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Highlight IDTitleStrategic Program Area(s)YearStation
Photo of Trees in New York City Central Park. Dave Nowak, USDA Forest Service
ID: 472
Carbon Sequestration by Urban Trees Valued in the Billions of Dollars Annually

Forest Service scientists quantified carbon storage and sequestration by urban trees in the United States to assess the magnitude and role of ur ...

Principal Investigator : David Nowak

Resource Management and Use2013NRS
Photo of Infestation of European buckthorn (Rhamnus cathartica L.) on left with bush honeysuckle on right. Chris Evans, River to River Cooperative Weed Management Area, Bugwood.org
ID: 68
Nature Dominates in City Tree Regeneration

Assessment of tree planting and natural regeneration in cities reveals that most trees in cities are not planted

Principal Investigator : David Nowak

Resource Management and Use2012NRS
Photo of Estimated removal per square kilometer of land (tonnes km2) of all pollutants (NO2, O3, PM2.5, SO2) by trees per county in 2010. USDA Forest Service
ID: 634
Trees Improve Human Health and Save Lives

Air pollution is a serious health concern. Trees offer surfaces that remove gaseous and particulate air pollutants. Modeling of local environmen ...

Principal Investigator : David Nowak

Resource Management and Use2014NRS
Photo of
ID: 89
U.S. Urban Tree Cover Declining

Analysis of aerial images reveals that U.S. urban areas are losing about 20,000 acres of tree cover per year

Principal Investigator : David Nowak

Resource Management and Use2012NRS
Photo of
ID: 218
Urban and Community Forest Summaries for the Lower 48 States

NRS scientist David Nowak and others have recently published several important summaries of tree and forest information.

Principal Investigator : David Nowak

Resource Management and Use2010NRS