泾河中游ETC全新世剖面木炭屑记录的环境信息解译  

The interpretation of the environment information recorded by charcoal in a Holocene section at ETC site in the middle reaches of Jinghe

作　　者：赵文宇[1] 庞奖励[1] 黄春长[1] 

机构地区：[1]陕西师范大学旅游与环境学院,陕西西安710062

出　　处：《宝鸡文理学院学报（自然科学版）》2005年第3期224-227,共4页Journal of Baoji University of Arts and Sciences(Natural Science Edition)

基　　金：国家自然科学基金项目(40471119);陕西省自然基金(2003D01)资助

摘　　要：通过对泾河中游ETC全新世剖面的木炭屑分布规律的分析,结合磁化率和考古资料讨论了该地区全新世时期野火活动规律及其对环境的指示意义。表明马兰黄土堆积时期和全新世早期,气候比较温和干燥,当地常有自然野火发生;全新世大暖期(8500～3100aB.P.),气候湿润,但由于人类活动的影响,野火活动仍有发生;从3100aB.P.开始,人类活动加强,加之气候变得干旱,野火活动异常频繁。Through the analysis of the distribution of charcoal in the Holocene section at ETC site in the middle reaches of Jinghe,we discussed the wildfire activity and the its indication of environment in this area during Holocene with 1he magnetic susceptibility and archaeological materials. The result shows that in the phase of piling of Malan loess and the early Holocene,the climate was warmer and arid,the wildfire often occurred. During the Holocene Megathermal,the climate was humid, but the wildfire still occurred because of the human activity intensified. Since 3100 a B. P. ,the human activity intensified and the climate became arid,so the wildfire activity was extremely frequent.

关 键 词：木炭屑 全新世 泾河中游 环境信息 

分 类 号：P532[天文地球—古生物学与地层学]