نتایج جستجو برای: river management

تعداد نتایج: 927015  

Journal: :ecopersia 0
rezvan alijani former m.sc. student, department of watershed management engineering, faculty of natural resources, tarbiat modares university, iran mehdi vafakhah associate professor, department of watershed management engineering, faculty of natural resources, tarbiat modares university, iran arash malekian assistant professor, department of rehabilitation of arid and mountainous regions, faculty of natural resources, university of tehran, karaj, iran

drought is a complex natural phenomenon that can occur in any climate. hydrologic drought in the river flow of arid and semi-arid areas causes serious shortages, threatens the quality of life, and impacts on the economy. understanding this feature is then essential for the management of water resources. hydrologic drought in the sense of deficient river flow is defined as the periods that river...

2012
Rhythm Aggarwal Shakti Arora

Water is a valued natural resource for the existence of all living organisms. Indian rivers are polluted due to the discharge of untreated sewage and industrial effluents. Management of the quality of this precious resource is, therefore, of special importance. In this study river water samples were collected and analysed for physicochemical and bacteriological evaluation of pollution of Kausha...

Precisely management of water quality in urban rivers is of significant and water environmental capacity provide a useful tool. This study presented a water quality analysis simulation program model-based approach for dynamical load reduction in Ashi River, highly contaminated tributaries of Songhua River, China. The actual and surplus dynamic environmental capacity of CODCr and NH<s...

Journal: :Journal of the Korean Association of Geographic Information Studies 2012

حجه فروش نیا, شیلا, صفاری, امیر, کرم, امیر,

With the development of economy and social services, increased need to reduce risks, control risks and other important measures in order to provide program management and follow-up plans vulnerability, Having the right information and understanding the current situation in the field is essential for &nbsp;prevention and planning measures, Therefore, research on risk reduction and knowledge of t...

2013
Nattapong Kaewboonma Kulthida Tuamsuk Wanida Kanarkard Marut Buranarach

This paper describes the research project on the development of an ontology-based semantic search system for drought management of the Chi River Basin (CRB), Thailand. The research methods included Ontology Development 101 by adopting Noy & McGuinness (2001) and Ontology-based Application Management framework by adopting Buranarach et al. (2012). Seventeen experts including ten experts in the a...

2012
Steven Broekx Erika Meynaerts Leo De Nocker Ingeborg Joris Nele Smeets Piet Seuntjens

The Water Framework Directive (WFD) requires Member States to ensure that all waters meet ‘good status’ and to publish river basin management plans that include programs of cost-effective measures. VITO supported the policy makers in Flanders (Belgium) with the preparation of the first generation of river basin management plans and more specifically with the assessment of the costs and effects ...

Journal: :تحقیقات جغرافیایی 0
صفر معروفی حسین طبری

evaluation of river discharges trends is very important for water resources management and design of irrigation and drainage networks. in this research, annual, seasonal and monthly trends of maroon river discharge were evaluated using the mann-kendall and sen’s slope estimator non-parametric tests and the regression analysis parametric test. for this purpose, river discharge data from five h...

Journal: :آب و خاک 0
علی داننده مهر محمدرضا مجدزاده طباطبائی

abstract accurate prediction of river flow is one of the most important factors in surface water recourses management especially during floods and drought periods. in fact deriving a proper method for flow forecasting is an important challenge in water resources management and engineering. although, during recent decades, some black box models based on artificial neural networks (ann), have bee...

Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2005
F Rosillon P Vander Borght H Bado Sama

Inspired by the experience of a river contract in Wallonia (Belgium) since 1990, the implementation of a first river contract has been initiated in a West African country, Burkina Faso. This application is not limited to a simple transposition of the Walloon model. The Burkina context calls for adaptation to the local environmental and socio-economical realities with an adequate partnership man...

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