叶片的光反射和光透射。
Reflectance and transmittance of light by leaves.
机构信息
Soil and Water Conservation Research Division, Agricultural Research Service, United States Department of Agriculture, and Department of Agronomy, University of Illinois, Urbana, Illinois 61801.
出版信息
Plant Physiol. 1971 May;47(5):656-62. doi: 10.1104/pp.47.5.656.
Spectrophotometric transmittance and reflectance curves were recorded for wavelengths from 0.45 (in some cases 0.34) to 2.7 micrometers for faces and backs of leaves and for stacked leaves of several plant species. Measurements were made at different angles of illumination. Leaf spectrophotometric curves were compared with curves for leaf extracts, potato tuber tissue, glass beads in water, and frozen leaves to demonstrate the physical bases for the leaf curves. Leaves were infiltrated with liquids of different refractive indices for further comparison of spectrophotometric curves. Goniophotometric reflectance curves were recorded, giving visible reflectance and degree of polarization as functions of viewing angle for two different angles of illumination.No retroreflection was observed, and no phenomena were observed which could be attributed to interference because of similarity between leaf structural sizes and wavelengths used.
记录了叶片正面和背面以及几种植物叶片叠层的 0.45 （在某些情况下为 0.34）至 2.7 微米波长的分光光度透射率和反射率曲线。在不同的照明角度进行了测量。将叶片分光光度曲线与叶片提取物、土豆块茎组织、水中玻璃珠和冷冻叶片的曲线进行比较，以证明叶片曲线的物理基础。为了进一步比较分光光度曲线，用不同折射率的液体对叶片进行了渗透。记录了 2 种不同照明角度的掠入射反射率曲线，给出了可见反射率和偏振度作为视场角的函数。没有观察到后向反射，也没有观察到由于叶片结构尺寸和使用波长相似而导致的干涉现象。
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