scholarly journals STUDY OF CHANGES IN THE ECOLOGICAL CONDITION OF THE PSEL RIVER

2021 ◽  
pp. 45-51
Author(s):  
Svitlana Kovalenko ◽  
Roman Ponomarenko ◽  
Oleg Tretyakov ◽  
Yevhen Ivanov
Keyword(s):  
Surface Water ◽  
Water Resources ◽  
Water Intake ◽  
Water Body ◽  
Ecological Status ◽  
Water Source ◽  
Ecological Assessment ◽  
Ecological Condition ◽  
Effective Model ◽  
State Agency

The article analyzes the changes in the ecological status of the water of the Psel River and identifies possible causes of pollution. The change of ecological status of the surface water source was carried out by analyzing the data of monitoring and ecological assessment of water resources of Ukraine of the State Agency of Water Resources of Ukraine for the period 2012 – 2020. The analysis was performed according to the control of water intake from 6 posts within the river Psel. As a result of the analysis, it was found that further change in the ecological status of the surface water body in the direction of its improvement requires the development and implementation of a reliable and effective model for forecasting its ecological status. In the future, the results of the study can be used in the development and implementation of a reliable and effective model for forecasting the ecological status of the river Psel.

scholarly journals ORGANIZATION OF SURFACE WATER MONITORING IN SUMY REGION

2021 ◽  
pp. 17-22
Author(s):  
Larysa Hurets ◽  
Olena Vakarchuk ◽  
Inna Trunova ◽  
Roman Ponomarenko ◽  
Eleonora Darmofal ◽  
...  
Keyword(s):  
Surface Water ◽  
Water Resources ◽  
Water Resources Management ◽  
Surface Waters ◽  
Ecological Status ◽  
Ecological Condition ◽  
The State ◽  
Water Monitoring ◽  
Resources Management ◽  
Transboundary Watercourses

The article presents an analysis of water monitoring organization in the Sumy region. The reform of water resources management has placed the main burden on the implementation of the state water policy and ensuring the proper ecological condition of the water basin at the regional level of management. The European approach in the field of water resources management pays attention to water monitoring, which is an integral part of the state system of environmental monitoring in Ukraine. An analysis of implementation the basin principle in the region had been conducted. There are two sub-basins in the region: Desna Sub-Basin and Middle Dnieper Sub-Basin. Within the Desna sub-basin 121 massifs of surface waters have been identified, within the middle Dnieper sub-basin 230 massifs have been identified. The analysis of monitoring data on the state of surface waters, on the organization of monitoring of transboundary watercourses is carried out. The study found that farms have a significant impact on the condition of rivers. Due to the aggravation of the political situation, monitoring of transboundary watercourses is carried out only on the territory of Ukraine. The beginning of the introduction of a new approach to monitoring in Sumy region lays the foundations for the accumulation, systematization of data on the state of surface water bodies with the subsequent possibility of analyzing the existing situation with effective management decisions to achieve "good" ecological status of river basins.

scholarly journals Water resources and groundwater quality in North Peloponnesus (Greece)

2013 ◽  
Vol 7 (3) ◽  
pp. 340-353 ◽  
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Water Resources ◽  
Water Supply ◽  
Urban Areas ◽  
Sea Water ◽  
Water Source ◽  
High Water ◽  
Comprehensive Management ◽  
Management Scheme

Groundwater plays an important role for urban and agricultural water supply in northern part of Peloponnesus. Despite increasing environmental awareness in this area, groundwater is a resource that is being stressed. Groundwater provides about 80% the total quantity of water supply. Distribution of water resources is nonhomogeneous in this region. In general the eastern part is semiarid, whereas the western part is supplied with abundant water. Surface water potential in North Peloponnesus estimated to be 0.9- 1.2x109 m3 y-1. Overexploitation of groundwater and the extensive agriculture has created environmental problems in some aquifers (sea water intrusion, nitrate pollution). Seawater intrusion occurs in some coastal aquifers, where negative water balance has been established. High percentage of the examined samples exceeded the maximum admissible nitrate concentration of 50 mg l-1, set by EU for drinking water. Groundwater in urban areas has been contaminated to varying degrees. The water quality is classified into Ca-HCO3 type (fresh water) and Na-HCO3 or Na-Cl type (brackish waters) in the coastal part, due to seawater intrusion. Some recommendations are made in order to safeguard high water quality and to develop new ways of providing water source in the study area. Moreover, an integrated and comprehensive management scheme should be applied, aiming at sustainability of water resources and based on surface water and groundwater exploitation, simultaneously.

scholarly journals Dynamic Monitoring of Surface Water Area during 1989–2019 in the Hetao Plain Using Landsat Data in Google Earth Engine

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3010 ◽  
Author(s):  
Ruimeng Wang ◽  
Haoming Xia ◽  
Yaochen Qin ◽  
Wenhui Niu ◽  
Li Pan ◽  
...  
Keyword(s):  
Surface Water ◽  
Water Resources ◽  
Water Body ◽  
Vegetation Index ◽  
Water Area ◽  
Google Earth ◽  
Body Area ◽  
Hetao Plain ◽  
Google Earth Engine

The spatio-temporal change of the surface water is very important to agricultural, economic, and social development in the Hetao Plain, as well as the structure and function of the ecosystem. To understand the long-term changes of the surface water area in the Hetao Plain, we used all available Landsat images (7534 scenes) and adopted the modified Normalized Difference Water Index (mNDWI), Enhanced Vegetation Index (EVI), and Normalized Difference Vegetation Index (NDVI) to map the open-surface water from 1989 to 2019 in the Google Earth Engine (GEE) cloud platform. We further analyzed precipitation, temperature, and irrigated area, revealing the impact of climate change and human activities on long-term surface water changes. The results show the following. (1) In the last 31 years, the maximum, seasonal, and annual average water body area values in the Hetao Plain have exhibited a downward trend. Meanwhile, the number of maximum, seasonal, and permanent water bodies displayed a significant upward trend. (2) The variation of the surface water area in the Hetao Plain is mainly affected by the maximum water body area, while the variation of the water body number is mainly affected by the number of minimum water bodies. (3) Precipitation has statistically significant positive effects on the water body area and water body number, which has statistically significant negative effects with temperature and irrigation. The findings of this study can be used to help the policy-makers and farmers understand changing water resources and its driving mechanism and provide a reference for water resources management, agricultural irrigation, and ecological protection.

scholarly journals Evaluation of the level of human impact on the river sediments in Russia

2019 ◽  
Vol 135 ◽  
pp. 01051
Author(s):  
Valentina Kurochkina
Keyword(s):  
Water Quality ◽  
Water Body ◽  
River Sediments ◽  
Ecological Status ◽  
Ecological Condition ◽  
Water Bodies ◽  
Water Control ◽  
Anthropogenic Pressures ◽  
Channel Processes ◽  
The Impact

The growing race of urbanization and population growth lead to anthropogenic load on the water is increasing all the time. High population density and considerable industrial potential of the urbanized territory are becoming dominant sources of pollution of water bodies. This trend identifies progressive pollution of water bodies and the growing need for sanitary-ecological status of water control facilities. Natural chemical composition and properties of water in surface water bodies are formed depending on the hydrological, soil, climate and other features. Flowinduced suspensions in urban watercourses is one of the main ways of contamination distribution in urbanized areas. For monitoring and reducing the negative impacts on the water quality of watercourses requires estimation of anthropogenic pressures and studying its spatio-temporal variability. Analysis of anthropogenic stress on water objects allows you to set the relationship between the number of coming in the water body of pollutants and concentrations of chemicals in the water. The main aim is to determine the amounts of contaminants accumulated in the river riverbed during the period of the economic utilization of the watercourse and to assess the impact of urbanization on its ecological status. The article deals with the influence of anthropogenous load on river hydraulics and properties of channel sediments that determine the course of channel processes and overall ecological condition of water objects. The interrelation between water body condition, water quality and sediment pollution is presented. Method of estimation of anthropogenous load pollutants in river of urban area sis proposed. Comparative analysis of the load for the rivers of Russia with various water run-off is demonstrated.

Restoration of fish passage: development and results of a master plan established for the Ruhr river basin

2005 ◽  
Vol 52 (9) ◽  
pp. 77-84 ◽  
Author(s):  
M. Weyand ◽  
M. Redeker ◽  
E.A. Nusch
Keyword(s):  
Surface Water ◽  
River Basin ◽  
Ecological Status ◽  
Fish Passage ◽  
Ecological Condition ◽  
Population Diversity ◽  
Water Bodies ◽  
Suitable Habitat ◽  
Master Plan ◽  
River Continuum

According to the central aim of the European Water Framework Directive, the protection and sustained management of the aquatic ecological system, the ecological condition of a specific type of water, will be the primary parameter in future. Aiming at good ecological status in surface water bodies, population diversity and abundance of fish and macroinvertebrates is decisive. Free passage in river systems, to allow the natural migration of fish and all other aquatic organisms, is a prerequisite. To achieve this for the Ruhr River Basin a study has been commissioned in order to develop a master plan for river continuum restoration. Sustainable development aimed at promoting biodiversity in the surface water body system is a key objective. This project is complemented by investigations of the sediment – which is the nursery of the fish – in the rivers to identify river sections or tributaries which obviously provide a suitable habitat for the successful reproduction of big Salmonidae. The master plan illustrates the inherent problems of projects aimed at the restoration of fish passage in water bodies which are strongly affected by anthropogenic modifications. The results obtained may as well be transferred to other catchments with similar use patterns.

scholarly journals Assessment of geoecological conditions and the depletion risk of the river Belaya catchment area

2020 ◽  
Vol 157 ◽  
pp. 02003
Author(s):  
Elvira Nafikova ◽  
Alexey Elizaryev ◽  
Ayaz Ismagilov ◽  
Inna Dorosh ◽  
Aidar Khaidarshin ◽  
...  
Keyword(s):  
Water Resources ◽  
Catchment Area ◽  
Ecological Status ◽  
Geological Structure ◽  
Annual Runoff ◽  
Ecological Condition ◽  
Republic Of Bashkortostan ◽  
Average Annual Runoff ◽  
Catchment Areas ◽  
Depletion Risk

At the present time water resources in the Republic of Bashkortostan (Russia) are exposed by negative anthropogenic influence. Natural processes also contribute to the depletion of water resources. The implementation of the water management system raises a number of methodological problems: the uncertainty of the criteria for assessing the ecological status of water bodies; the complexity of the relationship between the quantitative and qualitative characteristics of the water body due to the regional natural, anthropogenic, climatic features of the territory. The aim of this study is to development of a method for calculating the risk of water resources depletion. The method was tested on the river Belaya (Republic of Bashkortostan, Russia) catchment area. In calculating of water resources depletion risk several parameters were taken into account in particular: the area of watershed, catchment data of surface water and groundwater, data of land use, the average annual runoff, karst phenomena, vegetation. In this paper we use the method of import of geo data containing the soil composition, vegetation, geological structure and forest to assess the ecological condition of the river Belaya. There are defined the catchment areas of the river Belaya, which required immediate management solutions. Mapping of the Belaya River catchment areas requiring immediate management decisions was carried out.

scholarly journals DETERMINATION OF FACTORS OF FORMATION OF QUALITATIVE COMPOSITION OF SURFACE WATER OBJECTS BY THE METHOD OF MAIN COMPONENTS (ON THE EXAMPLE OF RIVERS OF THE DNIEPER BASIN)

2021 ◽  
pp. 31-35
Author(s):  
Roman Ponomarenko ◽  
Leonid Plyatsuk ◽  
Josef Zat’ko
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Water Resources ◽  
River Runoff ◽  
Water Bodies ◽  
State Agency ◽  
Local Conditions ◽  
Surface Water Bodies ◽  
Main Components

The article analyzes the water quality of surface water bodies (on the example of rivers of the Dnieper basin) by the method of main components, identifies and interprets the main factors that form long-term variability of water quality of surface water bodies and make different contributions to the total variance. The research was carried out according to the samples of control water intake of the Dnieper River within the Basin Water Resources Management at 12 posts, for the period from 2011 to 2020. The leading factors were identified: plant and animal organisms (12…39 %), leaching of Fe- and Cu-containing minerals (10…29 %). The article shows that in the formation of the chemical composition of the water of the rivers of the studied region is determined by the factor of ion from the rocks on which the formation of the catchment. A factor characterizing the local conditions of river runoff formation has been identified - the process of groundwater discharge, which is manifested in changes in the concentrations of silicon and nitrates. In addition, a negative dependence of changes in the content of silicon ions and nitrates on temperature. The originality of the study is based on an integrated approach, which includes research based on available data in the State Agency of Water Resources of Ukraine, which takes into account the principles of biodiversity conservation, sustainable use of water resources, river management and basins, monitoring and evaluation of their status. In the future, the proposed approach may be the subject of research in the direction of establishing factors that characterize the local conditions of formation of river runoff, including taking into account the man-made load on it.

scholarly journals GIS-based Assessment of the Assimilative Capacity of Rivers in Dnipropetrovsk Region

2018 ◽  
Vol 27 (2) ◽  
pp. 274-285
Author(s):  
D. Kulikova ◽  
O. Kovrov ◽  
Yu. Buchavy ◽  
V. Fedotov
Keyword(s):  
Water Resources ◽  
River Runoff ◽  
Aquatic Ecosystems ◽  
Ecological Status ◽  
Capacity Utilization ◽  
Water Bodies ◽  
State Agency ◽  
Anthropogenic Factors ◽  
Assimilative Capacity ◽  
The Impact

The objective of this paper is to identify the level of changes in the ecological status of surface reservoirs of Dnipropetrovsk region under the impact of anthropogenic factors and to find a rationale for the limit loads on aquatic ecosystems, based on a quantitative assessment of their assimilative capacity values using GIS-technologies.To characterize and evaluate economic activity in the river basins of Dnipropetrovsk re- gion, the data of state statistical reporting by the form of 2-TP "Water resources management" of the State Agency for Water Re- sources of Ukraine were used. Parameters characterizing the assimilative capacity of water bodies were determined by taking into consideration the perennial average values of river runoff resources of the priority watercourses of Dnipropetrovsk region in the years with varying degrees of supply: with an average (50%), a low (75%) and a very low (95%) river water content. The main indicators characterizing the assimilative capacity of the water bodies of Dnipropetrovsk region are actual and necessary multiplicity of waste- water dilution, the limit to assimilative capacity of surface reservoirs, index of assimilative capacity utilization of river runoff re- sources of varying degrees of supply. A classification that characterizes the level of assimilative capacity utilization for water bodies is proposed. The level of assimilative capacity utilization of the Dnipro River in the reservoir areas, regardless of the degree of river runoff supply, is estimated as “allowable” . At 95% degree of river runoff supply, the level of assimilative capacity utilization of the Oril and Vovcha Rivers is characterized as “moderate”, the Samara River (after the confluence with the Vovcha River) as “high” and the Ingulets River with tributary the Saksagan River, and the Samara River (before confluence with the Vovcha River) as “veryhigh”. It should be noted that irrespective of the level of river runoff supply, the index of assimilative capacity utilization of the Samara River (before its confluence with the Vovcha River) exceeds the limit value by 19-115 times. For the spatial analysis of hydrological parameters and visualizion of the data in the form of thematic maps, the geoinformation system “Rivers of Dnipropetrovsk region” was developed on the basis of the ESRI ArcGIS Desktop10 software package. Using the geoprocessing tools, on the basis of hydrological indices of 7 priority watercourses for each of the 22 administrative-territorial districts of Dnipropetrovsk region, the main indicators characterizing the assimilative capacity of water resources were calculated and ranked. The use of indicatorscharacterizing the assimilative capacity of river runoff resources allows us to identify the threshold levels of anthropogenic transfor- mation of aquatic ecosystems, develop and implement environmental measures to improve the ecological status and ensure environ- mental safety of surface reservoirs.

Sign in / Sign up

Export Citation Format

Share Document