青藏高原西南部仲巴地区细石器人类活动的时代探讨  

Age of Microlith human activities in Zhongba area,southwestern margin of Qinghai-Tibet Plateau

作　　者：李拓宇[1,2,3] 伍永秋[1,2] 杜世松 黄文敏[1] 蒿承智 

机构地区：[1]北京师范大学地表过程与资源生态国家重点实验室,北京100875 [2]北京师范大学防沙治沙教育部工程研究中心,北京100875 [3]首都师范大学学报编辑部,北京100048

出　　处：《北京师范大学学报（自然科学版）》2016年第1期91-96,共6页Journal of Beijing Normal University(Natural Science)

基　　金：国家重点基础研究发展计划基金资助项目(2013CB956001);国家自然科学基金资助项目(41071129)

摘　　要：青藏高原西南部仲巴地区已发现有3处细石器遗存地点,在仲巴地区选取了一个全新世风成沉积剖面进行年代测试分析以及粒度、地球化学元素等环境指标的分析,探讨仲巴地区的人类活动与气候变化及风沙活动的关系,进而推算细石器遗存的时代.8.9~7.3ka BP为气候湿润,风沙活动弱,成壤作用较强的时期,自然资源相对丰富,能够为细石器先民提供良好的狩猎活动条件.到7.3~3.8ka BP时期,气候干燥,风沙活动强,不利于人类活动.因此推测该区细石器遗存的形成时代在8.9~7.3ka BP左右.Three Microlith relic sites have been found in Zhongba area,southwestern margin of QinghaiTibet Plateau.Anaeolian deposit（ZZ）near Microlith relid sites was chosen,accelerator mass spectrometry（AMS）14C analysis and optically stimulated luminescence（OSL）of ZZ were used to determine ages,grain size and geochemical parameters were analysed.Relationship between Holocene environment and human activities was reconstructed,the time of Microlith human activities in Zhangba area was determined.It was found that from8.9ka BP to 7.3ka BP,climate was humid,aeolian activity was weak with strong pedogenesis,with relative abundance of natural resources which were good for hunting of Micorlith human.From 7.3ka BP to 3.8ka BP,climate was dry,aeolian activity was strong,which was not conducive to human activities.It is therefore concluded that the formation time of Zhongba Microlith relics might be from 8.9-7.3ka BP.

关 键 词：全新世 风沙活动 气候变化 仲巴地区 细石器 

分 类 号：K901.6[历史地理—人文地理学]