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首页> 外文期刊>Journal of Water Resource and Protection >The Impact of a Heterogeneous Surface on Spatiotemporal Uncertainties of Sensible Heat, Latent Heat, and CO&sub&2&/sub& Flux Measured over the Secondary Forest
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The Impact of a Heterogeneous Surface on Spatiotemporal Uncertainties of Sensible Heat, Latent Heat, and CO&sub&2&/sub& Flux Measured over the Secondary Forest

机译：异质表面对明智的热，潜热和Co＆ 2 / sub＆gt的施加对显热，潜热和Co＆ / sub＆gt的影响。在二级森林中测量的助焊剂

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摘要

The turbulent fluxes, such as sensible and latent heat fluxes and CO_(2) flux, are globally observed over various terrestrial areas in order to understand the interaction between biosphere and atmosphere. Although the turbulent flux observations are generally performed on a horizontally homogeneous surface, the spatial distribution of the soil moisture is not homogeneous even on cultivated land with homogeneous vegetation, indicating that the development of each plant would be different and that the plant physiology, such as photosynthesis and growth, would be heterogeneous. In this study, to clarify the impact of a heterogeneous surface on spatiotemporal uncertainty of turbulent fluxes, a simultaneous flux observation experiment was conducted at different heights (20 m and 30 m) above the ground surface in a secondary seasonal tropical forest located in the Tak Province, Thailand. We defined ε as the spatial uncertainty of the turbulent flow flux, as proposed by Kim et al. (2011b) [ 1 ], and observed that ε of CO_(2) flux was high, whereas ε of sensible and latent heat fluxes were low. This is likely to be caused by spatial uncertainty such as a heterogeneous surface. The CO_(2) environment was heterogeneous; however, sensible and latent heat environments were homogeneous because the source area received insolation uniformly. Therefore, the analytical results for the CO_(2) flux presented a different pattern from those exhibited by the analytical results of the latent and sensible heat fluxes.
机译：在各种陆地区域上全球观察到湍流助熔剂，例如明智和潜热通量和CO_（2）通量，以了解生物圈和大气之间的相互作用。尽管通常在水平均匀的表面上进行湍流助熔剂观察，但即使在均匀植被的耕地上也不均匀地均匀，表明每个植物的发育都会不同，植物生理学，例如光合作用和生长将是异质的。在这项研究中，为了阐明异质表面对湍流通量的时空不确定性的影响，在位于达德的二级季节性热带森林中，在地面的不同高度（20米和30米）上进行同时助熔剂观察实验省，泰国。我们将ε定义为湍流流量的空间不确定性，如Kim等人所提出的。 （2011B）[1]，观察到CO_（2）通量的ε高，而浓度和潜热通量的ε是低的。这可能是由异构表面的空间不确定性引起的。 CO_（2）环境是异质的;然而，明智和潜热环境是均匀的，因为源极面积均匀地接受了呈现。因此，CO_（2）通量的分析结果呈现了由潜伏和明智的热通量的分析结果表现出的不同模式。

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