森调新工具郁闭度测定器彤堂郁闭度是森林的主要调查团于之一，但长期以来一直没有测定工具。吉林省林科院森仪设备厂最近推出一种测定器，利用球冠镜聚影原理设计，由聚影镜、计点盘和底盘三部分组成。计点盘上绘有１６个方格和两套彩色点，１００个黄色点用于测定郁闭度... New tools for measuring forest canopy density Tong Ting Tong closure is one of the main forest survey team, but has long been no measurement tool. Linyi Institute of Forest Science and Technology, Jilin Province plant recently introduced a measuring device, the use of the principle of the ball crown lens polygamy design, from the polygon mirror, the point of the plate and chassis composed of three parts. There are 16 squares and two sets of color dots on the counting plate. 100 yellow dots are used to determine canopy density.