关于树冠采光面积系数的思考

Thinking on Crown Lighting Area Index

围绕着树木光合作用,根据乔木树冠特点,深入研究树冠采光面积系数这一新概念。认为树冠采光面积系数,与叶面积系数一样,都是绿色植物光能利用效率的反映,但前者比后者更加符合客观实际,更为实用,也便于测定。树冠采光面积系数,系指树冠采光面积和土地面积的比值,是树木生产潜力的重要标志之一。它随着树冠长度增大而增加,随着树冠幅度增大而减小。为此,通过合理的修枝修剪技术措施,为乔木塑造一个理想的树冠冠型和形状,以寻求树冠采光面积系数的最大值或较大值,从而提高林木的生物产量,充分发挥乔木树种高度优势及其空间效益。

Around the photosynthesis of trees,according to the characteristics of tree crown,the new concept of crown lighting area index was deeply studied.Crown lighting area index and leaf area index were a reflection of solar energy utilization efficiency of green plants.However,the former was more in line with the objective reality than the latter,more practical,and also facilitate for the determination.Crown lighting area index was the ratio of the crown lighting area and land area and one of the important symbo...