Open AccessAir Pollutant Uptake by Sacramento's Urban Forest
Author(s) -
K Scott,
E. Gregory McPherson,
J.R. Simpson
Publication year - 1998
Publication title -
arboriculture and urban forestry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.222
H-Index - 47
eISSN - 2155-0778
pISSN - 1935-5297
DOI - 10.48044/jauf.1998.027
Subject(s) - pollutant , environmental science , particulates , tonne , hydrology (agriculture) , air pollution , dry season , atmospheric sciences , deposition (geology) , air pollutants , geography , ecology , biology , paleontology , geotechnical engineering , archaeology , sediment , geology , engineering
A dry deposition model was employed to estimate air pollutant uptake by Sacramento's urban forest. Assuming 1990 air pollutant concentrations, model simulations estimated that approximately 1,457 metric tons of air pollutant are absorbed annually, at an implied value of US$28.7 million. The growing season daily uptake for ozone was approximately 2.4 metric tons per day, while particulate matter (< 10 u. diameter, PM10) uptake was slightly greater, at 2.7 metric tons per day. Daily uptake of NCX, and particulate matter represented 1 % to 2% of anthropogenic emissions for the county. Estimated growing-season annual air pollutant uptake rates averaged 10.9 kg/(ha land area per yr) for the entire study area, 13.9 kg/(ha land area per yr) for urban areas and 4.2 kg/(ha land area per yr) for rural areas. Pollutant uptake rates decreased with decreasing tree canopy cover, along an urban-to-rural gradient.