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SPATIOTEMPORAL VARIATION OF WATER QUALITY AND ALGAL BIOMASS IN ERHAI LAKE AND ITS ENVIRONMENTAL MANAGEMENT

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 4,   Pages 566-578 doi: 10.15302/J-FASE-2023520

Abstract:

Elucidating the spatiotemporal pattern of water quality and algal biomass is crucial for accuratelyThis study analyzed the spatiotemporal variability of water quality and algal biomass in Erhai Lake from1994 to 2021 using water quality index (WQI), Mann-Kendall test and Sen’s slope combined methodsThe potential causes of water quality deterioration and algal biomass dynamics were also elucidated.The changes in water quality and algal biomass were primarily affected by total nitrogen, total phosphorus

Keywords： Erhai Lake     control measures     water environment     water quality index (WQI)    

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Assessment of temporal and spatial variations in water quality using multivariate statistical methods

Xue LI,Pengjing LI,Dong WANG,Yuqiu WANG

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 6,   Pages 895-904 doi: 10.1007/s11783-014-0736-z

Abstract: This study evaluated the temporal and spatial variations of water quality data sets for the Xin'anjiangThe water samples, measured by ten parameters, were collected every month for three years (2008–2010)electricity conductivity, total nitrogen, chemical oxygen demand and total phosphorus) for spatial variationThe non–parametric correlation coefficient (Spearman R) explained the relationship between the waterquality parameters and the basin characteristics, and the GIS made the results visual and direct.

Keywords： Xin'anjiang River     multivariable statistical analysis     temporal variation     spatial variation     water quality    

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Improvement of the Yangtze River’s Water Quality with Substantial Implementation of Wastewater Services Article

Weixiao Qi, Xu Wang, Jin Kang, Yaohui Bai, Rui Bian, Hongtao Xue, Li Chen, Aomei Guan, Yi-Rong Pan, Huijuan Liu, Jiuhui Qu

Engineering 2023, Volume 21, Issue 2,   Pages 135-142 doi: 10.1016/j.eng.2022.03.014

Abstract: These analyses trace and capture the key drivers affecting the restoration of water quality and determine

Keywords： Yangtze River Basin     Wastewater services infrastructure     Water quality variation trajectory     Key affecting    

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Spatiotemporal variation in water footprint of grain production in China

Pute WU,Yubao WANG,Xining ZHAO,Shikun SUN,Jiming JIN

Frontiers of Agricultural Science and Engineering 2015, Volume 2, Issue 2,   Pages 186-193 doi: 10.15302/J-FASE-2015060

Abstract: Water shortage has become a significant constraint to grain production in China.A more holistic approach is needed to understand the links between grain production and water consumptionWater footprint provides a framework to assess water utilization in agriculture production.This paper analyzes the spatiotemporal variation in water footprint of grain production (WFGP) in ChinaThe results show that, jointly motivated by the improvement of agricultural production and water use

Keywords： water footprint     grain production     grain secu- rity     water scarcity     water-saving    

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CHARACTERISTICS OF SOIL QUALITY ATTRIBUTES UNDER DIFFERENT AGROECOSYSTEMS AND ITS IMPLICATIONS FOR AGRICULTURE

Frontiers of Agricultural Science and Engineering doi: 10.15302/J-FASE-2023502

Abstract:

● Soil properties varied within coefficients of variation ranging from

Keywords： agroecosystem     Choke Mountain watershed     coefficients of variation     Ethiopia     soil quality indicator    

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A review of hydrological/water-quality models

Liangliang GAO,Daoliang LI

Frontiers of Agricultural Science and Engineering 2014, Volume 1, Issue 4,   Pages 267-276 doi: 10.15302/J-FASE-2014041

Abstract: Water quality models are important in predicting the changes in surface water quality for environmentalA range of water quality models are wildly used, but every model has its advantages and limitations forThe aim of this review is to provide a guide to researcher for selecting a suitable water quality modelEight well known water quality models were selected for this review: SWAT, WASP, QUALs, MIKE 11, HSPF

Keywords： water quality models     applications     future trends    

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Modeling effects of a tidal barrage on water quality indicator distribution in the Severn Estuary

Guanghai GAO, Roger A. FALCONER, Binliang LIN

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 2,   Pages 211-218 doi: 10.1007/s11783-012-0464-1

Abstract: In this study, emphasis has focused on assessing the potential hydro-environmental impacts of a barrage across the Severn Estuary, with a numerical model being developed and applied to the estuary to assess the impacts of proposed Severn Barrage on the hydrodynamic, sediment transport and faecal indicator organism distribution within the estuary. The results show that the Severn Barrage has the potential to reduce the tidal currents in a highly dynamic estuary. This leads to the reduction of suspended sediment concentrations, which in turn affects the bacterial transport processes which is highly related to the sediment transport processes.

Keywords： water quality indicator     Severn Estuary     numerical model     tidal energy    

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Relationships of nitrous oxide fluxes with water quality parameters in free water surface constructed

Juan WU, Jian ZHANG, Wenlin JIA, Huijun XIE, Bo ZHANG

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 2,   Pages 241-247 doi: 10.1007/s11783-009-0023-6

Abstract: concentration in the influent on nitrous oxide (N O) emissions, together with the relationships between N O and waterquality parameters in free water surface constructed wetlands, were investigated with laboratory-scaleThe relationships between N O and the chemical and physical water quality variables were studied by usingThe multiple linear regression model against principal components indicated that different water parameters

Keywords： free water surface constructed wetland     nitrous oxide emission     water quality parameter     principal component    

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Human health ambient water quality criteria for 13 heavy metals and health risk assessment in Taihu Lake

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 4, doi: 10.1007/s11783-021-1475-6

Abstract:

• The concentrations of 13 heavy metals in Taihu Lake were analyzed.

Keywords： Heavy metals     Human health ambient water quality criteria     Taihu Lake     Health risk assessment     Contribution    

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Effects of water quality on the coagulation performances of humic acids irradiated with UV light

Wendong WANG,Qinghai FAN,Zixia QIAO,Qin YANG,Yabo WANG,Xiaochang WANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 1,   Pages 147-154 doi: 10.1007/s11783-014-0749-7

Abstract: The presence of humic acid in drinking water treatment has received significant attention in recent yearsIn this paper, the effects of water quality including pH, turbidity, alkalinity, and hardness on thehumic acid in coagulation under both neutral and basic conditions, and the variations of the selected waterquality parameters had little adverse effect on the function of UV light.

Keywords： coagulation     drinking water     humic acid     UV light radiation     water quality    

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A novel hybrid model for water quality prediction based on VMD and IGOA optimized for LSTM

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 7, doi: 10.1007/s11783-023-1688-y

Abstract:

● A novel VMD-IGOA-LSTM model has proposed for the prediction of waterquality.

Keywords： Water quality prediction     Grasshopper optimization algorithm     Variational mode decomposition     Long short-term    

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Temporal dimension and water quality control in an emission trading scheme based on water environmental

Zhaoxing HAN, Zhenyao SHEN, Yongwei GONG, Qian HONG

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 1,   Pages 119-129 doi: 10.1007/s11783-011-0272-z

Abstract: Water environmental functional zone (WEFZ) is used to determine the water quality standard and identifyA water quality-control scheme was suggested based on the water quality requirement in the water functionalzone, in which the water quality at the downstream boundary of the zone was required to meet the waterTwo methods of calculating water quality control are addressed for point-source pollution and non-point-sourceThe calculated temporal dimension and water quality control were located in Dongxi River of the Daning

Keywords： emission trading     water functional zone     water quality control    

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Genetic variation of carotenoids in Chinese bread wheat cultivars and the effect of the 1BL.1RS translocation

Wenshuang LI,Shengnan ZHAI,Hui JIN,Weie WEN,Jindong LIU,Xianchun XIA,Zhonghu HE

Frontiers of Agricultural Science and Engineering 2016, Volume 3, Issue 2,   Pages 124-130 doi: 10.15302/J-FASE-2016094

Abstract: Genotype contributed to the majority of variation in carotenoid components.

Keywords： Triticum aestivum     carotenoids     nutritional quality     UPLC    

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Toxicity-oriented water quality engineering

Shengkun Dong, Chenyue Yin, Xiaohong Chen

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 5, doi: 10.1007/s11783-020-1259-4

Abstract: • Toxicity-oriented water quality monitoring was proposed. • Toxicity-oriented water quality engineeringThe fundamental goal of water quality engineering is to ensure water safety to humans and the environmentTraditional water quality engineering consists of monitoring, evaluation, and control of key water qualitySpecifically, complementary to traditional water quality parameters, we evaluated the water toxicitytoxicity-oriented water quality control designs.

Keywords： Water     Wastewater     Mixture     Toxicity     Monitor     Control    

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Spatio-temporal variations of water quality in Yuqiao Reservoir Basin, North China

Yuan XU,Ruqin XIE,Yuqiu WANG,Jian SHA

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 4,   Pages 649-664 doi: 10.1007/s11783-014-0702-9

Abstract: In this paper, we considered data for 14 water quality parameters collected during 1990–2004 at 7 waterquality monitoring sites.The results of fuzzy comprehensive assessment revealed that water quality in Yuqiao Reservoir Basin showedThe major water quality belonged to Class III and IV.Factor analysis identified four latent pollution sources for water quality variations: nutrient pollution

Keywords： Fuzzy comprehensive assessment     multivariate statistical analysis     water quality    

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Title Author Date Type Operation

SPATIOTEMPORAL VARIATION OF WATER QUALITY AND ALGAL BIOMASS IN ERHAI LAKE AND ITS ENVIRONMENTAL MANAGEMENT

Journal Article

Assessment of temporal and spatial variations in water quality using multivariate statistical methods

Xue LI,Pengjing LI,Dong WANG,Yuqiu WANG

Journal Article

Improvement of the Yangtze River’s Water Quality with Substantial Implementation of Wastewater Services

Weixiao Qi, Xu Wang, Jin Kang, Yaohui Bai, Rui Bian, Hongtao Xue, Li Chen, Aomei Guan, Yi-Rong Pan, Huijuan Liu, Jiuhui Qu

Journal Article

Spatiotemporal variation in water footprint of grain production in China

Pute WU,Yubao WANG,Xining ZHAO,Shikun SUN,Jiming JIN

Journal Article

CHARACTERISTICS OF SOIL QUALITY ATTRIBUTES UNDER DIFFERENT AGROECOSYSTEMS AND ITS IMPLICATIONS FOR AGRICULTURE

Journal Article

A review of hydrological/water-quality models

Liangliang GAO,Daoliang LI

Journal Article

Modeling effects of a tidal barrage on water quality indicator distribution in the Severn Estuary

Guanghai GAO, Roger A. FALCONER, Binliang LIN

Journal Article

Relationships of nitrous oxide fluxes with water quality parameters in free water surface constructed

Juan WU, Jian ZHANG, Wenlin JIA, Huijun XIE, Bo ZHANG

Journal Article

Human health ambient water quality criteria for 13 heavy metals and health risk assessment in Taihu Lake

Journal Article

Effects of water quality on the coagulation performances of humic acids irradiated with UV light

Wendong WANG,Qinghai FAN,Zixia QIAO,Qin YANG,Yabo WANG,Xiaochang WANG

Journal Article

A novel hybrid model for water quality prediction based on VMD and IGOA optimized for LSTM

Journal Article

Temporal dimension and water quality control in an emission trading scheme based on water environmental

Zhaoxing HAN, Zhenyao SHEN, Yongwei GONG, Qian HONG

Journal Article

Genetic variation of carotenoids in Chinese bread wheat cultivars and the effect of the 1BL.1RS translocation

Wenshuang LI,Shengnan ZHAI,Hui JIN,Weie WEN,Jindong LIU,Xianchun XIA,Zhonghu HE

Journal Article

Toxicity-oriented water quality engineering

Shengkun Dong, Chenyue Yin, Xiaohong Chen

Journal Article

Spatio-temporal variations of water quality in Yuqiao Reservoir Basin, North China

Yuan XU,Ruqin XIE,Yuqiu WANG,Jian SHA

Journal Article