Watershed and Urban Hydrological Processes

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Hydrology".

Deadline for manuscript submissions: closed (30 September 2022) | Viewed by 3293

Special Issue Editor

Special Issue Information

Dear Colleagues,

This Special Issue covers soil erosion in arid regions, hydroecology, geological hazards, watershed hydrological models, and extreme hydrological events under climate change, providing an advanced forum for watershed and urban hydrological processes. Our goal is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Research papers must provide complete experimental and/or methodological details. Computational data or documents with full details of the experimental procedure that cannot be published in the normal manner may be retained as supplementary material.

Prof. Dr. Aidi Huo
Guest Editor

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Keywords

  • hydrological analysis
  • watershed hydrological models
  • climate change
  • extreme hydrology
  • hydroecology
  • control schemes

Published Papers (2 papers)

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Research

17 pages, 7431 KiB  
Article
Hydrodynamic Behaviors and Geochemical Evolution of Groundwater for Irrigation in Yaoba Oasis, China
by Ting Lu, Aidi Huo, Jucui Wang, Yudong Lu and Weibo Zhou
Water 2022, 14(23), 3924; https://doi.org/10.3390/w14233924 - 2 Dec 2022
Cited by 1 | Viewed by 1212
Abstract
The Yaoba Oasis is an irrigated cropland entirely dependent on groundwater; previous investigations (1980–2015) revealed an over-abstraction of groundwater and deteriorating groundwater quality. For further exploring the hydrodynamic behaviors and geochemical processes of groundwater during the irrigation season, groundwater samples were collected and [...] Read more.
The Yaoba Oasis is an irrigated cropland entirely dependent on groundwater; previous investigations (1980–2015) revealed an over-abstraction of groundwater and deteriorating groundwater quality. For further exploring the hydrodynamic behaviors and geochemical processes of groundwater during the irrigation season, groundwater samples were collected and analyzed using different techniques including classical statistics, correlation analysis, Piper diagrams, and Gibbs diagrams. The results indicated that Na+, K+, SO42− and Cl were the main ions in groundwater, which were significantly correlated with TDS. The water–rock interaction is manifested by the precipitation of calcite and dolomite and the dissolution of rock salt and gypsum as an increase in TDS related to evaporation. In addition, the increasing complexity of hydrochemical type is caused by the rapid variation of hydrodynamic regime, irrigation and evaporation, which are subjected to the constraints of salty water intrusion from the desert salty lake and infiltration of irrigation return flow. Existing wells should limit overexploitation to halt the decline in groundwater levels and cut down irrigation water to reduce the risk of groundwater contamination and restore ecological balance in desert oasis. Full article
(This article belongs to the Special Issue Watershed and Urban Hydrological Processes)
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12 pages, 2810 KiB  
Article
Impact of Mountain Reservoir Construction on Groundwater Level in Downstream Loess Areas in Guanzhong Basin, China
by Jia Zhang, Aidi Huo, Zhixin Zhao, Luying Yang, Jianbing Peng, Yuxiang Cheng and Zhoufeng Wang
Water 2022, 14(9), 1470; https://doi.org/10.3390/w14091470 - 4 May 2022
Cited by 4 | Viewed by 1701
Abstract
An accurate understanding of the relationship between reservoir construction and the dynamic change of groundwater level in downstream areas is of great significance for rational development and utilization of water resources. At present, the research on the interaction between surface water (SW) and [...] Read more.
An accurate understanding of the relationship between reservoir construction and the dynamic change of groundwater level in downstream areas is of great significance for rational development and utilization of water resources. At present, the research on the interaction between surface water (SW) and groundwater (GW) mainly focuses on the interaction between river and GW. There are few studies on the impact of the reservoir construction on GW level in downstream loess irrigation area. Rainfall, evaporation and climate temperature have a great impact on W level, but the impact of reservoir construction on the GW level should not be ignored in the utilization of water resources. In this paper, a GW flow model under a natural boundary was established by numerical simulation. Taking Heihe Jinpen Reservoir in Heihe River watershed as the research object, the influence of the construction of a mountain reservoir on the dynamic change of GW level in the downstream loess region is studied. By comparing the GW level under the natural state without reservoir construction and the measured GW level after the reservoir was built, the variation of the GW depth in the loess area of the lower reaches in the Heihe River watershed is obtained. The results show that simulation accuracy of the interaction between SW and GW was reasonable; after the Heihe Jinpen Reservoir construction, the mean GW level decrease was about 6.05 m in the downstream loess irrigation area in Guanzhong Basin. It provides a method for the simulation and prediction of SW–GW conversion laws. This study is also of great significance to explore the change law of the water cycle and improve the utilization rate of water resources. Full article
(This article belongs to the Special Issue Watershed and Urban Hydrological Processes)
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