Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.catena.2011.12.009 |
How the Quaternary climatic change affects present hydrogeological system on the Chinese Loess Plateau: A case study into vertical variation of permeability of the loess-palaeosol sequence | |
Zhao, Jingbo1,2; Long, Tengwen1; Wang, Changyan1; Zhang, Yun1 | |
通讯作者 | Zhao, Jingbo |
来源期刊 | CATENA |
ISSN | 0341-8162 |
出版年 | 2012 |
卷号 | 92页码:179-185 |
英文摘要 | This article systematically investigated permeability, porosity, carbonate mass percentage, and magnetic susceptibility of representative loess-palaeosol layers (from L-1 to S-4) on the Chinese Loess Plateau, based on analysing a sequence on the Luochuan Yuan (tableland) as a case study. The results of in situ permeability measurements illustrate that average infiltration rate of loess layers is higher than that of palaeosol layers, and that average time for the loess layers to reach quasi-steady infiltration is longer than that of palaeosol layers. In addition, loess layers have higher porosity than palaeosols on average, and it is suggested as a major reason why the loess layers have a higher permeability on average, despite complex nature of different types of the interspaces. Higher porosity (i.e. more interspaces for storing moisture/water) of the loess layers is largely determined by lower intensity of pedogenesis of loess, which is in turn ascribed to the colder/drier palaeoclimatic conditions. The difference of permeability between loess and palaeosol layers facilitates the loess units more likely to be aquifers. In this regard, the Quaternary climatic change theory can make a contribution to hydrogeology of the Chinese Loess Plateau, and the regional climatostratigraphy can be regarded as a baseline for local water resource positioning and revegetation in such a semi-arid area. (C) 2012 Elsevier B.V. All rights reserved. |
英文关键词 | Loess-palaeosol sequence Permeability Porosity Palaeoclimatic change Groundwater resource Chinese Loess Plateau |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000301876300020 |
WOS关键词 | MAGNETIC-SUSCEPTIBILITY ; GRAIN-SIZE ; GROUNDWATER ; EVOLUTION ; DEPOSITS ; HISTORY ; DUST |
WOS类目 | Geosciences, Multidisciplinary ; Soil Science ; Water Resources |
WOS研究方向 | Geology ; Agriculture ; Water Resources |
来源机构 | 中国科学院地球环境研究所 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/171718 |
作者单位 | 1.Shaanxi Normal Univ, Coll Tourism & Environm, Xian, Shaanxi, Peoples R China; 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Shaanxi, Peoples R China |
推荐引用方式 GB/T 7714 | Zhao, Jingbo,Long, Tengwen,Wang, Changyan,et al. How the Quaternary climatic change affects present hydrogeological system on the Chinese Loess Plateau: A case study into vertical variation of permeability of the loess-palaeosol sequence[J]. 中国科学院地球环境研究所,2012,92:179-185. |
APA | Zhao, Jingbo,Long, Tengwen,Wang, Changyan,&Zhang, Yun.(2012).How the Quaternary climatic change affects present hydrogeological system on the Chinese Loess Plateau: A case study into vertical variation of permeability of the loess-palaeosol sequence.CATENA,92,179-185. |
MLA | Zhao, Jingbo,et al."How the Quaternary climatic change affects present hydrogeological system on the Chinese Loess Plateau: A case study into vertical variation of permeability of the loess-palaeosol sequence".CATENA 92(2012):179-185. |
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