四川盆地浅丘陵区农林复合系统内部天空散射辐射分布特性理论分析  

A Theoretic Analysis of Distribution Characteristics ol Diffuse Sky Radiation In Agroforestry Systems in Hilly Regions in the Sichuan Basin

作　　者：费世民[1] 汪万江[1] 

机构地区：[1]四川省林业科学研究院

出　　处：《四川林业科技》1993年第2期11-15,共5页Journal of Sichuan Forestry Science and Technology

摘　　要：根据四川盆地浅丘区农林复合系统特点,从理论上分析了该系统内天空散射辐射令布特征。提出了在林带和地形(坡度变化)的双重影响下的林带间平均相对辐照成分布特征,为农林复合系统的设计提供了依据;除林带本身产生“光胁地”外,地形变化即坡度的增加,叶“光胁地”效应有增强作用,对其范围有扩大作用。According to the characteristics of agroforestry systems in hilly regions in the Sichuan Basin, a theoretic analysis is given to the distribution features of diffue sky radiation in these systems. The results have shown the distribution characteristics of average relative irradiation in forest belts under the influence of both forest belt and terrain(i. e. variation in slope) ,which provides scientific basis for the design of agroforestry systems. Excepting that forest belt themslves give rise to sheltered areas, variation in topography,i. e. increasement of slope,will strengthen the effect of sheltered areas and extend the range of these areas.

关 键 词：辐射 分布特征 农林复合系统 

分 类 号：S718.45[农业科学—林学]