【摘要】 本文通过对森林边缘效应类型的划分及单层次和多层凌空辐射模型的建立,从理论上对森林边缘效应(Forest edge affect)做了初步研究,并从提高光能利用效率和增加单位面积生产力的角度出发,把边缘效应理论与林业生产紧密结合起来,为摆脱林业“两危”的困境提出了两种切实可行的模式。 (1)利用边缘效应理论,开展群落优化结构,定向培育速生丰产林。 (2)根据效应带(Effect belt)配置理论,模拟自然,人工开拓效应带,对生产力低下的天然次生林进行合理改造,建立人工天然混交群落结构模式。更多还原

【Abstract】 Researches and analysis were carried on the theory of forest edge effect by classification of its types in forest ecosystem and establishing of light radiation model in single or multi-storied space type. Two kinds of practical models were put forwardto extricate forestry from "Two Crisises" and increase utilization efficiency of solar energy and net primary productivity on unit area by combination forest edge effect theory with forestry production. (1) Cultivating fast growth and high productivity plantation directionally in optimal community structure by use of forest edge effect theory. (2) Estabiishing artificial-natural compound forest community by opening up effect belts.更多还原