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1.
In recent years there has been a large increase in the number of small towns with populations between 5,000 and 10,000 in the Middle East. They represent an immense variety of urban types fulfilling a great range of functions. This paper looks at the characteristics of these settlements and argues that they have been largely neglected in the study of Middle East urbanisation and calls for comprehensive national urban planning orientated towards the needs of small towns.  相似文献   

2.
Water disputes in the Middle East are not a new phenomenon. For the first time, however, three parties in the region, Jordan, Israel, and the PLO for the benefit of the Palestinian Authority have concluded a "regional water agreement" within the framework of the Multilateral Peace talks. For the first time, the rationale behind the agreement is being made public by the author, who was the "neutral" facilitator of the negotiations. The article discusses some of the main elements, including issues related to water scarcity as a driving force of conflicts; application of a "track-two diplomatic" approach; some lessons learned; as well as some ethical questions related to international negotiation.  相似文献   

3.
The Middle East is renowned as a water-scarce region. The severity of the problem in Palestine is not a result of climatic misfortune, however, but of regional water allocation and distribution of these resources, especially between Palestinians and Israelis. Palestinian water supplies are currently insufficient to satisfy demand, and are increasingly degraded. Projected increases in regional population and demand are high, making it urgent to come to grips with the water shortage. Any attempt at resolution should consider three related areas within a single integrated water management formula. First, attempts must be made to resolve allocation disputes, governed by principles of international water law; second, conservation and appropriate utilization of water must be emphasized; and third, supplies must be enhanced, either through water import or other means. Only if the water shortage is analysed in an integrated manner will it be possible to ensure full resolution of the Palestinian-Israeli hydropolitical dispute .  相似文献   

4.
Climate change and energy security are global challenges requiring concerted attention and action by all of the world’s countries. Under these conditions, energy supplier and exporter countries in the Middle East region are experiencing further challenges, such as increasing domestic energy demand while energy exports have to concurrently be kept at high levels. Middle East countries process the largest proven oil and gas reserves in the world and contribute a large fraction of the world’s CO2 emissions from the use of these as fuels both domestically and internationally. This paper addresses different policies that could dramatically change the future course of the Middle East region toward a zero CO2 emission energy system. To this aim, an integrated energy supply–demand model has been developed to analyze required commitments including renewable energy and energy efficiency targets and the potential of nuclear power, all of which should need to be considered in order to reduce CO2 emissions by 2100. The results indicate that nearly 43% of the global energy of the Middle East region can be supplied from non-fossil fuel resources in 2100.  相似文献   

5.
A diversion system has been designed to carry the flow from East Fork of Coal Creek around the area proposed for mining at Thunder Basin Coal Company's (TBCC) Coal Creek mine in Campbell County, Wyoming. This paper describes the field and analysis procedures necessary to prepare the diversion design and impact evaluation, and the innovative concepts developed for the diversion system design to minimize impacts on downstream channel stability. Under the proposed diversion system design, water from the East Basin of Coal Creek will be diverted at two locations. At one location, flow will be impounded by a small dam and decanted by a pump through a pipeline into East Fork at the location of the second diversion. At this location, a training dike will be placed across the stream channel to divert flows into a diversion channel. Gravity flow along the diversion channel will deliver water to a playa area which will be converted into a detention basin by placing a small dam across its southern end. Flows up to the magnitude of the 24-hour 2-year peak flow will be passed directly through the detention basin into Middle Fork with negligible attenuation of flow rates. For less frequent events, water will be stored in the detention basin in order to prevent velocities in Lower Middle Fork from exceeding the maximum permissible velocity above which scouring may occur. Evaporation and seepage losses from the diversion system were estimated to be small and should be more than offset by the addition of water from the playa drainage basin into the Coal Creek drainage. Velocities predicted for the Lower Middle Fork after-the diversion is constructed are expected to be low enough that significant erosion of the channel is not expected to occur.  相似文献   

6.
A quantitative estimate of the petroleum reserves of the Middle East and North Africa is presented and analysed in terms of the region's ability to meet current market demand for a sweet light crude. Costs of Middle East production are compared with those of other oil-producing regions. With an average costs of US$4/bbl, the Middle East has both the largest oil reserves and the lowest cost oil in the world. While new and improved technology of exploration and production may lessen this price advantage in the future, it will not eliminate it. Because of these two factors, the Middle East will continue to play an important role on the world energy stage well into the next century.  相似文献   

7.
我国水事纠纷解决机制探析   总被引:2,自引:0,他引:2  
水事纠纷解决机制是一系列水事纠纷解决方式所组成的整体,该机制是民事主体或行政区域水资源权利受到侵害,以及遭受水污染侵权损害的重要救济途径。虽然我国相关法律对水事纠纷的解决方式已作出规定,但是这些法律规定较为分散、不系统,还没有形成一个有机的整体,造成运用该机制解决水事纠纷的效果较差。为了保障水事纠纷及时、有效地得以解决,完善我国的水事纠纷解决机制已迫在眉睫。  相似文献   

8.
Abstract: In 2002, China launched the South‐to‐North Water Transfer Project after completing a 50‐year feasibility study. By 2050, the three‐route (i.e., East, Middle, and West) project will be capable of transferring 44.8 billion m3/year of water from the water rich Yangtze River to the arid north to alleviate water shortage and help secure a balanced social and economic development across the nation. However, diversion of such a large quantity of water could profoundly change the riverine environment of the upper Yellow River and the lower reach of the Han River, a tributary of the Yangtze River and the water supplying area of the project’s Middle Route, because of changes in the annual discharge. Secondary salinization seems inevitable in the water receiving areas of the North China Plain, and decrease in the discharge of the Yangtze River will result in seawater intrusion into the Yangtze Delta. This paper describes the project and discusses its environmental implications. Additionally, a long‐term monitoring strategy under the umbrella of the Chinese Ecological Research Network is proposed for environmental monitoring.  相似文献   

9.
ABSTRACT: The karez is a traditional irrigation water source, consisting of hand-dug horizontal wells, that is still used in parts of South Asia, the Middle East, and North Africa. This paper describes the construction, management, and current problems of karez irrigation systems based on investigations conducted in Baluchistan Province, Pakistan. While karezes have served irrigation needs well in the past, they are now threatened by high costs of labor for construction and maintenance, and by the encroachment of tubewells which lower the water tables on which the karez systems depend. Possible methods for improving karez performance and needs for research are discussed.  相似文献   

10.
Increasing water scarcity and stress are leading many nations to securing supplies for present and future water uses. National objectives are more and more pointed towards water security and the close links with food security and other macro-economic and sectoral aspects. Water security is seen as an important aspect of national and regional security and international positions on water often have a political dimension that reflects broader national objectives. Available options for sharing transboundary resources are established on the basis of general legal principles such as equitable utilization and absence of appreciable harmful transboundary effects downstream and others such as established historical utilization. These principles and doctrines must be fully understood by the advisers serving on the negotiating teams of international water treaties and agreements. From these perspectives, the paper recognizes the importance of the structural and strategic uncertainty in international relations. Co-ordination or harmonization of national policy, as an integrated part of, and administrated under existing frameworks for, regional co-operation are proposed as realistic, efficient and practicable approaches, alternative to more intensive co-operation and complicated planning and coordinating mechanisms. The article also highlights the need for training of legal specialists in countries which contemplate negotiating or re-negotiating water treaties or agreements.  相似文献   

11.
黄河流域是我国重要的生态功能区,是实现国家粮食安全的重点区域。本文梳理了近期黄河流域的相关研究,从粮食安全视角下分析了黄河流域现阶段在流域水效率、流域水管理机制、流域水生态文明三方面的问题,并提出了关于黄河流域大保护与高质量发展的两方面建议。一是创新流域水管理机制,服务国家粮食安全。积极改进水资源管理方式,加大节水宣传教育力度,加强黄河流域水土流失综合治理,合理调控水价,完善黄河流域水权市场建设。二是践行"两山"理论,提升流域水生态文明。建设"四大体系"和"七大区域",推进生态廊道建设;转变经济发展方式;提前布局水生态文明建设。  相似文献   

12.
This paper discusses climate, land, energy and water (CLEW) interactions in Burkina Faso. It shows that integrated assessments of resource use at the national level can provide important insights and benefits, especially for a resource constrained least developed country. Agricultural policy is shown to have strong implications for energy use, whereas energy policies are found to be strongly interrelated with water constraints. Without an integrated and coordinated approach, strategy and policy formulation efforts to increase energy, food and water security could become both incoherent and counter‐productive.  相似文献   

13.
ABSTRACT: Water is, and most likely will continue to be, one of the main concerns and potential causes of instability in the Middle East (ME). The contribution of the existing renewable water resources is limited and can not fulfill the long-term projected gap between water supply and demand for most of the countries in the ME. An integrated regional approach for fulfilling this gap was preferred. A regional institutional framework was proposed for the implementation of this integrated regional approach and consists of a regional water board operating through three units for technical, implementation, and management aspects of project and activities. An analysis of the regional water supply and demand development, the design and policy making of the proposed institution, technology and water markets, cooperation, actors and beneficiaries, finances, and expected obstacles and constraints to the establishment and sustainable operation of the proposed institution are included.  相似文献   

14.
For centuries, local and indigenous water rights and rules in the Andean region have been largely neglected and discriminated against. The process of undermining local communities’ water access and control rights continues up to today and not only is it headed by powerful local, national and international water‐use actors encroaching local rights — it is also a direct consequence of vertical State law and intervention practices, and the latest privatization policies. Recognition of and security for the diverse and dynamic local rights and management frameworks is crucial for improving rural livelihoods and even national food security in Andean countries. At the request of the Government of Ecuador — in which at that time the indigenous movement had its political participation — a research mission was organized to formulate a proposal for institutional reform, aiming at the strengthening of the national irrigation sector. In this article, some basic mission results are outlined and analyzed within the scope of four concepts (institutional viability, political democracy, equity, and water rights security), and practical elements for institutional reform are suggested, not only for the Ecuadorian irrigation sector but also other settings. The complementary roles of central Government, local governments and water user organizations in water resources management are emphasized as is the need to strengthen enabling legal and policy frameworks. The importance of translating constitutional recognition of local and indigenous rights and common property systems into practical procedures and institutional structures is also stressed.  相似文献   

15.
ABSTRACT: In the arid West, the development and implementation of water policy often results in disputes among water users, resource managers, and policy makers. Although significant attempts have been made to improve public involvement and dispute resolution in water resources planning, the traditional planning process has not historically played this role for a variety of reasons. Water resources planning can become a forum for proactively resolving water policy disputes by employing the principles of environmental dispute resolution. The purpose of this article is to explore the role of collaborative, consensus-building planning processes in resolving water policy disputes. The Montana State Water Plan is evaluated as an example of such a process, and a model state water planning process is outlined.  相似文献   

16.
Accelerated expansion of wastewater services to small communities in the Middle East and North Africa (MENA) is essential in order to address serious concerns over water scarcity and pollution in addition to meeting the demand for convenience and protecting public health. Centralized and conventional wastewater systems are currently the preferred choice of planners and decision-makers in MENA. Water and funding are not available to provide these centralized conventional services to small communities. This paper presents an integrated approach to sustainable wastewater management for small communities in MENA under the severe water resources crisis. The approach calls for a paradigm shift from centralized conventional wastewater systems to decentralized wastewater systems. Management of wastewater in MENA should start at home. Wastewater generation should be reduced through a combination of domestic water conservation measures. On-site systems must be improved and monitored to control pollution and to recover water for non-potable water uses. Should the circumstances not allow the use of on-site systems, wastewater should be transported and managed through a community system applying the principles of decentralized wastewater management and using the settled sewers for wastewater transportation where appropriate. This approach will facilitate the accelerated and sustainable extension of environmentally responsible wastewater services to MENA's small communities. It offers great potential for cost reduction, accommodates the necessary domestic water conservation efforts, reduces freshwater inputs in wastewater transportation thus eliminating unnecessary demand on freshwater, reduces associated environmental risks and increases wastewater reuse opportunities.  相似文献   

17.
Irrigation water management is crucial for agricultural production and livelihood security in Morocco as in many other parts of the world. For the implementation of an effective water management, knowledge about farmers' demand for irrigation water is crucial to assess reactions to water pricing policy, to establish a cost-benefit analysis of water supply investments or to determine the optimal water allocation between different users. Previously used econometric methods providing this information often have prohibitive data requirements. In this paper, the Contingent Valuation Method (CVM) is adjusted to derive a demand function for irrigation water along farmers' willingness to pay for one additional unit of surface water or groundwater. An application in the Middle Draa Valley in Morocco shows that the method provides reasonable results in an environment with limited data availability. For analysing the censored survey data, the Least Absolute Deviation estimator was found to be a more suitable alternative to the Tobit model as errors are heteroscedastic and non-normally distributed. The adjusted CVM to derive demand functions is especially attractive for water scarce countries under limited data availability.  相似文献   

18.
马春燕 《四川环境》2010,29(4):125-130
由于水资源的流动性,水污染事故常常影响到上下游不同的行政区的生态环境,跨行政区域水污染纠纷几乎成了中国水污染治理的一项制度痼疾。2008年新修订的《中华人民共和国水污染防治法》第二十八条对跨行政区域水污染纠纷的解决做了原则性的规定,所以根据该条的规定对跨行政区域水污染纠纷的范围、解决方式的效力以及救济方式进行研究,有利于更好的解决跨行政区域水污染纠纷。  相似文献   

19.
ABSTRACT: In developing water quality models for lakes and reservoirs, the assumptions of one-dimensionality (i.e., water quality changes are significant only in one dimension – usually depth), as well as two-dimensionality (considering the length and depth of the water body), have been utilized to predict water quality. In both caws, the assumption of lateral homogeneity is made. A field study was undertaken to determine the change of water quality in the lateral dimension. The main study reservoir was Center Hill Lake in Middle Tennessee. Data were also obtained for Cherokee Lake in East Tennessee. Several water quality parameters (temperature, dissolved oxygen, pH, conductivity, and oxidation reduction potential) were analyzed over the length, breadth, and depth of these reservoirs from pre-stratification through post-stratification. The statistical and theoretical three-dimensional analysis showed the expected variation for each water quality parameter in each direction. The influence of the lateral dimension on water quality management and modeling was found to be negligible.  相似文献   

20.
国家重点生态功能区对维护国家和区域生态安全至关重要,产业准入负面清单制度是促进区域国土空间布局优化、引导产业绿色发展的重要举措。本文分别选取了水源涵养、水土保持、防风固沙、生物多样性维护不同类型国家重点生态功能区的案例区,深入开展产业准入负面清单制定的现状分析与问题识别。结果表明:现有产业准入负面清单以限制类为主且多为现有发展产业,禁止类产业较少且多为规划发展产业,在实施过程中仍存在与主体功能定位不符、区域协调性不足、实施困难大、缺乏动态跟踪管理等四方面问题。在此基础上,结合国家有关政策要求和不同区域主导功能定位,提出水源涵养、水土保持、防风固沙、生物多样性维护四类重点生态功能区的通用性和差异性产业准入负面清单优化政策建议,为国家重点生态功能区保护与管理提供决策参考。  相似文献   

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