植被方向散射系数及双向散射系数的理论计算

THEORETICAL CALCULATION OF DIRECTIONAL AND BIDIRECTIONAL SCATTERING COEFFICIENTS OF A VEGETATIVE CANOPY

根据植被组分的光学特性及植被的形态结构,考虑入射线和出射线的方位角,对植被的方向散射系数和双向散射系数进行了理论推导,给出了解析表达式,并进行了论证.其结果补充了Goudriaan及Verhoef的不足之处,并将Suits的结果作为一种特例包含在内.

According to the optical and structural characteristics of the components of a vegetative canopy, the directional and bidirectional scattering coefficients of the canopy are derived and discussed theoretically, with the azimuth angles of incoming light vector and exiting light vector being considered. The results extend Coudriaan's calculations and in- clude Suit's conclusions as a special case.