| 光谱学与光谱分析 |
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| The Study of Transpiration Influence on Plant Infrared Radiation Character |
| LING Jun, ZHANG Shuan-qin, PAN Jia-liang, LIAN Chang-chun, YANG Hui |
| The First Engineers Scientific Research Institute of the General Armaments Department, Wuxi 214035, China |
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Abstract Studying vegetation infrared radiation character is the base of developing infrared camouflage and concealment technology of ground military target. Accurate fusion of target and background can be achieved by simulating formation mechanism of vegetation infrared radiation character. Leaf transpiration is characteristic physiological mechanism of vegetation and one of the main factors that influence its infrared radiation character. In the present paper, physical model of leaf energy balance is set up. Based on this model the influence of plant transpiration on leaf temperature is analyzed and calculated. The daily periodic variation of transpiration, leaf temperature and infrared radiation character of typical plants such as camphor tree and holly is actually measured with porometer and infrared thermal imaging system. By contrasting plant leaf with dryness leaf, experimental data indicates that plant transpiration can regulate leaf energy balance effectively and control leaf temperature in a reasonable range and suppress deep range variation of leaf infrared radiation character.
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Received: 2012-01-17
Accepted: 2012-04-21
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Corresponding Authors:
LING Jun
E-mail: 328105519@qq.com
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