摘要
林隙生态机理已成为现代森林生态学研究的热点，尤其是林隙内光照条件的变化对树种更新和生长具有重要的生态效应。但是、由于林隙结构极为复杂，难以精确地测量林隙上方和周围树冠空隙的透光情况。为此，本文应用鱼眼全景摄影方法拍摄了林隙结构的全景图象，建立了在像片上直接计算林隙遮蔽效应的数学模型，并在林隙全景像片上绘制出太阳视轨道，就可以定量和直观地表述林隙内日照条件的变化规律。
The ecological effects of canopy gap on tree species have received much attention in the study of modern forest ecology.However,because of difficulties in measuring light attenuation in canopy gap and complex structure of forest canopies.Therefore,fish-eye photography was used to determine the hemispherical canopy photographs, and a mathematical model was used to calcutate the shading effects of tree canopy around gap Through comparing the track of sun that was draw on the hemispherical canopy photograph.the light regimes in gap was determined.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1994年第6期30-36,共7页
Journal of Northeast Forestry University
基金
黑龙江省自然科学基金
