| Application of radioactive fallout cesium－137for soil erosion measurement |
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| DOI：10.7606/j.issn.1000-7601.2006.03.43 |
| Key Words: Cesium-137(137Cs) reference value soil erosion |
| Author Name | Affiliation | | WEI Yan-chang | Key Lab of Systems Ecology Research Center for Eco－environmental Sciences Chinese Academy of Sciences,Beijing 100085,China | | OUYANG Zhi-yun | Key Lab of Systems Ecology Research Center for Eco－environmental Sciences Chinese Academy of Sciences,Beijing 100085,China | | MIAO Hong | Key Lab of Systems Ecology Research Center for Eco－environmental Sciences Chinese Academy of Sciences,Beijing 100085,China | | WANG Xiao-ke | Key Lab of Systems Ecology Research Center for Eco－environmental Sciences Chinese Academy of Sciences,Beijing 100085,China | | GAO Jun | Key Lab of Systems Ecology Research Center for Eco－environmental Sciences Chinese Academy of Sciences,Beijing 100085,China |
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| Abstract: |
| Applying radioactive fallout cesium-137(137Cs) for soil erosion measurement,one can swiftly,accurately and conveniently acquire the detail information on soil erosion,sedimentation and spatial redistribution.This paper presented the fundamentals of this technique and summarized its advantages and limitations.Two key problems of 137Cs technique,namely acquiring the reference value 137Cs fallout in research area and selecting the quantitative model about the amount of 137Cs lost from the erosion site and soil erosion rate,were discussed in detail.Some base assumptions of application 137Cs technique are also discussed.Improving sampling method,integrating "3S" technique and aerial survey approach,using two or three nuclides as tracer at same time for soil erosion research can make the 137Cs technique more perfect.Through Research on the relationship of 137Cs with soil carbon,soil microorganism and other soil properties,the service fields of this technique will be extended. |
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