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Walker Branch Throughfall Displacement Experiment

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North American Temperate Deciduous Forest Responses to Changing Precipitation Regimes

Part of the book series: Ecological Studies ((ECOLSTUD,volume 166))

Abstract

The Walker Branch Watershed (∼100 ha), located at 35°58′ N latitude and 84°17′ W longitude, is a part of the U.S. Department of Energy’s (DOE’s) National Environmental Research Park near Oak Ridge, Tennessee (Johnson and Van Hook 1989). Long-term (50-year) mean annual precipitation is 1352 mm, and mean annual temperature is 14.2°C. The soils are primarily Typic Paleudults derived from dolomitic bedrock. The soils are highly weathered and very deep (> 10 m) on ridge tops and therefore retain little evidence of their carbonate parent material. Plant-extractable water (water held between 0 and − 2.5 MPa) for the upper meter of soil is approximately 183 mm. A large fraction of this water (44%) is held in the upper 0.35 m of the soil profile, where 74% of all fine roots in the upper 0.90 m of the profile are located (Joslin and Wolfe 1998; Chapter 16, this volume). Depth to bedrock at this location is approximately 30 m (McMaster 1967), and deep rooting may be a source of some water.

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Authors
  1. Paul J. Hanson
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  2. Michael A. Huston
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  3. Donald E. Todd
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Editors and Affiliations

  1. Environmental Sciences Division, Oak Ridge National Laboratory, Bethel Valley Road, Building 1059, P.O. Box 2008, Oak Ridge, TN, 37831-6422, USA

    Paul J. Hanson  & Stan D. Wullschleger  & 

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Hanson, P.J., Huston, M.A., Todd, D.E. (2003). Walker Branch Throughfall Displacement Experiment. In: Hanson, P.J., Wullschleger, S.D. (eds) North American Temperate Deciduous Forest Responses to Changing Precipitation Regimes. Ecological Studies, vol 166. Springer, New York, NY. https://doi.org/10.1007/978-1-4613-0021-2_2

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  • DOI: https://doi.org/10.1007/978-1-4613-0021-2_2

  • Publisher Name: Springer, New York, NY

  • Print ISBN: 978-1-4612-6506-1

  • Online ISBN: 978-1-4613-0021-2

  • eBook Packages: Springer Book Archive

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