Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 10

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  water resource management
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
The main target of this paper is to develop the hypothesis that water intake fees can be an efficient tool for the management of water consumption in Poland. The sample used in the research consists of 600 municipal water operators with a market share over 80% in the municipal sector. The analysis comprises several tasks: firstly – the investigation of the relation between water intake fees and the structure of the costs of water provision; secondly – the investigation of the influence of fees on unit prices and a review of their changes over the last decade; and, thirdly – the analysis of demand elasticity in order to estimate demand reaction. The results obtained give an estimation of possible savings in water usage in Poland that would result from changes in the system of water intake. The analysis includes all the mechanisms of fee reductions, or exemptions for certain purposes, of existing water intake in Poland. This analysis compiles, compares and processes incremental results from several pieces of research led by the author over the last 10 years for the Ministry of the Environment the National and Regional Water Boards and also for the Institute for Meteorology and Water Management. Research was focused on the economic analysis of water usage from a more general view, however, water intake fees are taken into account in these papers, although not as separate targets for investigations.
Nigeria has greater challenges when it comes to water development and management. The current water resources development and supply status is unacceptably low and needs a major transformation. With the rapid growth in population, urbanization, industrialization and competition for economic development, water resource has become vulnerable to depletion and degradation. Management of this valuable resource is determined by its acceptability and utilization in terms of quantity and quality. Due to imbalance between demand and availability, management approaches are facing various ethical dilemas. This paper therefore considers the water supply and sanitation situation in the country and the challenges facing the sector. The paper calls for institutional reforms and review of policy targets, define key elements for the development of action and investment plans as well as provide some guidelines in order to minimize duplication and maximize effectiveness. The paper also suggested strategies and viable framework/agenda for sustainable water supply and emphasizes that the machinery of water resources development and management needs an urgent overhauling with the aim of streamlining the overlapping functions of the various agencies that have operated the system up till now. More importantly, the paper suggested integrated approaches/strategies for sustainable management as well as offers relevant policy recommendations for water resources management in Nigeria.
Irrigation is one of the most important factors of surface water resources management, therefore water saving irrigation farming is desired which could promote better utilisation of the agricultural potential of Hungary. In our article we deal with the situation, problems and development possibilities of water resources management, especially with the development possibilities of irrigation farming.
The significance of solid waste management in ecohydrology research is obvious given the potential threat that solid waste poses on the intrinsic services of water purification, particularly in areas of high temperatures and precipitation levels. Improper waste disposal systems have adverse repercussions on environmental sanitation and impede water quality management efforts. The potential risk to water and soil pollution is surmountable in the areas where waste collection and disposal efforts are constrained. We used a GIS based meso-scale approach to identify solid waste ecological hot spots. Results indicate that solid waste hot spots are characterised by poor solid waste management, high temperatures, and high rainfall and are likely to compromise the ecohydrological processes of both surface and underground water systems. The most affected river basins are found in south and north-western parts of Ethiopia. Climate change is likely to worsen the situation in the areas where precipitation and temperature levels are expected to rise. We recommend that ecohydrologists prioritize such areas for improved water resource management.
With population growth, rising living standards and increasing attention given to environmental issues Water resources management has increased in many countries, water is fast becoming a scarce input. It is study of human development in the twentieth century, and a judgment is only a question of human optimization of water resources and their future generations what it was composed of such questions under the present conditions of as the water crisis (crisis of the Third Millennium) have mentioned, it is appropriate here because the water crisis and lack of use. the effectiveness of this critical resource of local, regional and trans-national and gone and the world has become a complex issue. In this regard, planning and optimal utilization of water resources of the fundamentals principles of sustainable development of natural resources optimal design of irrigation and fertilization management can control the transport of contaminants or so that any combination of water management and to reduce nutrient runoff and deep percolation, providing opportunity for solute infiltration ,reducing sediment and gradually applying fertilizer in due to problems with the economy and ease of use can be substantial.
The quality of the surface water (rivers) around Warri metropolis was evaluated using Water Quality Index (WQI) techniques. The study was carried out to assess the suitability of the water samples collected from different river bodies’ around Warri metropolis. The water quality index (WQI) was determined based on their various physico-chemical parameters such as pH, temperature, dissolved oxygen, electrical conductivity, total dissolves solids, total suspended solids, sulphates, nitrates, phosphates, chlorides, turbidity, biochemical oxygen demanded. The water quality indexes values obtained varied greatly from 110.12 to 821.5. The result is quite high due to high turbidity (9mg/l – 119mg/l) and total suspended solid (10mg/l – 124mg/l). The presence of faecal coliform in the various water bodies is very alarming which ranges from 2 – 16 cfu against the stated standard of nil by most regulatory agencies and as such may pose detrimental health effect when consumed by individuals within those areas if not properly treated. This may be due to poor waste management practice along the river's course. To avert this process, effective waste management and control along the water course should be encouraged.
Ecohydrology has the potential to make a significant contribution to the global need for improved water resources management. An investigation was conducted into educational and capacity building activities related to ecohydrology in an effort to better integrate understanding, promote awareness of existing activities, and to recommend action for global knowledge translation. Based on a survey of key partners and a review of the literature, three key observations were made: 1) consistency in the use of the definition and key concepts behind ecohydrology must be achieved, 2) development of a framework for courses in ecohydrology be developed for application on a regional and global scale and 3) there may be existing educational materials on ecohydrology but they are not well publicized or accessible even to seasoned practitioners. These recommendations are currently being implemented with the development and testing of three pilot courses.
This paper is based on a country report for Ethiopia prepared as a part of the ecohydrology component of IHP UNESCO’s FRIEND/Nile-phase II Project. It reviews past and current research in the Lake Tana sub-basin around the lake. The objective of the study was to determine the ecohydrological status of the Lake as a tool for integrated water resource management in improving the sustainability of the quantity and quality of freshwater resources in the Nile basin. The preliminary results show that reduced lake water level with its annual fluctuations and seasonal floods associated with high flows are becoming amplified and frequent, and the total average annual sediment load of the four major tributaries shows an increasing trend. Source pollution from urban waste and rural agriculture, and degradation of biota in the catchment are the two main environmental threats for the lake ecosystem. Knowledge gaps were identified and future research needs were recommended along with suggestion of some potential phytotechnologies to be applied in the study area.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.