宝鸡市区大气硫、磷沉降特征分析  

Study on the characteristics of atmospheric sulfur and phosphorus deposition in Baoji urban area

作　　者：韦嘉辉 张媛媛 陈晋 梁婷 WEI Jia-hui;ZHANG Yuan-yuan;CHEN Jin;LIANG Ting(School of Geography and Environment,Baoji College of Arts and Sciences/Shaanxi Provincial Key Laboratory of Disaster Monitoring and Mechanism Simulation,Baoji 721013,Shaanxi,China)

机构地区：[1]宝鸡文理学院地理与环境学院/陕西省灾害监测与机理模拟重点实验室

出　　处：《地下水》2022年第2期127-130,共4页Ground water

基　　金：陕西省教育厅专项科研计划项目(18JK0047);宝鸡文理学院科研项目(ZK2017043);宝鸡文理学院地理与环境学院大创项目(2018DHDC07)。

摘　　要：自工业革命以来,大气降水中的化学组分受人类活动的强烈影响,并以沉降形式进入地表生态系统,进而使得生态环境的负面效应日益突出。为了初步探究城市区人为活动对大气硫磷沉降的影响,本研究收集了宝鸡市区2017年1月至12月间的降水样品,并对于水中硫、磷的浓度及其沉降量进行了初步分析。结果表明:监测期内,雨水中硫、磷浓度分别在0~14.09、0~0.13之间,其月平均浓度分别为2.59、0.27 mg/L;硫、磷季浓度分别表现出秋季>春季>夏季>冬季、夏季>春季>冬季>秋季。监测期内,大气硫、磷沉降总通量分别为7.472 kg/hm^(2)、0.029 kg/hm^(2),硫、磷季通量分别表现出秋季>夏季>春季>冬季、夏季>春季>秋季=冬季。大气硫、磷沉降通量的季节变化主要与宝鸡市降雨的季节差异有关,降雨量大的季节对应大气硫、磷沉降量也相应较高。宝鸡市为工业城市,大气中的硫、磷沉降量相对较多,为了避免大气硫、磷沉降量的增加而影响生态环境,应该加强大气污染监测并及时采取相应措施减少大气污染。Since the Industrial Revolution,the chemical components in atmospheric precipitation have been strongly influenced by human activities and enter the surface ecosystem in the form of sedimentation,which in turn makes the negative effects of the ecological environment increasingly prominent.In order to preliminarily explore the effect of human activities on atmospheric sulfur and phosphorus deposition in urban areas,this study collected precipitation samples in Baoji urban area from January to December 2017,and conducted a preliminary analysis on the concentrations of sulfur and phosphorus in water and their deposition.The results showed that:during the monitoring period,the concentrations of sulfur and phosphorus in rainwater were between 0~14.09 and 0~0.13,respectively,and the monthly average concentrations were 2.59 and 0.27 mg/L,respectively;the seasonal concentrations of sulfur and phosphorus showed that autumn>spring> summer>winter,summer>spring>winter>autumn.During the monitoring period,the total fluxes of atmospheric sulfur and phosphorus deposition were 7.472 kg/hm^(2) and 0.029 kg/hm^(2),respectively,and the seasonal fluxes of sulfur and phosphorus showed autumn>summer>spring>winter,summer>spring>autumn=winter,respectively.The seasonal variation of atmospheric sulfur and phosphorus deposition fluxes is mainly related to the seasonal difference of rainfall in Baoji City.Seasons with large rainfall correspond to higher atmospheric sulfur and phosphorus deposition fluxes.Baoji City is an industrial city,and the amount of sulfur and phosphorus deposition in the atmosphere is relatively large.In order to avoid the increase in the amount of sulfur and phosphorus deposition in the atmosphere and affect the ecological environment,air pollution monitoring should be strengthened and corresponding measures should be taken in time to reduce air pollution.

关 键 词：大气沉降 酸雨 硫沉降 磷沉降 

分 类 号：P426.612[天文地球—大气科学及气象学] S153.61[农业科学—土壤学]