Environmental records of carbon in recent lake sediments

被引：41

作者：

Chen, J ^{[1
]}

Wan, GJ

Wang, FS

Zhang, DD

Huang, RG

Zhang, F

Schmidt, R

机构：

[1] Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Peoples R China

[2] Univ Hong Kong, Dept Geog & Geol, Hong Kong, Hong Kong, Peoples R China

[3] Austrian Acad Sci, Inst Limnol, A-5310 Mondsee, Austria

来源：

SCIENCE IN CHINA SERIES D-EARTH SCIENCES | 2002年 / 45卷 / 10期

基金：

中国国家自然科学基金;

关键词：

lake sediment; organic carbon; inorganic carbon; delta C-13;

D O I：

10.1360/02yd9086

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Based on careful sampling and accurate analysis of recent sediments in Lake Chenghai, this paper discusses the staggered positive/negative correlation between organic carbon (OC) concentration and inorganic carbon (IC) concentration. The result indicates that temperature change, and its induced relative changes are the main factors affecting the relationship between IC concentration, delta(13)C of carbonate and OC concentration. When temperature and its induced photosynthesis strength change control autochthonous calcite precipitation, OC concentration is positively correlated with IC concentration and delta(13)C of carbonate. When temperature and its induced physical/chemical changes dominate, OC concentration displays negative correlation with IC concentration and delta(13)C of carbonate. IC concentration and delta(13)C of carbonate in sediments of Lake Chenghai are good proxies for climatic warm/cold changes.

引用

页码：875 / 884

页数：10

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