内蒙古自治区东部荒漠化成因分析

根据大量的野外实际资料，论述了内蒙古东部荒漠化的成因，指出气候条件是诱发荒漠化的主要自然因素。近50a来（1949-2000年），该地区降水量在波动中呈现减少的趋势，减幅平均达到（2％～5％）／10a，而温度总体上呈现出在波动中增高的趋势，因而造成其气候日趋干旱。同时，人口、牲畜的大量增加，严重超过了当地土地生态环境的承载能力，人类活动激发和加速了荒漠化的进程，成为荒漠化迅速发的主要原因。而区内的第四系松散堆积物则是荒漠化发生的物质基础。

Cause analysis of desertification in the eastern part of Inner Mongolia Autonomous Region

The cause of desertification in the eastern part of Inner Mongolia was discussed on the basis of a great number of the field's information in this paper.It is indicated that the climate condition is the main natural factors leading to desertification.In recent 50 years,the precipitation showed a fluctuating decrease of(2%~5%)/10a.In the meanwhile,the temperature in the area took on a rising trend totally.It had caused the climatic drought day by day in the area.However,in the half century,the population and the lives stock increased greatly and it had badly exceeded the bearing capacity of the ecology environment in the area.The human activity is the main factor in the desertification and the Quaternary System loosened deposit is the material basis of the desertification in the area.