Condition of Close Tree Pairs

A dataset looking at the distance between trees, diameter at breast height, and conditions of pairs of trees in close proximity to each other in Danby woodlot on campus at York University.Researchers walked from the outskirts of a woodlot and collected data from the first sighted tree and it's closest pair. Distance between trees were measured by transect measuring tape, from the closest edge of each pair of trees. Diameter of each tree was also measured by transect measuring tape held at a tangent at a height of approximately 110cm. Distance and diameter were both measured in centimeters (converted from meters) while the condition of the trees were simply eyed. Researchers repeated this ten times for ten pairs of trees, each time moving in a straight line deeper into the woodlot. The outskirts of the woodlots are more clear, and trees are a fair distance apart, whereas further in the trees grow more densely packed. This can be seen in the dataset which was recorded on paper at the time.本数据集旨在采集约克大学（York University）校园内丹比林地（Danby woodlot）中相邻树木对的间距、胸径（diameter at breast height）以及生长状况相关数据。研究者从林地外缘出发，对首次观测到的单株树木及其最近邻配对树木开展数据采集。树木间距采用样带卷尺（transect measuring tape）测量，测量点位为每对树木的最近边缘处。单株树木的胸径同样使用样带卷尺，在约110厘米高度处沿切线方向测得。所有距离与直径数据均以厘米为单位（由米制单位转换而来），树木生长状况则通过目视评估完成。研究者沿直线向林地深处行进，针对十组树木对重复上述采样流程，共计完成十次数据采集。林地外缘区域视野通透，树木间距较大；而深入林地内部后，树木生长更为密集。这一分布特征可在当时纸质记录的本数据集中得到体现。