污水灌溉下土壤孔隙特征的CT定量分析

郭晓明; 马腾; 陈柳竹; 刘林

doi:10.3799/dqkx.2015.170

Volume 40 Issue 11

Nov. 2015

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Guo Xiaoming, Ma Teng, Chen Liuzhu, Liu Lin, 2015. Quantitative Analysis of Soil Pores under Sewage Irrigation Using Computerized Tomography. Earth Science, 40(11): 1896-1903. doi: 10.3799/dqkx.2015.170

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Guo Xiaoming, Ma Teng, Chen Liuzhu, Liu Lin, 2015. Quantitative Analysis of Soil Pores under Sewage Irrigation Using Computerized Tomography. Earth Science, 40(11): 1896-1903. doi: 10.3799/dqkx.2015.170

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Quantitative Analysis of Soil Pores under Sewage Irrigation Using Computerized Tomography

doi: 10.3799/dqkx.2015.170

Guo Xiaoming^{1, 2
,},
Ma Teng^{2
,
,},
Chen Liuzhu²,
Liu Lin^{2, 3}

1.
College of Resources and Environment, Henan Polytechnic University, Jiaozuo 454003, China
2.
State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China
3.
Nanjing Center, China Geological Survey, Nanjing 210016, China

Received Date: 2015-03-22
Publish Date: 2015-11-15

Abstract

Abstract

The suspension solids, salts and organic nutrients in sewage efflunts can significantly affect soil porosity condition. Based on the laboratory simulation and computed tomography, the numbers of soil pores, porosity and shape were quantitatively studied under the condition of irrigation with sewage. The results show that the soils irrigated with sewage effluents exhibited higher total pore numbers and macropore numbers(≥1.00 mm in diameter) in the upper layer but lower total pore numbers, macropore numbers, coarse pore numbers (0.26-1.00 mm in diameter), total porosity, macroporosity and coarse porosity in the subsoil layer when compared with the soils irrigated with groundwater (p < 0.05). Under the condition of irrigation with suspension or with salt solution, total pore numbers, coarse pore numbers and coarse porosity increased, while macropore numbers, total porosity, macroporosity and cycle rate decreased. Under the condition of irrigation with nutrient solution, total pore numbers, macropore numbers, coarse pore numbers and coarse porosity increased, while macroporosity and cycle rate decreased. For the soil in the study fields, the effect of irrigation with suspension on the soil pores was stronger than that with salt solution. For the same irrigation with suspension or with salt solution, the effect of sewage irrigation on pores in groundwater irrigated soils was stronger than that in sewage irrigated soils.
- sewage irrigation,
- soil pore,
- computed tomography,
- farmland,
- environmental geology.

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References(32)

References

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Quantitative Analysis of Soil Pores under Sewage Irrigation Using Computerized Tomography

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