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三江平原小叶章湿地土壤的CO_2通量(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2003年03期
Page:
51-54
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
Soil Surface CO_2 Fluxes of Deyeuxia angustifolia Wetland in Sanjiang Plain
Article ID:
1000-2006(2003)03-0051-04
Author(s):
LI ZhaofuL XianguoYANG QingGAO Junqin
Northeast Institute of Geography and Agricultural Ecology,CAS,Changchun 130012,China
Keywords:
Deyeuxia angustifolia wetlandSoil surface CO_2 fluxSoil temperature
Classification number :
S718.5
DOI:
10.3969/j.jssn.1000-2006.2003.03.012
Document Code:
A
Abstract:
In many temperatezone ecosystems,seasonal changes in environmental and biological factors influence the dynamics and magnitude of soil surfaceatmosphere exchange.Research was conducted to measure soilsurface fluxes of CO2 in Deyeuxia angustifolia dominated wetland during the growing seasons in the Sanjiang Plain of Northeast China.Data were collected between July and October 2001.Soilsurface CO2 fluxes were measured with a closedchamber system.This study was carried out to find out the seasonal fluctuation and daily change in soilsurface CO2 fluxes from Deyeuxia angustifolia wetlands as well as to investigate the edaphic factors controlling the CO2 fluxes.The results revealed that there were both seasonal fluctuations and daily change in CO2 fluxes.The ranges of measured soilsurface CO2 flux were 0.208~1.265 g/(m2·h).Soilsurface CO2 fluxes were 0.619 g/(m2·h)in average level.Study of several edaphic factors like soil temperature and soil moisture of Deyeuxia angustifolia wetland showed that the fluxtemperature relationships are evident exponent correlation(the correlation coefficient is 0.769 9).

References

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Last Update: 1900-01-01