气候变化领域集成服务门户(CCPortal): Distribution of lipids in modern soils from various regions with continuous climate (moisture-heat) change in China and their climate significance

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DOI	10.1007/s11430-007-2062-9
	Distribution of lipids in modern soils from various regions with continuous climate (moisture-heat) change in China and their climate significance
	Wang YongLi; Fang XiaoMin; Bai Yan; Xi XiaoXia; Zhang XiZheng; Wang YouXiao
发表日期	2007
ISSN	1006-9313
起始页码	600
结束页码	612
卷号	50 期号:4
英文摘要	Total 26 modern soil samples were collected from various regions under different climate conditions from tropical to arid temperate in China and systematically analyzed for their organic matters by GC/MS in order to evaluate climatic impacts on soil organic components. Abundant lipids molecules were recognized, including n-alkanes, n-alkenones, and long-chain branched alkanes. We find the predominance of main peaks of long-chain n-alkanes (nC(29), nC(31), nC(33)) and short-chain ones (nC(16), nC(17), nC(18)) records information of soil generation in warm-humid and cold-dry regions. The proportion of n-alkanes (nC(16)+nC(17)+nC(18)) to (nC(29)+nC(31)+nC(33)) varies in good agreement with moisture-heat conditions and thus probably can serve as a new index for climate change. The ratios of C-21(-)/nC(22)(+), nC(17)/nC(31) and (nC(15)+nC(17)+nC(19)) / (nC(27) + nC(29) + nC(31)) of n-alkanes, indicating respectively input ratios of lower bacterial alga, aquatic organisms, and higher plants and terraneous organisms, co-vary well in different climate regions from forest to grassland and desert, suggesting that they have also reflected the difference of climates between monsoon region and inland one. The C-21(-)/C-22(+) ratio of n-alkan-2-one records largely the discrepancy of temperature from north to south of China bordered by the Qinling Mountains, but less humidity. The C-21(-)/C-22(+) ratio of n-alkan-3-ones changes well with climatic factors, such as temperature and humidity. The biogenic source of series A-D long-chain branched alkanes may be derived from some kinds of special epiphyte that most likely live in weak oxic-anoxic and moisture-heat environments, suggesting their distribution record as well some information on climatic change. All these researches demonstrate that the distributions of lipids molecules in modern soils in China record well signals of climates from quite different climatic regions, and can serve as important climatic proxies to reveal climatic change over China.
关键词	MOLECULAR FOSSIL RECORD LONG-CHAIN ALKENONES ORGANIC-MATTER LAKE-SEDIMENTS BLACK SHALES ALKANES BIOMARKERS BASIN GEOCHEMISTRY PALEOCLIMATE
英文关键词	lipids molecule; modern soil; climate (moisture-heat) continuously changing regions; climate index; China
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000246273300013
来源期刊	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257456
推荐引用方式 GB/T 7714	Wang YongLi,Fang XiaoMin,Bai Yan,et al. Distribution of lipids in modern soils from various regions with continuous climate (moisture-heat) change in China and their climate significance[J]. 中国科学院青藏高原研究所,2007,50(4).
APA	Wang YongLi,Fang XiaoMin,Bai Yan,Xi XiaoXia,Zhang XiZheng,&Wang YouXiao.(2007).Distribution of lipids in modern soils from various regions with continuous climate (moisture-heat) change in China and their climate significance.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,50(4).
MLA	Wang YongLi,et al."Distribution of lipids in modern soils from various regions with continuous climate (moisture-heat) change in China and their climate significance".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 50.4(2007).