期刊
FOREST SCIENCE
卷 -, 期 -, 页码 -出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/forsci/fxad032
关键词
soil carbon; forest harvest; partial harvest; thinning; forest soil disturbance; carbon sequestration
类别
Harvesting activities can affect forest floor carbon pools, and the impact depends on the intensity of the harvest. A study was conducted in Vermont, USA to examine the effects of partial harvesting on the forest floor. The results showed that partial harvesting did not significantly alter the carbon stock, but there were changes in thickness and density of the forest floor.
Harvesting activities are known to decrease forest floor carbon pools, but the response varies with harvest intensity. We examined partial harvesting (33-55% of basal area removed) effects on the forest floor at four northern hardwood sites in Vermont, USA. Six baseline quantitative samples were taken at each site and 9-36 new locations were sampled 1.5-2.6 years after harvesting. Forest soil disturbance was estimated, and basal area was tallied pre- and post-harvest. The forest floor consisted primarily of Oi and Oe horizons. The pre-harvest site means in carbon stock ranged from 6.8 to 12.3 Mg ha(-1) and were not significantly different after harvesting. The pre-harvest site means in depth ranged from 2.8 to 4.5 cm and, post-harvest, there was significantly decreased thickness at one site and significantly greater density at two sites postharvest. This compaction was also visually observed in the field. Partial harvesting, which included single-tree and group selection, created highly variable conditions that challenged our experimental design. However, the two sites with the higher number of resampling locations (35-36) had relatively low variability in forest floor metrics and showed significant responses in thickness and density. Continued monitoring is needed to determine long-term trends.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据