Woodlot Data Set 4 Lab02

BIOL2050 Lab 02. This experiment was conducted in the Danby Woodlot at York University on 22nd September 2015 between 4:00-4:38 pm with team members: Bryson Chandrarajan, Stanley Igiebor and Sharan Saravanabavan. The temperature was 22°C, clear skies with a cool breeze. Due to the canopy coverage there was very little sunlight in the Woodlot. Adult trees were chosen at random in the Danby woodlot and their DBH (Diameter at Breast Height) was measured in inches using the measuring tape, from one end of the trunk to the other, keeping the tape straight. Then saplings of the same species nearest to the adult trees were located. The distance between the sapling and the adult tree was measured using the measuring tape, from the edge of the sapling to the edge of the adult tree. Then the DBH of the saplings were recorded using the measuring tape, from one end of the trunk to the other, keeping the tape straight. The canopy coverage was estimated in percentage by forming a square with fingers and holding it up and estimating how much sky is visible. The canopy coverage percentage sometimes exceeded 100% as a result of overlapping layers of the leaves and branches.

BIOL2050 实验2。本实验于2015年9月22日下午4:00至4:38，在约克大学（York University）的丹比林地（Danby Woodlot）开展，参与团队成员包括Bryson Chandrarajan、Stanley Igiebor及Sharan Saravanabavan。当日气温为22℃，天气晴朗且伴有凉爽微风。受林冠覆盖影响，林地内日照极少。研究人员在丹比林地中随机选取成年树木，使用卷尺保持拉直状态，沿树干两端测量其胸径（DBH, Diameter at Breast Height），测量单位为英寸。随后定位紧邻该成年树木的同种幼树，使用卷尺从幼树树干边缘至成年树木树干边缘，测量二者间距。接着以相同方式使用卷尺测量并记录幼树的胸径。研究人员通过双手摆出正方形框架并举起，估算可见天空占比以获取林冠覆盖率百分比；由于叶片与枝条存在重叠层，林冠覆盖率百分比有时会超过100%。