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Title: Carbon and nitrogen pools in oak-hickory forests of varying productivity
Author: Kaczmarek, Donald J.; Rodkey, Karyn S.; Reber, Robert T.; Pope, Phillip E.; Ponder, Felix, Jr.
Publication: In: Gottschalk, Kurt W.; Fosbroke, Sandra L. C., ed. Proceedings, 10th Central Hardwood Forest Conference; 1995 March 5-8; Morgantown, WV.: Gen. Tech. Rep. NE-197. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 79-93
Abstract: Carbon (C) and nitrogen (N) storage capacities are critical issues facing forest ecosystem management in the face of potential global climate change. The amount of C sequestered by forest ecosystems can be a significant sink for increasing atmospheric CO2 levels. N availability can interact with other environmental factors such as water availability or temperature to control potential forest productivity. This in turn, may determine the amount of C that can be sequestered in forest ecosystems. This study was designed to quantify C and N pools in oak-hickory dominated forest stands of varying productivity. Sites selected were second-growth upland oak forests with site indices ranging from approximately 55 to 90 (base age of 50 years of white oak). This wide range of potential site productivities was selected to determine if patterns of C and N storage vary with changing site productivity. Carbon and N pools were determined for the following components: living aboveground biomass, root biomass, annual litterfall, forest floor layers, and the mineral soil. Results indicate that total C and N storage increases as site productivity increases, but that the relative importance of these components may vary with changes in site productivity. In addition, the annual nutrient inputs from the various pools may vary directly with changes in site productivity.
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