Holocene vegetation cover in Qin’an area of western Chinese Loess Plateau revealed by n-alkane

查看全文 作　　者：ZHONG [1,2,3]YanXia;CHEN [1]FaHu;AN [1]ChengBang;XIE [2]ShuCheng;HUANG [2]XianYu

机构地区：[1]Key Laboratory of Western China's Environmental Systems (MOE), Lanzhou University, Lanzhou 730000, China;[2]Laboratory of Earth Surface Systems, Chinese University of Geosciences, Wuhan 430074, China;[3]Faculty of Resource and Environment, Ningxia University, Yinchuan 750021, China

出　　处：《Chinese Science Bulletin》索引2007年第52卷第12期,共7页

基　　金：Supported by the NSFC Innovation Team Project (No. 401421101);the Open Foun-dation of Laboratory of Earth Surface System;China University of Geosciences;the Key Program of the National Natural Science Foundation of China (No. 90502008) 摘　　要：Previous studies have found that wetlands prevailed in western Chinese Loess Plateau and pine pollen could reach up to 80% in Qin’an area of the plateau during middle Holocene. It was then deduced that forest vegetation covered Qin’an area in a warm and wet climate during middle Holocene. The proxies of molecule biomarkers from two Holocene sections, a swamp-alluvial loess section and a typical loess-paleosol section are used to reconstruct regional vegetation history. It is found that the heavy-molecular-weight (HMW) homologues of the n-alkanes in all samples exhibit a pronounced odd-over-even predominance, maximizing at C31 and the abundance of the nC27-alkanes is the lowest in nC27, nC29, nC31, i.e. C27 关键词：分子生物标志烷烃全新世植被覆盖中国黄土高原

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Holocene vegetation cover in Qin’an area of western Chinese Loess Plateau revealed by n-alkane

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