USDA Forest Service
 

Pacific Southwest Research Station

 

Pacific Southwest Research Station
800 Buchanan Street
West Annex Building
Albany, CA 94710-0011

(510) 559-6300

United States Department of Agriculture Forest Service. USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.

Urban Ecosystems and Social Dynamics

Urban Ecosystems and Processes

Effects of Tree Cover on Parking Lot Microclimate and Evaporative Hydrocarbon Emissions from Parked Vehicles

Summary

The difference in parking lot microclimate resulting from the presence or absence of tree shade cover was measured. Microclimate data from contrasting shade regimes were used to estimate the potential for increases in parking lot tree cover to reduce motor-vehicle hydrocarbon and nitrogen oxide (NOx) emissions.


Years of Research:  1997-1999

Funded by:  John Z. Duling Grant (International Society of Arboriculture Research Trust) USDA Forest Service Asian American Recruitment Initiative

Cooperators:  California Air Resources Board, University of California Cooperative Extension, Albertson.s, Inc., USDA Crops Pathology

Products / Publications:

  1. Bloniarz, D., Maco, S. E., McPherson, E. G. 2005. iTree: Urban Forest Inventory and Analysis. Davis, CA: Center for Urban Forest Research, Pacific Southwest Research Station, USDA Forest Service - View Document [4.01 MB]

  2. Geiger, J.R. 2002. Where are all the cool parking lots?. Davis, CA: Center for Urban Forest Research, Pacific Southwest Research Station, USDA Forest Service; 4p. Research summary - View Document [241.8 KB]

  3. Geiger, J.R. 2003. Tree Values Quantified. The Desert Arborist, Southwest Trees & Turf. July/August; Page 12 - View Document [66.25 KB]

  4. McPherson, E.G. 1998. The impact of shade trees on reducing heat island effect in parking lots. Arid Zone Times. February :1-2 - View Document [275.51 KB]

  5. McPherson, E.G. and J.R. Simpson. 2000. Reducing air pollution through urban forestry. In: Adams, D., (ed). Proceedings of the 48th annual meeting of the California Forest Pest Council; 1999 November 18-19; Sacramento. Sacramento: California Forest Pest Council :18-21 - View Document [23.12 KB]

  6. McPherson, E.G., J.R. Simpson and K.I. Scott. 2001. Actualizing microclimate and air quality benefits with parking lot tree shade ordinances. Wetter und Leben. 4(98) :353-369 - View Document [133.13 KB]

  7. Scott, K.I., J.R. Simpson and E.G. McPherson. 1998. Green parking lots: can trees improve air quality?. California Urban Forests Council Newsletter: CUF Link. Spring :1-2 - View Document [304.43 KB]

  8. Scott, K.I., J.R. Simpson, E.G. McPherson. 1999. Effects of tree cover on parking lot microclimate and vehicle emissions. Journal of Arboriculture. 25(3) :129-142 - View Document [1.1 MB]

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.