浑善达克沙地现代土地沙漠化发展动态与成因分析

Development and Reasons of Sandy Desertification in Otindag Sandy Land During The Modern Period

为探讨浑善达克沙地近40年来土地沙漠化发展动态与成因,根据最新的遥感数据,从植被覆盖度变化的角度,分析浑善达克沙地近20年来土地沙漠化发展特点,并根据若干气象站点的气象资料和研究区社会统计资料,分析影响浑善达克沙地现代土地沙漠化发展的自然和人为因素。认为近几十年来,该区气候出现暖湿化——增湿增温趋势,有利于沙漠化过程的逆发展,而人类不合理的经济活动,是导致浑善达克沙地土地沙漠化恶性发展的主要因素。

In order to probe into development and reasons of sandy desertification in Otindag Sandy Land in recent 40 years, development characteristics of sandy desertification of this area in recent 20 years were analyzed from the view point of vegetation cover rate changing based on the newest remote sensing data. Then natural and human factors affecting sandy desertification were analyzed according to the meteorological documentary data from a lot of meteorological observation and the social statistic data of studied area. It was showed that the climate of this area took on the trend of warming and moistening, which was beneficial to the converse development of desertification and that the irrational economic activities of human were the primary factor leading to sandy desertification during the last several decades.