Article
Green & Sustainable Science & Technology
Jiqiang Xie, Jinjun You, Zhenzhen Ma, Xiaoya Deng, Pengfei Lin, Juanjuan Gao, Jiri Jaromir Klemes
Summary: Water scarcity evaluation is crucial for the sustainable development of water resources. This study incorporates reservoir regulation functions into the evaluation model and finds that reservoirs have a significant influence on water scarcity evaluation. Considering the role of reservoirs in the evaluation can reduce the estimated water scarcity and provide a more accurate description of water scarcity in both temporal and spatial dimensions.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Multidisciplinary Sciences
Jamison M. Gove, Gareth J. Williams, Joey Lecky, Eric Brown, Eric Conklin, Chelsie Counsell, Gerald Davis, Mary K. Donovan, Kim Falinski, Lindsey Kramer, Kelly Kozar, Ning Li, Jeffrey A. Maynard, Amanda McCutcheon, Sheila A. McKenna, Brian J. Neilson, Aryan Safaie, Christopher Teague, Robert Whittier, Gregory P. Asner
Summary: This study demonstrates that reducing local human impacts can enhance the resilience and recovery of coral reefs to bleaching events. Integrated land-sea management can effectively protect coastal marine ecosystems and provide the best opportunity for coral reefs to persist in a changing climate.
Article
Multidisciplinary Sciences
Marta Zaniolo, Matteo Giuliani, Scott Sinclair, Paolo Burlando, Andrea Castelletti
Summary: The timing and operations of dam filling can lead to conflicts associated with the dam's lifetime, which can be mitigated by adaptive solutions responding to hydroclimatic fluctuations. Study findings from the Gibe III dam filling show the benefits of adaptive strategies in achieving hydropower production while minimizing negative impacts on downstream users.
NATURE COMMUNICATIONS
(2021)
Article
Green & Sustainable Science & Technology
Dan Dai, Angelos Alamanos, Wenqian Cai, Qingqing Sun, Liangsuo Ren
Summary: Northwest China is facing significant challenges in terms of water quantity and quality due to rapid socio-economic development, and there is a lack of understanding about the long-term status of its water resources. This study provides a comprehensive assessment of water resources in Northwest China, with a focus on water use intensity, water scarcity, and water quality. The findings highlight the unsustainable water use and inequalities in water scarcity among provinces, as well as the efforts made by the government to preserve water resources. Although significant improvements have been achieved in wastewater treatment and river water quality, water shortages remain a persistent issue that needs to be addressed for sustainable development.
Article
Environmental Sciences
John F. Knowles, Nels R. Bjarke, Andrew M. Badger, Max Berkelhammer, Joel A. Biederman, Peter D. Blanken, Mario Bretfeld, Sean P. Burns, Brent E. Ewers, John M. Frank, Jeffrey A. Hicke, Leanne Lestak, Ben Livneh, David E. Reed, Russell L. Scott, Noah P. Molotch
Summary: Insect outbreaks have significant impacts on forest structure and function globally, but their effects on evapotranspiration (ET) and its components are not well understood. In this study, we used remote sensing, eddy covariance, and hydrological modelling to investigate the effects of bark beetle outbreak on ET and its partitioning in the Southern Rocky Mountain Ecoregion (SRME), USA. Our results showed that 85% of the forest area was affected by beetles, leading to a significant decrease in annual water year ET.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Computer Science, Interdisciplinary Applications
C. Dionisio Perez-Blanco, Hector Gonzalez-Lopez, Arthur Hrast-Essenfelder
Summary: This study couples a microeconomic model with a hydrologic model to investigate the impact of human-modified water cycle. The model suggests that strengthening agricultural water allocation constraints can mitigate the environmental impacts of drought with an incremental effect on Gross Value Added and employment.
ENVIRONMENTAL MODELLING & SOFTWARE
(2021)
Article
Environmental Sciences
Leandro Avila, Reinaldo Silveira, Andre Campos, Nathalli Rogiski, Jose Goncalves, Arlan Scortegagna, Camila Freita, Cassia Aver, Fernando Fan
Summary: Hydrological modeling is a valuable tool for water resources management, allowing for the representation of hydrological processes and prediction of streamflow. This study evaluates the performance of five hydrological models in representing streamflow in the Tocantins river basin in Brazil, finding that one model outperforms the others. Additionally, the limitations of lumped models for large river basins are discussed.
Article
Environmental Sciences
Mingyue Li, Dong Liang, Jun Xia, Jinxi Song, Dandong Cheng, Jintao Wu, Yelin Cao, Haotian Sun, Qi Li
Summary: The water conservation function of the Danjiang River Basin tends to decrease under the comprehensive influence of various factors. The study identified Shangnan County, the southern part of Danfeng County and the northern part of Shanyang County as important water conservation areas, which should be regarded as key and priority protection areas in the regional water resource and ecological protection.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Marx Vinicius Maciel da Silva, Cleiton da Silva Silveira, Jose Micael Ferreira da Costa, Eduardo Savio Passos Rodrigues Martins, Francisco das Chagas Vasconcelos Junior
Summary: The study analyzed the future challenges facing hydropower generation in the Sao Francisco River Basin, finding potential issues such as reduced water availability, increased consumptive demands, particularly for irrigation, and decreased power generation.
Article
Geosciences, Multidisciplinary
Madeleine Pascolini-Campbell, Joshua B. Fisher, John T. Reager
Summary: Accurate measurement of evapotranspiration (ET) over large scales using remote sensing is crucial for effective water resource management, but challenging in complex agricultural landscapes. This study highlights the importance of irrigation in ET estimation and demonstrates the synergistic benefits of combining GRACE-FO and ECOSTRESS for improving remote sensing of agricultural water use.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
Evelyn Lukat, Claudia Pahl-Wostl, Andrea Lenschow
Summary: This article discusses the challenges of implementing Integrated Water Resources Management (IWRM) in countries of the Global South and the importance of considering institutional interplay in policy transfer. Through a case study in the uMngeni river basin in South Africa, it is found that a higher level of similarity between formal and informal institutions leads to more frequent implementation of formal provisions. Therefore, understanding the setting of informal institutions before policy reforms is essential for a realistic assessment of results.
ENVIRONMENTAL SCIENCE & POLICY
(2022)
Article
Environmental Sciences
Peter Debaere, Tianshu Li
Summary: The study finds that the water market reforms in the Murray-Darling Basin in Australia have led to changes in water allocation, particularly during drought periods. Technological improvements have helped increase water productivity, and there has been a shift in activity between agriculture and manufacturing sectors.
ENVIRONMENTAL RESEARCH LETTERS
(2022)
Article
Environmental Sciences
Guanle Xiong, Jingqiao Mao, Haibin Cai, Hongqing Zhang
Summary: Dam construction has negative impacts on the transport process of water constituents, resulting in various water quality issues in reservoir areas and hindering the sustainable development of hydropower. Conventional reservoir operation optimizations face challenges in mathematizing multiple water quality objectives and solving high-dimensional computational problems. This study proposes a comprehensive methodology that incorporates the concept of transport timescales into optimal reservoir operation, providing a heuristic tool for comprehensive water quality management in reservoirs.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Environmental Sciences
Jun Wang, Guoxiong Mei, Ankit Garg, Deqiang Chen, Ning Liu
Summary: Rainwater retention and water content in green roofs are influenced by structural configurations and climatic factors. A conceptual model for simulating water flow in green roofs with water storage layers was proposed and validated. The results showed that the model can accurately capture the dynamic variations in rainwater retention and water content. High evapotranspiration plants and increased water storage layer depth improve the rainwater retention capacity of green roofs.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Multidisciplinary Sciences
Zhijie Li, Hui Zhao, Jinning Liu, Jingqi Zhang, Zhiguo Shao
Summary: With the impacts of global climate change and rapid urbanization, urban flood and drought disasters are occurring frequently, posing serious challenges to urban water supply systems. This paper proposes a method to assess the resilience of urban water supply systems and applies it to evaluate and analyze the water supply system in Qingdao. The results provide decision support for planning and building resilience in urban water systems.
SCIENTIFIC REPORTS
(2022)
Article
Mathematics, Applied
Zong-Bing Yu, Chenghao Zhu, Jian-Shi Zhao, Li Zou
Summary: This work investigates the integrable general three-component nonlinear Schrodinger equation, and formulates a 4 x 4 matrix spectral problem and a Riemann-Hilbert problem to obtain the multi-soliton solutions for this equation.
APPLIED MATHEMATICS LETTERS
(2022)
Article
Engineering, Civil
Jinyu Gao, Andrea Castelletti, Paolo Burlado, Hao Wang, Jianshi Zhao
Summary: Water resources management in the Lancang-Mekong River Basin faces challenges due to geopolitical factors, hydropower dam expansion, and increasing demands for energy, food, and riverine ecosystem preservation. This paper proposes the concept of soft cooperation through data sharing to enhance the adaptive and reliable operation of the water system. The study shows that conflicts mainly exist between sectors rather than among countries, and sharing water storage data significantly improves hydropower production.
JOURNAL OF HYDROLOGY
(2022)
Article
Engineering, Civil
Jiabiao Wang, Jianshi Zhao, Tongtiegang Zhao, Hao Wang
Summary: This paper presents a method to partition the uncertainty sources of flood routing, showing that each source has unique effects on flood routing and the contribution ratios vary significantly with time and space.
JOURNAL OF HYDROLOGY
(2022)
Article
Engineering, Civil
Weize Wang, Peng Hu, Zefan Yang, Jianhua Wang, Jianshi Zhao, Qinghui Zeng, Huan Liu, Qin Yang
Summary: In this study, a hydrodynamic model and neural network models were used to simulate and verify the dynamics of the normalized difference vegetation index (NDVI) in the Zhalong Wetland. The effects of different ecological water supplementation scenarios on the NDVI variation were evaluated. The results show that ecological water supplementation has a positive influence on the NDVI, but large errors occur in regions with small lakes and the lower reach of the largest subarea is less affected. Water supplementation in April and September is recommended.
JOURNAL OF HYDROLOGY
(2022)
Article
Agronomy
Wenjing Yang, Yong Zhao, Huade Guan, Yingfu Tang, Mingming Yang, Qingming Wang, Jianshi Zhao
Summary: In this study, a combined model based on the optimality principle was used to estimate monthly evapotranspiration (E) values and its components in China from 1982 to 2018. The modeling results showed that the average annual E in China was 397.90 mm yr(-1), with major contributions from transpiration (Ec), soil evaporation (Es), and canopy interception evaporation (Ei). Precipitation, air temperature, and net radiation were identified as the primary drivers of E trends in different regions of China. The findings emphasize the importance of considering the divergent driving patterns of water, energy, and vegetation for water resource planning and management.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Biodiversity Conservation
Fan Yi, Qi Lu, Yonghua Li, Zhongjing Wang, Bin Yao, Qiankun Yang, Jing Wang
Summary: Based on the vegetation dynamics of natural oasis, this study constructed a natural oasis ecological vulnerability assessment model (NOEV) to effectively assess the ecological vulnerability of natural oasis. The main factors affecting vegetation dynamics were human activities, with a contribution rate of 42.08%. Economic and environmental policies implemented by the government after the 21st century promoted the recovery of vegetation. The NOEV model helps to formulate direct and effective policy recommendations for ecological protection and restoration work.
ECOLOGICAL INDICATORS
(2023)
Article
Environmental Sciences
Hang Zheng, Yueyi Liu, Wenhua Wan, Jianshi Zhao, Guanti Xie
Summary: Deep learning methods are increasingly used in water quality prediction due to their ability to map nonlinear relationships quickly. However, the lack of physical explanation limits their practicality. In this study, an interpretable deep learning framework was established to predict water quality variations. The model achieved satisfactory prediction performance, with coefficients of determination above 0.80 for COD, TP, and TN. The SHapley Additive exPlanations method was effective in interpreting the results and identifying important variables affecting water quality variations.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Civil
Yueyi Liu, Hang Zheng, Wenhua Wan, Jianshi Zhao
Summary: In order to reduce the energy consumption of the Eastern route of China's South-to-North Water Transfer Project, an optimized operational model was established to schedule the water-pumping process along the transfer route. The results show that the proposed operational rules can effectively reduce the water pumping and energy consumption of the project. Additionally, raising the water levels of southern lakes at the beginning of the year can further reduce the subsequent water pumping from the Yangtze River and the relative energy use of the project. Key areas for energy-saving along the eastern route were identified, providing new insights into the water-energy nexus behaviors of long-distance water transfer projects.
JOURNAL OF HYDROLOGY
(2023)
Article
Engineering, Civil
Junyu Wei, Xiangyu Luo, Haocheng Huang, Weihong Liao, Xiaohui Lei, Jianshi Zhao, Hao Wang
Summary: An ensemble-based simulation and data assimilation model is constructed to quantify and curb uncertainties in flood modeling, using Monte Carlo sampling and particle filter assimilation. Heterogeneous computing technologies based on CUDA and a distributed storage multi-GPU system are used for high-resolution real-time ensemble simulation. The results indicate that the particle filter method effectively constrains simulation uncertainty and provides confidence intervals of key hydrological elements.
JOURNAL OF HYDROLOGY
(2023)
Article
Environmental Sciences
Yingfu Tang, Zhongjing Wang, Teng Zhang
Summary: Soil salinization globally deteriorates soil fertility. Evaluating the salinization scale is crucial for sustainable agriculture and land rehabilitation. In this study, a support vector regression spatial (SVR-S) model was proposed to predict soil salinity in the irrigation area of the Shule River Basin in northwestern China using spatial dependence information. The SVR-S model outperformed the SVR-O and GWR, with a correlation coefficient (R) of 0.87 and a root mean square error (RMSE) of 1.83%. Topographic indices integrating spatial information contributed significantly to salinity estimation in the study area. This study offers a new approach for accurate soil salinity mapping using spatial information.
LAND DEGRADATION & DEVELOPMENT
(2023)
Article
Computer Science, Interdisciplinary Applications
Holger R. Maier, Feifei Zheng, Hoshin Gupta, Junyi Chen, Juliane Mai, Dragan Savic, Ralf Loritz, Wenyan Wu, Danlu Guo, Andrew Bennett, Anthony Jakeman, Saman Razavi, Jianshi Zhao
Summary: Models are crucial in advancing our understanding of Earth's physical nature and environmental systems, but their accuracy and reliability depend heavily on data, which are often partitioned without justification. This study highlights the significance of meticulously considering data partitioning in the model development and evaluation process, and its impact on model generalization. Flaws in existing data-splitting approaches are identified, and a forward-looking strategy is proposed to address this issue, leading to improved model generalization capabilities.
ENVIRONMENTAL MODELLING & SOFTWARE
(2023)
Article
Engineering, Civil
Weisa Meng, Wenhua Wan, Zhongjing Wang, Jianshi Zhao
Summary: This paper presents an analytical basis for determining the forecast horizon (FH) in real-time reservoir operation. It incorporates both physical and economic determinants and derives criteria for FH determination. The effects of discount rate, inflow forecast variance, and reservoir storage capacity on FH are analyzed theoretically and numerically.
JOURNAL OF WATER RESOURCES PLANNING AND MANAGEMENT
(2023)
Article
Engineering, Civil
Chee Hui Lai, Jianshi Zhao
Summary: In this paper, the authors analyze the water resource management institution of Australia's Murray-Darling Basin using institutional grammar and the institutional analysis and development framework's rule typology. The study finds that the basin's institutional structure emphasizes choice and information rules, with aggregation rules present in every context. However, the composition of rules differs across contexts, indicating a variation in institutional focus. The analysis of choice and aggregation rules also reveals the roles and interdependencies of basin actors. The findings contribute to a comprehensive understanding of interstate water institutions and aid in the development of systematic water institution analysis tools.
JOURNAL OF WATER RESOURCES PLANNING AND MANAGEMENT
(2023)
Article
Environmental Sciences
Wenhua Wan, Yueyi Liu, Hang Zheng, Jianshi Zhao, Fei Zhao, Yajing Lu
Summary: China's South-to-North Water Division Project has caused changes in the hydrological conditions and water storage of the Miyun Reservoir, affecting flood control in the Chaobai River Basin. This study developed a dual-objective five-reservoir operation model considering flood risks downstream and in the Miyun Reservoir area. An optimized set of operating rules was obtained using a parameterization-simulation-optimization approach, ensuring safe operation during expected floods. Compared to the current schemes, the optimized rules resulted in reduced losses and improved water transfer efficiency.
Article
Water Resources
Yingjian Cao, Junyu Wei, Jianshi Zhao
Summary: This research focuses on the mechanisms and predictions of extreme wet events in mainland China. The drivers of extreme wet events are identified as the Atlantic Multidecadal Oscillation, Northern Hemisphere Average Temperature, and Pacific Decadal Oscillation. Increasing trends of extreme wet events are found in the Northeast, North China, Southeast China, and Western Northwest China regions, while the Eastern Northwest China region shows a decreasing trend.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2023)
