Data for: How Should We Measure the DBH of Multi-Stemmed Urban Trees?

This dataset contains intensive measurements, as well as locational data, on 569 street trees in Philadelphia, PA, USA, taken in the summer of 2017, in the course of field research for the article “How Should We Measure the DBH of Multi-Stemmed Urban Trees?” Some base data (e.g., year and season of planting, cultivar) is from the Pennsylvania Horticultural Society's planting records of 2003-2015, from which the Target trees were drawn (cf. article for methodology).

The .xlsx file has two worksheets: the data itself, and an extensive metadata tab that explains each column’s contents. The trees themselves are from three genera (Malus, Prunus, and Zelkova); some trees’ cultivar is known (and noted in the dataset); others are unknown, and noted as such. The measurements include mm-accuracy stem diameters taken at a variety of heights (with all heights recorded to the nearest cm), total height and crown width in two directions, as well as a number of environmental and cultivation-linked variables (crown light exposure, vigor, soil dimensions and competing trees, pruning impacts, etc.).