The influence of clay content, organic carbon and land use types on soil aggregate stability and tensile strength

被引：0

作者：

Kavdir, Yasemin ^{[1
]}

Özcan, Hasan ^{[1
]}

Ekinci, Hüseyin ^{[1
]}

Yiǧini, Yusuf ^{[1
]}

Yüksel, Orhan ^{[2
]}

机构：

[1] Canakkale Onsekiz Mart University, Agricultural Faculty, Soil Science Department

[2] Canakkale Onsekiz Mart University, Bayramiç Vocational School, Bayramiç-Çanakkale

来源：

Turkish Journal of Agriculture and Forestry | 2004年 / 28卷 / 03期

关键词：

Clay content; GIS; Organic carbon; Soil aggregate stability; Tensile strength;

D O I：

10.3906/tar-0310-5

中图分类号：

学科分类号：

摘要：

Soil tensile strength (TS) and aggregate stability (AS) values can be used as indicators of soil structural quality. The objective of this study was to determine the influences of land use types, soil carbon and clay contents on soil structure. Soil samples were collected from 51 different locations from the Kumkale Basin in Çanakkale in April and July 2003. A global positioning system (GPS) was used to determine the coordinates of sampling points. TS, AS, soil organic carbon (SOC), and clay contents were determined. Results of soil analysis and coordinates of sampling points were transferred to the Arc View geographical information systems (GIS) program. Multiple regression analysis showed that TS was positively related (r2 = 0.89 and 0.92 in April and July, respectively) to clay content when SOC was high. The water stable aggregates in pasture soils were approximately 10 times more water stable than those in other agricultural soils in the region. In general, wet AS was more sensitive to cropping and management systems than TS. Soil AS rose with increasing soil SOC content while TS of soil aggregates was mostly influenced by clay content. However, the effect of clay content on aggregate TS rose with increasing SOC conten.

引用

页码：155 / 162

页数：7

共 31 条

[1]

Angers D.A., Edwards L.M., Sanderson J.B., Bissonnette N., Soil organic matter quality and aggregate stability under eight potato cropping sequences in a fine sandy loam of Prince Edward Island, Can. J. Soil Sci., 79, pp. 411-417, (1999)

[2]

Bouyoucos G.J., A recalibration of the hydrometer method for making mechanical analyses of soil, Agr. J., 43, pp. 434-438, (1951)

[3]

Chan K.Y., Hulugalle N.R., Changes in some soil properties due to tillage practices in rainfed hardsetting Alfisols and irrigated Vertisols of Eastern Australia, Soil Tillage Res., 53, pp. 49-57, (1999)

[4]

Christensen B.T., Physical fractionation of soil and organic matter in primary particle size and density separates, Adv. Soil Sci., 20, pp. 1-90, (1992)

[5]

Coote D.R., Malcolm-McGovern C.A., Wall G.J., Dickinson W.T., Rudra R.P., Seasonal variation of erodibility indices based on shear strength and aggregate stability in some Ontario soils, Can. J. Soil Sci., 68, pp. 405-416, (1988)

[6]

Dexter A.R., Kroesbergen B., Methodology for determination of tensile strength of soil aggregates, J. Agric. Eng. Res., 31, pp. 139-147, (1985)

[7]

Dexter A.R., Advances in characterization of soil structure, Soil Tillage Res., 11, pp. 199-238, (1988)

[8]

Dexter A.R., Watts C.W., Tensile strength and friability, Soil and Environmental Analysis. Physical Methods, pp. 401-430, (2000)

[9]

Dormaar J.F., Chemical properties of soil and water-stable aggregates after sixty-seven years of cropping to spring wheat, Plant Soil., 75, pp. 51-61, (1983)

[10]

Using Arcview GIS, (1996)

← 1 2 3 4 →