Structural Characteristics and Stability of the Aggregates in the Orchard Soils with Different Cultivation Years in Northern China

Abstract:

With dry sieving and wet sieving methods, we studied the distribution characteristics and stability of the aggregates in the typical orchard soils with different cultivation years in northern China under long-term freezing-thawing conditions. The results show that: the contents of the aggregates with particle size above 10 mm or between 0.25 and 10 mm are significantly increased with cultivation years and annual growth rates were respectively 1.28% and 0.078%. Fractal dimension in the orchard soils was gradually decreased and lower than that in uncultivated area near the orchard in corresponding cultivation year. MWD of orchard soils shows annual increasing trend of 0.76%. The content of the water stable macro aggregates in orchard soils was increased with the cultivation years and was about 11.65%-20.18% higher than that of uncultivated soils near the orchard. Average annual growth of orchard soils was 0.37%. Fractal dimension was decreased year by year on the water stable macro aggregates. MWD of the water stable macro aggregates was significantly greater than that of uncultivated soils near the orchard and increased with cultivation years. Aggregate destruction rate was gradually decreased to 31.61% of that in the 60^th year and annual average decrease rate was 0.91%. Soil bulk density was gradually decreased.

• Periodical: Advanced Materials Research (Volumes 864-867)
• Pages: 2569-2576
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.864-867.2569
• Online since: December 2013
• Authors: Wen Li Liu, Jing Gui Wu*, Xin Yu Zhao
• Keywords: Cultivation Years, Fractal Dimension, Orchard Soil, Soil Aggregate

References

[1] Z. X. Zhu, Soil science (In Chinese). Beijing: Agriculture Press, (1983).

[2] S.W. Duiker, D. C Flanagan, L. R. La, Readability and infiltration characteristics of five major soils of southwest Spain, Catena. 45(2001) 103-121.

DOI: 10.1016/s0341-8162(01)00145-x

[3] F. J. Stevenson, Humus chemistry, John Willey and Sons, New York, 1982, 374-402.

[4] R. E. Yoder, A direct method of aggregate analysis of soils and a study of the physical nature of erosion losses, Journal of the American Society o f Agronomy. 28(1936) 337-351.

DOI: 10.2134/agronj1936.00021962002800050001x

[5] D. M. Fox and Y. Le, Process-based analysis of aggregate stability effects on sealing, infiltration and interrill erosion, Soil Science Society of America Journal. 62(1998) 717-724.

DOI: 10.2136/sssaj1998.03615995006200030025x

[6] R. B. Bryan, Soil erodibility and process of water erosion on hill slopes, Geomorphology. 3(2000) 385-415.

[7] W. M. White, Dry Aggregate Distribution. In: Carter MR ed. Soil Sampling and Methods of Analysis. Canadian Society of Soil Science. Boca Raton, FL: Lewis Publishers, Division of CRC Press. 1993, 659-662.

[8] D. A. Angers ,G. R. Mehuys, Aggregate Stability to Water. In: Carter MR ed. Soil Sampling and Methods of Analysis. Canadian Society of Soil Science. Boca Raton, FL: Lewis Publishers, Division of CRC Press. 1993, 653-655.

DOI: 10.1201/9781420005271.ch62

[9] D. L. Turcotte, Fractal fragmentation, Geography Research. 91 (1986) 1921-(1926).

[10] A. J. Katz , A. H. Thompson, Fractal sandstone pores: Implication for conductivity and pore formation, Physical Review Letters. 54 (1985) 1325-1328.

DOI: 10.1103/physrevlett.54.1325

[11] S. W. Tyler, S. W. Wheatcraft, WApplication of fractal mathematics to soil water retention estimation, Soil Sci. Soc. Am. J. 53(1989) 987-996.

DOI: 10.2136/sssaj1989.03615995005300040001x

[12] S. P. Neuman, Universal scaling of hydraulic conductivities and dispersivities in geologic media, Water Resour. Res. 26(1990) 1749-1758.

DOI: 10.1029/wr026i008p01749

[13] I. M. Young, J. W. Crawford, C. Rappoldt, New mthods and models for characterizing structural heterogeneity of soil, Soil & Tillage Research. 61(2001) 33-45.

DOI: 10.1016/s0167-1987(01)00188-x

[14] C. H. M. Van Bavel, Mean weight-diameter of soil aggregates as a statistical index of aggregation, Soil Science Society of America Journal . 14(1949) 20-23.

DOI: 10.2136/sssaj1950.036159950014000c0005x

[15] E. T. Elliott, Aggregate structure and carbon, nitrogen, and phosphorus in native and cultivated soils, Soil Sci. Soc. Am. J. 50(1986) 627–633.

DOI: 10.2136/sssaj1986.03615995005000030017x

[16] J. Six , H. Bossuyt, A history of research on the link between miero-aggregates，soil1biota，and soil organic matter dynamics. soil&TillageReseareh. 79(2004) 7-31.

DOI: 10.1016/j.still.2004.03.008

[17] J. R. Nimmo, K. S. Perkins, Methods of soil analysis, part 4 – physical methods, Soil Science Society of America. 2002, 317-328.

[18] Z. Alagoz , E. Yilmaz, Effects of different sources of organic matter on soil aggregate form at ion and stability: A laboratory study on a Lithic Rhodoxeralf from Turkey, Soil and Tillage Research. 103(2009) 419－429.

DOI: 10.1016/j.still.2008.12.006