DOI: 10.1016/j.jag.2015.02.006
Scopus记录号: 2-s2.0-84943546671
论文题名: Thermal infrared imaging of the temporal variability in stomatal conductance for fruit trees
作者: Struthers R ; , Ivanova A ; , Tits L ; , Swennen R ; , Coppin P
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2015
卷: 39 起始页码: 9
结束页码: 17
语种: 英语
英文关键词: Canopy temperature
; Pear trees
; Stomatal conductance
; Thermal imaging
; Vapor pressure deficit
Scopus关键词: fruit
; infrared imagery
; remote sensing
; stomatal conductance
; temporal variation
; vapor pressure
; water stress
; Pyrus
; Pyrus communis
英文摘要: Repeated measurements using thermal infrared remote sensing were used to characterize the change in canopy temperature over time and factors that influenced this change on 'Conference' pear trees (Pyrus communis L.). Three different types of sensors were used, a leaf porometer to measure leaf stomatal conductance, a thermal infrared camera to measure the canopy temperature and a meteorological sensor to measure weather variables. Stomatal conductance of water stressed pear was significantly lower than in the control group 9 days after stress began. This decrease in stomatal conductance reduced transpiration, reducing evaporative cooling that increased canopy temperature. Using thermal infrared imaging with wavelengths between 7.5 and 13 μm, the first significant difference was measured 18 days after stress began. A second order derivative described the average rate of change of the difference between the stress treatment and control group. The average rate of change for stomatal conductance was 0.06 (mmolm-2 s-1) and for canopy temperature was -0.04 (°C) with respect to days. Thermal infrared remote sensing and data analysis presented in this study demonstrated that the differences in canopy temperatures between the water stress and control treatment due to stomata regulation can be validated. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79599
Appears in Collections: 气候变化事实与影响
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作者单位: KU Leuven Department of Biosystems, Geomatics, Willem de Croylaan 34, Leuven, Belgium; I-BioStat, KU Leuven and Universiteit Hasselt, Kapucijnenvoer 35, Leuven, Belgium; KU Leuven Department of Biosystems, Willem de Croylaan 42, Leuven, Belgium; IITA, International Institute of Tropical Agriculture, POB 10, Duluti, Arusha, Tanzania; Bioversity International, Willem de Croylaan 42, Leuven, Belgium
Recommended Citation:
Struthers R,, Ivanova A,, Tits L,et al. Thermal infrared imaging of the temporal variability in stomatal conductance for fruit trees[J]. International Journal of Applied Earth Observation and Geoinformation,2015-01-01,39