[CO2 turbulent exchange in a broadleaved Korean pine forest in Changbai Mountains].
The measurement of CO2 turbulent exchange in a broadleaved Korean pine forest in Changbai Mountains by an open-path eddy covariance system showed that with near neutral atmospheric stratification, the CO2 and vertical wind components over canopy in inertial subrange followed the expected -2/3 power law, and the dominant vertical eddy scale was about 40 m. The frequency ranges of eddy contributions to CO2 fluxes were mostly within 0.01-2.0 Hz, and the eddy translated by low frequency over canopy contributed more of CO2 fluxes. The open-path eddy covariance system could satisfy the estimation of turbulent fluxes over canopy, but the CO2 fluxes between forest and atmosphere were generally underestimated at night because the increment of non turbulent processes, suggesting that the CO2 fluxes estimated under weak turbulence needed to revise correspondingly.
Wu
Jia-bing
JB
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. bjfu_1999@hotmail.com
Guan
De-xin
DX
Sun
Xiao-min
XM
Shi
Ting-ting
TT
Han
Shi-jie
SJ
Jin
Chang-jie
CJ
D002245:Carbon Dioxide / Q000032:analysis*; D002681:China; D017753:Ecosystem; D028223:Pinus / Q000378:metabolism*; D018526:Plant Transpiration / Q000502:physiology*
D002245:Carbon Dioxide