Distribution and Abudance of trees in woodlot - lab 2

The purpose of this experiment was to quantitatively determine tree species distribution and abundance in an environment using random sampling as well as look at physical characteristics. My partner Phaeba and I compared distances, conditions and diameter of 10 adult trees in the woodlot of York University. The first adult tree encountered on the left side when walking straight into the woodlot was used to collect data. The second tree used to collect data was the one directly in front of the first and was also used as a reference point to collect data for the remainder of the trees. All data collected for the remainder of the trees were the first ones encountered when walking straight in front of tree 2 and into the middle of the woodlot. Consistency and reliability were accounted for because of this. The experiment was carried out on September 25, 2015 at approximately 4:07PM with weather being around 20 degrees Celsius. The experiment was done at approximately 4:50PM. Transect measuring tape was used to collect data. For the first two pairs of trees, there were a lot of garbage and dead leaves on the ground. The sky was clear and there were a small amount of vegetation on the ground. Going further into the middle of the wood lot to collect the remainder of data, it was chillier and it was less sunny. There were less garbage on the ground, acorns and more vegetation on the ground.

本实验旨在通过随机抽样法定量测定某环境中树木的物种分布与丰度，并观测其物理特征。我与搭档Phaeba对约克大学（York University）林地内的10株成年树木的间距、生长状况及直径进行了对比测量。实验选取径直进入林地时左侧遇到的第一株成年树木作为首个数据采集对象；第二株数据采集对象为第一株正前方的树木，并将其作为参考点，用于后续其余树木的数据采集。后续其余树木的数据均采集自以第二株树为起点、径直向前行走至林地中部时遇到的第一株树木，此举保障了实验的一致性与可靠性。实验于2015年9月25日约下午4时07分启动，当时气温约为20摄氏度，整套实验于当日约下午4时50分完成。数据采集使用了样带卷尺（Transect measuring tape）。前两组树木所在区域地面存在大量垃圾与枯叶，天空晴朗，地面植被较少。向林地中部深入采集其余数据时，气温更低且光照减弱，地面垃圾减少，同时橡果与地面植被数量增多。