青藏高原东缘黄土与环境变化研究进展  

Loess and Environmental Change on the Eastern Edges of the Qinghai-Xizang Plateau

作　　者：文星跃[1,2] 黄成敏[1] 

机构地区：[1]四川大学建筑与环境学院,成都610065 [2]绵阳师范学院资源环境工程学院,四川绵阳621000

出　　处：《地球与环境》2011年第2期251-256,共6页Earth and Environment

基　　金：教育部新世纪优秀人才支持计划项目(NCET-08-0379);高校学科创新引智计划项目(B08037)资助

摘　　要：系统分析了青藏高原东缘黄土地层研究的主要内容和方法,指出了该区黄土与环境变化研究中存在的问题及未来研究方向。青藏高原东缘山原峡谷地带呈不连续分布的黄土地层,是1.15 MaB.P.以来冰缘物质风成沉积的结果。黄土沉积和成壤特征反映了沉积以来的古气候演变特征,也为青藏高原隆升和冰川研究提供了证据。黄土台地的形成与早期人类活动有关。今后应在剖面选择和考察、多指标运用、定量恢复古气候、标准剖面的建立以及不同黄土间的对比等方面加强研究。The progress in research on the loess stratigraphy on the eastern edges of the Qinghai-Xizang Plateau was systematically reviewed,and the comments and prospects involved in the field of loess and environment change were proposed.The loess has been scatteredly deposited on the highland and canyons of the eastern edges of the Qinghai-Xizang Plateau derived from periglacial materials under the action of wind since 1.15 Ma B.P.The loess deposits and their pedogenic characteristics indicated the paleoclimate change,cryospheric evolution,and the uplift of the Qinghai-Xizang Plateau.Anthropogenic activities in ancient times played an active role in the formation of loess terraces.Furthermore,great attention should be paid to the selection and investigation of the loess profile,multi-proxies analysis,quantitative reconstruction in paleoclimate,establishment of a standard profile,and the comparative study of loess among various sites in the future.

关 键 词：青藏高原东缘 黄土-古土壤 环境变化 

分 类 号：P534.63[天文地球—第四纪地质学] X141[天文地球—古生物学与地层学]