基于GIS的青岛市山丘区退耕还林还草决策方案分析

Analysis of Decision-making Scheme on Cultivated Land in Qingdao Returned to Forestland and Grassland Based on GIS

通过对 TM遥感影像的目视解译获得最新的青岛市土地利用数据 ,然后从土地利用数据中提取出旱地数据 ;利用 GIS的图层叠加功能 ,分析不同坡度、不同土壤侵蚀强度和不同土壤侵蚀危险度条件下的旱地面积及分布 ;结合具体情况 ,制定退耕还林还草的条件 ,最后提出青岛市退耕还林还草综合决策方案。

By using RS and GIS technology,the author discussed the area and distribution of cultivated land returned to forest land and grassland in Qingdao.The studying method may be included as follows.First,the author get the land use data by visual interpretation of TM images,and extracted the cultivated land from the data.Second,using the overlaying function of Geographic Information System,the author analyzed the area and distribution of cultivated land under the condition of different slope,different soil erosion intensity and different soil erosion potential danger.Third,based upon specific condition of this region,the principles of returning cultivated land to forestland and grassland was set up.Based on these principles,the author gave the advice of cultivated land in Qingdao returned to forestland and grassland.