Soil Susceptibility to Macropore Flow Across a Desert-Oasis Ecotone of the Hexi Corridor, Northwest China
文献类型：期刊论文
| 作者 | Zhang, Yongyong1; Zhao, Wenzhi1; He, Jianhua2; Fu, Li3 |
| 刊名 | WATER RESOURCES RESEARCH
 |
| 出版日期 | 2018-02-01 |
| 卷号 | 54期号:2页码:1281-1294 |
| 关键词 | cultivation desert-oasis region dye tracer macropore flow irrigation space for time substitution |
| ISSN号 | 0043-1397 |
| DOI | 10.1002/2017WR021462 |
| 通讯作者 | Zhang, Yongyong(zhangxyz23@126.com) |
| 英文摘要 | Macropore flow not only provides a fast pathway for water and solute transport and increases the risks of water and nutrient loss but also enhances soil aeration and groundwater recharge. However, macropore flow characteristics in irrigated oasis soils subject to continuous crop cultivation are poorly understood. This study was to investigate the effect of continuous cultivation on soil properties and macropore flow and to quantify the changes in macropore flow characteristics in an old oasis field (>50 years of cultivation, OOF), young oasis field (20 years, YOF), and adjacent uncultivated sandy area (0 year, USL) in Northwest China. Triplicate soil samples were collected from each site to investigate soil properties. Dye tracer experiments with also three replicates were conducted at each site. The degree of macropore flow (i.e., parameters of macropore flow) was highest at the OOF, intermediate at the YOF, and minimal at the USL. The macropore flow fraction (i.e., fraction of total infiltration flows through macropore flow pathways) at the OOF was 3.4 times greater than at the USL. The heterogeneous infiltration pattern at the OOF was dominated by macropore flow, while funnel flow was predominant at the USL. Long-term irrigation with silt-laden river water has increased silt+clay contents of the oasis soils. Irrigation and high-input crop cultivation also increased organic matter. These changes in soil properties contributed to the interaggregate voids formation. The conversion of native desert soils to irrigated croplands increases the degree of macropore flow, which might enhance groundwater recharge in the desert-oasis ecotone. |
| 收录类别 | SCI |
| WOS关键词 | RAY COMPUTED-TOMOGRAPHY ; BRILLIANT BLUE FCF ; PREFERENTIAL FLOW ; SOLUTE TRANSPORT ; CONSERVATION TILLAGE ; HYDRAULIC-PROPERTIES ; WATER-FLOW ; GROUNDWATER RESOURCES ; PADDY SOILS ; DYE TRACER |
| WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
| WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000428474500034 |
| 出版者 | AMER GEOPHYSICAL UNION |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558141 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Zhang, Yongyong |
| 作者单位 | 1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Linze Inland River Basin Res Stn, Lanzhou, Gansu, Peoples R China 2.Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou, Gansu, Peoples R China 3.Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yongyong,Zhao, Wenzhi,He, Jianhua,et al. Soil Susceptibility to Macropore Flow Across a Desert-Oasis Ecotone of the Hexi Corridor, Northwest China[J]. WATER RESOURCES RESEARCH,2018,54(2):1281-1294. |
| APA | Zhang, Yongyong,Zhao, Wenzhi,He, Jianhua,&Fu, Li.(2018).Soil Susceptibility to Macropore Flow Across a Desert-Oasis Ecotone of the Hexi Corridor, Northwest China.WATER RESOURCES RESEARCH,54(2),1281-1294. |
| MLA | Zhang, Yongyong,et al."Soil Susceptibility to Macropore Flow Across a Desert-Oasis Ecotone of the Hexi Corridor, Northwest China".WATER RESOURCES RESEARCH 54.2(2018):1281-1294. |
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来源：寒区旱区环境与工程研究所
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