نتایج جستجو برای: great karun river basin

تعداد نتایج: 344230  

2008
Huiming Liu Fengmin Li Guojun Sun Yu Yang

Based on the combined use of satellite remote sensing and geographical information systems(GIS), as well as field investigation, the land-use change dynamics and the interaction between these changes are analyzed in the Zuli River Basin located in semi-arid Loess Plateau China during the period of 1987-2005, which with typical farming-pastoral region feature of northern China. The land-use chan...

2005
L. R. Welp J. T. Randerson J. C. Finlay S. P. Davydov G. M. Zimova A. I. Davydova S. A. Zimov

[1] Intensification of the Arctic hydrologic cycle and permafrost melt is expected as concentrations of atmospheric greenhouse gases increase. Quantifying hydrologic cycle change is difficult in remote northern regions; however, monitoring the stable isotopic composition of water runoff from Arctic rivers provides a means to investigate integrated basin-scale changes. We measured river water an...

2006
A. M. Sarmiento J. M. Nieto M. Olías Aguasanta M. Sarmiento José Miguel Nieto

The Iberian Pyrite Belt (IPB) is one of the most famous sulfide mining regions in the world. Mining activity in the IPB dates back to prehistoric times, and though today there is no active mining, the pollution continues to generate. The result is acidic drainage containing elevated concentration of sulfate and heavy metals. This is responsible for the pollution and degradation of the Odiel Riv...

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...

2015
DAVID M. MARTIN JOHN W. LABADIE

1. River management involves satisfying societal preferences alongside environmental needs for a healthy river ecosystem. Environmental flows is a discipline that aims to define streamflow requirements that achieve desired social and ecological conditions in rivers. 2. The ecological limits of hydrologic alteration (ELOHA) framework takes a regional approach towards assessing relationships betw...

H. Mousavi-Sabet I. Doadrio S. Vatandoust

The genus Alburnoides Jeitteles, 1861 in Iran is reviewed, and diagnoses are presented for all eight recognized species. Alburnoides eichwaldii, A. holciki, A. idignensis, A. namaki, A. nicolausi, A. petrubanarescui, A. qanati and A. tabarestanensis are considered valid and three new species are described: Alburnoides coadi sp. n., from Namrud River in Kavir basin, A. parhami sp. n., from Atrak...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2013
F G Becker L C C De Fries J Ferrer V A Bertaco K D G Luz-Agostinho J F P Silva A R Cardoso Z M S Lucena C A S Lucena

The aquatic habitats of the Taquari-Antas river basin (in the Patos Lagoon basin, southern Brazil) are under marked environmental transformation because of river damming for hydropower production. In order to provide an information baseline on the fish fauna of the Taquari-Antas basin, we provide a comprehensive survey of fish species based on primary and secondary data. We found 5,299 valid re...

Journal: :J. Geographic Information System 2010
P. P. Nikhil Raj P. A. Azeez

A study of the spatial and temporal changes in land use and land cover (LULC) was conducted using Remote Sensing and GIS. We analyzed the LULC of Bharathapuzha river basin, south India using multispectral LANDSAT imageries of 1973-2005 time periods. 31% depletion in the natural vegetation cover and 8.7% depletion in wetland agriculture area were seen in the basin during the period. On the other...

2003
Jackson Roehrig

Many countries are adopting water policies and legislative instruments for water management in conformance to the agenda 21. According to this agenda, the use and protection of surface water and groundwater are coordinated at a river basin level. The success of river basin management systems relies upon coordinated actions, including provision of and access to information as well as the capabil...

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