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EFFECTS OF ELEVATED CO2 AND N FERTILIZATION ON SOIL RESPIRATION FROM PONDEROSA PINE (PINUS PONDEROSA) IN OPEN-TOP CHAMBERS
Citation:
Vose, J., K. Elliott, D. Johnson, R. Walker, M. Johnson, AND D. Tingey. EFFECTS OF ELEVATED CO2 AND N FERTILIZATION ON SOIL RESPIRATION FROM PONDEROSA PINE (PINUS PONDEROSA) IN OPEN-TOP CHAMBERS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-95/581, 1995.
Description:
The objectives of this study were to determine treatment effects, quantify seasonal variation, and determine regulating mechanisms. rowing season soil CO2 evolution under elevated atmospheric CO2 and soil nitrogen additions were measured. cross all sample periods and treatments there was a significant correlation between soil CO2 evolution and percent fungal hyphae observed in minirhizotron tubes. ence, some of the seasonal and treatment variation is also related to differences in heterotrophic activity.