| SPECIFIC DEGRADATION OF WATERSHEDS |
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| 作者姓名： | Boubacar KANE Pierre Y. JULIEN |
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| 作者单位： | Central Director of Water Energie du Mali S.A.，formerly of Colorado State University，Fort Collins，CO80523，U. S. A，Engineering Research Center，Colorado State University，Fort Collins，CO 80523，U.S.A. |
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| 基金项目： | The authors gratefully acknowledge the assistance of S. Shah-Fairbank at Colorado State University. |
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| 摘 要： | An extensive database of reservoir sedimentation surveys throughout continental United States is compiled and analyzed to determine specific degradation SD relationships as function of mean annual rainfall R, drainage area A, and watershed slope S. The database contains 1463 field measurements and specific degradation relationships are defined as function of A, R and S. Weak trends and significant variability in the data are noticeable. Specific degradation measurements are log normally distributed with respect to R, A, and S and 95% confidence intervals are determined accordingly. The accuracy of the predictions does not significantly increase as more independent variables are added to the regression analyses.
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| 关 键 词： | 水库沉积 沉积量 退化 分水岭 土壤侵蚀 |
| 修稿时间： | 2006-092007-04 |
SPECIFIC DEGRADATION OF WATERSHEDS |
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| Boubacar KANE Pierre Y. JULIEN.SPECIFIC DEGRADATION OF WATERSHEDS[J].International Journal of Sediment Research,2007,22(2):114-119. |
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| Authors: | Boubacar KANE Pierre YJULIEN |
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| Abstract: | An extensive database of reservoir sedimentation surveys throughout continental United States is compiled and analyzed to determine specific degradation SD relationships as function of mean annual rainfall R, drainage area A, and watershed slope S. The database contains 1463 field measurements and specific degradation relationships are defined as function of A, R and S. Weak trends and significant variability in the data are noticeable. Specific degradation measurements are log normally distributed with respect to R, A, and S and 95% confidence intervals are determined accordingly. The accuracy of the predictions does not significantly increase as more independent variables are added to the regression analyses. |
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| Keywords: | Specific degradation Sediment yield Reservoir sedimentation |
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