通量梯度法在温室气体及同位素通量观测研究中的应用与展望
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Applications and prospect of the flux-gradient method in measuring the greenhouse gases and isotope fluxes
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图1. 白天典型森林内部及上方的大气分层以及温室气体浓度、风速和中性层结条件下的湍流扩散系数廓线示意图。d, 零平面位移; h, 冠层高度; K, 湍流扩散系数;$~{{\bar{S}}_{\text{c}}}$, CO2浓度; $\bar{u}$, 风速; ${{u}_{*}}$, 摩擦速度。 |
Fig. 1. Schematic diagram of the atmospheric layers within and above the forest canopy, and the vertical profiles for typical greenhouse gases concentration, wind speed and the turbulence diffusion coefficient under neutral stability condition during the daytime. d, zero-plane displacement; h, canopy height; K, turbulent diffusion coefficient; $~{{\bar{S}}_{\text{c}}}$, CO2 concentration; $\bar{u}$, wind speed; ${{u}_{*}}$, antitriptic wind speed. |
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