Magnetic Properties of Tree Leaves and Their Significance in Atmospheric Particle Pollution in Linfen City,China  

作　　者：YIN Gang HU Shouyun CAO Liwan Wolfgang ROESLER Erwin APPEL 

机构地区：[1]State Key Laboratory of Lake Science and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences [2]University of Chinese Academy of Sciences [3]Institute for Geosciences,University of Tübingen

出　　处：《Chinese Geographical Science》2013年第1期59-72,共14页中国地理科学（英文版）

基　　金：Under the auspices of National Natural Science Foundation of China (No. 40972216);Deutsche Forschungsgemein-schaft (DFG) Project (NO. AP 34/21)

摘　　要：Fifty-one tree leaves were sampled in the industrial area,residential area,and Fenhe River ecological zone,for the purpose of a magnetic study on atmospheric pollution in Linfen City,Shanxi Province,China.Measurements of mass-specific magnetic susceptibility(χ) show a significant variation range(from 11.6 × 10-8 m3/kg to 129.7 × 10-8 m3/kg).Overall values of magnetic susceptibility decline in the following sequence:industrial area > residential area > Fenhe River ecological zone.The relatively elevated concentration-related magnetic parameters(saturation isothermal remanent magnetization,anhysteretic remanent magnetization and magnetic susceptibility) appear in the industrial area,with their highest values in the vicinity of Linfen Steel Mill.Magnetic particles are dominated by multidomain,magnetite-like minerals.Magnetic particle concentration and grain size both decrease with the increasing distance from industrial area,indicating the industrial area,especially Linfen Steel Mill,is the main source of atmospheric particle pollution.Residential area and Fenhe River ecological zone are also affected by industrial emission to a certain extent.The results of this study indicate that magnetic measurements of tree leaves are practicable for monitoring and determination of atmospheric pollution in Linfen City.Fifty-one tree leaves were sampled in the industrial area,residential area,and Fenhe River ecological zone,for the purpose of a magnetic study on atmospheric pollution in Linfen City,Shanxi Province,China.Measurements of mass-specific magnetic susceptibility（χ） show a significant variation range（from 11.6 × 10-8 m3/kg to 129.7 × 10-8 m3/kg）.Overall values of magnetic susceptibility decline in the following sequence：industrial area 〉 residential area 〉 Fenhe River ecological zone.The relatively elevated concentration-related magnetic parameters（saturation isothermal remanent magnetization,anhysteretic remanent magnetization and magnetic susceptibility） appear in the industrial area,with their highest values in the vicinity of Linfen Steel Mill.Magnetic particles are dominated by multidomain,magnetite-like minerals.Magnetic particle concentration and grain size both decrease with the increasing distance from industrial area,indicating the industrial area,especially Linfen Steel Mill,is the main source of atmospheric particle pollution.Residential area and Fenhe River ecological zone are also affected by industrial emission to a certain extent.The results of this study indicate that magnetic measurements of tree leaves are practicable for monitoring and determination of atmospheric pollution in Linfen City.

关 键 词：tree leaves environmental magnetism atmospheric particulate matter environmental pollution Linfen City China 

分 类 号：X173[环境科学与工程—环境科学] P942[天文地球—自然地理学]