Response of soil water movement and groundwater recharge to extreme precipitation in a headwater catchment in the North China Plain

Zheng, Wenbo; Wang, Shiqin; Sprenger, Matthias; Liu, Bingxia; Cao, Jianhua

doi:10.1016/j.jhydrol.2019.06.071

Cited by 69 publications

(21 citation statements)

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“…3 ). This observation may be attributed to the influence of rainfall with negative δ D values, suggesting that precipitation heavily shapes the isotopic compositions of soil water 43 , 48 , 49 . In addition, we found the SWC and δ D of surface soil displayed larger variances than those of deep soil.…”

Section: Discussionmentioning

confidence: 99%

Effects of thinning and understory removal on the soil water-holding capacity in Pinus massoniana plantations

Wang

Gao

et al. 2021

Sci Rep

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Forest management practices play an important role in regulating the soil water-holding capacity of plantation. However, most studies focus on soil water dynamics present during large-scale forest loss and afforestation events, while little is known about how soil water under different forest management practices responds to rainfall events and which factors mainly regulate soil water-holding capacity. In this study, a stable hydrogen isotope was used to explore the contribution of three natural rainfall events (8.9, 13.3 and 67.7 mm) to soil water (CRSW) in a Pinus massoniana plantation under four forest management practices (no thinning (NTN), understory removal (USR), light-intensity thinning (LIT) and heavy-intensity thinning (HIT)) in the Three Gorges Reservoir Area of the Yangtze River Basin in China. Furthermore, a structural equation model was employed to determine the effects of vegetation biomass and soil properties on the CRSW. The results showed that plantation soil under different forest management practices exhibited different water-holding capacities. Following light (8.9 mm) and moderate (13.3 mm) rainfall events, the CRSW in the HIT stand was slightly higher than that in the other stands. Following heavy (66.7 mm) rainfall event, the CRSW of most layers in USR stand was not different from the other three stands, while the CRSW in the LIT and NTN stands was significantly higher than that in the HIT stand in the 0–100 cm soil layers, suggesting that soil in the LIT and NTN stands had a greater water-holding capacity than that in the HIT stand. In addition, soil properties were the main factors directly affecting the CRSW, explaining 60% and 37% of the variation in the CRSW on the first and seventh days after heavy rainfall, respectively. Overall, compared to the HIT stand, the LIT and NTN stands showed greater capacity in retaining rainwater. Therefore, under expected global changes with frequent occurrences of extreme precipitation events, methods involving light-intensity and no thinning should be employed to build up soil and water conservation functions, which will be critical for keeping water-holding capacity and moderating floods.

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Section: Discussionmentioning

confidence: 99%

Effects of thinning and understory removal on the soil water-holding capacity in Pinus massoniana plantations

Wang

Gao

et al. 2021

Sci Rep

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“…Flow within the UZ occurs in two principal modes: diffuse flow through a succession of typically microscopic pores of the bulk medium, and rapid preferential flow spatially concentrated in fractures, wormholes, and other relatively direct (i.e., preferential) paths that constitute a small volume fraction of the porous media. Rapid UZ responses can significantly influence the degree and timing of 1) runoff and infiltration, 2) stormflow response of streams, and 3) subsurface transmission of water and solutes (Ebel and Loague, 2008;Gurdak et al, 2008;Zheng et al, 2019). These processes can in turn determine the extent and severity of flooding, landslides, and contamination hazards as well as the magnitude of aquifer recharge (Luo et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Rapid-Response Unsaturated Zone Hydrology: Small-Scale Data, Small-Scale Theory, Big Problems

et al. 2021

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The unsaturated zone (UZ) extends across the Earth’s terrestrial surface and is central to many problems related to land and water resource management. Flow of water through the UZ is typically thought to be slow and diffusive, such that it could attenuate fluxes and dampen variability between atmospheric inputs and underlying aquifer systems. This would reduce water resource vulnerability to contaminants and water-related hazards. Reducing or negating that effect, however, spatially concentrated and rapid flow and transport through the unsaturated zone is surprisingly common and becoming more so with the increasing frequency and magnitude of extreme hydroclimatic events. Arising from the wide range in the rates and complex modes of nonlinear flow processes, these effects are among the most poorly characterized hydrologic phenomena. Issues of scale present additional difficulties. Equations representing unsaturated processes have been developed and tested on the basis of field and laboratory measurements typically made at scales from pore size to plot size. In contrast, related problems of significant interest to society, including floods, aquifer recharge, landslides, and groundwater contamination, range from watershed to regional scales. The disparity between the scale of our understanding and the scale of interest for societal problems has spurred application of these model equations at increasingly coarse resolutions over larger areas than can be justified by existing measurements or theory. This mismatch in scales requires an assumption that spatially averaging slow diffusive flow and rapid preferential flow can effectively represent the influence of both processes across vast areas. Given the currently inadequate recognition and quantitative characterization of focused and rapid processes in unsaturated flow, these phenomena are critically in need of expanded attention and effort.

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“…De otro lado, en relación a la recarga directa y difusa, que caracteriza a los acuíferos libres, las condiciones de textura y tasas de infiltración determinan magnitudes diferenciales en la función de la recarga. Establecer estas diferencias puede jugar un papel fundamental para armonizar planes de manejo de zonas de recarga con planes de ordenamiento territorial [36] [37] [38].…”

Section: Discussionunclassified

Delimitación de las potenciales zonas de recarga-caso de estudio: acuífero multicapa del eje bananero del Urabá Antioqueño-Colombia

et al. 2020

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El conocimiento del Modelo Hidrogeológico Conceptual permite adoptar y adaptar un procedimiento adecuado para cada caso de estudio, considerando acuíferos libres y acuíferos confinados, teniendo en cuenta las diferencias estructurales entre rocas duras, rocas blandas y depósitos no consolidados; y evaluando el rol de la textura y la capacidad de infiltración del suelo, en la dimensión de la función de la recarga directa. Para el sistema hidrogeológico del Eje Bananero del Urabá Antioqueño- Colombia la tarea de entender la recarga puso de manifiesto la necesidad de establecer una escala de calificación para evaluar el factor estructural en rocas blandas y depósitos no consolidados y definir categorías de importancia, basados en propiedades texturales y tasas de infiltración para las zonas de recarga directa difusa en acuíferos libres; también se determinó un procedimiento para delimitar zonas asociadas a las unidades hidrogeológicas que subrayasen a los acuíferos confinados.

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Response of soil water movement and groundwater recharge to extreme precipitation in a headwater catchment in the North China Plain

Cited by 69 publications

References 50 publications

Effects of thinning and understory removal on the soil water-holding capacity in Pinus massoniana plantations

Effects of thinning and understory removal on the soil water-holding capacity in Pinus massoniana plantations

Rapid-Response Unsaturated Zone Hydrology: Small-Scale Data, Small-Scale Theory, Big Problems

Delimitación de las potenciales zonas de recarga-caso de estudio: acuífero multicapa del eje bananero del Urabá Antioqueño-Colombia

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