BIOL 2050 lab 2 data set - maple tree and sapling comparison

This experiment took place in the woodland lot at York University. Maple trees were the tree of choice for the measurements. A maple tree and the nearest sapling was chosen as a pair. A sapling was defined as a tree that is less than or equal to half of the observer's height (175 cm). The distance between the tree and the sapling was measured and recorded. The diameters of the tree and the sapling were measured by placing a transect at the observer's breast height. The canopy cover of the non-sapling was measured by approximating how much percent area the upper leaves and branches cover when the observer made a square shape with his hands and pointed it directly upwards.

本实验在约克大学（York University）的林地样地内开展。实验选取枫树作为目标测量树种，以单株枫树与其邻近幼树组成配对样本。本研究中将幼树定义为高度不超过观测者身高（175 cm）一半的树木。研究人员测量并记录了该枫树与幼树之间的距离。通过在观测者胸高位置布设样带（transect），分别测量该枫树与幼树的胸径。对于非幼树个体的冠层覆盖度，则由观测者双手摆出正方形并竖直指向天空，估算其上方叶片与枝条所占的面积百分比来完成测定。