Relationship between adult tree and sapling in Danby woodlot

This lab was done at Danby woodlot located at York University. The class was divided into groups of 4 or 5. My group members are Jordan Deosamy, Mandy Huynh and Dylan Stoll. Before the lab began a particular specie of tree had to be chosen. Maple was picked because it was the most common one. 10 adult maple trees with saplings beside them were selected at random. The distance between the adult maple tree and the sapling was measured for the 10 trees using a transect. The transect was laid out from the adult tree to the sapling. This was measured in feet. After that the DBH (Diameter at breast height) was measured for both the adult tree and sapling also using a transect. The transect was put at chest level of the adult tree trunks and sapling (depending on the height). This was done for all 10 adult trees and saplings. It was measured in inches. Finally the canopy coverage was measured by using fingers to make a square and holding it up to make an estimate depending on how much sky could be seen from between the leaves of the adult tree. This was estimated in percentage. The purpose of finding the distance between the adult tree and sapling is to see if there is a relationship between the sapling and adult tree. The canopy coverage was taken to see how much effect tree coverage has on the environment. The environmental condition during the lab was cool.本实验于约克大学（York University）的丹比林地（Danby Woodlot）开展。实验将班级划分为4至5人一组的实验小组，本人所属小组的成员为Jordan Deosamy、Mandy Huynh与Dylan Stoll。实验启动前需选定目标树种，最终因枫树为该区域最常见树种而被选中。我们随机选取了10株旁带幼苗的成年枫树，采用样带（transect）测量每株成年树与对应幼苗间的距离：从成年树向幼苗布设样带，测量结果以英尺为单位记录。随后，我们同样使用样带测量了成年树与幼苗的胸径（DBH，Diameter at Breast Height）：将样带置于成年树干与幼苗的胸部高度位置（依植株实际高度调整），针对全部10组样本完成测量，测量值以英寸为单位记录。最后，我们通过手动搭建方形指框并将其对准成年树的树冠间隙，估算可见天空占比以获取冠层覆盖度数据，以百分比为单位完成估算。本次实验的核心目标有二：其一，探究成年枫树与幼苗间的距离是否存在相关性；其二，通过测量冠层覆盖度，分析林木覆盖对周边环境的影响程度。实验开展期间环境温度偏低。