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Comparison of infrared canopy temperature in a rubber plantation and tropical rain forest 

 
论文编号:
作者: Song QH
刊物名称: International Journal of Biometeorology
所属学科:
论文题目英文: Comparison of infrared canopy temperature in a rubber plantation and tropical rain forest
年: Oct 2017
卷: 61
期: 10
页: 1885–1892
联系作者: Song QH; Zhang YP
收录类别:
影响因子: 2.204
参与作者:
备注:
摘要: Canopy temperature is a result of the canopy energy balance and is driven by climate conditions, plant architecture, and plant-controlled transpiration. Here, we evaluated canopy temperature in a rubber plantation (RP) and tropical rainforest (TR) in Xishuangbanna, southwestern China. An infrared temperature sensor was installed at each site to measure canopy temperature. In the dry season, the maximum differences (Tc − Ta) between canopy temperature (Tc) and air temperature (Ta) in the RP and TR were 2.6 and 0.1 K, respectively. In the rainy season, the maximum (Tc − Ta) values in the RP and TR were 1.0 and −1.1 K, respectively. There were consistent differences between the two forests, with the RP having higher (Tc − Ta) than the TR throughout the entire year. Infrared measurements of Tc can be used to calculate canopy stomatal conductance in both forests. The difference in (Tc − Ta) at three gc levels with increasing direct radiation in the RP was larger than in the TR, indicating that change in (Tc − Ta) in the RP was relatively sensitive to the degree of stomatal closure.
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