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地球科学进展  1998, Vol. 13 Issue (4): 369-375    DOI: 10.11867/j.issn.1001-8166.1998.04.0369
干旱气候变化与可持续发展     
河流碳通量与陆地侵蚀研究
高全洲,沈承德
中国科学院广州地球化学研究所 广州 510640
RIVERINE CARBON FLUX AND CONTINENTAL EROSION
Gao Quanzhou,Shen Chengde
Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640
 全文: PDF(240 KB)  
摘要:

河流碳通量系陆地侵蚀产物,它构成全球碳循环的一个重要环节。河流碳通量在数量上远小于全球碳循环的其他环节,但由于与陆地生态系统联系密切,故对它的研究尤为重要。全球每年河流碳通量约为1GtC(109t碳),其中约60%为无机碳、40%为有机碳。溶解态有机碳和颗粒状有机碳主要来源于土壤侵蚀,另有一部分有机碳来源于河湖中的浮游植物;溶解态无机碳主要源于大气中CO2和碳酸盐;颗粒无机碳主要指未溶解的碳酸盐。亚洲季风区河流对全球河流碳通量具有较大贡献,而对其研究程度较低。河流碳通量研究既可为流域治理提供基础资料,也是进一步了解人为CO2“未知汇”的途径之一。

关键词: 河流碳通量陆地侵蚀CO2温室效应    
Abstract:

Riverine carbon, which stems from continental erosions, represents an important link in the global carbon cycle. It is small in quantity compare with other links of the global carbon cycle, however, it deserves especial investigation for its close connection with land ecosystem. The total carbon transported to ocean by rivers is about 1 Gt every year, 60% of which is inorganic carbon, and 40% of which is organic one. Dissolved and particulate organic carbon (DOC and POC, respectively) come from the chemical and mechanical erosion of the soil. On the other hand, the phytoplankton is another source of a small part of organic carbon. Dissolved inorganic carbon (DIC) is the result of the dissolution of at mospheric carbon dioxide and carbonate. Undissolved carbonate composes of particulate inorganic carbon (PIC). The rivers in monsoonal Asia make the greatest contribution to the global riverine carbon flux for the most intense erosion in those areas. How ever, the investigation of the riverine carbon flux in monsoonal Asia is not being penetrated enough. The research of riverine carbon flux would provided scientific basis for the soil and water conservation, and it is also a new way to probe the ant hropogenic carbon dioxide missing sink.

Key words: Riverine carbon flux    Continental erosion    Carbon dioxide    Greenhouse effect.
收稿日期: 1997-07-02 出版日期: 1998-08-01
:  P592  
基金资助:

本研究获得中国科学院重点项目“珠江流域陆地侵蚀与碳通量变化研究”的部分资助。

通讯作者: 高全洲   
作者简介: 高全洲, 男, 1965 年 9 月出生, 博士后, 主要从事全球变化和第四纪地球化学研究。
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引用本文:

高全洲,沈承德. 河流碳通量与陆地侵蚀研究[J]. 地球科学进展, 1998, 13(4): 369-375.

Gao Quanzhou,Shen Chengde. RIVERINE CARBON FLUX AND CONTINENTAL EROSION. Advances in Earth Science, 1998, 13(4): 369-375.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.1998.04.0369        http://www.adearth.ac.cn/CN/Y1998/V13/I4/369

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