宁夏盐池县土地生产潜力评价研究

为了更好的解决荒漠化地区土地利用存在的问题，确定合理的土地利用规划，该文以位于半干旱区农牧交错区的宁夏盐池县为例，探讨该区土地潜力，建立了半干旱区农牧交错区土地潜力评价系统和指标体系，并筛选出评价主导因子，依据区域内的土地利用现状，将该区域分为137个地块，在地理信息系统下建立其属性数据库，结合有关专家判断，根据权重法对每一地块的土地潜力等级进行了评价。盐池县是宁夏沙化土地面积最大，风沙危害最严重的地区，沙化土地面积达53．6万hm^2，占全县土地面积的75．14％。

Studies on Land Potential Evaluation in Yanchi County of Ningxia

For preferably solving existing problems of land utilization and establishing reasonable land utilization planning in desertification area, taking Yanchi County of Ningxia Hui Autonomous Region in the semi-arid crop-grazing crisscross area as example, talking land potential of the area, the system of land potential evaluation and index are established, and the main factors are abstracted. According to the status of land utilization, the area is divided into 137 plots, and attribute database of these plots is built through GIS. Then by using method of weighting, the potential of each plot is evaluated. Yanchi County is the largest area of land desertification in Ningxia Hui Autonomous Region, area of land desertification is 536000 hm^2, 75.14% of total land area.