Baltimore's Vegetation Structure And Its Ability To Remove Air Pollutants And Sequester Carbon Dioxide (presentation)

NOWAK, DAVID J.

Two hundred and two, 0.04 hectare, permanent plots were established among all land uses within the city of Baltimore in 1999. Data will be combined with similar non-permanent plot data (215 plots) collected in 1995, and hourly weather and pollutant concentration data, in the Urban Forest Effects (UFORE) model to calculate vegetation functions of atmospheric carbon dioxide storage and sequestration, and air pollution (ozone, sulfur dioxide, nitrogen dioxide, carbon monoxide, and particulate matter less than 10 microns) removal and formation. The permanent plots will be remeasured in 3 years to monitor changes in urban forest structure and function. Data on forest change will be compared to changes in Syracuse, NY and Phoenix, AZ, based on permanent plots established, or soon to be established, in these cities. Data from 1995 reveal that the City of Baltimore has approximately 2.6 million trees, most of which were white mulberry (12.2%), black locust (11.4%), red maple (5.2%), black cherry (4.3%) and American elm (4.3%). Baltimore's trees were predominantly located in forest (30.5%) and high-density residential (24.4%) land uses. Preliminary data on urban forest structure and its effects on carbon storage / sequestration and air pollution will be presented, along with methods related to permanent plot establishment and data collection.