Abstract
Rill development is a major soil erosion process that causes severe soil degradation. This study examined the effects of representative rainfall intensities (50 and 75 mm h−1), slope gradients (10° and 15°), and slope lengths (7.5 and 10.0 m) on rill development and rill characteristics on loessial hillslopes in China. Loessial soil was collected from the cropland of Ansai Town, Yan’an City, Shaanxi Province. The soil with 28.3% sand, 58.1% silt, and 13.6% clay was packed into a soil pan to conduct rainfall simulations in 2012. The results showed that the time of the knickpoint occurrence (5–16 min), the rill headcut extension (9–33 min), and the mean headward erosion rate (1.7–5.0 cm min–1) were better representative indicators for reflecting the changes in the rill development than other indicators used in this study. For a quick evaluation of the rill erosion severity, the rill coverage ratio (1%–12%, generally increasing with an increase in the rainfall intensity) was better than the other indicators for treatments with different rainfall intensities, and the rill width-depth ratio (1.56–2.27, generally decreasing with an increase in the slope gradient) was better than the other indicators for treatments with different slope gradients. Furthermore, the rill inclination angle (8.2°–19.1°, significantly increasing with an increase in the slope length) and rill density (0.19–1.34 m · m−2, generally increasing with an increase in the slope length) were more suitable for evaluating the rill erosion severity on hillslopes with different slope lengths. Therefore, the representative indicators could reflect the differences in the rill development and rill characteristics under different rainfall and topographic situations. The study greatly improved the evaluation of rill erosion severity and the prediction of the development of rills for loessial hillslopes.
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References
Berger C, Schulze M, Rieke-Zapp D, et al. (2010) Rill development and soil erosion: a laboratory study of slope and rainfall intensity. Earth Surface Processes and Landforms 35: 1456–1467. https://doi.org/10.1002/esp.1989
Bewket W, Sterk G (2003) Assessment of soil erosion in cultivated fields using a survey methodology for rills in the Chemoga watershed, Ethiopia. Agriculture Ecosystem & Environment 97: 81–93. https://doi.org/10.1016/80167-8809(03)00127-0
Bruno C, Di Stefano C, Ferro V (2008) Field investigation on rilling in the experimental Sparacia area, South Italy. Earth Surface Processes and Landforms 33: 263–279. https://doi.org/10.1002/esp.1544
Bryan RB, Poesen J (1989) Laboratory experiments on the influence of slope length on runoff, percolation and rill development. Earth Surface Processes and Landforms 14: 211–231. https://doi.org/10.1002/esp.3290140304
Bryan RB, Rockwell DL (1998) Water table control on rill initiation and implications for erosional response. Geomorphology 23: 151–169. https://doi.org/10.1016/S0169-555X(97)00110-4
Cerdan O, Le Bissonnais Y, Couturier A, et al. (2002) Rill erosion on cultivated hillslopes during two extreme rainfall events in Normandy, France. Soil & Tillage Research 67: 99–108. https://doi.org/10.1016/80167-1987(02)00045-4
Chaplot YAM, Le Bissonnais Y (2003) Runoff features for interrill erosion at different rainfall intensities, slope lengths and gradients in an agricultural loessial hillslope. Soil Science Society of America Journal 67: 844–851. https://doi.org/10.2136/sssaj2003.0844
Chen XY, Huang YH, Zhao Y, et al. (2015) Comparison of loess and purple rill erosions measured with volume replacement method. Journal of Hydrology 530: 476–483. https://doi.org/10.1016/j.jhydrol.2015.10.001
Chen XY, Zhao Y, Mi HX, et al. (2016) Estimating rill erosion process from eroded morphology in flume experiments by volume replacement method. Catena 136: 135–140. https://doi.org/10.1016/j.catena.2015.01.013
Favis-Mortlock D (1998) A self-organizing dynamic systems approach to the simulation of rill initiation and development on hillslopes. Computers & Geosciences 24: 353–372. https://doi.org/10.1016/80098-3004(97)00116-7
Fullen MA (1985) Compaction, hydrological processes and soil erosion on loamy sands in east Shropshire, England. Soil & Tillage Research 6: 17–29. https://doi.org/10.1016/0167-1987(85)90003-0
Gessesse GD, Fuchs H, Mansberger R, et al. (2010) Assessment of erosion, deposition and rill development on irregular soil surfaces using close range digital photogrammetry. The Photogrammetric Record 25(131): 299–318. https://doi.org/10.1111/j.1477-9730.2010.00588
Gilley JE, Kottwitz ER, Simanton JR (1990) Hydraulic characteristics of rills. Transactions of the ASAE 33: 1900–1906. https://doi.org/10.13031/2013.31556
Govindaraju RS, Kawas ML (1994) A spectral approach for analyzing the rill structure over hillslopes. Part 2. Application. Journal of Hydrology 158: 349–362. https://doi.org/10.1016/0022-1694(94)90062-0
He JJ, Lu Y, Gong HL, et al. (2013) Experimental study on rill erosion characteristics and its runoff and sediment yield process. Journal of Hydraulic Engineering 44(4): 398–405 (in Chinese, with English Abstract). https://doi.org/10.13243/j.cnki.slxb.2013.04.005
He JJ, Sun LY, Gong HL, et al. (2016) The characteristics of rill development and their effects on runoff and sediment yield under different slope gradients. Journal of Mountain Science 13(3): 397–404. https://doi.org/10.1007/s11629-015-3490-1
Huo YY, Wu SF, Feng H, et al. (2011) Dynamic process of slope rill erosion based on three-dimensional laser scanner. Science of Soil and Water Conservation 9(2): 32–37 (in Chinese, with English Abstract). https://doi.org/10.3969/j.issn.1672-3007.2011.02.007
Kimaro DN, Poesen J, Msanya BM, et al. (2008) Magnitude of soil erosion on the northern slope of the Uluguru Mountains, Tanzania: Interrill and rill erosion. Catena 75: 38–44. https://doi.org/10.1016/j.catena.2008.04.007
Luk SH, Cai QG, Zhu TX, et al. (1991) Study on process of soil erosion in hilly rolling Loess Region. Soil and Water in China 11: 19–22 (In Chinese, with English Abstract). https://doi.org/10.14123/j.cnki.swcc.1991.11.009
Ludwig B, Boiffin J, Chadoeuf J, et al. (1995) Hydrological structure and erosion damage caused by concentrated flow in cultivated catchments. Catena 25: 227–252. https://doi.org/10.1016/0341-8162(95)00012-H
Mancilla GA, Chen S, McCool DK (2005) Rill density prediction and flow velocity distributions on agricultural areas in the Pacific Northwest. Soil & Tillage Research 84: 54–66. https://doi.org/10.1016/j.still.2004.10.002
Nearing MA, Norton LD, Bulgakov DA, et al. (1997) Hydraulics and erosion in eroding rills. Water Resources Research 33: 865–876. https://doi.org/10.1029/97WR00013
Nord G, Esteves M (2010) The effect of soil type, meteorological forcing and slope gradient on the simulation of internal erosion processes at the local scale. Hydrological Processes 24: 1766–1780. https://doi.org/10.1002/HYP.7613
Polyakov VO, Nearing MA (2003) Sediment transport in rill flow under deposition and detachment conditions. Catena 51: 33–43. https://doi.org/10.1016/80341-8162(02)00090-5
Qin C, Zheng FL, Wells RR, et al. (2018a) A laboratory study of channel sidewall expansion in upland concentrated flows. Soil & Tillage Research 178: 22–31. https://doi.org/10.1016/j.still.2017.12.008
Qin C, Zheng FL, Zhang XC, et al. (2018b) A simulation of rill bed incision processes in upland concentrated flows. Catena 165: 310–319. https://doi.org/10.1016/j.catena.2018.02.013
Rieke-Zapp DH, Nearing MA (2005) Slope shape effects on erosion: A laboratory study. Soil Science Society of America Journal 69: 1463–1471. https://doi.org/10.2136/sssaj2005.0015
Römkens MJM, Helming K, Prasad SN (2002) Soil erosion under different rainfall intensities, surface roughness, and soil water regimes. Catena 46: 103–123. https://doi.org/10.1016/80341-8162(01)00161-8
Rodrigo-Comino J, Wirtz S, Brevik EC, et al. (2017) Assessment of agri-spillways as a soil erosion protection measure in Mediterranean sloping vineyards. Journal of Mountain Science 14(6): 1009–1022. https://doi.org/10.1007/sll629-016-4269-8
Shen HO, Zheng FL, Wen LL, et al. (2015) An experimental study of rill erosion and morphology. Geomorphology 231: 193–201. https://doi.org/10.1016/j.geomorph.2014.11.029
Shen HO, Zheng FL, Wen LL, et al. (2016) Impacts of rainfall intensity and slope gradient on rill erosion processes at loessial hillslope. Soil & Tillage Research 155: 429–436. https://doi.org/10.1016/j.still.2015.09.011
Slattery MC, Bryan RB (1992) Hydraulic conditions for rill incision under simulated rainfall: A laboratory experiment. Earth Surface Processes and Landforms 17: 127–146. https://doi.org/10.1002/esp.3290170203
Su ZG, Xiong DH, Dong YF, et al. (2014) Simulated headward erosion of bank gullies in the Dry-hot Valley Region of southwest China. Geomorphology 204: 532–541. https://doi.org/10.1016/j.geomorph.2013.08.033
Tian P, Xu XY, Pan CZ, et al. (2017) Impacts of rainfall and inflow on rill formation and erosion processes on steep hillslopes. Journal of Hydrology 548: 24–39. https://doi.org/10.1016/j.jhydrol.2017.02.051
Valentin C, Poesen J, Yong L (2005) Gully erosion: Impacts, factors and control. Catena 63: 132–153. https://doi.org/10.1016/j.catena.2005.06.001
Wang LH, Dalabay N, Lu P, et al. (2017) Effects of tillage practices and slope on runoff and erosion of soil from the Loess Plateau, China, subjected to simulated rainfall. Soil & Tillage Research 166: 147–156. https://doi.org/10.1016/j.still.2016.09.007
Wei W, Chen LD, Fu BJ, et al. (2007) The effect of land uses and rainfall regimes on runoff and soil erosion in the semi-arid loess hilly area, China. Journal of Hydrology 335: 247–258. https://doi.org/10.1016/j.jhydrol.2006.ll.016
Wells RR, Bennett SJ, Alonso CV (2009) Effect of soil texture, tailwater height, and pore-water pressure on the morphodynamics of migrating headcuts in upland concentrated flows. Earth Surface Processes and Landforms 34: 1867–1877. https://doi.org/10.1002/esp.1871
Wells RR, Momm HG, Rigby JR, et al. (2013) An empirical investigation of gully widening rates in upland concentrated flows. Catena 101: 114–121. https://doi.org/10.1016/j.catena.2012.10.004
Wirtz S, Seeger M, Ries JB (2012) Field experiments for understanding and quantification of rill erosion processes. Catena 91: 21–34. https://doi.org/10.1016/j.catena.2010.12.002
Wu L, Peng ML, Qiao SS, et al. (2018) Assessing impacts of rainfall intensity and slope on dissolved and adsorbed nitrogen loss under bare loessial soil by simulated rainfalls. Catena 170: 51–63. https://doi.org/10.1016/j.catena.2018.06.007
Xing WM, Yang PL, Ren SM, et al. (2016) Slope length effects on processes of total nitrogen loss under simulated rainfall. Catena 139: 73–81. https://doi.org/10.1016/j.catena.2015.12.008
Yadav RC, Murthy JSR, Bhushan LS (2003) Development of hydrologically optimal land formation practice for gully erosion susceptible ustifluvent soil. Agricultural Water Management 59: 113–135. https://doi.org/10.1016/80378-3774(02)00158-0
Yan DC, Wen AB, Shi ZL, et al. (2010) Critical slope length of rill occurred in purple soil slope cultivated land in Three Gorges Reservior Area. Journal of Yangtze River Scientific Research Institute 27(11): 58–61, 66. (In Chinese, with English Abstract) https://doi.org/10.3969/j.issn.1001-5485.2010.11.012
Zhang FB, Yang MY, Walling DE, et al. (2014) Using 7Be measurements to estimate the relative contributions of interrill and rill erosion. Geomorphology 206: 392–402. https://doi.org/10.1016/j.geomorph.2013.10.012
Zhang QW, Lei TW, Huang XJ (2017) Quantifying the sediment transport capacity in eroding rills using a REE tracing method. Land Degradation & Development 28: 591–601. https://doi.org/10.1002/ldr.2535
Zheng FL, Tang KL (1997) Rill erosion process on steep slope land of the Loess Plateau. International Journal of Sediment Research 12: 52–59. https://doi.org/10.16239/j.cnki.0468-155x.1997.01.005
Acknowledgement
The study was funded by the National Natural Science Foundation of China (Grant Nos. 41571263, 41601281, 41761144060); and the External Cooperation Program of Chinese Academy of Sciences (Grant No. 161461KYSB20170013).
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Shen, Ho., Zheng, Fl., Wang, L. et al. Effects of rainfall intensity and topography on rill development and rill characteristics on loessial hillslopes in China. J. Mt. Sci. 16, 2299–2307 (2019). https://doi.org/10.1007/s11629-019-5444-5
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DOI: https://doi.org/10.1007/s11629-019-5444-5