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Simulation of rice paddy systems in SWAT:A review of previous applications and proposed SWAT+rice paddy module

International Journal of Agricultural and Biological engineering 2022年第1期15卷 1-24页

作者： Philip W.Gassman Jaehak Jeong Julien Boulange Balaji Narasimhan Tasuku Kato Hiroaki Somura Hirozumi Watanabe Sadao Eguchi Yuanlai Cui Atsushi Sakaguchi Le Hoang Tu Rui Jiang Min-Kyeong Kim Jeffrey G.Arnold Wei Ouyang Center for Agricultural and Rural Development Iowa State UniversityAmesIowa 50011-1070USA Blackland Research&Extension Center Texas A&M AgriLifeTempleTexas 76502USA Department of International Environmental and Agricultural Sciences Tokyo University of Agriculture and TechnologyFuchuTokyo 183-8509Japan Department of Civil Engineering Indian Institute of Technology MadrasChennai 600036India Graduate School of Environmental and Life Science Faculty of EngineeringOkayama UniversityOkayama 700-8530Japan Institute for Agro-Environmental Sciences National Agriculture and Food Research OrganizationTsukuba 305-8604Japan State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan UniversityWuhan 430072China Department of Biological&Environmental Sciences Faculty of AgricultureYamaguchi UniversityYamaguchi 753-8515Japan Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China Ministry of AgricultureCollege of Natural Resources and EnvironmentNorthwest A&F UniversityYangling 712100ShaanxiChina Rural Development Administration Jeonju54875Republic of Korea Grassland Soil and Water Research Laboratory U.S.Department of Agriculture-Agricultural Research ServiceTempleTexas 76502USA School of Environment State Key Laboratory of Water Environment SimulationBeijing Normal UniversityBeijing 100875China

The Soil and water Assessment Tool(SWAT)is an ecohydrological watershed-scale model which was initially developed in the early 1990s to simulate the impacts of land use,management systems,and climate on hydrology and/or water *** adopted in the U.S.,the use of the model then spread to Europe and then later to Asia and other *** range of applications that SWAT has been applied to have also expanded dramatically,which influenced ongoing model development which has been virtually continuous over the past two decades.A key component of many SWAT applications in Asia is accounting for rice paddy production that is common in some subregions within the ***,most of these studies do not provide explicit details of how rice production was simulated in *** research has revealed that significant problems occur when trying to represent rice paddy systems in standard versions of SWAT,due to limitations in algorithms based on the runoff curve number approach or the pothole *** response,key modifications have been made to SWAT in recent studies that have resulted in more accurate representation of rice paddy *** developments point to the need for the incorporation of an enhanced rice paddy module within SWAT to better capture rice paddy hydrological and pollutant dynamics,which would support improved use of the model in Asia and other rice production *** related to simulating rice production in SWAT are discussed as follows:1)an overview of global rice production;2)history of SWAT development;3)typical approaches for simulating rice production;4)problems associated with the typical approaches;5)recent code modifications to address deficiencies in replicating rice paddy systems;6)recommendations for developing a standard rice paddy module for future SWAT codes.

关键词： SWAT rice paddies potholes hydrology pollutants modified SWAT models

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Bacterial Mobility and Motility in Porous Media Mimicked By Microspheres

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SSRN 2022年

作者： Shrestha, Diksha Ou, Jun Rogers, Ariel Jereb, Amani Wang, Yong Department of Physics Cell and Molecular Graduate Program Materials Science and Engineering Program University of Arkansas FayettevilleAR72701 United States Department of Environmental Resources Engineering Mechanical Engineering Program California State Polytechnic University Humboldt ArcataCA95521 United States

Bacterial motion in porous media are essential for their survival, proper functioning, and variousapplications. Here we investigated the motion of Escherichia coli bacteria in microsphere-mimicked porousmedia. We observed reduced bacterial velocity and enhanced directional changes of bacteria as the densityof microspheres increased, while such changes happened mostly around the microspheres and due to thecollisions with the microspheres. More importantly, we established and quantified the correlation betweenthe bacterial trapping in porous media and the geometric confinement imposed by the microspheres. In addition,numerical simulations showed that the active Brownian motion model in the presence of microspheresresulted in bacterial motion that are consistent with the experimental observations. Our study suggested thatit is important to distinguish the ability of bacteria to move easily – bacterial mobility – from the abilityof bacteria to move independently – bacteria motility. Our results showed that bacterial motility remainssimilar in porous media, but bacterial mobility was significantly affected by the pore-scale confinement. © 2022, The Authors. All rights reserved.

关键词： Microspheres

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A Study of the Measurement Conditions for Determining Liquid Entry Pressure Values for Hydrophobic Membranes

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SSRN 2023年

作者： Pyo, Minsu Kim, Dongyeon Kim, Hyungsoo Jeong, Sanghyun Lee, Eui-Jong Department of Environmental Engineering Daegu University 201 Daegudae-ro Jillyang Gyeongsan-si Gyeongbuk38453 Korea Republic of Graduate School of Water Resources Sungkyunkwan University 2066 Seobu-ro Jangan-gu Gyeonggi-do Suwon440746 Korea Republic of Department of Civil and Environmental Engineering Pusan National University Busan46241 Korea Republic of

Liquid entry pressure (LEP) is the threshold pressure required for water to penetrate a hydrophobic membrane, which is determined by incrementally increasing the pressure until water permeates the membrane. To this point, there has been limited research investigating the measurement conditions of LEP. Therefore, the current study aimed to examine whether LEP measurement conditions affect the determination of LEP values by utilizing three different types of membranes with varying pore sizes and materials. When measuring LEP using commercial membranes, a rapid increase in pressure leads to higher LEP values and increased deviation. Therefore, the present study recommends that the LEP measurement conditions of 0.1 bar pressure increments lasting for 5 min be used. While the LEP value is influenced by the maximum pore size and hydrophobicity of the membrane, it is important to acknowledge that the thickness of the membrane also contributes to the maintenance of resistance to water penetration under a specific pressure. © 2023, The Authors. All rights reserved.

关键词： Membranes

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2D numerical simulation of urban dam break and its effect to building using lax scheme with numerical filter 4

2D numerical simulation of urban dam break and its effect to...

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4th International Conference on Earthquake engineering and Disaster Mitigation, ICEEDM 2019

作者： Maitsa, Tias Ravena Indra Mardika, M Gilang Bagus Adityawan, Mohammad Harlan, Dhemi Kusumastuti, Dyah Adi Kuntoro, Arno Graduate School of Civil Engineering Faculty of Civil and Environmental Engineering Institut Teknologi Bandung Indonesia Water Resources Engineering and Management Faculty of Civil and Environmental Engineering Institut Teknologi Bandung Indonesia Water Resources Engineering Research Group Faculty of Civil and Environmental Engineering Institut Teknologi Bandung Indonesia Structural Engineering Research Group Faculty of Civil and Environmental Engineering Institut Teknologi Bandung Indonesia Center for Water Resources Development Institut Teknologi Bandung Indonesia

Dam-break is one of the disasters that can occurred due to earthquake. The earthquake vibration may damage the dam construction and therefore causing a dam-break flow. The flow can cause severe destruction to the downstream urban area. Dam-break modeling offers a way to analyze its effect of buildings. In this study, a 2D model for analyzing dam break flow is developed based on the Saint Venant equations and solved using Lax Scheme. The initial condition of the modelling is a rectangular channel with obstacles at both sides of the channel and two similar columns in the middle of the channel. These obstacles are considered as buildings in an urban area. Numerical filter is used to increase the stability of the simulation. The developed model is able to perform well in simulating a case of urban dam-break based on a previous experiment. In addition, the applied numerical filter is able to handle shock, therefore maintaining the stability of the model while reducing the simulation time without the needs to use a higher order numerical scheme. © 2020 The Authors, published by EDP Sciences.

关键词： Earthquakes

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Polyolefin-derived substrate-grown carbon nanotubes as binder-free electrode for hydrogen evolution in alkaline media

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Chemosphere 2024年 349卷 140769页

作者： Wu, XinYi Tu, Wei Han Veksha, Andrei Chen, Wenqian Lisak, Grzegorz Nanyang Environment & Water Research Institute Nanyang Technological University 1 Cleantech Loop Clean Tech One 637141 Singapore School of Civil and Environmental Engineering Nanyang Technological University 50 Nanyang Avenue 639798 Singapore Interdisciplinary Graduate Program Nanyang Technological University 1 Cleantech Loop Cleantech One Singapore 637141 Singapore

Switching from a linear mode of waste management to a circular loop by transforming plastic waste into carbon nanotubes (CNTs) is a promising approach to current plastic waste treatment. One of the many applications of CNTs is its use for electrocatalytic water splitting for hydrogen evolution. Existing methods of CNTs-based hydrogen evolution reaction (HER) electrode fabrication involve additives like polymeric binders and additional steps to improve CNT dispersion, which are detrimental to the CNT structure and properties. The in-situ fabrication approach can potentially be a one-pot solution to HER electrode synthesis. In this study, polyolefins pyrolysis gas and a Co:Ni:Mg catalyst were used to fabricate binder-free CNTs-based electrodes on different substrates for HER. The study assessed CNT quality on conductive carbon paper, semiconductive silicon, and dielectric glass substrates, evaluating their HER performance in 1 M KOH. A mixture of hollow-core, bamboo-like, and cup-stacked arrangement nanotubes were synthesized on the substrates, with CNTs on glass and carbon paper substrates possessing better graphitization than CNTs grown on silicon. This is in agreement with HER performance, whereby the as-prepared electrodes required overpotentials of 267 mV, 241 mV, and 216 mV for silicon, glass, and carbon paper, respectively, to achieve 10 mA/cm2. Despite being poorly conductive, the glass substrate electrode achieved a lower overpotential than the silicon electrode. Additionally, the as-prepared silicon electrode faced a delamination issue likely attributed to the lower surface energy of the silicon substrate surface, demonstrating the weaker adhesion between the CNTs and silicon surface. The proposed approach thus showed that the in-situ fabricated electrodes performed better than separately synthesized CNTs prepared into electrodes by 27.4% and 14.2% for carbon paper and glass substrates, respectively. The improved performance of the as-prepared, binder-free e

关键词： Carbon nanotubes

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A Mechanistic Study of Liquid Entry Pressure Estimation for Hydrophobic Membranes: Values and Operating Conditions

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SSRN 2023年

作者： Pyo, Minsu Kim, Dongyeon Kim, Hyungsoo Jeong, Sanghyun Lee, Euijong Department of Environmental Engineering Daegu University 201 Daegudae-ro Jillyang Gyeongbuk Gyeongsan-si38453 Korea Republic of Graduate School of Water Resources Sungkyunkwan University 2066 Seobu-ro Jangan-gu Gyeonggi-do Suwon440746 Korea Republic of Department of Civil and Environmental Engineering Pusan National University Busan46241 Korea Republic of

Liquid entry pressure (LEP) represents the threshold pressure needed for water to penetrate a hydrophobic membrane, which is determined by incrementally increasing the pressure and confirming the permeation of water. However, there has been limited investigation into the measurement conditions of LEP. This study aimed to examine the effect of LEP measurement conditions on the determination of LEP values, utilizing three different membrane types with varying pore sizes and materials. When measuring LEP using commercial membranes, a rapid increase in pressure leads to higher LEP values and increased deviation. Considering the impact of the pressure increase rate on the LEP value, the LEP measurement condition was set as a 0.1 bar pressure increment lasting for 5 min. In addition, while the LEP value is influenced by the maximum pore size and hydrophobicity of the membrane, it is important to acknowledge that the thickness of the membrane also contributes to the maintenance of resistance to water penetration under a specific pressure. © 2023, The Authors. All rights reserved.

关键词： Hydrophobicity

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Communicating Science Through Press Releases to News Media: The Case Study of What Is Controlling the Fabled water Clarity of Lake Tahoe

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Limnology and Oceanography Bulletin 2024年第2期33卷 73-76页

作者： Chandra, Sudeep Paerl, Hans W. Melack, John Lovejoy, Connie Priscu, John C. Bess, Zach Coil, John Goldman, Charles R. Brett, Michael T. Suenaga, Erin Nava, Veronica Global Water Center University of Nevada Reno NV United States Institute of Marine Sciences University of North Carolina at Chapel Hill Morehead City NC United States Bren School of Environmental Science and Management University of California Santa Barbara Santa Barbara CA United States Département de Biologie Québec Océan Université Laval Québec QC Canada Montana State University Bozeman MT United States Ecology Evolution and Conservation Biology Graduate Program University of Nevada Reno NV United States JC Oil Environmental Consulting Davis CA United States Tahoe Research Group University of California Davis Emeritus Davis CA United States Department of Civil and Environmental Engineering University of Washington Seattle WA United States Department of Earth and Environmental Sciences University of Milano-Bicocca MI Milano Italy

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How different spatial resolutions of digital models affects the geospatial distribution evaluation of the Index of Connectivity

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Journal of South American Earth Sciences 2025年 163卷

作者： Eberval Marchioro Geraldo André Rosseto Barreto Ialy Gomes Ferreira Adelsom Soares Filho Diogo Costa Buarque Department of Geography (DGEO) Graduate Program in Geography (PPGG) Federal University of Espírito Santo/Brazil (UFES) Coordinator of the Laboratory for Monitoring and Modeling Environmental Systems (Lamosa) Brazil Graduate Program in Management and Regulation of Water Resources (ProfÁgua/UFES) Brazil Graduate Program in Geography at UFES Brazil Graduate Program in Civil Engineering at UFV Brazil Department of Geography Graduate Program in Geography Federal University of Grande Dourados (UFGD) Brazil Department of Environmental Engineering Graduate Program in Environmental Engineering (PPGEA) Professional Master's in Water Resources Management and Regulation (ProfÁgua/UFES) Federal University of Espírito Santo/Brazil (UFES) Brazil

Digital Terrain Models (DTM) and Digital Elevation Models (DEM) are important for obtaining the Index of Connectivity, as they provide valuable information to assess the possibility of sediments reaching the riverbed in watershed basins. This is crucial for proactive management, as it allows the adoption of preventive and mitigating measures. Therefore, this study aims to analyze the effect of the spatial resolution of DEMs with resolutions of 5 m and 2 m, and between the DTM and DEM at 2 m, in determining the Index of Connectivity (IC). Additionally, it was investigated whether it is possible to use only one spatial resolution of digital models to assess the geospatial distribution of IC for all hydrogeomorphological landscapes of the Duas Bocas River watershed, located in the Metropolitan Region of Greater Vitória, in the state of Espírito Santo, Southeast Brazil. For this study, the Borselli Index of Connectivity model (et al., 2008) was used, originally developed for rural areas of Italy and widely applied in different regions worldwide. The data used, including Digital Elevation and Terrain Models and land use and cover information, were obtained from the Integrated Geospatial Base System of the State of Espírito Santo (Brazil), which is publicly *** results indicate that a better geospatial representation of IC occurs when changing the spatial resolution of DEMs from a 5 m pixel to a 2 m pixel and when using the 2 m DTM instead of the 2 m DEM. When analyzing the relationship between IC and the hydrogeomorphological landscapes in the basin, it was observed that, in the absence of models with an even finer pixel resolution, the 2 m DTM is the most suitable option, as it presented IC values consistent within and between landscapes in the Escalated Terraces of Southern Espírito Santo, Coastal Hills and Massifs, and Coastal Plateaus sectors. The exception was the fluvio-lagoon plain, which requires an even finer pixel resolution, necessitating further st

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Emerging contaminants:A One Health perspective

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The Innovation 2024年第4期5卷 140-170,139页

作者： Fang Wang Leilei Xiang Kelvin Sze-Yin Leung Martin Elsner Ying Zhang Yuming Guo Bo Pan Hongwen Sun Taicheng An Guangguo Ying Bryan WBrooks Deyi Hou Damian EHelbling Jianqiang Sun Hao Qiu Timothy MVogel Wei Zhang Yanzheng Gao Myrna JSimpson Yi Luo Scott XChang Guanyong Su Bryan MWong Tzung-May Fu Dong Zhu Karl JJobst Chengjun Ge Frederic Coulon Jean Damascene Harindintwali Xiankui Zeng Haijun Wang Yuhao Fu Zhong Wei Rainer Lohmann Changer Chen Yang Song Concepcion Sanchez-Cid Yu Wang Ali El-Naggar Yiming Yao Yanran Huang Japhet Cheuk-Fung Law Chenggang Gu Huizhong Shen Yanpeng Gao Chao Qin Hao Li Tong Zhang Natàlia Corcoll Min Liu Daniel SAlessi Hui Li Kristian KBrandt Yolanda Pico Cheng Gu Jianhua Guo Jianqiang Su Philippe Corvini Mao Ye Teresa Rocha-Santos Huan He Yi Yang Meiping Tong Weina Zhang Fidèle Suanon Ferdi Brahushi Zhenyu Wang Syed AHashsham Marko Virta Qingbin Yuan Gaofei Jiang Louis A.Tremblay Qingwei Bu Jichun Wu Willie Peijnenburg Edward Topp Xinde Cao Xin Jiang Minghui Zheng Taolin Zhang Yongming Luo Lizhong Zhu Xiangdong Li DamiàBarceló Jianmin Chen Baoshan Xing Wulf Amelung Zongwei Cai Ravi Naidu Qirong Shen Janusz Pawliszyn Yong-guan Zhu Andreas Schaeffer Matthias C.Rillig Fengchang Wu Gang Yu James M.Tiedje State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China Department of Chemistry Hong Kong Baptist UniversityHong KongChina HKBU Institute of Research and Continuing Education Shenzhen Virtual University ParkShenzhenChina Technical University of Munich TUM School of Natural SciencesInstitute of Hydrochemistry85748 GarchingGermany School of Resources&Environment Northeast Agricultural UniversityHarbin 150030China Climate Air Quality Research UnitSchool of Public Health and Preventive MedicineMonash UniversityMelbourneVICAustralia Faculty of Environmental Science&Engineering Kunming University of Science&TechnologyKunming 650500China Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Ministry of Education Key Laboratory of Environmental Theoretical Chemistry South China Normal UniversityGuangzhouGuangdong 510006China Department of Environmental Science Baylor UniversityWacoTXUSA Center for Reservoir and Aquatic Systems Research(CRASR) Baylor UniversityWacoTXUSA School of Environment Tsinghua UniversityBeijing 100084China School of Civil and Environmental Engineering Cornell UniversityIthacaNY 14853USA Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province Zhejiang University of TechnologyHangzhou 310014China School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Laboratoire d’Ecologie Microbienne Universite Claude Bernard Lyon 1UMR CNRS 5557UMR INRAE 1418VetAgro Sup69622 VilleurbanneFrance Department of Pla

environmental pollution is escalating due to rapid global development that often prioritizes human needs over planetary *** global efforts to mitigate legacy pollutants,the continuous introduction of new substances remains a major threat to both people and the *** response,global initiatives are focusing on risk assessment and regulation of emerging contaminants,as demonstrated by the ongoing efforts to establish the UN’s Intergovernmental Science-Policy Panel on Chemicals,Waste,and Pollution *** review identifies the sources and impacts of emerging contaminants on planetary health,emphasizing the importance of adopting a One Health *** for monitoring and addressing these pollutants are discussed,underscoring the need for robust and socially equitable environmental policies at both regional and international *** actions are needed to transition toward sustainable pollution management practices to safeguard our planet for future generations.

关键词： pollution planet contaminants

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Flood Forecasting and Warning System: A Survey of Models and Their Applications in West Africa

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American Journal of Climate Change 2023年第1期12卷 1-20页

作者： Mohamed Fofana Julien Adounkpe Sam-Quarco Dotse Hamadoun Bokar Andrew Manoba Limantol Jean Hounkpe Isaac Larbi Adama Toure Graduate Research Program on Climate Change and Water Resources West African Science Service Center on Climate Change and Adapted Land Use (WASCAL) Department of Applied Hydrology University of Abomey-Calavi Cotonou Abomey-Calavi Benin National Water Institute University of Abomey Calavi Abomey Calavi Atlantic Benin School of Sustainable Development University of Environmental and Sustainable Development Somanya Ghana National Engineer School ENI-ABT Bamako Mali

Flood events occurrences and frequencies in the world are of immense worry for the stability of the economy and life safety. Africa continent is the third continent the most negatively affected by the flood events after Asia and Europe. Eastern Africa is the most hit in Africa. However, Africa continent is at the early stage in term of flood forecasting models development and implementation. Very few hydrological models for flood forecasting are available and implemented in Africa for the flood mitigation. And for the majority of the cases, they need to be improved because of the time evolution. Flash flood in Bamako (Mali) has been putting both human life and the economy in jeopardy. Studying this phenomenon, as to propose applicable solutions for its alleviation in Bamako is a great concern. Therefore, it is of upmost importance to know the existing scientific works related to this situation in Mali and elsewhere. The main aim was to point out the various solutions implemented by various local and international institutions, in order to fight against the flood events. Two types of methods are used for the flood events adaptation: the structural and non-structural methods. The structural methods are essentially based on the implementation of the structures like the dams, dykes, levees, etc. The problem of these methods is that they may reduce the volume of water that will inundate the area but are not efficient for the prediction of the coming floods and cannot alert the population with any lead time in advance. The non-structural methods are the one allowing to perform the prediction with acceptable lead time. They used the hydrological rainfall-runoff models and are the widely methods used for the flood adaptation. This review is more accentuated on the various types non-structural methods and their application in African countries in general and West African countries in particular with their strengths and weaknesses. Hydrologiska Byråns Vattenbalansavdelning (H

关键词： Flood Forecasting Hydrological Models Climate Change West

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