Model of leaf energy distribution and its experimental validation of <Emphasis Type="Italic">Populus tomentosa</Emphasis> Carr. |
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Authors: | Wen-jie Zhang Min Wang Ying-bai Shen Zhi-yi Zhang |
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Institution: | (1) College of Science, Beijing Forestry University, Beijing, 100083, P. R. China;(2) Key Laboratory for Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, Beijing, 100083, P. R. China |
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Abstract: | Leaf temperature of a plant is the result of heat transfer between the plant and its environment. There are many factors that
can affect leaf temperature, such as the solar radiation energy, environmental temperature, wind velocity, evaporation on
the leaf surface, photosynthesis, respiration and so on, which have different effects on the temperature of leaves. In first
instance, we analyzed the heat transfer on leaves of Populus tomentosa Carr. theoretically and constructed a model of energy distribution. We then validated the model by analyzing seven different
kinds of one-year-old P. tomentosa leaves experimentally. The result shows that solar radiation is the main energy input and the dominant ways of thermal diffusion
are heat transfer between the upper and lower leaf surfaces and evaporation from the leaf surface. |
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Keywords: | Populus tomentosa Carr leaf heat transfer energy distribution |
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