Fine root biomass, productivity and turnover in two contrasting aspects in natural Chir Pine (Pinus roxburghii Sarg.) forests of Central Himalaya

Fine root biomass, productivity and turnover in two contrasting aspects in natural Chir Pine... Fine roots (≥1 mm) production in Chir Pine (Pinus roxburghii Sarg.) forests was estimated across three different seasons for one year at four sites located between 1600–1850 meters elevation on two contrasting aspects. At each site three different slope positions (ridge slope, mid hill slope and hill base) were selected for the study. The tree density across the study sites ranged between 390 to 1910 tree/ha–1. The fine root biomass and productivity was estimated upto 40 cm soil depth. The total fine root biomass ranged between 3.34 and 3.72 t ha–1 across southern aspect while it ranged between 2.70 and 2.94 t ha–1 across northern aspect. Across the studied forest the NPP ranged between 1.02 and 2.2 t ha–1yr–1 and total turnover ranged between 0.52 and 0.96 yr–1.The fine root biomass declined as the soil depth increased and varied significantly (P < 0.001) across the soil depths and seasons. The fine root net primary production was positively correlated (P < 0.001) with soil organic carbon (t ha–1) and showed an inverse relationship with soil moisture percent and soil bulk density (g/cc). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Ecology Springer Journals

Fine root biomass, productivity and turnover in two contrasting aspects in natural Chir Pine (Pinus roxburghii Sarg.) forests of Central Himalaya

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Publisher
Springer Journals
Copyright
Copyright © 2015 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Ecology; Environment, general
ISSN
1067-4136
eISSN
1608-3334
D.O.I.
10.1134/S1067413615060041
Publisher site
See Article on Publisher Site

Abstract

Fine roots (≥1 mm) production in Chir Pine (Pinus roxburghii Sarg.) forests was estimated across three different seasons for one year at four sites located between 1600–1850 meters elevation on two contrasting aspects. At each site three different slope positions (ridge slope, mid hill slope and hill base) were selected for the study. The tree density across the study sites ranged between 390 to 1910 tree/ha–1. The fine root biomass and productivity was estimated upto 40 cm soil depth. The total fine root biomass ranged between 3.34 and 3.72 t ha–1 across southern aspect while it ranged between 2.70 and 2.94 t ha–1 across northern aspect. Across the studied forest the NPP ranged between 1.02 and 2.2 t ha–1yr–1 and total turnover ranged between 0.52 and 0.96 yr–1.The fine root biomass declined as the soil depth increased and varied significantly (P < 0.001) across the soil depths and seasons. The fine root net primary production was positively correlated (P < 0.001) with soil organic carbon (t ha–1) and showed an inverse relationship with soil moisture percent and soil bulk density (g/cc).

Journal

Russian Journal of EcologySpringer Journals

Published: Oct 24, 2015

References

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