Accumulation and relationship of metals in different soil aggregate fractions along soil profiles

作     者：Qian Shen Mengjie Wu Mingkui Zhang Qian Shen;Mengjie Wu;Mingkui Zhang

作者机构：Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant NutritionCollege of Environmental&Resource SciencesZhejiang UniversityHangzhou 310058China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2022年第34卷第5期

页      面：47-54页

核心收录：

学科分类：12[管理学] 1204[管理学-公共管理] 082803[工学-农业生物环境与能源工程] 08[工学] 0828[工学-农业工程] 120405[管理学-土地资源管理] 

基　　金：This work was supported by the National Key Research and Development Project of China(No.2017YFD0800305) 

主　　题：Soil profile Aggregate Structural stability index(SSI) Aggregate stability index(ASI) Metals Accumulation factor(AF) 

摘      要：Different aggregates vary in their ability to retain or adsorb metals in *** soil profiles were sampled from different soil horizons and grouped,and the concentrations of Al,Mg,Ca,Fe,Mn,Cd,Cu and Pb were determined in six sizes of aggregates(2,2-1,1-0.6,0.6-0.25,0.25-0.053,0.053 mm).Significantly high(p0.05)structural stability indexes(SSI)and ag-gregate stability indexes(ASI)were recorded in the topsoil horizon,which may be attributed to the high soil organic matter(SOM)content in aggregates from *** addition,ASI and SSI were positively correlated(r=0.569,p0.05)with each other,which indicated that the stability of soil aggregates could contribute to the structural stability of bulk ***,accumulation factors(AF),principal component analysis(PCA)and Pearson s correlation co-efficients were used for metal element *** results indicated that SOM was not a key factor affecting the accumulation of Ca,Mg,Al,Fe,Mn,Pb,Cd and Cu in soil *** general,AF values for metal elements in microaggregates(0.25 mm)were high,which showed that metals preferred to accumulate in fine soil *** PCA and Pearson s correlation coefficients indicated that soil parent materials primarily controlled the distribution of Al,Ca,Fe,Mg and Mn,while materials derived from technogenic sources have important impacts on the distribution of Cd,Cu and Pb in soil aggregates along the soil profile.