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Water Science Research in South China University of Technology: Commemorating...
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Water Science Research in South China University of Technology: Commemorating the University’s 70th Anniversary

A special issue of Water (ISSN 2073-4441).

Deadline for manuscript submissions: closed (31 October 2023) | Viewed by 3958

Special Issue Editors

Prof. Dr. Zhaoli Wang

E-Mail Website1 Website2 Website3
Guest Editor
School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, China
Interests: remote sensing of water science; hydrology; water resources; climate change; big data; AI; urban flood and control; sponge city
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Binzhen Zhou

E-Mail Website
Guest Editor
School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, China
Interests: wave energy; hydrodynamics; wave–structure interaction; hybrid ocean renewable energy system; focused wave
Prof. Dr. Guoru Huang

E-Mail Website
Guest Editor
School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, China
Interests: urban hydrology; urban flood and control; sponge city; water hydrological model; climate change
Prof. Dr. Chengguang Lai

E-Mail Website
Guest Editor
School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, China
Interests: urban hydrology; urban flood; flood risk assessment; machine learning; big data in water conservancy
Prof. Dr. Xiangju Cheng

E-Mail Website
Guest Editor
School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, China
Interests: hydraulics and river dynamics; environmental and ecological hydraulics; pollution control and ecological restoration of rivers, lakes, reservoirs, ponds
Special Issues, Collections and Topics in MDPI journals
Dr. Zhaoyang Zeng

E-Mail Website
Guest Editor
School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, China
Interests: urban flood; compound flood; hydrodynamic model; extreme precipitation; sea level rise; climate change; urbanization; storm surge
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Water is the source of life and an indispensable substance in human life. However, against the backdrop of global climate change and growing urbanization processes, many problems related to water become more and more nonnegligible, including water resources, water security, the water environment, water ecology fields, and growing threats from water issues, greatly influencing the lives and property of residents and sustainable socioeconomic development. Therefore, water issues need to be further investigated, and researchers are needed to explore more findings and propose guidance to help to better control these problems.

On the occasion of the 70th anniversary of South China University of Technology (SCUT), the Editorial Department of Water Journal is cooperating with the Water Science Team of SCUT to set up a special Issue which focuses on research referring to the study fields of water resources, water security, the water environment, water ecology, and water waves. We invite scholars and graduate students from around the world to submit full texts of their unpublished manuscripts to our Special Issue. The research contents can cover (but are not limited to) hydrological processes; water resources management; water ecology protection; water environment simulation; low-impact development and sponge city; urban and basin flood simulation and control; and ocean numerical simulation, including storm surge and coastal flood. Papers will be professionally peer reviewed and recommended for publication by the editorial board.

Prof. Dr. Zhaoli Wang
Prof. Dr. Binzhen Zhou
Prof. Dr. Guoru Huang
Prof. Dr. Chengguang Lai
Prof. Dr. Xiangju Cheng
Dr. Zhaoyang Zeng
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • hydrological process
  • water resources management
  • water ecology protection
  • water environment simulation
  • low-impact development and sponge city
  • urban and basin flood simulation and control
  • ocean numerical simulation, including storm surge and coastal flood
  • climate change and hydrology and water resources
  • climate change and water ecological environment
  • big data of water resources and artificial intelligence
  • digital twin watershed and smart water conservancy

Published Papers (3 papers)

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Research

30 pages, 4265 KiB  
Article
Utility of Open-Access Long-Term Precipitation Data Products for Correcting Climate Model Projection in South China
by Daling Cao, Xiaotian Jiang, Shu Liu, Fuxin Chai, Yesen Liu and Chengguang Lai
Water 2023, 15(16), 2906; https://doi.org/10.3390/w15162906 - 11 Aug 2023
Viewed by 953
Abstract
Insufficient precipitation observations hinder the bias-correction of Global Climate Model (GCM) precipitation outputs in ungauged and remote areas. As a result, the reliability of future precipitation and water resource projections is restricted for these areas. Open-access quantitative precipitation estimation (QPE) products offer a [...] Read more.
Insufficient precipitation observations hinder the bias-correction of Global Climate Model (GCM) precipitation outputs in ungauged and remote areas. As a result, the reliability of future precipitation and water resource projections is restricted for these areas. Open-access quantitative precipitation estimation (QPE) products offer a potential solution to this challenge. This study assesses the effectiveness of three widely used, long-term QPEs, including ERA5, PERSIANN-CDR, and CHIRPS, in bias-correcting precipitation outputs from the CMIP6 GCMs. The evaluation involves the reproduction of precipitation distribution, streamflow simulation utility based on a hydrological model, and the accuracy of extreme indices associated with rainstorm/flood/drought events. This study selects the Beijiang basin located in the subtropical monsoon area of South China as the case study area. The results demonstrate that bias-correction using QPEs improves the performance of GCM precipitation outputs in reproducing precipitation/streamflow distribution and extreme indices, with a few exceptions. PCDR generally exhibits the most effective bias-correction utility, consistently delivering reasonable performance across various cases, making it a suitable alternative to gauge data for bias-correction in ungauged areas. However, GCM outputs corrected by ERA5 tend to overestimate overall precipitation and streamflow (by up to about 25% to 30%), while the correction results of CHIRPS significantly overestimate certain extreme indices (by up to about 50% to 100%). Based on the revealed performance of QPEs in correcting GCM outputs, this study provides references for selecting QPEs in GCM-based water resource projections in remote and ungauged areas. Full article
(This article belongs to the Special Issue Water Science Research in South China University of Technology: Commemorating the University’s 70th Anniversary)
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12 pages, 951 KiB  
Article
Heavy Metals from NEFA Recycling as a Road Base Material: Release Dynamics and Impacts on a Shallow Aquifer
by Shu Li, Yuxin Zhao, Ya Xu, Rongbin Xu, Yuqiang Liu, Shuna Sun and Mengting Zhou
Water 2023, 15(10), 1885; https://doi.org/10.3390/w15101885 - 16 May 2023
Cited by 1 | Viewed by 1255
Abstract
The recycling of fly ash for structural fill uses, such as road base materials, is the most promising avenue to dissipate fly ash. Traditional risk assessment methods do not take into account the ultra-alkaline nature of new emerging fly ash (NEFA) and may [...] Read more.
The recycling of fly ash for structural fill uses, such as road base materials, is the most promising avenue to dissipate fly ash. Traditional risk assessment methods do not take into account the ultra-alkaline nature of new emerging fly ash (NEFA) and may underestimate the risk of long-term release of heavy metals and contamination of shallow diving when fly ash is utilized as a road base material. In this study, carbonation experiments are used to reveal the heavy metal release characteristics of NEFA under natural aging conditions and to assess the environmental risk and regional variability characteristics of pollutant release to shallow aquifers under the new fly ash road utilization scenario based on process modeling and Monte Carlo methods. The results showed that the heavy metal release concentrations in carbonized NEFA increased by a factor of 1.17–114.56 with natural aging. This would result in a dramatic increase in the shallow aquifer contamination risk when this material is used as a road base in typical areas. Exposure concentrations of four heavy metals, Ni, Cu, Zn, and As, increased by 1.27–113.89 times, and Cd concentrations increased from 0 mg/L to 0.055 mg/L. Ground infiltration differences due to regional differences in rainfall and other factors lead to differences in the shallow aquifer contamination risk in different areas. Heavy metal exposure concentrations can vary by up to 1.55 times. The results of the study confirm the significant long-term increase in heavy metal release and risk under NEFA resource utilization conditions and the shortcomings of traditional methods in characterizing their release and risk dynamics. In response, it is recommended that attention be paid to the long-term risk of NEFA resource utilization and that a methodological system for characterizing the heavy metal release potential and risk assessment of NEFA be developed. Full article
(This article belongs to the Special Issue Water Science Research in South China University of Technology: Commemorating the University’s 70th Anniversary)
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17 pages, 2675 KiB  
Article
Preliminary Study on the Inhibitory Effect and Mechanism of Eichhornia crassipes on Co-Cultured Raphidiopsis raciborskii
by Xiaowei Cheng, Weibin Pan, Yuanyuan Hu, Yulin Zou and Xiaojia Huang
Water 2023, 15(9), 1690; https://doi.org/10.3390/w15091690 - 26 Apr 2023
Viewed by 1059
Abstract
Raphidiopsis raciborskii, which harms water supply and ecological security, may expand its range with climate warming. To explore the ecological management method of R. raciborskii blooms, the co-culture system of Eichhornia crassipes and R. raciborskii was established to study the inhibitory effect [...] Read more.
Raphidiopsis raciborskii, which harms water supply and ecological security, may expand its range with climate warming. To explore the ecological management method of R. raciborskii blooms, the co-culture system of Eichhornia crassipes and R. raciborskii was established to study the inhibitory effect and inhibition mechanism of E. crassipes on R. raciborskii compared with the shaded culture of R. raciborskii alone. It was found that after co-cultured with E. crassipes (fresh weight, 5.10 ± 0.60 g·L−1) for seven days under initial high nutrient concentration, the algal cell density of co-culture groups with an initial cell density of 1.57 × 108 cells·L−1 and 1.57 × 109 cells·L−1 decreased by 63.19% and 14.87%, respectively. Meanwhile, the algal cell density in the co-culture group was significantly lower than that in the control group (p < 0.01). The algal cell density change showed that the growth of R. raciborskii was inhibited by co-cultured E. crassipes. In addition, E. crassipes could significantly reduce the nitrogen and phosphorus content in the water, but the growth state and photosynthesis of E. crassipes were not inhibited by R. raciborskii. These results suggested that E. crassipes has the potential to control R. raciborskii blooms. The study also found that when co-cultured, there was no significant difference in algal cell density between the groups supplemented with a certain amount of nutrients and the group without additional nutrients. Meanwhile, the inhibition rates of the co-culture groups were over 99% on day 4. These results showed that nutrient factors had no significant effect on the inhibitory effect of E. crassipes in the range of nutrients regulated by the experiment, and other factors played a leading role. In other words, under experimental conditions, nutrient competition was not the primary inhibitory mechanism of E. crassipes. This study also confirmed that E. crassipes had inhibitory allelopathy on R. raciborskii. The contribution and significance of allelopathy and other mechanisms could be studied in the future. Full article
(This article belongs to the Special Issue Water Science Research in South China University of Technology: Commemorating the University’s 70th Anniversary)
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