Contribution of Asian dust to soils in Southeast China estimated with Nd and Pb isotopic compositions

作     者：Jianwu Li Zhaoliang Song Lukas Van Zwieten Li Ruan Feili Li Jianwu Li;Zhaoliang Song;Lukas Van Zwieten;Li Ruan;Feili Li

作者机构：Key Laboratory of Soil Contamination Bioremediation of Zhejiang ProvinceZhejiang A&F UniversityHangzhou 311300China National Center for Tea Plant ImprovementTea Research InstituteChinese Academy of Agricultural SciencesHangzhou 310008.China New South Wales Department of Primary Industries1243 Bruxner HighwayWollongbarNSW 2477Australia Institute of the Surface-Earth System Science ResearchTianjin UniversityTianjin 300072China College of EnvironmentZhejiang University of TechnologyHangzhou 310014China 

出 版 物：《Acta Geochimica》 (地球化学学报（英文）)

年 卷 期：2020年第39卷第6期

页      面：911-919页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 0708[理学-地球物理学] 09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学] 

基　　金：the China Natural Science Foundation(Nos.41877006 and 41930862) we also express great thanks to Hailong Wang for his assistance in language polishing 

主　　题：Aeolian dust Soil genesis Rural soils Basalt 

摘      要：Asian dust has been identified in subtropical soils of ***(Nd)and lead(Pb)elemental and isotopic geochemistry of soils in Southeast China were used to assess the significance of local versus extraneous *** εNd(0)values were close to the parent rocks(+2.9)in the young soils(NSJ);while their values were always negative(〜—3.7)in the old soils(OMJ),implying dust *** young soils contained less Asian dust contribution(8%)while the old soils contained more than 50%Asian dust *** implied that dust contributions were gradually increasing with the soil development stage and Asian dust input had become the principal Nd source for the old soils in this *** the other hand,Pb excesses and low 207Pb/206Pb values(〜0.8503)in near-surface soils indicated a significant anthropogenic Pb addition onto surface *** close relationship between the Pb content and isotopic ratios in the soil profile indicated that the excessive lead in the surface soil was *** results suggested that Asian dust made up a significant fraction in the old soils,but that local sources(i.e.,basalt and anthropogenic)were not trivial in Southeast China.