Journal of Soils and Sediments

, Volume 10, Issue 6, pp 1200–1208 | Cite as

Effect of surface stone cover on sediment and solute transport on the slope of fallow land in the semi-arid loess region of northwestern China

  • Tailong Guo
  • Quanjiu WangEmail author
  • Dingqiang Li
  • Jie Zhuang



In the semi-arid loess region of northwestern China, use of stone and gravel as mulch has been an indigenous farming technique for improving crop production for over 300 years. However, systematic studies on the effects of stone covers on soil and water conservation have been rarely conducted, except for a few investigations and documentations on the stone cover effects on erosion and solute transport in such a highly erodible loess region.

Materials and methods

We experimentally examined the effects of surface stone cover on sediment erosion and solute transport using the water-scouring method on sloping land in a semi-arid region in China, which had been left fallow with alfalfa (Medicago sativa) for 3 years. All covered stones rested on the soil surface, and none were partly or completely embedded in the soil surface layer. Stone cover percentages were classified into three groups: 0% (no stone cover, the control treatment), 5.1%, and 20.8%. Two sizes of stones, SCA (7.6 × 7.6 cm) and SCB (18.4 × 18.4 cm), were used in the treatment of 5.1% stone cover. A dye method was used to measure flow velocities in the experiments. Each stone treatment had one replicate.

Results and discussion

The surface cover by stones influenced soil erosion processes, runoff generation, and solute transport. Runoff rate and sediment yield decreased as stone cover percentages increased from zero (no stone cover) to 20.8%. The effect of stone sizes on the runoff was not significant, whereas stone size type SCA caused lower sediment yield than SCB at the same stone cover percentage of 5.1%. Likewise, water flow velocity and the Froude numbers also decreased with increasing stone cover percentage. The Manning roughness increased with increasing stone cover percentage, ranging from 0.0296 to 0.0579 m−1/3 s. But the Reynolds numbers among different stone cover percentages and sizes remained nearly the same with a small variation from 483 to 486.


The study implied that stone cover percentage and size have important influences on sediment and solute concentration in runoff. Surface-covering stones reduced the velocity of runoff, increased surface roughness, decreased sediment yield in runoff, and consequently reduced the quantities of solute release from soil surface.


Flow hydraulics Soil erosion Solute transport Stone size Surface stone cover 



This work was partially supported by the CAS/SAFEA International Partnership Program for Creative Research Teams-Process simulation of soil and water of a watershed, the Special Foundation for Science and Technology Project of Guangdong Province (2008A080800028), the National Natural Science Foundation of China (90502006;40871140), the Youth Foundation of The Guangdong Province Academy of Sciences (qnjj200810), the Director Foundation of State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau (10501-252), Important National Science and Technology Specific Projects (2009ZX07211-002), and the Special Foundation for Science and Technology Project of Guangdong Province (2009A080303008). We thank for the assistance of Institute of Soil and Water Conservation, Chinese Academy of Sciences. Wenjuan Bai is acknowledged for her indispensable assistance.


  1. Abrahams AD, Parsons AJ (1990) Determining the mean depth of flow in field studies of flow hydraulics. Water Resour Res 26:501–503CrossRefGoogle Scholar
  2. Abrahams AD, Parsons AJ (1991) Relation between infiltration and stone cover on a semiarid hillslope, southern Arizona. J Hydrol 122:49–59CrossRefGoogle Scholar
  3. Abrahams AD, Parsons AJ, Luk SH (1986) Resistance to overland flow on desert hillslopes. J Hydrol 88:343–363CrossRefGoogle Scholar
  4. Abrahams AD, Li G, Krishnan C, Atkinson JF (1998) Predicting sediment transport by interrill overland flow on rough surfaces. Earth Surf Process Landf 23:481–492CrossRefGoogle Scholar
  5. Abrahams AD, Gao P, Aebly FA (2000) Relation of sediment transport capacity to stone cover and size in rain-impacted interrill flow. Earth Surf Process Landf 25:497–504CrossRefGoogle Scholar
  6. Abrahams AD, Li G, Krishnan C, Atkinson JF (2001) A sediment transport equation for interrill overland flow on rough surfaces. Earth Surf Process Landf 26:1443–1459CrossRefGoogle Scholar
  7. Adams JE (1966) Influence of mulches on runoff, erosion, and soil moisture depletion. Soil Sci Soc Am Proc 30:110–114CrossRefGoogle Scholar
  8. Agassi M, Levy GJ (1991) Stone-cover and rain intensity: effects on infiltration, erosion and water splash. Aust J Soil Res 29:565–575CrossRefGoogle Scholar
  9. Barros AP, Colello JD (2001) Surface roughness for shallow overland flow on crushed stone surfaces. J Hydraul Eng 127:38–52CrossRefGoogle Scholar
  10. Bertrand AR, Barnett AP, Rogers JS (1964) The influence of soil physical properties on runoff, erosion, and infiltration of some soils in the southeastern United States. Transactions of the 8th Internationa1 Congress of Soil Science. Buchar 11:663–677Google Scholar
  11. Blackburn WH (1975) Factors influencing infiltration and sediment production of semiarid rangelands in Nevada. Water Resour Res 11:929–937CrossRefGoogle Scholar
  12. Box JE (1981) The effects of surface slaty fragments on soil erosion by water. Soil Sci Soc Am J 45:111–116CrossRefGoogle Scholar
  13. Cerda A (1999) Parent material and vegetation affect soil erosion in eastern Spain. Soil Sci Soc Am J 63:362–368CrossRefGoogle Scholar
  14. Cerda A (2001) Effects of rock fragment cover on soil infiltration, interrill runoff and erosion. Eur J Soil Sci 52:59–68CrossRefGoogle Scholar
  15. Chow TL, Rees HW (1995) Effects of coarse-fragment content and size on soil erosion under simulated rainfall. Can J Soil Sci 75:227–232Google Scholar
  16. Chow TL, Rees HW, Moodie RL (1992) Effects of stone removal and stone crushing on soil properties, erosion and potato quality. Soil Sci 153:242–249CrossRefGoogle Scholar
  17. Cousin I, Nicoullaud B, Coutadeur C (2003) Influence of rock fragments on the water retention and water percolation in a calcareous soil. Catena 53:97–114CrossRefGoogle Scholar
  18. Dunkerley DL (1995) Surface stone cover on desert hillslopes; parameterizing characteristics relevant to infiltration and surface runoff. Earth Surf Process Landf 20:207–218CrossRefGoogle Scholar
  19. Dunkerley DL (2003a) Organic litter: dominance over stones as a source of interrill flow roughness on low-gradient desert slopes at fowlers gap, arid western NSW, Australla. Earth Surf Process Landf 28:15–29CrossRefGoogle Scholar
  20. Dunkerley DL (2003b) Determining friction coefficients for interrill flows: the significance of flow filaments and backwater effects. Earth Surf Process Landf 28:475–491CrossRefGoogle Scholar
  21. Epstein E, Grant WJ, Struchmeyer RA (1966) Effects of stones on runoff, erosion and soil moisture. Soil Sci Soc Am Proc 30:638–645CrossRefGoogle Scholar
  22. Gale WJ, McColl RW, Fang X (1993) Sandy fields traditional farming for water conservation in China. J Soil Water Conserv 48:474–477Google Scholar
  23. Grant WJ, Struchmeyer RA (1959) Influence of the coarse fraction in two main potatoes soils on infiltration, runoff and erosion. Soil Sci Soc Am Proc 30:391–396CrossRefGoogle Scholar
  24. Hide JC (1954) Observations on factors influencing the evaporation of soil moisture. Soil Sci Soc Am Proc 18:234–239CrossRefGoogle Scholar
  25. Hung KC, Kosugi KI, Lee TH, Misuyama T (2007) The effects of rock fragments on hydrologic and hydraulic responses along a slope. Hydrol Process 21:1354–1362CrossRefGoogle Scholar
  26. Iverson RM (1980) Processes of accelerated pluvial erosion on desert hillslopes modified by vehicular traffic. Earth Surf Process Landf 5:369–388Google Scholar
  27. Jiin-Shuh J, Koe-Fe A, Kaimin S, Chao-chi H (2000) Stone cover and slope factors influencing hillside surface runoff and infiltration: laboratory investigation. Hydrol Process 14:1829–1849CrossRefGoogle Scholar
  28. Jung L (1960) The influence of the stone cover on runoff and erosion of slate soil. Int Assoc Sci Hydr General Assembly 30:143–152, Helsinki NoGoogle Scholar
  29. Katra I, Lavee H, Sarah P (2008) The effect of rock fragment size and position on topsoil moisture on arid and semi-arid hillslopes. Catena 72:49–55CrossRefGoogle Scholar
  30. Lamb JJ, Chapman JG (1943) Effect of surface stones on erosion, evaporation, soil temperature and soil moisture. J Am Soc Agric 35:567–572Google Scholar
  31. Lavee H, Poesen J (1991) Overland flow generation and continuity on stone-covered soil surfaces. Hydrol Process 5:345–360CrossRefGoogle Scholar
  32. Li XY (2000) Soil and water conservation in arid and semiarid area: the Chinese experience. Ann Arid Zone 39(4):377–393Google Scholar
  33. Li XY (2003) Gravel-sand mulch for soil and water conservation in the semiarid loess region of northwest China. Catena 52:105–127CrossRefGoogle Scholar
  34. Li XY, Liu LY (2003) Effect of gravel mulch on Aeolian dust accumulation in the semiarid region of northwest China. Soil Tillage Res 70:73–81CrossRefGoogle Scholar
  35. Li G, Abrahams AD, Atkinson JF (1996) Correction factors in the determination of mean velocity of overland flow. Earth Surf Process Landf 21:509–515CrossRefGoogle Scholar
  36. Li XY, Contreras S, Sole-Benet A (2008) Unsaturated hydraulic conductivity in limestone dolines: influence of vegetation and rock fragments. Geoderma 145:288–294CrossRefGoogle Scholar
  37. Mandal UK, Rao KV, Mishra PK, Vittal KPR, Sharma KL, Narsimlu B, Venkanna K (2005) Soil infiltration, runoff and sediment yield from a shallow soil with varied stone cover and intensity of rain. Eur J Soil Sci 56:435–443CrossRefGoogle Scholar
  38. Martinez-Zavala L, Jordan A (2008) Effect of rock fragment cover on interrill soil erosion from bare soils in Western Andalusia, Spain. Soil Use Manage 24:108–117CrossRefGoogle Scholar
  39. Mehuys GR, Stolzy LH, Letey J, Weeks LV (1975) Effect of stones on the hydraulic conductivity of relatively dry desert soils. Soil Sci Soc Am Proc 39:37–42CrossRefGoogle Scholar
  40. Miller FT, Guthrie RL (1984) Classification and distribution of soils containing rock fragments in the United States. In: Nichols JD, Brown PL, Grand WJ (eds) Erosion Productivity of Soils Containing Rock Fragments, Special Publication No 13, Soil Sci Soc Am J, Madison, WI, pp 1–6Google Scholar
  41. Norman RJ, Edberg JC, Stucki JW (1985) Determination of nitrate in soil extracts by dual-wavelength ultraviolet spectrophotometry. Soil Sci Soc Am J 49:1182–1185CrossRefGoogle Scholar
  42. Nyssen J, Haile M, Poesen J, Deckers J, Moeyersons J (2001) Removal of rock fragments and its effect on soil loss and crop yield, Tigray, Ethiopia. Soil Use Manage 17:179–187CrossRefGoogle Scholar
  43. Poesen J, Lavee H (1994) Rock fragments in top soils: significance and processes. Catena 23:1–28CrossRefGoogle Scholar
  44. Poesen J, Ingelmo-Sanchez F, Mucher H (1990) The hydrological response of soil surfaces to rainfall as affected by cover and position of rock fragments in the top layer. Earth Surf Process Landf 15:653–671CrossRefGoogle Scholar
  45. Ravina I, Magier J (1984) Hydraulic conductivity and water retention of clay soils containing coarse fragments. Soil Sci Soc Am J 48:736–740CrossRefGoogle Scholar
  46. Rieke-Zapp D, Poesen J, Nearing MA (2007) Effects of rock fragments incorporated in the soil matrix on concentrated flow hydraulics and erosion. Earth Surf Process Landf 32:1063–1076CrossRefGoogle Scholar
  47. Sauer TJ, Logsdon SD (2002) Hydraulic and physical properties of stony soils in a small watershed. Soil Sci Soc Am J 66:1947–1956CrossRefGoogle Scholar
  48. Simanton JR, Renard KG (1982) Seasonal change in infiltration and erosion from USLE plots in southeastern Arizona. Hydrol Water Resour Ariz Southwest 12:37–46Google Scholar
  49. Tromble JM (1976) Semiarid rangeland treatment and surface runoff. J Range Manag 29:251–255CrossRefGoogle Scholar
  50. Valentin C, Casenave A (1992) Infiltration into sealed soils as influenced by gravel cover. Soil Sci Soc Am J 56:1667–1673CrossRefGoogle Scholar
  51. Veihe A, Quinton J, Poesen J (2000) Sensitivity analysis of EUROSEM using Monte Carlo simulation II: the effect of rills and rock fragments. Hydrol Process 14:927–939CrossRefGoogle Scholar
  52. Verbist K, Baetens J, Cornelis WM, Gabriels D, Torres C, Soto G (2009) Hydraulic conductivity as influenced by stoniness in degraded dryland of Chile. Soil Sci Soc Am J 73:471–484CrossRefGoogle Scholar
  53. Walton RS, Volker RE, Bristow KL, Smettem KRJ (2000) Experimental examination of solute transport by surface runoff from low-angles slopes. J Hydrol 233:19–36CrossRefGoogle Scholar
  54. Wesemael BV, Poesen J, Figueirdo TD (1995) Effects of rock fragments on physical degradation of cultivated soils by rainfall. Soil Tillage Res 33:229–250CrossRefGoogle Scholar
  55. Wesemael BV, Mulligan M, Poesen J (2000) Spatial patterns of soil water balance on intensively cultivated hillslopes in a semi-arid environment: the impact of rock fragments and soil thickness. Hydrol Process 14:1811–1828CrossRefGoogle Scholar
  56. Wilcox BP, Wood MK, Tromble JM (1988) Factors influencing infiltrability of semiarid mountain slopes. J Range Manag 41:197–206CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Tailong Guo
    • 1
    • 2
  • Quanjiu Wang
    • 2
    • 3
    Email author
  • Dingqiang Li
    • 1
  • Jie Zhuang
    • 4
  1. 1.Guangdong Institute of Eco-environment and Soil ScienceGuangdong Key Laboratory of Comprehensive Control of Agro-environmentGuangzhouPeople’s Republic of China
  2. 2.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water ConservationChinese Academy of SciencesYangLingPeople’s Republic of China
  3. 3.Xian University of TechnologyXianPeople’s Republic of China
  4. 4.Department of Biosystems Engineering and Soil Science, Institute for a Secure and Sustainable Environment, Center for Environmental BiotechnologyUniversity of TennesseeKnoxvilleUSA

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