Techniques and data: Woodlot Dataset 3

In order to obtain information, data was recorded from an area within a woodlot, where there was an abundance of densly populated trees. By using a transect measuring tape, all continuous data was recorded. Every instance an adult tree was encountered (which was deemed to be adult by having a diameter of at least a hands width), it was paired with another adult tree closest to it in any direction along the transect. The distance from each pair of tree was recorded using a measuring tape (inches). Following this, the diameter of each tree was recorded roughly by using the measuring tape and measuring the trees diameter (inches) at chest height. Finally, each tree under examination was to be rated on a scale from 0-2, with 0 being a dead tree, 1 being a living tree and 2 being a flourishing tree with a full canopy of leaves. These steps were to be repeated for 10 different pairs of adult trees. A tree was deemed to be dead if it contained all dead or dying leaved, missing branches and decaying. A living tree was deemed to have living green leaves as well as some dead foliage. A fully flourishing tree showed a full canopy of leaves, no decaying or dead leaves and no missing branches. Some restrictions for this data was to make sure to only measure adult trees and not saplings.

为获取研究所需数据，本研究于树木茂密的林地内划定采样区域开展数据采集工作。采用样带卷尺完成所有连续性数据的记录。每遇及一株成年树木（判定标准为胸径至少达到一掌宽度），即沿样带任意方向选取距离其最近的另一株成年树木进行配对。使用卷尺测量每对树木之间的距离，单位为英寸（inches）。随后，使用卷尺于胸高位置粗略测量每株树木的胸径，单位为英寸（inches）并完成记录。最后，对每株待测树木按照0-2三级评分标准进行评级：0代表枯死亡树，1代表存活树木，2代表冠幅饱满、生长旺盛的健康树木。上述流程需针对10组不同的成年树木配对重复执行。枯死亡树的判定标准为：叶片全部枯死或萎蔫、枝条缺失且存在腐朽现象。存活树木的判定标准为：具有鲜活的绿色叶片，同时伴随少量枯败枝叶。生长旺盛的健康树木则具备饱满完整的冠幅，无腐朽或枯败叶片，且无枝条缺失情况。本次数据采集的约束条件为：仅对成年树木进行测量，不得纳入幼树（saplings）。