吐鲁番盆地绿洲环境区划研究

本文在分析吐鲁番盆地自然及社会经济环境的基础上，依据绿洲环境的独特性，用ＧＩＳ方法对吐鲁番绿洲地区进行了环境区划，并从这一典型研究中，对绿洲环境区划的有关问题进行了探讨。

ENVIRONMENTAL REGIONALIZATION OF THE OASES IN TURPAN BASIN, XINJIANG, CHINA

Turpan Basin is the second largest intermontane basin in the Tianshan Mts. Oases are the major environmental systems which are closely related to the human activities in the basin. In order to understand comprehensively the similarities and differences among the oases, an environmental regionalization was conducted. A GIS software, ILWIS (integrated land and water information sysytem), was employed for the study. 3 first grade regions, 6 second grade regions and 18 third grade regions were divided according to the 9natural and social-economic environmental elements. Finally the environmental quality for each of the regions was evaluated and ordered. The result shows that the values of the environmental quality are strongly affected by the population density of the region. The denser the population is, the smaller the environmental value is in a region. The oasis cities with the most population density are the regions with the smallest environmental quality value, the farms in the oases get the highest value and the countries around the cities have the medium value.