鄱阳湖生态经济区油菜和苔藓硫同位素分析

Sulfur Isotopic Analysis in The Rape and Epilithic Mosses from Poyang Lake Eco-economic Region

对鄱阳湖生态经济区不同生长环境下的油菜、苔藓硫同位素进行了测定.结果表明,在油菜科技试验示范基地或高产创建示范片区,油菜籽富集更多轻硫,δ^34S值明显低于其他部位;石化厂、发电厂、省公路收费站周边的油菜区,油菜组织的硫同位素值高于其他地区.区内苔藓硫同位素值都为正值,其变化范围为2.8‰~8.49‰,表现为由北往南、由东往西递减的趋势.鄱阳湖生态经济区区内大气硫受到金属硫化物矿石冶炼、化石燃料燃烧产生的SO2人为活动硫源和生物成因天然硫源两种硫来源的影响.

This study analyzed the sulfur isotopic in the tissues of rape and epilithic mosses collected from Poyang Lake Eco-economic Region.The results indicated that rapeseed enriched more light sulfur andδ^34 s value was significantly lower than other parts in the rapeseed science and technology demonstration areas.The sulfur isotope value in the tissues of rape are higher than that of other regions in rapeseed area around petrochemical plant,power plant and highway toll station.The sulfur isotope values of mosses in the area were positive,and the variation range was 2.8‰~8.49‰,which showed decrease tendency from north to south and from east to west.There were two kinds of the atmospheric sulfur source in the Poyang Lake Eco-economic Region,which were mainly affected by the human activities such as fossil fuel,metal sulfide ore smelting human activities and the natural sulfur source from the biological origin.