نتایج جستجو برای: urban basin

تعداد نتایج: 226881  

Journal: :مرتع و آبخیزداری 0
شهرام خلیقی استادیار دانشکدة منابع طبیعی دانشگاه تهران، کرج محمد رستمی خلج دانشجوی دکتری آبخیزداری، دانشکدة منابع طبیعی دانشگاه تهران، کرج محمد مهدوی استاد دانشکدة منابع طبیعی دانشگاه تهران، کرج علی سلاجقه استاد دانشکدة منابع طبیعی دانشگاه تهران، کرج

large impervious surfaces and man-made waterways are the characteristic of urban area. increasing urbanization and rapid growth of cities in recent decades towards the upstream watershed, has been severely affected on rainfall-runoff processes in urban area. therefore, to computer models in order to illustrate these processes the proper design or assessment of urban drainage systems has special...

Journal: :اقتصاد و توسعه کشاورزی 0
صبوحی صبوحی مجرد مجرد

abstract atrak basin is an agricultural area in north khorasan province that the most farmers are using from groundwater resources for irrigation their crops. decreasing rainfall in recent years in this area, competition between urban, agriculture and industrial consumers has increased for water acquisition. in present study, game theory was applied for groundwater resources management of atrak...

2015
Rubens Souza de OLIVEIRA Lanna Jamile Corrêa da COSTA Fernanda Atanaena Gonçalves de ANDRADE Wilson UIEDA Luzia Fátima Alves MARTORELLI Ana Paula de Arruda Geraldes KATAOKA Elizabeth Salbé Travassos da ROSA Pedro Fernando da Costa VASCONCELOS Armando de Souza PEREIRA Antônio Ismael Barros do CARMO Marcus Emanuel Barroncas FERNANDES

The outbreaks of rabies in humans transmitted by Desmodus rotundus in 2004 and 2005, in the northeast of the Brazilian State of Para, eastern Amazon basin, made this a priority area for studies on this zoonosis. Given this, the present study provides data on this phenomenon in an urban context, in order to assess the possible circulation of the classic rabies virus (RABV) among bat species in C...

2007
Seth Wenger Mary Freeman

The Etowah River basin in Georgia, USA, supports nine imperiled fish species that are the object of protection under the proposed Etowah Habitat Conservation Plan (HCP). With urban land cover steadily increasing in the basin at the expense of forest and agricultural land cover, development-related activities and their consequences appear, as a group, to be the major threat to the species. Howev...

2003
Baxter E. Vieux Philip B. Bedient

Radar measurement characteristics have important consequences on the predictability of flood hazards in urban watersheds. Site-specific hydrologic prediction is made possible by highresolution geospatial data and physics-based distributed modeling. Within the urban context, basin response is typically less than one-hour and basin sizes less than several hundred square kilometers. Forecast locat...

2016
Charles Gyamfi Ramadhan W. Salim

Intensified human activities over the past decades have culminated in the prevalence of dire environmental consequences of sediment yield resulting mainly from land use changes. Understanding the role that land use changes play in the dynamics of sediment yield would greatly enhance decision-making processes related to land use and water resources management. In this study, we investigated the ...

Journal: :Journal of environmental quality 2007
Dianna M Hogan Mark R Walbridge

Stormwater management infrastructure is utilized in urban areas to alleviate flooding caused by decreased landscape permeability from increased impervious surface cover (ISC) construction. In this study, we examined two types of stormwater detention basins, SDB-BMPs (stormwater detention basin-best management practice), and SDB-FCs (stormwater detention basin-flood control). Both are constructe...

2008
H. Gonca Coskun Ugur Alganci Gokce Usta

Accurate and timely information about land use and land cover (LULC) and its changes in urban areas are crucial for urban land management decision-making, ecosystem monitoring and urban planning. Also, monitoring and representation of urban sprawl and its effects on the LULC patterns and hydrological processes of an urbanized watershed is an essential part of water resource planning and managem...

Journal: :Environmental science & technology 2014
Rebecca L Hale Laura Turnbull Stevan Earl Nancy Grimm Krystin Riha Greg Michalski Kathleen A Lohse Daniel Childers

Urban watersheds are often sources of nitrogen (N) to downstream systems, contributing to poor water quality. However, it is unknown which components (e.g., land cover and stormwater infrastructure type) of urban watersheds contribute to N export and which may be sites of retention. In this study we investigated which watershed characteristics control N sourcing, biogeochemical processing of ni...

Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2006
J Byrne S Kienzle D Johnson G Duke V Gannon B Selinger J Thomas

Long-term trends in alpine and prairie snow pack accumulation and melt are affecting streamflow within the Oldman River Basin in southern Alberta, Canada. Unchecked rural and urban development also has contributed to changes in water quality, including enhanced microbial populations and increased waterborne pathogen occurrence. In this study we look at changing environment within the Oldman Riv...

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