摘要
应用南昌敷林农田保护区酸雨2 a(2005-2006年)监测数据,及同期南昌空气SO2、NO2、PM10浓度观测值,进行酸雨pH值和空气污染物年内变化及其相互关系的分析;统计农田保护区常年主导风向、测算南昌两控区重点源企业方位,以了解空气污染物年季传输规律。分析结果表明:城市空气SO2、NO2、PM10浓度与农田保护区酸雨pH值有极显著相关关系,农田保护区常年主导风向与南昌两控区重点源企业的方位基本一致。这两个因素是造成农田保护区酸雨严重的主要原因,建议上风向排放源实施减排对策、推广先进的脱硫除尘技术以保护农田生态环境。
The seasonal variations of acid rain, pH value and concentrations of air pollutants and their correlation were analyzed on the basis of the monitoring data on the acid rain during 2005 and 2006 in the protected farmland area of Fulin, Nanchang City. Simultaneously the atmospheric concentrations of SO2 , NO2 , PMi0were measured. In order to understand the annual and seasonal characteristics of air pollutants transportation, conducted to identify the dominant wind direction over the protected farmland areas and the locations of major emission sources within the areas for controlling acid rain and SO2 pollution in Nanchang were statistically analyzed, The results showed that the pH of the acid rain in the protected farmland areas was highly significantly correlated with the atmospheric concentrations of SO2, NO2and PM^0 in the city districts. The dominant wind direction over the protected farmland areas was almost consistent with the location of major emission sources within the areas for controlling acid rain and SO2 pollution in Nanchang, These are the two major contributors to the seriousness of the acid rain in the protected farmland areas. It is necessary to take steps to reduce emission and use advanced techniques for desulphurization and removing dust by the factories upwind in order to protect the farmland environment.
出处
《中国农业气象》
CSCD
2008年第3期358-360,364,共4页
Chinese Journal of Agrometeorology
基金
中国气象局生态与农业气象试验站点项目
南昌市气象防灾减灾技术研发基金项目
