Stand and Soil Changes Along A Mountain Hemlock Death and Regrowth Sequence
作者： Richard D. Boone , Phillip Sollins , Kermit Cromack
DOI: 10.2307/1941019
关键词:
摘要: Stand characteristics, dead wood, and soil carbon (C) nitrogen (N) pools were measured through a wave-regenerated sequence of mountain hemlock death regrowth created by Phellinus weirli. Stem density increased along the 96-yr sequence, but was low in 225-yr-old, mature stand. Total ecosystem C (TEC) dropped upon stand did not recover. Net production (NEP) negative just after zero thereafter. The 02 horizon forest floor (01 + 02) had greater mass, organic matter, N capital than bare or zones. From to zone, forest-floor matter decreased 27% 24%. forest- decrease offset an equal increase mineral at 0-15 cm depth. Mineral-soil C, as well for sum soil, constant across sequence. C/N ratio peaked 01 material, reached its minimum fine roots, zone.
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