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| 一种用于叶片散射光分布测定的新型装置及性能评价 | |
| 引用本文： | 劳彩莲,李保国,郭焱,严泰来.一种用于叶片散射光分布测定的新型装置及性能评价[J].农业工程学报,2005,21(9):85-89. |
| 作者姓名： | 劳彩莲 李保国 郭焱 严泰来 |
| 作者单位： | 1. 中国农业大学资源与环境学院,教育部植物-土壤相互作用重点实验室,北京,100094;中国农业大学信息与电气工程学院,北京,100094 2. 中国农业大学资源与环境学院,教育部植物-土壤相互作用重点实验室,北京,100094 3. 中国农业大学信息与电气工程学院,北京,100094 |
| 基金项目： | 国家863高技术研究发展计划资助项目(2003AA209020) |
| 摘 要： | 采用微功率激光管作为光源，围绕被测样品旋转的硅光电池作为检测器，研制了一种可以测定植物单个叶片反射和透射光在入射面上分布的装置。分别在650 nm和830 nm波长光照条件下，测定了标准白板(参比样)的反射光和大叶黄杨树叶的反射和透射在入射面上的光强分布。测定结果表明该装置有很好的重现性。所研制的装置可用于植物冠层光辐射传输机理研究。 |
| 关 键 词： | 透射光 反射光 散射光分布 叶片 光辐射传输 |
| 文章编号： | 1002-6819(2005)09-0085-05 |
| 收稿时间： | 2005-04-18 |
| 修稿时间： | 2005-05-26 |
Design and evaluation of a new device for measuring scattering light distribution of leaf |
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| Lao Cailian,Li Baoguo,Guo Yan and Yan Tailai.Design and evaluation of a new device for measuring scattering light distribution of leaf[J].Transactions of the Chinese Society of Agricultural Engineering,2005,21(9):85-89. | |
| Authors: | Lao Cailian Li Baoguo Guo Yan and Yan Tailai |
| Abstract: | A device for measuring bidirectional reflectance and transmittance distribution of a leaf in the plane of incidence was designed with a micro-powered laser diode for illuminating and a silicon photocell detector rotating around sample for recording scattering light intensity from the sample. Illuminating by light source with wavelength of 650 nm and 830 nm, bidirectional reflectance from a white board (taken as reference) and bidirectional scattering (in reflectance and transmittance) from a leaf of evergreen euonymus (Euonymus japonicus Thumb.) in the plane of incidence were measured separately. The results showed that the device gave good measurement reproducibility. This device can be used in the research of radiant transfer of plant canopy. |
| Keywords: | transmitted light reflected light scattering light distribution leaf radiative transfer |
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