遥感和GIS支持下县域退耕还林还草空间决策分析——以呼和浩特市武川县为例

Spatial Decision Analysis on the County's Reducing Cultivated Land to Plant Forest and Grass Under the Support of RS and GIS -Given the example of Wuchuang county

退耕还林还草是当前生态环境建设和保护的重要途径 ,在遥感和GIS技术支持下将武川县的土壤类型数据与地形坡度数据叠加分析同时参考土壤侵蚀、降水量和温度等方面的资料 ,进行土地适宜性评价 ,对TM影像目视解译得到土地利用现状数据 ,并与土地适宜性数据进行叠加分析 ,确定退耕还林还草地的数量及其空间分布。可为决策部门提供决策依据。此研究方法和技术路线作为一种技术模式 ,可进行推广 ,对西部大开发中退耕还林还草工程项目的顺利进行有重要意义[1 ] 。

Reducing cultivated land to plant forest and grass is the important way for the ecological environment construction and protection. Based on RS and GIS, overlaid the soil type data with slope data, erosion data, rainfall data and temperature data to evaluate the land suitableness; overlaid the current land use data acquired from deciphering the TM photography with land suitableness data to confirm the quantity and spatial distribution of reducing cultivated land to plant forest and grass, which offer the decisive data for decision-maker. The study method and technological way can be widened as a model. It has a important significance for the successful process of reducing cultivated land to forest and grass project in the west development.