Assessing net carbon sequestration on urban and community forests of northern New England,USA |
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| Authors: | Daolan Zheng Mark J. Ducey Linda S. Heath |
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| Affiliation: | 1. Department of Natural Resources & The Environment, University of New Hampshire, Durham, NH 03824, USA;2. USDA Forest Service, Northern Research Station, Durham, NH 03824, USA;1. Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Apartado 1095, 41080 Sevilla, Spain;2. Departamento de Ecología y Geología, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos s/n, 29071 Málaga, Spain;1. College of Natural Resources, University of Wisconsin-Stevens Point, 800 Reserve Street, Stevens Point, WI 54481, USA;2. School of Forest Resources and Conservation, University of Florida, PO Box 110410, Gainesville, FL 32611, USA;3. Department of Biological Sciences, University of Alabama, PO Box 870344, Tuscaloosa, AL 35487, USA;4. USDA Forest Service, Southern Research Station, Knoxville, TN, USA;1. University of Helsinki, Department of Forest Sciences, Finland;2. University of Helsinki, Department of Environmental Sciences, Finland;3. City of Helsinki, Public Works Department, Street and Park Division, Finland;1. Applied Plant Ecology, Biocenter Klein Flottbek, University of Hamburg, Ohnhorststr. 18, 22609 Hamburg, Germany;2. Institute of Soil Science, University of Hamburg, Allende-Platz 2, 20146 Hamburg, Germany;1. School of Public and Environmental Affairs, Indiana University, Bloomington, IN 47405, United States;2. Urban Ecology Research Laboratory, University of Washington, Seattle, WA 98195, United States;3. Department of Geography, Indiana University, Bloomington, IN 47408, United States |
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| Abstract: | Urban and community forests play an important role in the overall carbon budget of the USA. Accurately quantifying carbon sequestration by these forests can provide insight for strategic planning to mitigate greenhouse gas effects on climate change. This study provides a new methodology to estimate net forest carbon sequestration (FCS) in urban and community lands of northern New England using ground based forest growth rates, housing density data, satellite derived land cover and tree canopy cover maps at the county level. We estimated that the region's urban and community forests sequestered 603,200 tC/yr ($38.7 million/yr value), contributing 8.2% of regional net forest ecosystem carbon sequestration. The contributions at the state level varied from 2.3% in Vermont to 16.6% in New Hampshire with substantial variation at the county level up to 73.3%. Spatially, contribution rates from urban and community forests at the county level were much higher and concentrated in southeast portion of NH and southwest portion of ME along the coast, and decreased toward inland areas. Our estimated net FCS compared reasonably with gross FCS in the region reported by a previous study. On average, the net FCS was 34.2% lower (varying from 41.9% lower in Vermont to 28.1% lower in Maine) than the corresponding gross FCS mainly because of a lower regional average net growth rate used in this study, compared to the national average gross carbon sequestration rate used in the previous study. |
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