重庆市“十五”期间酸雨污染特征及成因分析

The Characteristics of Acid Rain Pollution and the Causes for Its Formation During the Tenth Five-Year Plan in Chongqing

以5个点降水监测数据为基础,对重庆市“十五”期间酸雨污染的变化趋势、空间分布特征和降水中化学组份构成进行了分析,并从致酸源、大气环境质量、地形特征和气象因素等方面探讨了酸雨形成的主要原因,认为重庆市酸雨污染具有典型的局地性,化石燃料燃烧向大气中排放大量的二氧化硫和氮氧化物是酸雨形成的根本原因,恶劣的大气污染物扩散条件加重了酸雨污染的程度.

Based on the precipitation monitoring data obtained from five sampling sites, the variation trends of acid rain and the spatial distribution and chemical species of precipitation and the main causes of the formation of acid rain are discussed in this paper. Large amount of sulfur dioxide and nitrogen oxide emission by fossil fuel combustion are found to be the fundamental causes, and the bad diffusion conditions for the air pollutants aggravate the situation.