Analyzing the Reductions in U.S. Air Pollution Emissions: 1970 to 1990
研究了1970至1990年间美国六种主要空气污染物排放下降的原因，将变化分解为规模、结构、能源强度、能源结构和技术效应，为理解排放与收入关系提供案例。
Findings of inverted-U relationships between income and certain pollutants have generated considerable controversy, yet relatively little is known about the factors underlying these relationships. U. S. emissions of several major air pollutants have begun to decline, mirroring trajectories found using data across countries and time. We examine U. S. emissions of six air pollutants between 1970 and 1990, decomposing the changes into scale, composition, energy intensity, energy mix, and other technique effects. Our results provide a case study of the relative importance of these effects for a country on the downward- sloping portions of its emissions-GDP trajectories for the pollutants examined.