Characteristics and controls of solute transport under different conditions of soil texture and vegetation type in the waterewind erosion crisscross region of China's Loess Plateau
文献类型：期刊论文
| 作者 | Pei, Yanwu1,2; Huang, Laiming1,3; Li, Danfeng1,3; Shao, Mingan1,2,3 |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2021-06-01 |
| 卷号 | 273页码:10 |
| 关键词 | Solute transport Soil texture Vegetation type Loess plateau |
| ISSN号 | 0045-6535 |
| DOI | 10.1016/j.chemosphere.2021.129651 |
| 通讯作者 | Huang, Laiming(huanglm@igsnrr.ac.cn) |
| 英文摘要 | The analysis of solute transport characteristics in soil is of great significance in understanding nutrient cycling and pollutant migration in the Earth's Critical Zone. The objective of this study was to investigate the transport characteristics and the influencing factors of Cl- in soils with different textures (sandy-S and loamy-L), and covered by different vegetation types (arbor-AR, shrub-SH and grass-GR) in the water ewind erosion crisscross region of the northern Loess Plateau of China. Results showed that the initial penetration time (TS: 12-80 min), entire penetration time (TE: 75-480 min), average flow velocity in the pore (V: 0.52-1.98 cm h(-1)) and the hydrodynamic diffusion coefficient (D: 0.75-2.55 cm(2) h(-1)) of Cl- varied with different soil textures and vegetation types, and at different soil depths. The V and D associated with Cl- transport were highest in the 0e20 cm soil layer and decreased with increasing depth, while the opposite trend was observed for TS and TE. For the 0-1 m soil profile of the same texture but covered by different vegetation types, the average V and D followed the order of S-AR > S-GR > S- SH and L-AR > L-SH > L-GR, while the average TS and TE exhibited the exact opposite order. This behavior is caused by the varying distributions of root biomass under different vegetation types that affect the number of macropores, the connectivity density and the preferential flow paths in the soil. For the 0-1m soil profiles of different textures covered by the same vegetation type, the average V and D followed the order of S-AR > L-AR; S-SH > L-SH; and S-GR > L-GR, while the average TS and TE showed the opposite trend. This is because the pore size and distribution in soil are significantly affected by soil mechanical composition. There are significant correlations between soil properties (e.g., bulk density, number of macropores, pore connectivity density, saturated hydraulic conductivity, soil organic carbon content and particle composition) and the transport parameters (e.g., V, TS, and TE). The pedotransfer functions using readily available soil properties can adequately predict V of Cl- transport under different conditions of soil texture and vegetation type. These results provide guidance for the rational configuration of artificial vegetation in different textural soils with respect to reduce nutrient loss and improve ecosystem functions in the northern Loess Plateau of China. (C) 2021 Elsevier Ltd. All rights reserved. |
| WOS关键词 | CONVECTION-DISPERSION EQUATION ; COAL-MINE SITE ; VERTICAL-DISTRIBUTION ; MATHEMATICAL-MODEL ; PREFERENTIAL FLOW ; INORGANIC CARBON ; SURFACE RUNOFF ; BREAKTHROUGH ; MACROPORES ; PROFILE |
| 资助项目 | Chinese Academy of Sciences[XDA23070202] ; National Natural Science Foundation of China[41601221] ; Second Tibetan Plateau Scientific Expedition and Research (STEP) Program[2019QZKK0306] ; Ministry of Science and Technology of China[2016YFC0501605] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2019052] ; Bingwei Outstanding Young Talent Project from the Institute of Geographical Sciences and Natural Resources Research[2017RC203] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000641584000072 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | Chinese Academy of Sciences ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research (STEP) Program ; Ministry of Science and Technology of China ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Bingwei Outstanding Young Talent Project from the Institute of Geographical Sciences and Natural Resources Research |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/161598]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Huang, Laiming |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Northwest A&F Univ, Coll Nat Resources & Environm, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pei, Yanwu,Huang, Laiming,Li, Danfeng,et al. Characteristics and controls of solute transport under different conditions of soil texture and vegetation type in the waterewind erosion crisscross region of China's Loess Plateau[J]. CHEMOSPHERE,2021,273:10. |
| APA | Pei, Yanwu,Huang, Laiming,Li, Danfeng,&Shao, Mingan.(2021).Characteristics and controls of solute transport under different conditions of soil texture and vegetation type in the waterewind erosion crisscross region of China's Loess Plateau.CHEMOSPHERE,273,10. |
| MLA | Pei, Yanwu,et al."Characteristics and controls of solute transport under different conditions of soil texture and vegetation type in the waterewind erosion crisscross region of China's Loess Plateau".CHEMOSPHERE 273(2021):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
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