晚更新世以来青海北部的人类活动与湖泊演变

Human Activities and Lake Evolution in North Qinghai since Late Pleistocene

中文关键词:  晚更新世 青海 人类活动 湖泊演变 生态环境 气候环境 古人类

英文关键词:North Qinghai,Human activity,Climatic environment,Lake evolution

中文摘要:

      作为高海拔生态环境的青海北部是青藏高原的重要组成部分。晚更新世晚期以来，青海北部气候环境一直处于冷暖、干湿波动过程之中，湖泊水域也发生了相应的扩张和收缩，成为高原人类迁移和发展的自然背景。约30kaB．P.，在晚期智人出现和迁徒的关键时期，青海北部开始有了最早的人类活动；更新世末一全新世初，气候转暖，古人类再次来到青海北部；进入全新世中期，气候暖湿，湖水位回升，细石器技术变得十分普通，青海北部的人类活动渐趋频繁。

英文摘要:

      With many lakes,such as Qinghai Lake and others in Qaidam basin,North Qinghai Province is one of the important parts of Qinghai-Tibet Plateau Based on agriculture and animal husbandry,most regions around the lakes are ideal for local people to live,because of their natural advantages In past 40k years,the climate of North Qinghai has been fluctuating from cold dry to warm humid,accompanied by the expanding and shrinking of lakes' areas,that being the environmental background of hominid migrating and developing Paleolithic remains have been found on Xiao Qaidam lake shore,dating to about 30kaB P at which the anatomically modern human occurred in northeast Asia At the turn of pleistocene and Holocene,when the climate changed warm,ancient people came to north Qinghai again While the microlithic technique became very common in north China after 8 kaB P ,in warmer and wetter climatic conditions and at high lake stand ,human activities became more and more frequent