塔克拉玛干地区干湿波动与全球温度变化关系探讨

DISCUSSION ON THE RELATIONS BETWEEN DRY-HUMID FLUCTUATIONS AND GLOBAL TEMPERATURE CHANGES IN TAKLIMAKAN AREA

塔克拉玛干地区随着青藏高原隆起形成大沙漠以来，一直处于干旱环境，但存在着相对干湿波动，与全球温度变化呈现的冷干－暖湿特征相一致。认为沙漠化事件主要是发生在气候变冷、变干背景下，加上人类活动共同影响所致。历史上古遗址的废弃大多发生在冷干期。

The taklimakan area has long been in a dry environment since the sand seahad formedfollowing the uplift of Qinghai-Tibetan Plateau. However,there existed dry-humid fluctuations,which are consistent with the global temperature variations. The desertification events mainly occurredin the dry-clod climatic conditions and suffered from impacts of human activities. Most of the historicsites in the area abandoned in the dry-cold periods.