^(137)Cs and^(210)Pb_(ex) as Soil Erosion Tracers in the Hilly Sichuan Basin and the Three Gorges Area of China  

作　　者：SHI Zhonglin WEN Anbang ZHANG Xinbao HE Xiubin LI Hao YAN Dongchun 

机构地区：[1]Key Laboratory of Mountain Surface Processes and Ecological Regulation,Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu 610041,China [2]Graduate University of Chinese Academy of Sciences,Beijing 100049,China [3]College of Resources and Environment,Sichuan Agricultural University,Ya'an 625014,China

出　　处：《Journal of Mountain Science》2012年第1期27-33,共7页山地科学学报（英文）

基　　金：by the National Key Technology R&D Program (2011BAD31B03);the Important National Science & Technology Specific Projects (2009ZX07104-002-06);the ActionPlan for West Development of Chinese Academy of Sciences (KZCX2-XB3-09)

摘　　要：Accelerated soil erosion and land degradation represent major environmental problems for agricultural lands.Reliable information on the rates of soil loss is urgently needed.The traditional techniques for documenting rates of soil loss may meet this need,but face many limitations.The fallout radionuclides,especially 137 Cs and 210 Pb ex,are increasingly used as effective tracers to quantify soil erosion rates,and they represent a valuable complement to the existing classical methods.This paper aims to introduce the basis for assessing soil erosion rates on cultivated and uncultivated slopes by using 137 Cs and 210 Pb ex measurements,to compare the 137 Cs and 210 Pb ex reference inventories,and to report several case studies undertaken in the hilly area of Sichuan Basin and the Three Gorges area of China.

关 键 词：Soil erosion Cultivated land 137 Cs 210 Pb ex Uncultivated land Sichuan Basin Three Gorges area China 

分 类 号：X834.02[环境科学与工程—环境工程] S157.1[农业科学—土壤学]