Coarse Woody Debris on Watershed 6, Hubbard Brook Experimental Forest

Fallen dead wood was sampled in Watershed 6 (W6) of the Hubbard Brook
Experimental Forest in 1978, 1995, and 2016. Two techniques, one for
bolewood >3 cm in diameter and one for fallen twigs <3 cm and
> 2 mm, were combined to determine the mass of fallen dead wood in
the forest. The mass of deadwood in the forest remained unchanged over
time, although the species composition did change. 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.

1978年、1995年及2016年，研究人员于哈伯布鲁克实验林（Hubbard Brook Experimental Forest）6号集水区（Watershed 6, W6）采集枯倒木样本。本次研究采用两种采样方案：一种针对直径大于3厘米的干材，另一种针对直径小于3厘米且大于2毫米的枯落细枝，二者结合以测算该林区枯倒木的总质量。研究结果显示，尽管林区枯倒木的物种组成发生了变化，但其总质量并未随时间推移发生改变。本数据集作为哈伯布鲁克生态系统研究（Hubbard Brook Ecosystem Study, HBES）的一部分收集所得。HBES是由美国农业部林务局（USDA Forest Service）北方研究站（Northern Research Station）运营维护的哈伯布鲁克实验林合作研究项目。