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The effect of interactions between particles on soil infiltrability
Ding, Wuquan1,2; Liu, Xinmin1; Hu, Feinan1,3; Zhu, Hualing1; Luo, Yaxue1; Li, Song1; Tian, Rui1; Bao, Bing4; Li, Hang1
2019-10-01
Source PublicationJOURNAL OF SOILS AND SEDIMENTS
ISSN1439-0108
Volume19Issue:10Pages:3489-3498
Corresponding AuthorLiu, Xinmin(lucimir@163.com) ; Li, Hang(lihangswu@163.com)
AbstractPurpose Soil infiltrability is an important topic in environmental and agricultural research and influences plant growth, soil erosion and water runoff. In this study, the influences of interactions between soil particles on soil infiltrability were investigated in different MgCl2 and NaCl solutions. Materials and methods We selected an entisol soil in Chongqing, China. The soil samples were saturated with Na+ and Mg2+: each air-dried sample was weighed into a 5-L beaker and washed three times with NaCl and MgCl2 and then deionised water, respectively. The cationic saturated soil samples were then dried at 333 K, crushed and passed through a 1-mm sieve. For water infiltration, the Na- or Mg-saturated soil samples were added and packed to a bulk density of 1.05 g cm(-3) in a rectangular acrylic glass column (20 cm x 3 cm(2)). The NaCl or MgCl2 solution was selected to leach the soil column with a constant water head, and the depth of the wetted front was recorded at 150 min. For the computed tomography scan, the circular columns of Na- and Mg-saturated soil were wetted by 0.01 mol L-1 NaCl and MgCl2 solutions, respectively, and then were determined by computed tomography scanner when the position of wetting front reached 3 cm. Results and discussion Soil with relatively weak electrostatic repulsion had a net attractive force, which leads to the unbroken soil aggregate and high infiltrability. The calculated net forces at the critical concentration in MgCl2 (0.005 mol L-1) and NaCl (0.25 mol L-1) were attractive and the measured soil infiltrability reached maximum value. The calculations of particle-particle interaction forces also showed that, when the soil aggregate did not break down, the electrostatic repulsive forces caused the soil aggregate to "swell", which decreased the soil infiltrability. The "swelling" strength in the Mg2+ solution was much weaker than that in the Na+ solution, and the experimentally observed infiltrability values in Mg2+ were much higher than that in Na+ for soil with the same non-breaking aggregates. Conclusions Soil infiltrability was determined by the electrostatic interactions at the soil/water interfaces, which was generated from the net surface charges of soil particles. The net force between soil particles can be repulsive because of the strong electrostatic repulsion, which results in aggregate breakdown and low infiltrability of soils.
KeywordSoil aggregate Soil electric field Surface potential Water movement
DOI10.1007/s11368-019-02318-2
WOS KeywordSALT-SOLUTIONS METHOD ; HYDRAULIC CONDUCTIVITY ; MICA SURFACES ; ELECTROLYTE CONCENTRATION ; COLLOIDAL PARTICLES ; INTERACTION FORCES ; HYDRATION FORCES ; DOUBLE-LAYER ; SHEAR PLANE ; PERMEABILITY
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41101223] ; National Natural Science Foundation of China[41530855] ; National Natural Science Foundation of China[41877026] ; Natural Science Foundation Project of CQ CSTC[cstc2018jcyjAX0354] ; Natural Science Foundation Project of CQ CSTC[cstc2018jcyjAX0318] ; Young Elite Scientist Sponsorship Program by CAST[2015QNRC001] ; Scientific and Technological Research Program of Chongqing Municipal Education Commission[KJ1501115] ; International Science and Technology Cooperation Program of China[2015DFR70390]
Funding OrganizationNational Natural Science Foundation of China ; Natural Science Foundation Project of CQ CSTC ; Young Elite Scientist Sponsorship Program by CAST ; Scientific and Technological Research Program of Chongqing Municipal Education Commission ; International Science and Technology Cooperation Program of China
WOS Research AreaEnvironmental Sciences & Ecology ; Agriculture
WOS SubjectEnvironmental Sciences ; Soil Science
WOS IDWOS:000485945000006
PublisherSPRINGER HEIDELBERG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/69508
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLiu, Xinmin; Li, Hang
Affiliation1.Southwest Univ, Coll Resources & Environm, Chongqing Key Lab Soil Multiscale Interfacial Pro, Chongqing 400716, Peoples R China
2.Chongqing Univ Arts & Sci, Chongqing Key Lab Environm Mat & Remediat Technol, Chongqing 402168, Peoples R China
3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shanxi, Peoples R China
4.Chongqing Landscape & Gardening Res Inst, Chongqing 401329, Peoples R China
Recommended Citation
GB/T 7714
Ding, Wuquan,Liu, Xinmin,Hu, Feinan,et al. The effect of interactions between particles on soil infiltrability[J]. JOURNAL OF SOILS AND SEDIMENTS,2019,19(10):3489-3498.
APA Ding, Wuquan.,Liu, Xinmin.,Hu, Feinan.,Zhu, Hualing.,Luo, Yaxue.,...&Li, Hang.(2019).The effect of interactions between particles on soil infiltrability.JOURNAL OF SOILS AND SEDIMENTS,19(10),3489-3498.
MLA Ding, Wuquan,et al."The effect of interactions between particles on soil infiltrability".JOURNAL OF SOILS AND SEDIMENTS 19.10(2019):3489-3498.
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