Flood Effect on Groundwater Recharge on a Typical Silt Loam Soil

Floods are of great concern as the global climate changes, and investigations of flood water infiltration and groundwater recharge are important for water resource management worldwide, especially under conditions of global climate changes. However, information on the relationship between the flood...

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Main Authors: Guohua Zhang, Gary Feng, Xinhu Li, Congbao Xie, Xiaoyu Pi
Format: Article
Language:English
Published: MDPI AG 2017-07-01
Series:Water
Subjects:
Online Access:https://www.mdpi.com/2073-4441/9/7/523
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spelling doaj-28989355f5df4438be77f1cf41f2df032020-11-24T23:40:14ZengMDPI AGWater2073-44412017-07-019752310.3390/w9070523w9070523Flood Effect on Groundwater Recharge on a Typical Silt Loam SoilGuohua Zhang0Gary Feng1Xinhu Li2Congbao Xie3Xiaoyu Pi4China Irrigation and Drainage Development Center, Beijing 210054, ChinaUSDA-Agricultural Research Service, Starkville, MS 39762, USAState Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, Xinjiang, ChinaChina Irrigation and Drainage Development Center, Beijing 210054, ChinaThe Water Service Bureau of Chaoyang of Beijing City, Beijing 100026, ChinaFloods are of great concern as the global climate changes, and investigations of flood water infiltration and groundwater recharge are important for water resource management worldwide, especially under conditions of global climate changes. However, information on the relationship between the flood water and groundwater recharge is limited. The objective of this study was to determine the relationship between the flood water depth and the height of groundwater rise using lysimeters and numerical modeling in the floodplain of the Tarim River in northwestern China. The experimental results suggested that the rise in height of the groundwater table was closely related to the flood water ponding depth, and the groundwater depth decreased quickly after flooding due to the high infiltration rate of water originating at the Tarim River. The water table falling velocity was significantly less than the water table rising velocity. If the initial groundwater table was deeper, the variation in the water table rise depth was smaller and the water table falling velocity was slower. The numerical simulation results showed good agreement with the observed data, with a determination coefficient (R2) of 0.87 and a root mean square error (RMSE) of 63.91 cm. A good relationship (R2 = 0.789) between the initial groundwater table depth (H0), initial soil water content (W0), flood water depth (h), and height of the water table rise (H) was established. Considering that natural and artificial flood frequencies are related to flood time interval (dt), a relationship (R2 = 0.892) was developed between them. These results can enhance the understanding of flood recharge characteristics in the floodplains of inland rivers.https://www.mdpi.com/2073-4441/9/7/523arid landfloodgroundwater rechargeinland riverlysimeter
collection DOAJ
language English
format Article
sources DOAJ
author Guohua Zhang
Gary Feng
Xinhu Li
Congbao Xie
Xiaoyu Pi
spellingShingle Guohua Zhang
Gary Feng
Xinhu Li
Congbao Xie
Xiaoyu Pi
Flood Effect on Groundwater Recharge on a Typical Silt Loam Soil
Water
arid land
flood
groundwater recharge
inland river
lysimeter
author_facet Guohua Zhang
Gary Feng
Xinhu Li
Congbao Xie
Xiaoyu Pi
author_sort Guohua Zhang
title Flood Effect on Groundwater Recharge on a Typical Silt Loam Soil
title_short Flood Effect on Groundwater Recharge on a Typical Silt Loam Soil
title_full Flood Effect on Groundwater Recharge on a Typical Silt Loam Soil
title_fullStr Flood Effect on Groundwater Recharge on a Typical Silt Loam Soil
title_full_unstemmed Flood Effect on Groundwater Recharge on a Typical Silt Loam Soil
title_sort flood effect on groundwater recharge on a typical silt loam soil
publisher MDPI AG
series Water
issn 2073-4441
publishDate 2017-07-01
description Floods are of great concern as the global climate changes, and investigations of flood water infiltration and groundwater recharge are important for water resource management worldwide, especially under conditions of global climate changes. However, information on the relationship between the flood water and groundwater recharge is limited. The objective of this study was to determine the relationship between the flood water depth and the height of groundwater rise using lysimeters and numerical modeling in the floodplain of the Tarim River in northwestern China. The experimental results suggested that the rise in height of the groundwater table was closely related to the flood water ponding depth, and the groundwater depth decreased quickly after flooding due to the high infiltration rate of water originating at the Tarim River. The water table falling velocity was significantly less than the water table rising velocity. If the initial groundwater table was deeper, the variation in the water table rise depth was smaller and the water table falling velocity was slower. The numerical simulation results showed good agreement with the observed data, with a determination coefficient (R2) of 0.87 and a root mean square error (RMSE) of 63.91 cm. A good relationship (R2 = 0.789) between the initial groundwater table depth (H0), initial soil water content (W0), flood water depth (h), and height of the water table rise (H) was established. Considering that natural and artificial flood frequencies are related to flood time interval (dt), a relationship (R2 = 0.892) was developed between them. These results can enhance the understanding of flood recharge characteristics in the floodplains of inland rivers.
topic arid land
flood
groundwater recharge
inland river
lysimeter
url https://www.mdpi.com/2073-4441/9/7/523
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