137Cs and 210Pbex as soil erosion tracers in the hilly Sichuan Basin and the Three Gorges area of China |
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| Authors: | Zhonglin Shi Anbang Wen Xinbao Zhang Xiubin He Hao Li Dongchun Yan |
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| Affiliation: | 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 |
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| Abstract: | 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 137Cs and 210Pbex, 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 137Cs and 210Pbex measurements, to compare the 137Cs and 210Pbex reference inventories, and to report several case studies undertaken in the hilly area of Sichuan Basin and the Three Gorges area of China. |
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| Keywords: | Soil erosion Cultivated land 137 Cs 210 Pb ex Uncultivated land Sichuan Basin Three Gorges area China |
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