黄土高原生态分区探讨

生态分区是生态系统和自然资源合理管理及持续利用的基础，合理的生态分区可为生态环境建设和环境管理政策的制订提供科学依据。在综合分析黄土高原生态环境特点的基础上，阐明了本区的生态地位及存在的主要生态问题。综合考虑黄土高原自然生态特点及其所构成的空间组合的相似性和异质性，提出了黄土高原生态分区的原则、依据及指标系统。通过对气候、土壤、植被等生态系统要素和社会、经济因素进行聚类分析，将黄土高原划分为七个一级生态类型区，并讨论了各区建设生态屏障的区域布局、建设途径及任务。

The discussion on further study of ecological zoning on the loess plateau

The division of ecological region is the base for the management and continual development of natural resources. It provides construction of ecology and environment and making of environmental management policies with scientific basis. After synthetic analysis of ecological and environment features of the Loess Plateau, the ecological stage and main ecological problems of the area are cleared. According to its natural features, similarities and differences of internal structure, we got the principles, basis and inductors for sub region of the Loess Plateau through cluster analysis of climate parameters, soil parameters, cover parameters and other social and economic factors. Then seven first grade sub regions are got, also the missions and way of ecology construction and structure of eco-system for every sub-era are provided.