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Last Updated: 23-03-2016 17:42
Groffman, P., Williams, C., Pouyat, R., Band, L., Yesilonis, I. 2009. Nitrate Leaching and Nitrous Oxide Flux in Urban Forests and Grasslands. Journal of Environmental Quality. ASA, CSSA, SSSA, Madison, WI. Volume 38, Pages 1848-1860
agriculture, forest, urban, Soil
This study measured nitrate leaching and soil:atmosphere nitrous oxide ?ux in four urban grassland and eight forested long-term study plots with a range of disturbance, soil type and landscape position in the Baltimore, Maryland metropolitan area from 2002-2005. Annual nitrate leaching ranged from 0.05 to 0.79 g N/ m/ yr for the forest plots and was lower than in grass plots, except in a very dry year and when a disturbed forest plot was included in the analysis. Although nitrate leaching was higher in urban grasslands than in forest plots, the difference was not as large or consistent as expected, and the most intensively fertilized plots did not have the highest leaching losses.