Tree-ring measurements from permanent plot in old-growth hemlock-hardwood forest, Huron Mts., MI

This package includes tree growth-ring widths for increment cores collected from a long-term 'macroplot' established in old-growth hemlock-northern hardwoods forest at the Huron Mts. of northern MI. Tree demographic monitoring data for the entire ca. 3.0 ha macroplot are available in the EDI package edi.1416.1. In 1994 and 1995, increment cores were taken for all 'core-able' trees greater than ~ 10 cm diameter for a subsection of the macroplot about 1 ha in area, along with some additional Tsuga canadensis trees beyond that 1 ha section. Cores are NOT cross-dated. See Methods for more details. This data-package may be cross-referenced to the demographic data in edi.1416.1 using stem numbers.

本数据集包含采自美国密歇根州北部休伦山脉（Huron Mts.）老龄铁杉-北部硬木林内长期设立的大样地（macroplot）所采集的树木生长样芯（increment core）的年轮宽度数据。该大样地整体（约3.0公顷）的树木种群监测数据可于EDI包（EDI package）edi.1416.1中获取。1994年与1995年间，研究人员针对该大样地中约1公顷的子区域内所有直径大于约10厘米的可采集样芯树木，以及该1公顷区域外的部分加拿大铁杉（Tsuga canadensis）植株，采集了树木生长样芯。本次采集的样芯未进行交叉定年（cross-dating），详细信息请参见方法部分。本数据包可通过茎杆编号（stem number）与edi.1416.1中的种群监测数据进行交叉对照。