Data on tree size, competition and mistletoe occurence on whole trees

Data used in the article to test effects of tree size, neighbourhood competition and distance from nearest infected tree on probability of mistletoe infection on the whole trees (many of them multi-stem polycormons). Tree size is represented by basal area, mean stem basal area and the ranges of the trees/polycormons in given directions. Competition is represented by Hegyi competition index (CI_trees) calculated using basal areas of the whole trees and centres of trees/polycormons as positions. Infection by mistletoe is indicated by 1 = infected, 2 = not infected.本研究所用数据集用于检验树木尺寸、邻体竞争以及与最近感染寄主树的距离对整株树木（其中多数为多茎丛生株）的槲寄生感染概率的影响。树木尺寸通过基面积（basal area）、平均茎基面积以及指定方向上树木/多茎体的分布范围来表征。竞争程度采用赫吉竞争指数（Hegyi competition index, CI_trees）进行量化，该指数以整株树木的基面积以及树木/多茎体的中心位置作为计算参数。槲寄生感染状态以编码标识：1代表已感染，2代表未感染。