摘要
根据山东省多年降水观测资料，分析了其17个设区城市的酸雨现状，并研究了山东大学和青岛市硫的干、湿沉降及其变化规律．结果表明，近5a（1997～2001年）青岛市降水酸度位列全省17城市之首，是唯一降水pH年均值低于酸雨临界值5．60的城市；山东省主要城市的降水酸度总体上呈下降趋势．山东大学和青岛市近年来硫沉降总通量基本稳定或呈下降趋势，仍达10t／（km^2·a）左右；在硫沉降总通量中，硫干沉降的贡献率达80％以上，而在硫干沉降通量中，SO2干沉降的贡献率要远远高于SO2干沉降的贡献率．通过分析酸雨前体物排放强度、土壤酸碱性以及气象条件对酸沉降的影响，揭示了山东省内主要城市酸沉降的影响因子．
Based on the monitoring data for years in Shandong Province, current situation of acid rain in every city was assessed, and the temporal distribution of the dry, wet and total sulfur deposition in Jinan and Qingdao were studied. The results showed that Qingdao which had the largest precipitation acidity was the single city whose annul average precipitation pH was below 5.60. The precipitation acidities in the main cities of Shandong Province were in a descent tendency. The total sulfur desposition in Jinan and Qingdao was basically stable or in a descent tendency, but also reached 10 t/（km^2·a） or so. Among the total sulfur deposition flux, the dry deposition of sulfur had the greater contribution, and the contribution of SO2 dry deposition was higher than that of SO4^2- dry deposition. By analyzing the relation between the precipitation acidity and the SO2 discharge intensity,soil acidity and meteorological condition, the impact factors of acid precipitation in the cities of Shandong Province were revealed.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2006年第12期2453-2457,共5页
Environmental Science
基金
中国科学院知识创新工程项目(KZCX3-SW-423)
国家杰出青年科学基金项目(70325002)
关键词
酸沉降
硫
影响因子
山东省
acid deposition
sulfur
impact factor
Shandong Province
