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Effects of vegetation and physicochemical properties on solute transportin reclaimed soil at an opencast coal mine site on the Loess Plateau, China
Zhen,Q(Zhen,Qing)[1,3]; Ma,WM(Ma,Wenmei)[2]; Li,MM(Li,Mingming)[5]; He,HH(He,Honghua)[1,2]; Zhang,XC(Zhang,Xingchang)[1,2]; Wang,Y(Wang,Yi)[4]
2015
Source PublicationCatena
Volume133Issue:2015Pages:403-411
Subtype期刊论文
Abstract

Mine soils are often polluted and degraded. The objectives of this study were to assess the effects of soil properties and vegetation on soil solute transport in reclaimed soil at an opencast coal mine site on the Loess Plateau. Four reclaimed areas with different vegetation types were selected for the analysis of physical and chemical properties. The miscible displacement technique was used to obtain the breakthrough curves (BTCs) of NO3- ion transport in undisturbed soil columns, which were taken from the soil profiles of the different sites. The chemical properties, such as total N, P, K and SOM, exhibited low contents, and the soil physicochemical properties showed high heterogeneity between different depths and different reclaimed areas. The structural stability index was less than 5%. The initial and entire penetration times were longer in the deeper layers than in the top layer. The BTCs of NO3- were fitted well by the deterministic equilibrium convection dispersion equation (CDE) model. Preferential flow and transport were found in the soil columns. The reclaimed soil had poor structure, and planting vegetation improved the physiochemical properties of the soil. The soil solute transport parameters exhibited high heterogeneity between different samples and were significantly correlated with soil bulk density and soil texture, which were highly influenced by vegetation and human activities. In the process of land reclamation, increasing the bulk density and selecting fine-textured soils could reduce the average soil pore water velocity and the dispersivity coefficient, thereby extending the solute penetration time.

KeywordReclaimed Soil Soil Properties Solute Transport Btc Vegetation
DOI10.1016/j.catena.2015.06.009
Indexed BySCI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9460
Collection生态环境研究室
Affiliation1.State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling,Shaanxi 712100, China;
2.Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, China;
3.University of Chinese Academy of Sciences, Beijing 100049, China;
4.State key Laboratory of Loess and Quaternary, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China;
5.College of Environment and Planning, Henan University, Kaifeng, Henan 475001, China
Recommended Citation
GB/T 7714
Zhen,Q,Ma,WM,Li,MM,et al. Effects of vegetation and physicochemical properties on solute transportin reclaimed soil at an opencast coal mine site on the Loess Plateau, China[J]. Catena,2015,133(2015):403-411.
APA Zhen,Q,Ma,WM,Li,MM,He,HH,Zhang,XC,&Wang,Y.(2015).Effects of vegetation and physicochemical properties on solute transportin reclaimed soil at an opencast coal mine site on the Loess Plateau, China.Catena,133(2015),403-411.
MLA Zhen,Q,et al."Effects of vegetation and physicochemical properties on solute transportin reclaimed soil at an opencast coal mine site on the Loess Plateau, China".Catena 133.2015(2015):403-411.
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