人工同龄纯林冠层辐射场模拟模型I 理论计算  

A CANOPY RADIATION MODEL FOR EVEN-AGED PLANTATIONS Ⅰ. THEORETICAL CALCULATIONS

作　　者：张小全[1] 徐德应[1] 

机构地区：[1]中国林业科学研究院森林生态与环境研究所,北京100091

出　　处：《植物生态学报》2001年第5期609-615,共7页Chinese Journal of Plant Ecology

基　　金：国家自然科学基金资助项目"杉木人工林光合作用尺度转换研究"(编号 :39770 5 96 )

摘　　要：充分考虑坡地人工林冠层结构特征和叶面积空间分布的异质性 ,分别相邻树冠遮荫和目的树冠遮荫对树冠内辐射场的影响 ,建立的人工林冠层辐射场模型 ,可模拟树冠内任意点 ,在一年内任一时刻内的辐射及其直接和散射分量 ,以及以 1h为步长的日总辐射等 。A simulation model of canopy radiation was developed for the calculation of within-and between-tree shading. The model accounts for the canopy structure of an even-aged plantation on a sloping site and heterogeneity of leaf area density within tree crowns. It can be used to simulate instantaneous radiation at any point within crowns, the direct, diffuse and scattered fractions as well as daily radiation within 1 hour time steps. Canopy photosynthetic productivity can also be simulated with the radiation model.

关 键 词：同龄人工林 冠层 辐射场 模型 模拟 

分 类 号：S711[农业科学—林学]