关键词: 宁夏中部风沙区, 沙质荒漠化, 人类活动, 经济分析

Abstract:

There is an obvious developing tendency of sandy desertification in the blowing sand region of middle Ningxia in historical time, especially since 1950's. Human activities have promoted the development of desertification in the region through over cultivating, over grazing, over exploitation and denudation, and construction of manufactures and mines. Analysis on the economic structure, essential productive factors and economic activities in the studied area proved that the backward economic structure and inferior productive factor are not only the results of passively acclimatizing the geographical environment, but also the reasons that lead to the irrational economic activities and the sacrifice of geographical environment in order to survive and develop. Finally, the paper suggests that it must pay great attention to standard human activity through transforming present economic structure and productive factor and using economic means in preventing and harnessing desertification.

Key words: the blowing sand region in middle Ningxia, sandy desertification, human activity, economic analysis