scholarly journals Velikiy Novgorod Water Bodies’ Current Condition

2013 ◽  
pp. 32-45
Author(s):  
Keyword(s):  
Water Pollution ◽  
Surface Waters ◽  
Spatial Differentiation ◽  
Water Bodies ◽  
Pollution Level ◽  
Urban Water ◽  
General Status ◽  
Functional Zones ◽  
Contamination Levels ◽  
First Time

Hydro/chemical explorations on the assessment of water pollution have been conducted on the Velikiy Novgorod water bodies (the Volkhov River with its tributaries, the Veryazha River, and the urban water bodies). Surface waters contamination levels have been determined, for the first time the map of spatial differentiation of the Velikiy Novgorod water bodies’ pollution has been made, and the general status of the urban water bodies has been assessed. The link between territorial differences in the water bodies’ pollution level and the city’s functional zones distribution has been highlighted.

scholarly journals The Natural Waters’ Quality Assessment at the Yamalo-Nenetsk Autonomous District Scientific Grounds (Pyrovskiy, Tazovskiy, Shuryshkarskiy, Polyarno-Uralskiy)

2019 ◽  
Author(s):  
Keyword(s):  
Water Pollution ◽  
Surface Water ◽  
Surface Waters ◽  
Pollution Index ◽  
Water Bodies ◽  
Water Pollution Index ◽  
Polar Urals ◽  
Autonomous District ◽  
Surface Water Samples ◽  
The Polar Urals

Surface water bodies are most vulnerable to chemical pollution. Objective: to study the hydro/chemical indicators of the state of surface waters of the Yamalo-Nenetsk Autonomous District and to assess their quality. In 2018, original studies of water bodies located in scientific testing grounds of the Yamalo-Nenetsk Autonomous District were conducted. The reservoirs are located in the zone of the northern and middle taiga, southern tundra and forest-tundra, on the eastern slope of the Polar Urals. Sampling was carried out according to generally accepted methods. In the surface water samples, the main hydro/ chemical parameters were determined. For an integrated assessment of water quality, the water pollution index (WPI) was used. The surface waters of the examined water bodies belong to low mineralized waters with low concentrations of basic anions and cations. All studied waters in terms of BOD5are classified as dirty and very dirty waters. In the surface water samples of the Polar Urals, high concentrations of benz [a] pyrene were detected. The waters of the Tazovsky landfill belong to moderately polluted waters, the waters of the Purriver are polluted, the waters of the Syny river are dirty. The water bodies of the Polar Urals are very dirty. High values of IZV are associated with elevated concentrations of benz(a)pyrene, BOD5, manganese, copper, zinc, and aluminum. The water pollution index more characterizes the unfavorable biogeochemical situation in the region. An elevated level of technogenic pollution due to benzo(a)pyrene, the source of which is the combustion of fossil fuels (pyrogenic), is established in the water bodies of the Polar Urals. The surface waters of the surveyed water bodies are low-quality waters.

To the flora of сonjugates (Streptophyta, Conjugatophyceae) of the Valdai District area of the National Park «Valdaiskiy» (Novgorod Region, Russia)

2014 ◽  
Vol 48 ◽  
pp. 81-88
Author(s):  
A. F. Luknitskaya
Keyword(s):  
Species Distribution ◽  
National Park ◽  
Species Abundance ◽  
Water Bodies ◽  
Number Of Species ◽  
First Time

76 species, 3 varieties and 1 form from 21 genera of Streptophyta, Conjugatophyceae (Actinotaenium, Bambusina, Closterium, Cosmarium, Cylindrocystis, Euastrum, Gonatozygon, Haplotaenium, Micrasterias, Mougeotia, Netrium, Penium, Planotaenium, Pleurotaenium, Raphidiastrum, Spirogyra, Spirotaenia, Staurastrum, Staurodesmus, Tetmemorus, Xanthidium) were found in the basins of the Valdai District area of the National Park «Valdaiskiy» (Novgorod Region, Russia). The list of species is annotated with data on the species distribution in 55 collecting sites of 29 water bodies of the national park, and species abundance in collected samples according to Luknitskaya (2009). Among above mentioned genera, the genus Cosmarium is represented by the greatest number of species (20). Staurastrum chaetoceros has been found for the first time for the Novgorod Region.

scholarly journals The RiBaTox web tool: selecting methods to assess and manage the diverse problem of chemical pollution in surface waters

2019 ◽  
Vol 31 (1) ◽  
Author(s):  
Kees J. M. Kramer ◽  
Frank Sleeuwaert ◽  
Guy Engelen ◽  
Christin Müller ◽  
Werner Brack ◽  
...  
Keyword(s):  
Water Quality ◽  
Surface Waters ◽  
Complex Problem ◽  
End Users ◽  
Water Bodies ◽  
Chemical Pollution ◽  
The Novel ◽  
Web Tool ◽  
Novel Approaches ◽  
Local Water

Abstract Chemical pollution of water bodies is a complex problem around the globe. When described by the extremes of the range of problem definitions, water bodies can be chemically polluted by a single compound that is emitted from a point source or an incidental spill, or by chronic diffuse emissions from local and upstream land uses. The resulting mixture exposures can vary in space and time, e.g. due to the use of pesticides in the crop growing season. The environmental management objectives are commonly to protect and restore surface waters against human influences. Currently, chemical pollution is globally judged for a selected set of compounds, by judging each of these individually in comparison with protective environmental quality standards. Research has provided a novel assessment paradigm (solution-focused risk assessment) and novel data, measurement methods and models to improve on current practices. Their adoption and application require establishing novel linkages between the diverse problem definitions and the novel approaches. That would assist water quality professionals to select the most effective option or options to protect and restore water quality. The present paper introduces the RiBaTox (River Basin Specific Toxicants assessment and management) web tool. It consists of short descriptions of the novel approaches (made available as Additional file 1) and a decision tree for end-users to select those. The overview of novel approaches collated in RiBaTox is relevant for end-users ranging from local water quality experts up till strategic policy developers. Although RiBaTox was developed in the context of European water quality problems, the methods provided by RiBaTox are relevant for users from (inter)national to local scales. This paper is part of a series of Policy Briefs from the EU-FP7 project SOLUTIONS (http://www.solutions-project.eu), which provide backgrounds on chemical pollution of surface waters and policy practices and proposed improvements.

scholarly journals A Machine Learning Approach for Estimating the Trophic State of Urban Waters Based on Remote Sensing and Environmental Factors

2021 ◽  
Vol 13 (13) ◽  
pp. 2498
Author(s):  
Shijie Zhu ◽  
Jingqiao Mao
Keyword(s):  
Remote Sensing ◽  
Environmental Factors ◽  
Water Temperature ◽  
Trophic State ◽  
Trophic Levels ◽  
Water Bodies ◽  
Trophic State Index ◽  
Urban Water ◽  
Estimation Model ◽  
Input Variables

To improve the accuracy of remotely sensed estimates of the trophic state index (TSI) of inland urban water bodies, key environmental factors (water temperature and wind field) were considered during the modelling process. Such environmental factors can be easily measured and display a strong correlation with TSI. Then, a backpropagation neural network (BP-NN) was applied to develop the TSI estimation model using remote sensing and environmental factors. The model was trained and validated using the TSI quantified by five water trophic indicators obtained for the period between 2018 and 2019, and then we selected the most appropriate combination of input variables according to the performance of the BP-NN. Our results demonstrate that the optimal performance can be obtained by combining the water temperature and single-band reflection values of Sentinel-2 satellite imagery as input variables (R2 = 0.922, RMSE = 3.256, MAPE = 2.494%, and classification accuracy rate = 86.364%). Finally, the spatial and temporal distribution of the aquatic trophic state over four months with different trophic levels was mapped in Gongqingcheng City using the TSI estimation model. In general, the predictive maps based on our proposed model show significant seasonal changes and spatial characteristics in the water trophic state, indicating the possibility of performing cost-effective, RS-based TSI estimation studies on complex urban water bodies elsewhere.

Conceptual model for minimizing the risk of water pollution in the Kemerovo region

2020 ◽  
pp. 107-118 ◽  
Author(s):  
E. Yu. Kulikova ◽  
Ju. A. Sergeeva
Keyword(s):  
Water Pollution ◽  
Conceptual Model ◽  
Water Contamination ◽  
Coal Industry ◽  
Water Bodies ◽  
Polluted Water ◽  
Mining Operations ◽  
Mine Waters ◽  
Critical Limit

One of the problems of functioning of coal industry enterprises is the formation of mine waters, which are discharged into water bodies and cause their dangerous pollution. The total volume of water pumped by the enterprise includes up to 15 % for the recycling cycle, the remaining 85% is discharged to surface water bodies. As a result, the ecological balance of coal regions is disturbed, their sanitary and hygienic state on the environment worsens, and the quality of coal is reduced due to the intake of polluted water for technological operations. The volume of mine water contamination increases during mining operations at deeper horizons and in difficult mining and hydrogeological conditions. In turn, this leads to pollution and depletion of underground aquifers and the formation of environmental risk factors. In Kuzbass, all these factors contribute to the development of water crisis, since the state of surface reservoirs has already reached a critical limit. Especially dangerous is the process of liquidation of mines. Closing mines and sections disrupt natural water flows, resulting in all water from the aquifers going to deeper horizons. More pollutants enter the water, which poison the underground hydrosphere of the regions. The paper analyzes the pollutants entering the underground and surface hydro grid at coal-fired plants and offers a Conceptual model for minimizing the risk of water pollution.

scholarly journals Long-Term River Water Quality Trends and Pollution Source Apportionment in Taiwan

Water ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1394 ◽  
Author(s):  
Marsha Putri ◽  
Chao-Hsun Lou ◽  
Mat Syai’in ◽  
Shang-Hsin Ou ◽  
Yu-Chun Wang
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Heavy Metal ◽  
Cluster Analysis ◽  
River Water ◽  
Principal Component ◽  
Pollution Level ◽  
Metal Levels ◽  
Metal Monitoring

The application of multivariate statistical techniques including cluster analysis and principal component analysis-multiple linear regression (PCA-MLR) was successfully used to classify the river pollution level in Taiwan and identify possible pollution sources. Water quality and heavy metal monitoring data from the Taiwan Environmental Protection Administration (EPA) was evaluated for 14 major rivers in four regions of Taiwan with the Erren River classified as the most polluted river in the country. Biochemical oxygen demand (6.1 ± 2.38), ammonia (3.48 ± 3.23), and total phosphate (0.65 ± 0.38) mg/L concentration in this river was the highest of the 14 rivers evaluated. In addition, heavy metal levels in the following rivers exceeded the Taiwan EPA standard limit (lead: 0.01, copper: 0.03, and manganese: 0.03) mg/L concentration: lead-in the Dongshan (0.02 ± 0.09), Jhuoshuei (0.03 ± 0.03), and Xinhuwei Rivers (0.02 ± 0.02) mg/L; copper: in the Dahan (0.036 ± 0.097), Laojie (0.06 ± 1.77), and Erren Rivers are (0.05 ± 0.158) mg/L; manganese: in all rivers. A total 72% of the water pollution in the Erren River was estimated to originate from industrial sources, 16% from domestic black water, and 12% from natural sources and runoff from other tributaries. Our research demonstrated that applying PCA-MLR and cluster analysis on long-term monitoring water quality would provide integrated information for river water pollution management and future policy making.

scholarly journals The landscaping of urban agglomeration park systems

Vestnik MGSU ◽  
2020 ◽  
pp. 294-306
Author(s):  
Aleksandra V. Ostyakova ◽  
Ekaterina V Pluisnina
Keyword(s):  
Water Body ◽  
Practical Importance ◽  
Pond Water ◽  
Water Bodies ◽  
Small Rivers ◽  
Urban Water ◽  
Normative Documents ◽  
Sources Of Pollution ◽  
City Water ◽  
Surrounding Areas

Introduction. Studying water body ecological problems and ensuring the necessary level of sanitary maintenance and landscaping of the reservoirs with the surrounding areas are relevant due to the inadequate environmental condition of a large number of urban water bodies and small rivers within settlements. Materials and methods. The review of the available normative documents and the carried-out actions on the improvement of city water objects is given. Based on the visual study of the state of the pond banks at the Karbyshev Park at the settlement of Nakhabino, Moscow region, water quality indicators, sources of pollution of the pond, the article concluded on the unsatisfactory ecological and aesthetic condition of this urban pond. The objective of this paper is to analyze the existing negative environmental factors affectig the water body and to propose an option of the site landscaping and further safe usage. Results. A description of the Karbyshev Park territory is given. Also, negative factors influencing the pollution of the pond banks, and the quality of pond water are specified. A proposal contains a list of necessary types of activities on cleaning and improving the pond bowl and surrounding territory under the condition of preservation of its ecosystem. As a result of the integrated assessment of the pond ecological state, a model of the urban water body was created, and a variant of its ecological reconstruction was proposed. Conclusions. The study is of practical importance for accounting and elimination of environmental problems of urban water bodies of the Central European Russia and proposals of measures for their improvement and reclamation.

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