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, JB (Zhao, Jingbo)[1,2]; Long, TW (Long, Tengwen)[1]; Wang, CY (Wang, Changyan)[1]; Zhang, Y (Zhang, Yun)[1]
2012-05-01
发表期刊CATENA
卷号92页码:179-185
文章类型期刊论文
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.

关键词Loess–palaeosol Sequence Permeability Porosity Palaeoclimatic Change Groundwater Resource Chinese Loess Plateau
DOI10.1016/j.catena.2011.12.009
收录类别SCI
语种英语
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/10177
专题黄土与第四纪地质国家重点实验室(2010~)
通讯作者Zhao, JB (Zhao, Jingbo)[1,2]
作者单位1.College of Tourism and Environment, Shaanxi Normal University, Xi'an, Shaanxi, China;
2.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, Shaanxi, China
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Zhao, JB ,Long, TW ,Wang, CY ,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]. CATENA,2012,92:179-185.
APA Zhao, JB ,Long, TW ,Wang, CY ,&Zhang, Y .(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, JB ,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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