Evaluation of rainfall erosivity in Bheta Gad catchment, Kumaun Hills of Uttar Pradesh, central Himalayas

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• 作者：B. K. Ramprasad ; B. P. Kothyari ; R. K. Pande
• 关键词：rainstorm ; splash erosion ; Himalayas ; soil detachment ; momentum
• 刊名：Environment Systems and Decisions
• 出版年：2000
• 出版时间：December 2000
• 年：2000
• 卷：20
• 期：4
• 页码：301-308
• 全文大小：220 KB
• 参考文献：Bryan, R.B. 1979 The influence of slope angle on soil entrainment by sheetwash and rain splash. Earth Surface Processes 4, 43-58.<br>Bubenzer, G.D., Jones, B.A., Jr. 1971 Drop size and impact velocity effects on the detachment of soils under simulated rainfall. Trans. ASAE 14, 625-8.<br>Farmer, E.E. 1973 Relative detachability of soil particles by simulated rainfall. Soil Sci. Soc. Am. Proc. 37, 629-33.<br>Foster, G.R. and Meyer, L.D. 1975 Mathematical simulation of upland erosion by fundamental erosion mechanics. In Present and prospective technology for predicting sediment yields and sources. ARS-S-40, pp. 190-207. Washington, DC: U.S. Department of Agriculture.<br>Foster, G.R. ed 1977 Soil Erosion: Prediction and Control. Soil conservation Society of America Special Publication 21.<br>Hudson, N.W. 1971 Soil Conservation. London: Batsford.<br>Kinnel, P.I.A. 1973 The problem of assessing the erosion power of rainfall from meteorological observations. Soil Sci. Soc. Am. Proc. 37, 617-21.<br>Kinnel, P.I. 1981 Rainfall intensity-kinetic energy relationships for soil loss prediction. Soil Sci. Soc. Am. Proc. 45, 153-5.<br>Lal, R. 1981 Analysis of different processes governing soil erosion by water in the tropics. IAHS publication 13, pp. 351-6.<br>Monke, E.J., Marelli, H.J., Meyer, L.D. and De Jong, J.F. 1977 Runoff, erosion, and nutrient movement from interrill areas. Trans. ASAE 20, 58-61.<br>Morgan, R.P.C. 1978 Field studies of rainsplash erosion. Earth Surface Processes 3, 295-9.<br>Onstad, C.A. and Foster, G.R. 1975 Erosion modeling on a watershed. Trans. ASAE 18, 288-92.<br>Onstad, C.A. and Bowie, A.J. 1977 Basin sediment yield modeling using hydrological variables. In Proceedings of the Paris Symposium on Erosion and Solid Matter Transport in Inland Waters. IAHS Publication 122, pp. 191-202.<br>Pearce, A.J. 1976 Magnitude and frequency of erosion by Hortonian overland flow. J. Geol. 84, 65-80.<br>Quansah, C. 1981 The effect of soil type, slope, rain intensity and their interactions on splash detachment and transport. J. Soil. Sci. 32, 215-24.<br>Walker, P.H., Kinnel, P.I.A. and Green, P. 1978 Transport of noncohesive sandy mixture in rainfall and runoff experiments. Soil. Sci. Soc. Am. J. 42, 793-801.<br>Wischmeier, W.H. and Mannering, J.V. 1969 Relation of soil properties to its erodibility. Soil. Sci. Soc. Am. Proc. 33, 131-7.<br>Wischmeier, W.H. and Smith, D.D. 1978 Predicting Rainfall Erosion Losses. Guide to Conservation Farming. US Department of Agriculture Handbook 537.<br>
• 作者单位：B. K. Ramprasad (1) <br> B. P. Kothyari (2) <br> R. K. Pande (3) <br><br>1. G.B. Pant Institute of Himalayan Environment and Development, Kosi-Katarmal, Almora, 263643, India <br> 2. G.B. Pant Institute of Himalayan Environment and Development, Kosi-Katarmal, Almora, 263643, India <br> 3. Center for Developmental Studies, U.P. Academy of Administration, Nainital, 263002, India <br>
• 刊物类别：Environment, general; Environmental Management; Sustainable Development; Environmental Engineering/B
• 刊物主题：Environment, general; Environmental Management; Sustainable Development; Environmental Engineering/Biotechnology; Environmental Economics;
• 出版者：Springer US
• ISSN：2194-5411

文摘

The importance of the size of raindrop in causing soil detachment and splash has long been recognized, although the total energy expended on erosion by splash may be small. The aggressiveness of rainfall or its capacity to cause detachment can be expressed in terms of drop size, rainfall intensity and kinetic energy or momentum. An attempt has been made to determine the rainfall erosivity (EI) of two gauged stations where continuous rainfall recorders were installed, on the basis of rainfall characteristics. Thus, the relationship between average storm EIb>30b> (rainfall erosivity for 30 minutes interval) values and average depths of rainfall could be developed for the Bheta Gad basin of the Gomati River in the Hindu-Kush Himalayas. The analysis has revealed that if factors other than rainfall remain constant, soil splash erosion from cultivated fields is directly proportional to the rainstorm parameter identified as EI. rainstorm splash erosion Himalayas soil detachment momentum