Tree Core Increment Data, Watershed 4, Hubbard Brook Experimental Forest, 1985-1986

Time series of annual tree ring increments were collected on Watershed 4 during the winter of 1985-1986 for trees of four species: beech, white ash, yellow birch, and sugar maple. The purpose of the study was to compare these time series with a selection of measured and derived environmental variables to develop a more sensitive model of tree diameter growth. These data were gathered as part of the Hubbard Brook Ecosystem Study (HBES). The HBES is a collaborative effort at the Hubbard Brook Experimental Forest, which is operated and maintained by the USDA Forest Service, Northern Research Station.本数据集包含1985-1986年冬季于4号流域采集的4个树种的年度树木年轮增量序列，涉及树种分别为山毛榉（beech）、白蜡树（white ash）、黄桦（yellow birch）及糖枫（sugar maple）。本研究旨在将上述时序序列与一组实测及衍生环境变量进行对比，以构建灵敏度更高的树木直径生长模型。本数据集作为哈伯布鲁克生态系统研究（Hubbard Brook Ecosystem Study, HBES）的组成部分采集所得。哈伯布鲁克生态系统研究是依托哈伯布鲁克实验林开展的协同研究项目，该实验林由美国农业部林务局北部研究站运营维护。