毛乌素沙地库伦生态经济圈可持续性评价

毛乌素沙地库伦生态经济圈最显著的特征是以户为单元，由点到面形成毛乌素沙地库伦生态经济圈集群模式。为探索其可持续性，依据库伦生态经济圈聚类特征进行分类，再对不同类型的库伦生态经济圈可持续性进行综合评价研究。结果表明：毛乌素沙地库伦生态经济圈存在林果种植加工模式、种养加链条模式、小规模种养模式、懒散经营模式；可持续性综合评价得分值最高的是种养加链条模式（81.6106），其次为林果种植加工模式（63.8506），较差的是小规模种养模式（46.5691）和懒散经营模式（24.8808），且后两种模式普遍存在于毛乌素沙地，说明毛乌素沙地上库伦生态系统整体可持续水平较低，需以现有的资源为基础，改善经营技术手段和决策方式，优化库伦生态经济圈运营模式，提高生态生产效率，增强系统物质循环与能量转化功能，使各种库伦生态经济圈朝着永续利用方向发展，进而整体推进毛乌素沙地的可持续性。

Evaluation on development sustainability of kulun eco-economic circle in the Mu Us Sandy Land

The most remarkable feature of kulun eco-economic circle in Mu Us Sandy Land is that it takes households as units. Forming the cluster model of kulun eco-economic circle in Mu Us Sandy Land from point to surface. In order to explore its sustainability， it is classified according to the clustering characteristics of Coulomb eco-economic circle， and then the sustainability of different types of Coulomb eco-economic circle is comprehensively evaluated. The results show that there are forest and fruit planting and processing mode， planting and breeding plus chain mode， small-scale planting and breeding mode and lazy management mode in kulun eco-economic circle in Mu Us Sandy Land. The highest comprehensive score of the comprehensive evaluation of sustainability is the planting and breeding plus chain mode （81.6106）， followed by the forest and fruit planting and processing mode （63.8506）， and the worse are the small-scale planting and breeding mode （46.5691） and lazy management mode （24.8808）. The latter two models generally exist in Mu Us Sandy Land， indicating that the overall sustainable level of kulun ecosystem is low. Based on the existing resources， it is necessary to improve the management technical means and decision-making methods， optimize the operation mode of kulun eco-economic circle， improve the ecological production efficiency， and enhance the material circulation and energy transformation function of the system， so as to make all kinds of kulun eco-economic circles develop in the direction of sustainable utilization and promote the sustainability of Mu Us Sandy Land as a whole.