بانک جهانی روز یکشنبه اعلام کرد دولتهای کشورهای خاورمیانه و شمال آفریقا باید بهبود مصرف منابع آب خود را تسریع کنند و هشدار داد که آب در دسترس برای هر فرد در این ناحیه تا سال ۲۰۵۰به نصف میزان فعلی آن کاهش خواهد یافت.
به گزارش ایرنا به نقل از خبرگزاری رویترز، در گزارش جدید بانک جهانی اعلام شدهاست که برخی کشورهای منطقه از هماکنون با بحران آب مواجه شدهاند که این وضعیت در صورت عدم اجرا شدن اصلاحات اساسی، وخیمتر خواهد شد.
در این گزارش ذکر شدهاست که شهرهای منطقه در آینده برای تامین آب آشامیدنی خود بیشتر و بیشتر به فرایند پر هزینه نمک زدایی آب دریا وابسته خواهند شد و در دوران خشکسالی به میزان بیشتری به تامین اضطراری آب با کمک تانکرها وابسته خواهند بود.
شمال آفریقا و خاورمیانه هماکنون یکی از فقیرترین نقاط جهان از لحاظ برخورداری از منابع آب است و استفاده از منابع تجدیدشدنی آب در این منطقه از تمامی نقاط دیگر جهان بیشتر است.
در گزارش بانک جهانی اعلام شدهاست که کمبود آب تاثیر کوتاه مدت و نیز بلند مدت بر رشد اقتصادی و میزان فقر موجود در ناحیه خواهد داشت و سبب تشدید درگیریهای اجتماعی درون و مابین جوامع خواهد شد و فشار بیشتری را نیز بر بودجههای عمومی کشورهای منطقه وارد خواهد کرد.
هماکنون یک نفر از هر سه نفر در جهان در نقاط کم آب زندگی میکنند.
در آفریقای شمالی و خاورمیانه، رهبران کشورها بارها هشدار دادهاند کمبود آب مرتبط با افزایش جمعیت و نیز تغییرات آب و هوایی میتواند در آینده مشکلات زیادی را بوجود آورد.
"جولیا باکنال" کارشناس منابع بانک جهانی اعلام کرد همه این موارد نشان میدهند منطقه خاورمیانه و آفریقای شمالی در آینده مجبور میشود از منابع آب محدودتر، برداشت بیشتری داشته باشد.
بانک جهانی در گزارش خود مجموعهای از تغییرات فنی و سیاسی را برای مصرف منابع آب در این منطقه پیشنهاد کردهاست که از جمله آنها میتوان به کاهش نشتیهای آب، اصلاح زیرساختهای فاضلاب و نیز اصلاح آبیاری کشاورزی اشاره کرد. به گفته بانک جهانی، تامینکنندگان آب در کشورهای این منطقه باید از لحاظ اقتصادی از دولتها مستقل باشند و قوانین محیط زیستی جدید باید در کشورهای منطقه اعمال شوند.
در گزارش بانک جهانی عنوان شدهاست که افزایش تجارت محصولات کشاورزی، اصلاحات در بانکداری و خدمات بیمه و توسعه مخابرات و اینترنت میتواند نقش مهمی در بهبود مصرف منابع آبی داشته باشند. بانک جهانی همچنین اعلام کردهاست که دولتهای منطقه و سازمانهای مرتبط با تامین آب باید در قبال اقدامات خود جوابگویی بیشتری داشته باشند.
به گفته کارشناسان بانک جهانی، وجود شفافیت در اقدامات سبب میشود شهروندان دلایل تصمیمات دولتها را درک کنند و نتایج واقعی این تصمیمات را نیز مشاهده و نقد کنند.
به همت استاد محترم٬ آقای دکتر کیهان فرد ٬ لوح فشرده کنفرانس بین المللی مدیریت منابع آب در کشورهای اسلامی در اختیار اینجانب قرار گرفت. این لوح فشرده علاوه بر گزارش کنفرانس و برنامه های آن٬ حاوی دهها مقاله ارائه شده در آن کنفرانس است. عزیزانی که به این فایل ها جهت مطالعه نیاز داشته باشند٬ می توانند آدرس پست الکترونیک خود را در قسمت نظرات ذکر کنند و یا نامه ای بنویسند تا برایشان ارسال کنم.
زبان کنفرانس انگلیسی بوده است. برای نمونه یکی از مقالات ارائه شده در این کنفرانس تقدیم می شود:
Overview of challenges and strategies of water resources management in Islamic countries
Keynote presentation for the International Conference on "Water Resources Management in the Islamic Countries", 19-20 February, 2007,
Murad Bino[1], muradinw@nic.net.jo
Fresh water per capita availability is decreasing and quality is deteriorating in most Middle Eastern countries. Water scarcity problems have always remained an issue of concern to the governments in Islamic countries. Some argue that water shortages in the
Water demand management (WDM) is an important water resources management tool that can help many Muslim countries over come water shortages. Many countries in the region are now aware of the potential of WDM and started to implement strategies and policies that lead to reducing demand on water.
In the
The water problems have always remained an issue of concern to the governments in Islamic countries. However, such factors as population growth, an increasing demand for water, climatic factors, along with its correlation with other critical factors like poverty, food and nutrition, health and its impact on improving the socio-economic conditions, have called for drawing the attention of the highest authorities to take these issues more seriously[v]. Some argue that water shortages in the
High population growth rate in Islamic countries is considered a root cause for lack of steady and stable economic progress, lack of proper infra structure and suitable medical and education services and leads to water insecurity. Some countries like
As a result of the mismatch of demand and sustainable water supply of suitable quality in many areas of the
There are multiple water resource management strategies that may be implemented to help meet the challenges of the future water demands with diverse types of actions. These possible actions depend on the local hydrology, geography, economics and politics, including conjunctive use, groundwater replenishment, additional surface storage, urban water use efficiency, agriculture water use efficiency, water recycling, desalination, and precipitation enhancement. By making the right choices, diversifying the water options, and making the right investment, a region may be able to meet its future water challenges and demands. The process of identifying and facing the challenges and finding solutions is complex and involves not only assessing water demand patterns and water supply availability, but also water policies, management, institutions, and require broad stakeholder involvement and buy-in to be successful at the end of the day[viii].
Natural and man-made causes of water shortages must be addressed in order to enhance and safeguard the water supplies for sustainable development. Firstly, water management practices must be improved and then water supplies have to be augmented to overcome the natural shortages. Before embarking on development of costly additional water sources, the demands on water must be challenged and manipulated in a serious attempt to match them with existing resources. The demand management approach addresses the non-structural causes of water shortages and places the following three groups of functions at the heart of integrated water management policies and establishes them as main stream operational strategies:
Developing country economies are mainly agriculture based and with low productivity. Contribution of agriculture in national gross domestic product is low (5-10 % on the average), while agriculture consumes on the average more than 75% of all fresh water. Many countries borrowed from the World Bank or other lending sources to build dams and irrigation systems. The process was necessary at the beginning to maintain food production and employment of labor force, but long term consequences are that these economies are not able to pay back the loans and interests accumulate and results in economic difficulties. There was no account for recovering cost of irrigation services and water is provided free of charge.
Recent trends in water resources management indicate that water is increasingly recognized as: a valuable resource for the health and well-being of the society and its sustainable development; a finite resource which must be used efficiently and wisely; a renewable resource which must be kept clean and its quality protected; and a shared resource which must meet the needs of competing current users (humans and non-humans) and future generations. Many countries have tapped all their accessible and known resources beyond their virtual capacity. Desalinating sea water for additional water supplies is achievable, but remains costly and within the near future, it will not be affordable to most Middle Eastern countries unless significant cost reductions are achieved. Before embarking on development of costly additional water sources, a new approach to water resources management in the region is needed. Each nation’s water resources must be protected, conserved, developed, managed, used, and controlled in ways which ensure efficient, sustainable and beneficial use of water in the public interest. Water must be used efficiently to reduce the consumptive use of water and wastewater flows.
The demand management approach stipulates that new water sources and additional supply facilities will not be developed until after exhausting all available opportunities for reducing the demand on water to match the existing supplies. The Demand management approach addresses the non-structural causes of water shortages and places the following three groups of functions at the heart of integrated water management policies and establishes them as main stream operational strategies.
The demand management approach, successfully tried in may countries worldwide and in Middle Eastern such as in
In
Irrigation usually consumes the largest share of fresh water resources all over the world. There are important differences between developed and developing countries as to the share of irrigation to other uses such as domestic and industrial. A recent study conducted by the German Technical Development Agency[ix] (GTZ) showed that agriculture is the largest consumer of water, consuming an average of 75% in the nine Middle Eastern countries. Municipal water uses consume on average 22%, the rest is shared by industrial and tourism uses. The total water consumption in
One of the reasons why farmers use water inefficiently is due to irrigation system constraints, use of traditional irrigation systems, lack of funds for maintenance, and unaccountability for amounts of water being used in irrigation. If cost recovery of operation and maintenance services are properly implemented, increased awareness is realized, and low water-consumption irrigation systems are used, water use efficiency will, undoubtedly, increase.
Water scarcity in our region is reason to think of better ways to manage what we have more efficiently and equitably. Dr. Munther Haddadin, a Jordanian expert on water resources and cabinet minister of water says in his recent book[x] that we can better manage green water to increase agriculture production from rain fed agriculture. He suggests that significant amount of rain could be recovered as green water when farmers are helped to plant their fields at the right time in winter.
In the water stressed countries of
Wastewater (treated or partially treated) is an important and reliable water source in many regions of the world, and that the nutrients present in wastewater may replace fertilizers saving money to farmers. Big cities in the region are now provided with sewerage services and collected wastewater is treated and reused to some extent. Because cities keep expanding all the time, it means that collected wastewater from urban centers is a secure and reliable water source. There is, however, a lack of investing capacity worldwide for the construction and operation of adequate treatment facilities which threatens the quality of surface waters, soils and groundwater to which wastewater is discharged. At the same time, the water demand increases rapidly in urban and peri-urban areas, for the production of food as well as to provide income to a large group of city-dwellers and small farmers. These two trends cause an increasing use of partially treated and untreated wastewater in irrigated agriculture in and downstream of urban centers. In most Middle Eastern countries, the rates of wastewater reuse are still very low compared to generation, even in pioneer countries like
A coherent national policy for wastewater use in agriculture is essential. This must define the division of responsibilities among involved ministries and authorities and non-government organization and/or individual users. Realistic standards for treated wastewater must be adopted to safe-guard public health and protect against adverse environmental impacts. Provision should be made to adequately staff and provide financial resources to organization charged with the responsibility for assessing, implementing, operating and monitoring effluent use schemes and enforcing compliance with reg
[1] Executive Director of the Inter-Islamic Network on Water Resource Development and Management (INWRDAM),
[i]
[iv] Falkenmark, M., and Lindh, G. (1974), "How Can We Cope with Water resources Situation by 2050?" Ambro 3 (3-4), pp 114-22.
[v] Islamic Education, Scientific and Cultural Organization report for Global Environment Outlook 2000.
[vi] Green water is the rainfall that does not make it into rivers or aquifers, but is stored directly in the soil as "soil moister"
[vii] Bakir, H, A. "Water Demand Management for Enhancing Water Supply Security: Concept, Applications and Innovations". International Water Demand Management Conference, May 30-
[viii] Basil Rashid, and Nouman Rashid, Shlumberger Water Services, "Integrated solutions combing technology with expertise", Arab Water World, Vol. XXX, December 2006
[ix] Magiera, P., "Water Demand Management in the Middle East and North Africa", German Technical Cooperation, c/o GTZ office Amman, International Water Demand Management Conference, May 30- June 3, 2004, Dead Sea, Jordan.
[x] Haddadin, Munther, "Water Resource in
طبق مطالعه جدید موسسه "تحقیقات انرژی نوظهور" ( (EERانتظار میرود که توان انرژی بادی کانادا تا سال ۲۰۱۵به ۱۴هزار ۱۰۰مگاوات افزایش یابد.
بنا به نوشته ایرنا٬ خبرگزاری یونایتدپرس از اوتاوا به نقل از این شرکت مشاورهای مستقر در ماساچوست آمریکا گزارش داد توان انرژی بادی کانادا در سال ۲۰۰۶بیش از دو برابر شده و به یک هزار و ۴۶۸مگاوات رسیده است.
"جاشوا مگی" تحلیلگر ارشد EERگفت: در دو سال گذشته بازار انرژی بادی کانادا از ابهام نسبی بیرون آمده و به یکی از بزرگترین و سریعترین بازارهای انرژی بادی در جهان تبدیل شده است.
انتظار میرود در فاصله زمانی سالهای ۲۰۰۷و ۲۰۱۵سرمایهگذاری های بزرگی در زمینه انرژی بادی انجام شود و کانادا در ردیف پنجم یا ششم بازار بزرگ انرژی بادی در جهان قرار گیرد.
کانادا در سال ۷۸۴ ،۲۰۰۶مگاوات به انرژی بادی خود افزود و در سراسر سال ۲۰۱۵دست کم در یک چهارم رشد سالانه آمریکای شمالی مشارکت خواهد داشت.
در حالیکه تا پایان سال ،۲۰۰۶انرژی بادی تنها ۰/۷درصد از انرژی کانادا را تولید میکند، انتظار میرود که در ۱۰سال آینده سهم منبع سوخت تجدید پذیر در تامین برق کانادا بطور قابل ملاحظهای افزایش یابد و تا سال ۲۰۱۵به متوسط ۵/۵درصد در تمام استانها برسد.