HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Kelly, J. M. Search for Related Content PubMed Articles by Kelly, J. M. Agricola Articles by Kelly, J. M.

Power Plant Influences on Bulk Precipitation, Throughfall, and Stemflow Nutrient Inputs¹

ABSTRACT

Inputs of SO₄^2–, total N, PO₄^3–, K, Ca, and Mg via bulk precipitation, throughfall, and stemflow have been investigated over a 3-yr period at two forest study sites on the Cumberland Plateau of Tennessee. The Cross Creek Watershed located 19 km from the Widows Creek coal-fired power plant was used to represent inputs to a forest site in the immediate vicinity of a large emissions source. The Camp Branch Watershed having similar forest cover and soil types, but located in an area 99 and 76 km from the nearest major point sources, was used to represent inputs as a function of regional conditions. Location exhibited its greatest influence on stemflow inputs, with only PO₄^3– and K failing to exhibit a statistically significant (P = 0.05) increase in stemflow input at Cross Creek relative to Camp Branch. Although throughfall SO₄^2–, K, Ca, and Mg input values were higher at Cross Creek, they were not significantly higher than the Camp Branch values. Nitrogen and phosphate throughfall input values were lower at Cross Creek than Camp Branch, but again lacked statistical significance. Nitrogen and phosphate in bulk precipitation were significantly elevated at Cross Creek while other elements and compounds did not respond to location. Based on this evaluation most atmospheric contributions to bulk precipitation, throughfall, and stemflow elemental inputs appear to be of regional rather than local origin.

Key Words: sulfate • nitrogen • phosphate • potassium • calcium • magnesium

¹ This work conducted as part of the Federal Interagency Energy/Environment Research & Development Program with funds administered through the Environ. Protection Agency (EPA Contract no. EPA-1AG-D6-0721, TVA Contract no. TV-41967A).

² Project Manager, Tennessee Valley Authority, Div. of Air & Water Resources, TVA/ORNL Watershed Study Program, Building 1505, ORNL, Oak Ridge, TN 37831.

Received for publication July 22, 1981.

This article has been cited by other articles:

				J. M. Kelly and P. A. Mays SOIL CARBON CHANGES AFTER 26 YEARS IN A CUMBERLAND PLATEAU HARDWOOD FOREST Soil Sci. Soc. Am. J., April 11, 2005; 69(3): 691 - 694. [Abstract] [Full Text] [PDF]