Stem radial growth dynamics and anisotropy in Pinus radiata trees (Dec-Apr 2018, Rotorua, New Zealand).

This dataset contains 14 time series of stem radial displacement as measured at breast height in a group of six New Zealand-grown Pinus radiata D. Don. trees. Each stem was equipped with a minimum of two automatic point-dendrometers to characterize the anisotropy and the temporality of the radial growth process. The data was collected at Scion nursery in Rotorua at a 5-minute interval for 128 consecutive days in summer and early autumn of 2018. The data shows that there is a large variation in the seasonal growth increment depending on circumferential position in five out of the six tree specimens. Data also supports the general view that growth activity is synchronous within and across trees but also arrhythmic (i.e. frequently interrupted).

本数据集包含14组树干径向位移时间序列，数据采集自6株新西兰种植的辐射松（Pinus radiata D. Don）的胸高处。每株树干至少配备2台自动点式树木径向生长仪（automatic point-dendrometer），用于表征径向生长过程的各向异性与时间动态特征。本次数据采集于2018年夏季至初秋，在罗托鲁阿的Scion苗圃内完成，采样间隔为5分钟，连续采集时长共计128天。分析结果显示，6株样本树中有5株的季节生长增量随圆周位置存在显著差异。本数据集同时支持学界普遍认知：树木内部及不同树木间的生长活动具有同步性，但同时也存在节律紊乱（即生长过程频繁中断）的特征。