芜湖城区表层土壤黑碳含量及分布特征  

Content and Distribution of Black Carbon in Surface Soil of the Urban Area of Wuhu

作　　者：朱哲[1] 方凤满[1,2] 邓正伟[1] ZHU Zhe FANG Feng- man DENG Zheng-wei(College of Territorial Resources and Tourism, Anhui Nornal University, Wuhu 241003, China Anhui Key Laboratory of Natural Disaster Process and Prevention,Wuhu 241003,China)

机构地区：[1]安徽师范大学国土资源与旅游学院,安徽芜湖241003 [2]安徽自然灾害过程与防治研究省级实验室,安徽芜湖241003

出　　处：《生态与农村环境学报》2016年第6期908-913,共6页Journal of Ecology and Rural Environment

基　　金：国家自然科学基金(41371480);高等学校博士学科点专项科研基金(20123424120003)

摘　　要：为了解城市化进程中人类活动对城市土壤黑碳积累的影响,以芜湖市区(分为镜湖区、鸠江区、弋江区、三山区和开发区)为例,采集154个表层土壤样品,测定土壤中黑碳及有机碳含量。结果表明,芜湖市土壤黑碳含量在0.02~26.16 g·kg^(-1)之间,平均值为5.87 g·kg^(-1),变异系数为62.98%;各功能区土壤黑碳含量平均值由高到低排序为镜湖区、鸠江区、三山区、弋江区和开发区;芜湖市土壤黑碳含量主要分布在>5~10 g·kg^(-1)之间,占样品总数的50%。城市土壤黑碳与有机碳含量比值变幅为0.01~0.88,平均值为0.58,表明芜湖市城市土壤黑碳的主要来源为矿物燃料燃烧。各功能区黑碳含量分布存在较大空间差异,这与城市人为活动影响有密切关联。In order to investigate effects of human activities in the process of urbanization on accumulation of black carbon in the soil,a total of 154 soil samples were collected from the surface soil of the urban area of Wuhu,including five different function zones,for analysis of contents of organic carbon （OC） and black carbon （ BC）. Results show that the content of black carbon in the soil of Wuhu varied in the range of 0. 02-26. 16 g ？ kg 1, being 5. 87 g ？ kg 1 on average and 62. 98% in variation coefficient. The five function zones followed a decreasing order of Jinghu〉Jiujiang〉Sanshan〉Yijiang〉 the development zone in terms of mean BC content. About 50% of the samples were found to have black carbon 〉5-10 g · kg ^-1 in content. The BC/OC ratio in the urban soil varied in the range of 0. 01-0. 8 8 ,being 0. 58 on average,which indi-cates that the BC in the soil of Wuhu City originates mainly from combustion of fossil fuel. BC content varied sharply with function zone in spatial distribution, which is held to be closely related to human activities in the city of Wuhu.

关 键 词：黑碳 土壤 城市 分布特征 芜湖 

分 类 号：X825[环境科学与工程—环境工程]