宁夏盐池沙区生态经济型防护林体系林种树种优化比例研究

Study on Forest Type/Tree Species Structure Optimization of Yanchi Sandy Area Eco-economical Shelterbelt System in Ningxia

摘要: 运用层次分析方法对盐池沙区林业建设的现状进行了分析,建立了盐池县生态经济型防护林体系的优化模型,提出了盐池县风沙区生态经济型防护林体系林种、树种的最优比例。林地面积由原来的6.894万hm2增加到10.905万hm2,固沙林、饲料林、草原防护林、农田防护林、经济林、薪炭林、特用林分别占25.68%、20.39%、14.09%、12.09%、10.59%、8.78%、8.39%。

Abstract: Structure analysis was used to analyze the present situation of forestry construction of Yanchi sandy area in Ningxia.The optimized model for the eco ecological shelterbelt system in Yanchi was established and the optimal pattern of forest type,tree species in the sandy area of Yanchi county was put forward.The area of forestland increased from 68.94 thousand ha to 109.05 thousand ha,in which the areas of farmland shelterbelt,economic forest,fuelwood forest and the forest for special use account for 25.68%,20.39%,14.09%,12.09%,10.59%,8.78% and 8.39%respectively.