Study on<sup>137</sup>Cs Method Used in Soil Erosion and ediment Delivery on Sloping Fiel ds in Gully Area on Loessal Plateau

Wu Yonghong; Li Zhuo

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Study on¹³⁷Cs Method Used in Soil Erosion and ediment Delivery on Sloping Fiel ds in Gully Area on Loessal Plateau

- Study on¹³⁷Cs Method Used in Soil Erosion and ediment Delivery on Sloping Fiel ds in Gully Area on Loessal Plateau
- Bulletin of Soiland Water Conservation Vol. 13, Issue 2, Pages: 22-25(1994)
- 作者机构：
  
  黄委会西峰水土保持科学试验站中国科学院水利部成都山地灾害与环境研究所
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- Published：1994
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Wu Yonghong, Li Zhuo. Study on¹³⁷Cs Method Used in Soil Erosion and ediment Delivery on Sloping Fiel ds in Gully Area on Loessal Plateau[J]. Bulletin of Soiland Water Conservation, 1994, 13(2): 22-25.
DOI：

Wu Yonghong, Li Zhuo. Study on¹³⁷Cs Method Used in Soil Erosion and ediment Delivery on Sloping Fiel ds in Gully Area on Loessal Plateau[J]. Bulletin of Soiland Water Conservation, 1994, 13(2): 22-25. DOI：

摘要

该文通过运用铯-137法对黄土高原沟壑区陇东南小河沟老谷坡农耕地侵蚀进行研究，定量地分析了其侵蚀及产沙。结果表明：在老谷坡农地内其土壤侵蚀量很大，但其输移率却很低，即其真正流失量较小，存在大量地内堆积。通过修建梯田，可使其流失量大大减小，梯田较坡耕地拦沙效益高出９６.５%。

Abstract

Casium137 was uused to study soil erosion and sediment delivery on old sloping fields in Nan Xiao He gully of zst Gan Su on loess plateau in this papery. A quantitative analysis was made to test the soil erosion and sediment deivery. The results shown that the amount of erosion was high but delivery ratio in the slope was low. That is to say

the sediment that really lost from the land was less

so there was large amount deposition in old sloping fields. The soil loss can be reduced by constructing terrances. To compare terrance with the sloping fields

there is 96.5% benefit of reducing sediment.

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Study on137Cs Method Used in Soil Erosion and ediment Delivery on Sloping Fiel ds in Gully Area on Loessal Plateau

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Study on¹³⁷Cs Method Used in Soil Erosion and ediment Delivery on Sloping Fiel ds in Gully Area on Loessal Plateau