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作 者:刘英红[1,2] 王学松[2] 郭英海[1] 李浩 毛应明[2]
机构地区:[1]中国矿业大学资源与地球科学学院,江苏徐州221008 [2]淮海工学院化学工程学院,江苏连云港222005
出 处:《长江流域资源与环境》2017年第10期1651-1657,共7页Resources and Environment in the Yangtze Basin
基 金:江苏省普通高校研究生科研创新计划(No.KYZZ_0375);淮海工学院创新基金项目(No.Z2014014);江苏省“六大人才高峰”高层次人才培养项目(XCL-181);2015年连云港市第五期“521工程”科研项目;连云港市科技项目(社会发展)(SH1444)~~
摘 要:以徐州某水泥厂附近土壤样品为例,分析了土壤中黑碳(BC)和有机质(OM)的含量,并研究了不同利用类型土壤中黑碳和有机质的磁学响应。结果表明,研究区域黑碳含量和有机质含量的平均值分别为12.35 g/kg和112.33 g/kg。林地样品的黑碳和有机质含量均与频率磁化率正相关,耕地样品的黑碳含量和有机质含量均与频率磁化率负相关,说明不同类型土壤中黑碳和有机质的来源不同,且人为活动对土壤理化性质影响较大。不同利用方式土壤的黑碳含量与磁化率(χ)、非磁滞剩磁磁化率(χARM)、软剩磁(SOFT)、饱和等温剩磁(SIRM)显著正相关;有机质含量和χ,SOFT,SIRM正相关,初步判断这些参数可以作为黑碳或有机质的代用指标。Soil samples were collected from a cement plant in the city of Xuzhou( Jiangsu Province,China),and the soils black carbon( BC) and organic matter( OM) are analyzed in this study. The results show the mean BC and OM in soils are 12. 35 g/kg and 112. 33 g/kg,respectively. The forest soil BC and OM contents have both significantly positive correlations with frequency magnetic susceptibility( χfd)( p 〈0. 001),whereas the farmland soil BC and OM contents exhibit both significantly negative correlations with frequency magnetic susceptibility( p 〈0. 001). The findings indicate the soils BC and OM are quite different in different soil types,and human activities greatly influence on the soils chemical properties. The BC contents in various soil types consistently have significantly positive correlations with magnetic susceptibility( χ), the susceptibility of anhysteretic remanent magnetization( χARM),saturation isothermal remanent magnetization( SIRM) and soft isothermal remanent magnetization( SOFT). The soils OMs have significantly positive correlations with χ,SIRM,and SOFT. This study suggests that these magnetic parameters( χ,SIRM,and SOFT) can be used in soil analysis instead of BC and OM contents.
分 类 号:X502[环境科学与工程—环境工程]
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