Abstract
Rainfall runoff is a critical hydrological process related to soil erosion and agricultural non-point pollution. In this study, 25 simulation experiments on rainfall were carried out in five runoff plots. Rape (Brassica campestris) was planted on the downslope of the plots. Experiments were conducted when the vegetation coverage reached 80%. Each plot was subjected to five rainfall events differing in intensity. The results showed: (1) the runoff coefficients of overland flow and subsurface flow were less than 0.6 and 0.005, respectively; (2) the discharge of overland flow was the quadratic function of time; (3) runoff coefficient was the function of slope gradient and rainfall intensity. When the slope gradient increased from 8.7% to 46.6%, the runoff coefficient of overland flow first increased and then decreased. The runoff coefficient reached the maximum when the slope gradient was within the range of 17.6%–36.4%; and (4) the process of subsurface flow generation included the increasing phase and recession phase. Discharge was a logarithm function of time in the increasing phase, and an exponential function in the recession phase. Runoff coefficient of subsurface flow decreased first and then increased when the slope gradient varied from 8.7% to 46.6% and was not correlated with rainfall intensity.
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References
Agassi M. and Shainberg J. (1985) Effect of raindrop impact energy and water salinity on infiltration rates of sodic soils1 [J]. Soil Science Society of America Journal. 49, 186–190.
Bradford J.M. and Huang C.H. (1992) Mechanisms of Crust Formationl Physical Components [C]. pp.55–72. Paper presented at International Symposium on oil Crusting, Proceedings of the 1st International Symposium on Soil Crusting. Advances in Soil Science, Lewis Publishers.
Cai Qiangguo and Wu Shuan (1998) Effect of different land uses on soil and water erosion processes on purple steep slopeland [J]. Bulletin of Soil and Water Conservation. 18, 1–9 (in Chinese with English abstract).
Chen Xiaoyan, He Binghui, Miao Chiyuan, and Wu Yong (2003) Study on application of WEPP model for sloping surface erosion prediction in purple soil [J]. Journal of Soil and Water Conservation. 17, 42–46 (in Chinese with English abstract).
Cheng Hao and Cai Qiangguo (1990) The effect of slope on the runoff depth and infiltration capacity. In Experimental Researches on the Law of Soil Erosion in the Loess Plateau Region, West Shaanxi [M]. China WaterPower Press, Beijing (in Chinese).
Cheng Yibing (1995) Study on soil erodibility of different soils [J]. Bulletin of Soil and Water Conservation. 15, 46–50 (in Chinese with English abstract).
Guo Wei, Shi Zhihua, Chen Liding, and Li Zhaoxia (2007) Effects of topsoil aggregate size on runoff and erosion at hillslope in red soils [J]. Acta Ecologica Sinica. 14, 118–121 (in Chinese with English abstract).
He Yurong and Cheng Xuehua (2003) Purple Soil in China (2) [M]. Science Press, Beijing (in Chinese).
Jin Changxing, Cai Qiangguo, and Wang Zhongke (1995) An experimental study of infiltration and erosion under slope gradients and vegetal covers [J]. Journal of Geographical Sciences. 4, 62–73 (in Chinese with English abstract).
Janeau J.L., Briquet J.P., Planchon O., and Valentin C. (2003) Soil crusting and infiltration on steep slopes in northern Thailand [J]. European Journal of Soil Science. 54, 543–554.
Jia Haiyan and Lei Alin (2006) Nitrate-N loss effected by the runoff process in purple soil: A simulation study [J]. Acta Sci. Circumstantiate. 26, 1658–1664.
Laflen J.M., Lwonard J.L., and Foster G.R. (1991) WEPP: A new generation of erosion prediction technology [J]. Journal of Soil and Water Conservation. 46, 34–38.
Liu Gangcai, Tian Guanglong, Shu Dongcai, Lin Sanyi, and Liu Shuzhen (2005) Characteristics of surface runoff and through flow in a purple soil of southwestern China under various rainfall events [J]. Hydrol. Processes. 19, 1883–1891.
Lu Xixi, Shi Xuezheng, and Yu Dongsheng (1995) Study on soil infiltration by simulating rainfall in low hilly region of South China [J]. Journal of Soil and Water Conservation. 9, 1–8 (in Chinese with English abstract).
Miao Chiyuan, He Binghui, and Chen Xiaoyan (2005) Application and comparison of the erosion models USLE and WEPP in predicting erosion of purple soil [J]. Transactions of the CSAE. 21, 13–15 (in Chinese with English abstract).
Morgan R.P.C., Quinton J.N., Smith R.E., Govers G., Poesen J.W.A., Auerswald K., Chisci G., Torri D., and Styczen M.E. (1998) The European Soil Erosion Model (EUROSEM): A dynamic approach for predicting sediment transport from fields and small catchments [J]. Earth Surface Processes and Landforms. 23, 527–544.
Poesen J. (1986) Surface sealing as influenced by slope angle and position of simulated stones in the top layer of loose sediments [J]. Earth Surface Processes and Landforms. 11, 1–10.
Shi Shengxin (1992) A testing study of factors affecting infiltration rate under artificial rainfall with high intensity [J]. Bulletin of Soil and Water Conservation. 12, 49–54 (in Chinese with English abstract).
Sun Feida, Jiang Zhirong, and Wang Li (2005) Study on sediment and yield runoff of farm lands under different intensities of rainfall [J]. Journal of Gansu Sciences. 17, 53–56 (in Chinese with English abstract).
Wang Hong, Cai Qiangguo, and Zhu Yuanda (2003) Evaluation of the EUROSEM model for predicting water erosion on steep slopeland in the Three Gorges Reservoir area, China [J]. Geographical Research. 22, 579–589 (in Chinese with English abstract).
Xu Pei, Wang Yukuan, and Fu Bin (2008) Experimental research on the influence of two cultivation practices on rainfall runoff and sediment-generating processes in purple soil environment [J]. Chinese Journal of Geochemistry. 27, 370–376.
Xiang Hua, Liu Qingquan, and Li Jiachun (2004) Influences of slope surface conditions on the runoff generation [J]. Journal of Hydrodynamics. 19, 774–782 (in Chinese with English abstract).
Zhu Bo, Peng Kui, and Xie Hongmei (2006) Nitrogen balance of agro-ecosystem in a typical watershed in the hilly area of central Sichuan Basin [J]. Chinese Journal of Eco-Agriculture. 14, 108–111 (in Chinese with English abstract).
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Xu, P., Fu, B. The runoff characteristics under simulated rainfall on purple soil sloping cropland. Chin. J. Geochem. 30, 317–322 (2011). https://doi.org/10.1007/s11631-011-0515-5
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DOI: https://doi.org/10.1007/s11631-011-0515-5