遇见数据集

Tree inventory data such as tree identity, position in the plot, height, architecture and biomass on Mt. Kilimanjaro

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Zenodo2024-11-01 更新2026-05-26 收录
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This dataset describes position and sizes of all trees above 10 cm diameter at breast height in all plots, also fruiting and flowering events and if it is a canopy tree or not in KiLi project. -999999 represents NA in numeric variables. Within each plot, all trees wider than 10 cm diameter at breast height (dbh) were marked with aluminium tags and their dbh and height were measured. The dbh was measured with a diameter tape (Forestry Suppliers, USA) at 1.3 m for normally shaped trees and 20 cm below or above when branches or irregular shapes impeded measurement at that height. The 1.3 m height was measured from the highest ground level around the stem to standardize measurements taken on slopes. For trees which were strongly buttressed or too big to measure by hand, a laser dendrometer (Criterion RD 1000 with TruPulse 200/200, Centennial, USA) was used to measure the tree above the buttresses and at 1.3 m. Lianas above 10 cm in diameter were also marked and their dbh was measured. Tree height was measured using an ultra-sonic hypsometer (Vertex IV Hypsometer, Haglöf, Langsele, Sweden) or a laser rangefinder (TruPulse 200/200). The tree inventories were carried out between December 2010 and March 2013. The KiLi project (2010-2018) is a German Science Foundation (DFG) funded research unit (DFG research unit FOR1246) that focuses on biodiversity and ecosystem processes along altitudinal and disturbance gradients on Mt. Kilimanjaro (Tanzania, Africa), capitalizing on its world-wide unique range of climatic and vegetation zones. The research unit comprises 2 central projects and 7 subprojects from various disciplines. On a total of 60 study sites in both natural and human-disturbed ecosystems biodiversity (e.g. plants, soil arthropods, ants, bees, frogs, lizards, bats, birds), related ecosystem processes (decomposition, seed dispersal, pollination, herbivory, predation), and biogeochemical processes and properties of ecosystems (climate, soil properties and nutrient status, regulation of water and carbon fluxes, trace gas emissions, primary productivity, functional diversity) are analyzed.

本数据集记录了KiLi项目(KiLi project)所有样地内所有胸径(diameter at breast height,dbh)大于10cm的树木的位置与尺寸信息,同时包含其结实、开花事件以及是否为冠层乔木的相关信息。数值型变量中的-999999代表缺失值(NA)。 在每个样地内,所有胸径大于10cm的树木均被安装铝制标签,并对其胸径与树高进行测量。对于形态正常的树木,使用直径卷尺(美国Forestry Suppliers公司出品)在1.3m高度处测量胸径;若树枝或不规则外形阻碍该高度的测量,则在1.3m高度上下20cm处进行测量。为统一坡地样地的测量标准,1.3m高度的基准点选取为树干周围的最高地面。对于具有明显板状根或尺寸过大无法手工测量的树木,则使用激光测径仪(美国Centennial公司出品的Criterion RD 1000搭配TruPulse 200/200)在板状根上方及1.3m高度处进行测量。直径大于10cm的藤本植物同样被标记并测量其胸径。树高测量采用超声波测高仪(瑞典Haglöf公司Langsele分厂出品的Vertex IV Hypsometer)或激光测距仪(TruPulse 200/200)。本次树木清查工作于2010年12月至2013年3月期间开展。 KiLi项目(2010-2018年)是由德国科学基金会(Deutsche Forschungsgemeinschaft, DFG)资助的研究单元(DFG研究单元FOR1246),其聚焦于非洲坦桑尼亚乞力马扎罗山沿海拔与干扰梯度的生物多样性及生态系统过程,依托该区域全球独一无二的气候与植被带分布特征开展研究。该研究单元包含2个核心项目与7个跨学科子项目。在自然及受人类干扰的生态系统中共设置60个研究样地,针对生物多样性(如植物、土壤节肢动物、蚂蚁、蜜蜂、蛙类、蜥蜴、蝙蝠、鸟类)、相关生态系统过程(分解、种子传播、传粉、植食作用、捕食作用)以及生态系统的生物地球化学过程与属性(气候、土壤特性与营养状况、水碳通量调控、痕量气体排放、初级生产力、功能多样性)展开分析。

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创建时间:
2024-10-14
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