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650nm和830nm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。
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.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2005年第9期85-89,共5页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家863高技术研究发展计划资助项目(2003AA209020)
关键词
透射光
反射光
散射光分布
叶片
光辐射传输
transmitted light
reflected light
scattering light distribution
leaf
radtatlve transter
