Lab 2- Woodlot data set 3

This experiment was conducted in the woodlot at York University on September 23rd. We placed transect measuring tape from the edge of woodlot to center of woodlot, and walked a straight line. Every adult tree (thicker than hand held vertically at breast height) encountered, we recorded the distance from this tree to the next and recorded the diameter at breast height in inches for every tree using transect measuring tape. Furthermore the condition of the trees were observed as well, rating them from 0-2 (0=Dead, 1=Living, 2= Huge green canopy), this was done by forming a square with the fingers and holding it up to survey the canopy of the tree. This procedure was repeated 9 times to get a total of 10 parings.

本实验于9月23日在约克大学（York University）的林地内开展。我们布设样带卷尺（transect measuring tape），从林地边缘延伸至林地中心，并沿该直线行进。对于沿途遇到的每棵成年树木（胸径粗于竖直握持的手掌），我们记录该树与下一棵树之间的间距，并使用样带卷尺测量每棵树的胸径（diameter at breast height），单位为英寸。此外，我们还对树木的生长状况进行评级，评级区间为0-2（0代表枯立木，1代表存活木，2代表冠幅茂密的健壮大树），评级方式为用手指围成正方形框，对准树木树冠进行观测。本实验共重复该流程9次，总计获得10组配对样本。