Document Detail


Influence of ozone pollution and climate variability on net primary productivity and carbon storage in China's grassland ecosystems from 1961 to 2000.
MedLine Citation:
PMID:  17618716     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Our simulations with the Dynamic Land Ecosystem Model (DLEM) indicate that the combined effect of ozone, climate, carbon dioxide and land use have caused China's grasslands to act as a weak carbon sink during 1961-2000. This combined effect on national grassland net primary productivity (NPP) and carbon storage was small, but changes in annual NPP and total carbon storage across China's grasslands showed substantial spatial variation, with the maximum total carbon uptake reduction of more than 400gm(-2) in some places of northeastern China. The grasslands in the central northeastern China were more sensitive and vulnerable to elevated ozone pollution than other regions. The combined effect excluding ozone could potentially lead to an increase of 14Tg C in annual NPP and 0.11Pg C in total carbon storage for the same time period. This implies that improvement in air quality could significantly increase productivity and carbon storage in China's grassland ecosystems.
Authors:
Wei Ren; Hanqin Tian; Guangsheng Chen; Mingliang Liu; Chi Zhang; Arthur H Chappelka; Shufen Pan
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2007-07-05
Journal Detail:
Title:  Environmental pollution (Barking, Essex : 1987)     Volume:  149     ISSN:  0269-7491     ISO Abbreviation:  Environ. Pollut.     Publication Date:  2007 Oct 
Date Detail:
Created Date:  2007-09-03     Completed Date:  2008-04-03     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8804476     Medline TA:  Environ Pollut     Country:  England    
Other Details:
Languages:  eng     Pagination:  327-35     Citation Subset:  IM    
Affiliation:
School of Forestry and Wildlife Sciences, Auburn University, 602 Duncan Drive, Auburn, AL 36849, USA.
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MeSH Terms
Descriptor/Qualifier:
Air Pollutants / adverse effects*,  analysis
Carbon / metabolism
Carbon Dioxide / adverse effects
China
Climate*
Computer Simulation
Crops, Agricultural*
Ecosystem
Environmental Monitoring / methods
Models, Theoretical
Ozone / adverse effects*,  analysis
Poaceae / growth & development*,  metabolism
Time
Chemical
Reg. No./Substance:
0/Air Pollutants; 10028-15-6/Ozone; 124-38-9/Carbon Dioxide; 7440-44-0/Carbon

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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