and the northern three Triassic, Sinian, Cambrian, Zhongshan yellow and yellow-brown pastoral forest limestone area. And according to the regional land use structure and the social economic conditions, land use pattern and coordinated development measures are put forward in accordance with local geological conditions.