The dataset for 10 randomly selected adult Staghorn Sumac followed by the nearest sapling in the Saywell Woodlot at York University

A dataset of 10 randomly selected adult Staghorn Sumac collected at the edge of the Saywell Woodlot located on York University Keele Campus (Monday September 21st, at approximately 4:00 pm). Weather conditions during that time were slightly cloudy and around 19 degrees celsius. The following measurements were recorded: (i) the dbh of the adult Staghorn Sumac, (ii) an estimation of the canopy coverage, (iii) distance to the nearest sapling, and (iv) sapling dbh. All measurements were recorded using a transect measuring tape. The experimenter would begin by selecting an adult tree, which was identfied based on the height of the tree (over 6 feet). Dbh was then recorded at chest level of the experimenter. Canopy coverage was recorded by having the experimenter make a square with their fingers and estimating how much sky can be seen. Once all measurements of the adult tree was recorded, the experimenter would then proceed to the nearest sapling. Trees with a smaller height than the same experimenter were considered as saplings. Measurements were taking from the center of the adult trunk to the center of the sapling trunk. Dbh was then recorded at the center of the trunk. The steps were repeated until 10 adult trees had been selected. All measurements were taken from the same experimenter to ensure consistency. Estimations were based on the experimenter's own judgement.本数据集包含10株随机选取的成年鹿角漆（Staghorn Sumac），采集自约克大学基尔校区内的塞维尔林地（Saywell Woodlot）边缘，采集时间为9月21日周一下午约4时。当日采集时段天气为轻度多云，气温约19摄氏度。本次记录的测量指标包括：(i) 成年鹿角漆的胸径（dbh）；(ii) 冠层覆盖率估算值；(iii) 与最近幼树的距离；(iv) 幼树的胸径（dbh）。所有测量均采用样带卷尺完成。实验者首先选取成年树木，判定标准为树高超过6英尺。随后在实验者胸高位置测量该树的胸径。冠层覆盖率通过实验者用手指围成正方形，估算该正方形内可见天空占比的方式进行记录。完成单株成年树的全部测量后，实验者前往其距离最近的幼树，其中树高低于实验者身高的树木被归类为幼树。两者的距离以成年树干中心至幼树干中心的直线距离为准，并在幼树的树干中心位置测量其胸径。重复上述步骤，直至累计选取满10株成年鹿角漆。为保证测量一致性，所有数据均由同一位实验者完成采集，所有估算值均基于实验者的主观判断。