摘要
关于沙漠化成因,存在主要由于人类不合理的经济活动所造成和地球自然营力为主因两种认识。本文分析认为气候的恶化、生物退化、天然降水和地下水的缺乏是导致沙漠化主要因素,而导致上述自然条件的恶化主要制导因素是地球排气作用、区域低大地热流、地壳运动和油气的微渗漏。
About the cause mechanism of desertiflcation, there are two different of theories at present time. One is about the unreasonable economic activities, the other is the natural agent of the earth. This paper considers that deterioration of climate, degradation of creature, precipitation and the shortage of groundwater.are the main reason of the mechanism of desertification. What leads to these deterioration of natural condition mentioned about？ The main control factors are the earth out-gassing, the low terrestrial heat flowing, earth crust movement and the micro-leakage of oil and gas.
出处
《地质灾害与环境保护》
2006年第1期9-12,73,共5页
Journal of Geological Hazards and Environment Preservation
关键词
沙漠化
成因
自然因素
desertification
cause
natural factors
