نتایج جستجو برای: river basins

تعداد نتایج: 92307  

2005
CHEN Junfeng LI Xiubin ZHANG Ming

Impacts of land cover changes on watershed hydrology have been a long-term academic concern with acute dispute. But little attention has been paid to such effects on mesoscale river basins, where the society has a closer link to river hydrology. The present study focuses on a mesoscale river basin, the Suomo Basin that is located on the upper reaches of the Yangtze River. Land covers in the bas...

2012
M. T. H. van Vliet J. R. Yearsley W. H. P. Franssen

Realistic estimates of daily streamflow and water temperature are required for effective management of water resources (e.g. for electricity and drinking water production) and freshwater ecosystems. Although hydrological and process-based water temperature modelling approaches have been successfully applied to small catchments and short time periods, much less work has been done at large spatia...

2011
Vimoksalehi Lukoschek Jennifer L Osterhage Daryl R Karns John C Murphy Harold K Voris

During the Cenozoic, Southeast Asia was profoundly affected by plate tectonic events, dynamic river systems, fluctuating sea levels, shifting coastlines, and climatic variation, which have influenced the ecological and evolutionary trajectories of the Southeast Asian flora and fauna. We examined the role of these paleogeographic factors on shaping phylogeographic patterns focusing on a species ...

2015
A. Tilmant G. Marques Y. Mohamed

Many river basins throughout the world are increasingly under pressure as water demands keep rising due to population growth, industrialization, urbanization and rising living standards. In the past, the typical answer to meet those demands focused on the supply side and involved the construction of hydraulic infrastructures to capture more water from surface water bodies and from aquifers. As ...

Journal: :Current Biology 2001
N Williams

River dolphins are some of the world's least-known and endangered species of mammals. Although better-known marine dolphins are found in estuaries, river dolphins represent four distinct genera each inhabiting different river basins such as the Amazon, Ganges, Indus and Yangtze. But their relationship to each other and other cetaceans has been puzzling and disputed. One of the key problems is t...

Journal: :Global change biology 2016
Monica B Emelko Micheal Stone Uldis Silins Don Allin Adrian L Collins Chris H S Williams Amanda M Martens Kevin D Bladon

Global increases in the occurrence of large, severe wildfires in forested watersheds threaten drinking water supplies and aquatic ecology. Wildfire effects on water quality, particularly nutrient levels and forms, can be significant. The longevity and downstream propagation of these effects as well as the geochemical mechanisms regulating them remain largely undocumented at larger river basin s...

2016
L. C. Crossey

2016 desert symposium e Bouse Formation provides a sedimentary record of the rst arrival of the Colorado River, water and sediment, as it was integrated from the Colorado Plateau to the Gulf of California 5–6 Ma. is unit is generally thin (10–100s m) but widespread within basins in the lower Colorado River corridor that extend from Lake Mead to Yuma (Fig. 1). e basins are interpreted to have be...

Journal: :Environmental Modelling & Software 2008

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