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Fine root biomass, distribution, and production in young pine-hardwood stands

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Abstract

Patterns of fine root biomass, production, and distribution were estimated for pure stands and mixtures of three-year-old loblolly pine (Pinus taeda L.) with red maple (Acer rubrum L.) or black locust (Robinia pseudoacacia L.) on the Virginia Piedmont to determine the role of fine roots in interference between pine and hardwood tree species. Estimates were based on amounts of live and dead fine roots separated from monthly core samples during the third growing season after planting. Live and dead fine root biomass and production varied by species, but mixtures of loblolly pine and black locust generally had greater fine root biomass and fine root production than pure stands or loblolly pine-red maple mixtures. Hardwood species had greater live fine root biomass per tree in mixtures with pine compared to pure stands. Greater live fine root biomass in pine-locust stands may be attributed to differential utilization of the soil volume by fine roots of these species. For all stands, approximately 50% of live five root biomass was located in the upper 10 cm of soil.

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Authors and Affiliations

  1. Department of Forestry, Virginia Polytechnic Institute, 24061, Virginia, USA

    Todd S. Fredericksen & Shepard M. Zedaker

  2. State University Blacksburg, 24061, Virginia, USA

    Todd S. Fredericksen & Shepard M. Zedaker

Authors
  1. Todd S. Fredericksen
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  2. Shepard M. Zedaker
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Fredericksen, T.S., Zedaker, S.M. Fine root biomass, distribution, and production in young pine-hardwood stands. New Forest 10, 99–110 (1995). https://doi.org/10.1007/BF00034178

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  • DOI: https://doi.org/10.1007/BF00034178

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