| 光谱学与光谱分析 |
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| Detecting Leaf and Twig Temperature of Some Trees by Using Thermography |
| WANG Fei1，Haruhiko YAMAMOTO2 |
1. Shandong Forestry Research Institute, Ji’nan 250014, China
2. Agricultural Faculty of Yamaguchi University, 753-8515 Yamaguchi，Japan |
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Abstract Noninvasive detection of temperature with thermography from natural things has been used in many fields and it was attempted to detect the temperature for leaves and branches of trees in the present paper. Leaf and twig temperatures were monitored during the increasing process of temperature under the direct sunshine heating. The difference of specific heat and latent heat from leaves and twigs caused by different water content and transpiration capacity were measured. Not only the leaf temperature, scorch and branch dieback were detected, but the transpiration cooling fail of sweetgum (Liquidambar styraciflua L.) leaves was successfully measured by using thermography. In this study, the local water stress characteristics on sweetgum leaves from specially designed vein severing became special materials for studying the leaf temperature or transpiration failure. The temperature gradient on severed leaf made the thermo image taking easy, with less systematical error. Direct comparison between non-severed lobes and vein-severed lobes on the same leaf lamina makes it more comparable. According to thermography analysis, significant high temperature area was observed and there existed the consistence between high temperature area and the reddened leaf lamina.
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Received: 2009-12-10
Accepted: 2010-03-20
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Corresponding Authors:
WANG Fei
E-mail: wf-126@126.com;c5417@yamagushi-u.ac.jp
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[1] Rosenberg N J. Microclimate: The biological Environment. New York, London: Jone Wiley & Sons, Inc., 1974. 69.
[2] Donald R. Plant Physiol, 2001, 125: 29.
[3] Gates D M. Ann. Rev. Plant Physiol., 1968, 19: 211.
[4] Fitter A H, Hay R K M. Environmental Physiology of Plant. San Diego; Landon: Academic Press, 2002. 162.
[5] Mansfield T A, Jones M B. Photosynthesis: Leaf and Whole Plant Aspects. In Hall M.A. eds. Plant Structure, Function and Adaptation. Landon; Basingstroke: Macmillan Press Ltd., 1976. 315.
[6] Jones H G. Adv. Bot. Res., 2004, 41: 107.
[7] Jones H G. Plant Cell. Environ., 1999, 22: 1043.
[8] Chaerle L, Caeneghem W V, Messens E, et al. Nature Biotechnol., 1999, 17: 813.
[9] Chaerle L, Van Der Straeten D. Trends in Plant Science, 2000, 5(11): 495.
[10] Grant O M, Chaves M M, Jones H G. Physiologia Plantarum, 2006, 127: 507.
[11] Jones H G, Stoll M, Santos T, et al. J. Exp. Bot., 2002, 53: 2249.
[12] Prytz G, Futsaether C M, Johnsson A. New Phytol., 2003, 158: 249.
[13] Chaerle L, Leinonen I, Jones H G, et al. Journal of Exp. Bo., 2007, 58(4): 773.
[14] Grant O M, Tronina L, Jones H G, et al. Journal of Exp. Bo., 2007, 58: 815.
[15] Jones H G, Leinonen L. Journal of Agric. Meteorol., 2003, 59(3): 205.
[16] Nilsson H E. Can. J. Plant Phathol. 1995, 17: 154.
[17] YANG Xiao-lin，DU Lai-lin，FENG Li-chun(杨小林，杜来林，冯立春). Laser and Infrared(激光与红外), 2007, 37(11): 1188.
[18] Shull C A. Plant Physiology, 1934, 9: 387.
[19] Wang F, Yamamoto H, Ibaraki. Journal of Forestry Research, 2009, 20(3): 254.
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