Regional Air Quality in the Four Corners Study Region
The results from the regional air quality analysis for the Four Corners Study are discussed in the paper. The study was one of five regional studies conducted for the National Commission on Air Quality. Potential regional air quality impacts were evaluated through the year 1995 for alternative energy scenarios under current and alternative regulatory policies. The alternative regulatory policies include emission fees, technology standards, emission ceilings, and prevention of significant deterioration class elimination. The alternatives were compared in terms of their impacts on regional visibility and on the ambient concentrations of SO/sub 2/, SO/sub 4/, and primary fine particulates. The fate of the pollutants was estimated. The alternative regulatory policies were quite different with respect to their control of SO/sub x/ emissions and their impacts on regional visibility. Sources located outside of the study region were estimated to have a major impact on regional air quality within the study region.
Based on the landscape characteristics of city block,a grade appraisement index system on effect of aesthetic of city block was point-ed out.And based on the system,the indistinct synthesis appraisement model was pointed out.The garden landscape effects of aesthetic per-ception of the People’s Hospital of Fangcheng County were appraised by using this model.