标题：Effect of harvest intensity and soil moisture regime on the decomposition and release of nutrients from needle and twig litter in northwestern Ontario
摘要：A four-year fine litter decomposition study was established at black-spruce dominated forest sites following harvesting that included a range of biomass removals (uncut stand, stem only, full-tree, and full-tree + bladed). The current study was designed to address the following questions: (1) does an increase in biomass removal alter the decomposition rates and nutrient release in fine litter, and (2) do these patterns differ across site types that vary in soil moisture regime? Orthogonal contrasts revealed that: (1) conditions following harvesting (all biomass removal treatments combined) slowed the decomposition of both needle and twig material as compared with that of the uncut controls, (2) removal of the forest floor further reduced needle decomposition as compared with the other harvest treatments, and (3) decomposition rates did not differ between stem-only and full-tree harvest treatments. The wet mineral sites showed a more rapid rate of decomposition within the first two years.
