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23 August 2018 A review of preferential water flow in soil science
Yinghu Zhang, Zhenming Zhang, Ziwen Ma, Jingxiao Chen, Jalaluddin Akbar, Shuyan Zhang, Chunguang Che, Mingxiang Zhang, Artemi Cerdà
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Abstract

A better understanding of preferential water flow is important because water-related crises, i.e., water scarcity and security, are strongly associated with water retention rates in different landscapes. This review aims to evaluate significant advances in the main themes of preferential water flow to establish the inconsistent roles of preferential water flow in eco-hydrology and suggest promising areas for future work. Results showed that preferential water flow studies have made significant advances in our understanding of certain parameters functioning at multiple scales but that most studies focus on preferential water flow in the vadose zone, whereas few studies on the soil surface. Preferential water flow can have a positive effect on averting water crises, such as when it affects surface runoff soil erosion, soil formation as ecosystem services, nutrient cycling in root zone, and overall water regulation of the water cycle. Conversely, preferential water flow can have a negative effect on eco-hydrological issues via slope stability, gully erosion, geological disaster, waste treatment, water supply in root zone, and food production. Our review concludes that more information is required on preferential water flow before we can assess its role in mitigating water-related crisis events.

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Yinghu Zhang, Zhenming Zhang, Ziwen Ma, Jingxiao Chen, Jalaluddin Akbar, Shuyan Zhang, Chunguang Che, Mingxiang Zhang, and Artemi Cerdà "A review of preferential water flow in soil science," Canadian Journal of Soil Science 98(4), 604-618, (23 August 2018). https://doi.org/10.1139/cjss-2018-0046
Received: 14 April 2018; Accepted: 14 August 2018; Published: 23 August 2018
JOURNAL ARTICLE
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KEYWORDS
eau
écoulement préférentiel de l’eau
hydrologie du sol
preferential water flow
soil
soil hydrology
sol
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