^(137)Cs Redistribution in Thin Stony Soil of a Carbonate Rock Slope in Southwest China

作     者：LI Hao ZHANG Xin-Bao WANG Kc-Lin WEN An-Bang LI Hao 1,2,ZHANG Xin-Bao 1,3,4 WANG Ke-Lin 4 and WEN An-Bang 1 1 Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu 610041(China) 2 Graduate University,Chinese Academy of Sciences,Beijing 100049(China) 3 State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002(China) 4 Institute of Subtropical Agriculture,Chinese Academy of Sciences,Changsha 410125(China)

作者机构：Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 (China) Graduate University Chinese Academy of Sciences Beijing 100049 (China) State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 (China) Institute of Subtropical Agriculture Chinese Academy of Sciences Changsha 410125 (China) 

出 版 物：《Pedosphere》 (土壤圈（英文版）)

年 卷 期：2011年第21卷第1期

页      面：37-45页

核心收录：

学科分类：082803[工学-农业生物环境与能源工程] 08[工学] 0828[工学-农业工程] 081401[工学-岩土工程] 0818[工学-地质资源与地质工程] 0903[农学-农业资源与环境] 0804[工学-仪器科学与技术] 0901[农学-作物学] 0814[工学-土木工程] 

基　　金：Supported by the Western Action Program of the Chinese Academy of Sciences (No. KZCX2-XB2-08) the National BasicResearch Program (973 Program) of China (No. 2006CB403200) 

主　　题：carbonate dissolution, ^137Cs fallout, ^137Cs inventory karst area runoff 

摘      要：The fallout radionuclide cesium-137(137 Cs) has been widely employed as a tracer for assessment of soil loss from thick uniform soils;however,few studies have been conducted on thin stony soils on slopes underlain by carbonate rocks which are widely distributed in karst *** derived from 137 Cs measurement of soil samples collected along a carbonate rock slope with thin stony soil where neither soil erosion nor deposition occurred was used to investigate the characteristics of 137 Cs redistribution in a karst area of Southwest *** results indicated that the 137 Cs inventories of the surface soil on the slope studied were much lower than that of the local 137 Cs reference inventory and the 137 Cs activities were much higher than those on slopes with thick uniform *** spatial distribution of 137 Cs inventories was characterized by considerable *** high 137 Cs depletion in the stony soil of the slope studied was mainly because a considerable proportion of the fallout input of 137 Cs could be lost with runoff and the dissolution of carbonate particles in the soil promoted the loss of 137 *** demonstrated that the rates of soil loss could not be estimated from the degree of depletion of the 137 Cs inventory relative to the local reference inventory for the thin stony soil of the rocky slope underlain by carbonate rocks in the study area in the way that has been widely used in areas with thick uniform soils.