The carbon flux and its environmental factors in a north subtropical secondary oak forest ecosystem

doi:10.3969/j.jssn.1000-2006.2011.03.008

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2011, Vol. 35 ›› Issue (03): 7-.doi: 10.3969/j.jssn.1000-2006.2011.03.008

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The carbon flux and its environmental factors in a north subtropical secondary oak forest ecosystem

JIANG Yan, HU Haibo*, ZHANG Xueshi, XUE Jianhui

College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China

Online:2011-06-13 Published:2011-06-13

Abstract

Abstract: The research choice the secondary oak forest ecosystem in the forest ecopositioning location research station of Yangtze River Delta, Southeastern China, and monitored the CO2, H2O, temperature, moisture, PAR, and so on by eddy covariance. The data of regulated change and process of diurnal Net Ecosystem Exchange (NEE) of forest ecosystem were obtained during a year. The ecosystem began to absorb CO2 at about 7: 00 am, and maintains in great absorption from 10:00 to 14:00, at about 17: 30, the ecosystem began to release CO2. The analysis of the relationships of NEE and forest ecosystem and environmental factors, shows that: When the PAR>5 μmol/(m2·s), the relationship of NEE and PAR has no significant correlation in different season, monthly average NEE and monthly average temperature in canopy had linear relationship.

CLC Number:

S764

JIANG Yan, HU Haibo*, ZHANG Xueshi, XUE Jianhui. The carbon flux and its environmental factors in a north subtropical secondary oak forest ecosystem[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2011, 35(03): 7-.

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The carbon flux and its environmental factors in a north subtropical secondary oak forest ecosystem

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