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The effects of atmospheric deposition on potassium, calcium, and magnesium cycling in two deciduous forests

Publication ,  Journal Article
Johnson, DW; Richter, DD; Lovett, GM; Lindberg, SE
Published in: Canadian Journal of Forest Research
January 1, 1985

Sulfate was the dominant anion in throughfall and soil solutions from a chestnut oak (Quercus pinus L.) and a yellow poplar (Liriodendron tulipifera L.) forest in eastern Tennessee. Assuming much of this SO42- was of anthropogenic origin, cation-leaching rates from foliage and in soils of these forests would have to have been accelerated by acid deposition by two- to three-fold. This accelerated leaching could, in turn, cause changes in the rates of K+, Ca2+, or Mg2+ cycling according to any of a number of possible scenarios explored in this paper. Subsoils beneath the chestnut oak stand adsorbed SO42- from atmospheric deposition, which reduced SO42- mediated cation leaching to some extent. In contrast, subsoils from the yellow poplar stand showed a current net output of SO42- (perhaps desorbing sulfate adsorbed during previous periods of higher input) and much higher rates of cation leaching. The yellow poplar site showed net annual exports of Ca2+, Mg2+, K+, and Na+, but the chestnut oak site showed a net accumulation of Ca2+ and lower net annual exports of Mg2+ and K+ than the yellow poplar site. Both sites had inexplicably large net exports of Na+.

Duke Scholars

Published In

Canadian Journal of Forest Research

DOI

ISSN

0045-5067

Publication Date

January 1, 1985

Volume

15

Issue

5

Start / End Page

773 / 782

Related Subject Headings

  • Forestry
  • 07 Agricultural and Veterinary Sciences
  • 05 Environmental Sciences
  • 04 Earth Sciences
 

Citation

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Johnson, D. W., Richter, D. D., Lovett, G. M., & Lindberg, S. E. (1985). The effects of atmospheric deposition on potassium, calcium, and magnesium cycling in two deciduous forests. Canadian Journal of Forest Research, 15(5), 773–782. https://doi.org/10.1139/x85-127
Johnson, D. W., D. D. Richter, G. M. Lovett, and S. E. Lindberg. “The effects of atmospheric deposition on potassium, calcium, and magnesium cycling in two deciduous forests.” Canadian Journal of Forest Research 15, no. 5 (January 1, 1985): 773–82. https://doi.org/10.1139/x85-127.
Johnson DW, Richter DD, Lovett GM, Lindberg SE. The effects of atmospheric deposition on potassium, calcium, and magnesium cycling in two deciduous forests. Canadian Journal of Forest Research. 1985 Jan 1;15(5):773–82.
Johnson, D. W., et al. “The effects of atmospheric deposition on potassium, calcium, and magnesium cycling in two deciduous forests.” Canadian Journal of Forest Research, vol. 15, no. 5, Jan. 1985, pp. 773–82. Scopus, doi:10.1139/x85-127.
Johnson DW, Richter DD, Lovett GM, Lindberg SE. The effects of atmospheric deposition on potassium, calcium, and magnesium cycling in two deciduous forests. Canadian Journal of Forest Research. 1985 Jan 1;15(5):773–782.

Published In

Canadian Journal of Forest Research

DOI

ISSN

0045-5067

Publication Date

January 1, 1985

Volume

15

Issue

5

Start / End Page

773 / 782

Related Subject Headings

  • Forestry
  • 07 Agricultural and Veterinary Sciences
  • 05 Environmental Sciences
  • 04 Earth Sciences