Health & Environmental Research Online (HERO)


Print Feedback Export to File
1555382 
Journal Article 
Value estimation of greenhouse gases exchange in wetland ecosystem of Sanjiang Plain, China 
Liu Xiaohui; Lu Xianguo; Jiang Ming; Wang Xigang 
2009 
Yes 
Chinese Geographical Science
ISSN: 1002-0063
EISSN: 1993-064X 
SPRINGER 
NEW YORK 
19 
1 
55-61 
WOS:000263511000007 
The objective of this study is to quantify the values of
greenhouse gases (GHGs) exchange in carbon equivalents of marshes and paddy fields in the
Sanjiang Plain, Heilongjiang Province, China. We obtained the GHGs exchange values based on
comparable price by calculating the carbon sequestration values and the GHGs emission values of
marshes and paddy fields respectively in four periods of 1982, 1995, 2000 and 2005. It is noted
that the GHGs emission values are always negative. In this study, the marshes areas decreased
from 1438977.0 to 775,132.2ha and the paddy fields areas increased from 417195.8 to 934205.0ha.
The values of GHGs exchange of marshes varied from 135877.156x10(6) to 136882.534x10(6) yuan
(RMB) and those of paddy fields varied from 1006.256x10(6) to 2767.645x10(6) yuan. The GHGs
exchange values of marshes decreased from 1982 to 2005 on the whole, reversely, those of paddy
fields increased, but those in 2005 were lower than those in 2000. In different periods, the GHGs
exchange values were always higher in marshes than in paddy fields. The contribution rate of GHGs
exchange values per unit area of marshes was also very high in different periods, and the maximum
was up to 98.35% in 2005. As far as the whole wetland ecosystem (including marshes and paddy
fields), assuming a linear change in GHGs exchange values, it represented a cumulative increase
of 20926.757x10(6) yuan from 1982 to 2005. By adding GHGs exchange values increased during those
four periods, we obtained a cumulative net increase values of GHGs exchange of wetland ecosystem
of 18200.860x10(6) yuan. The results will be useful for understanding the indirect services
provided by marshes and paddy fields. 
carbon equivalents; GHGs exchange values; contribution rate; cumulative value; Sanjiang Plain