نتایج جستجو برای: runoff modeling

تعداد نتایج: 402600  

Journal: :Journal of Korea Water Resources Association 2004

Journal: :Indian Journal of Science and Technology 2012

Journal: :Environmental toxicology and chemistry 2005
Dimitrios Georgios Karpouzas Aldo Ferrero Francesco Vidotto Ettore Capri

No validated models in Europe are capable of simulating the environmental fate of pesticides under the specific conditions of rice fields. Rice water quality--vadose zone flow and transport (RICEWQ-VADOFT) is a model developed from the coupling of a surface runoff model (RICEWQ) and a vadose zone flow and transport model (VADOFT) for determining predicted environmental concentrations in paddy w...

2010
Jesse Eugene Bell Ensheng Weng Yiqi Luo

[1] Relative impacts of multiple global change factors on ecohydrological processes in terrestrial ecosystems have not been carefully studied. In this study, we used a terrestrial ecosystem (TECO) model to examine effects of three global change factors (i.e., climate warming, elevated CO2, and altered precipitation) individually and in combination on runoff, evaporation, transpiration, rooting ...

2005

Carbon sequestration programs, including afforestation and reforestation, are gaining attention globally and will alter many ecosystem processes, including water yield. Some previous analyses have addressed deforestation and water yield, while the effects of afforestation on water yield have been considered for some regions. However, to our knowledge no systematic global analysis of the effects...

2009
John S. Jacob Ricardo Lopez Kenneth W. Potter

Jacob and Lopez (2009) presents modeling results to support the conclusion that the per capita water quality impacts of urban development decrease significantly with population density. If true, this conclusion would have important implications for land use planning throughout the world. However, as discussed below, the modeling is based on questionable assumptions that likely bias the conclusi...

2013
Adam Piotrowski

A comparison of methods to avoid overfitting in neural networks training in the case of catchment runoff modeling. evolutionary computation techniques for noise injected neural network training to estimate longitudinal dispersion coefficients in rivers. Expert Systems with Applications 39, 1354-1361.

Journal: :فیزیک زمین و فضا 0
مژگان یعقوبی گروه علوم و مهندسی آب، پردیس ابوریحان، دانشگاه تهران علیرضا مساح بوانی پردیس ابوریحان، دانشگاه تهران

arid and semi-arid regions of the world are confronted with limited water resources. a large part of iran is arid and semi-arid and rainfall in arid and semi-arid regions is typically meager, irregular and highly variable. this irregularity affects the hydrological cycle and water resources. investigating the hydrology of the arid and semi arid regions is essential to know this environment and ...

2008

Interactive effects of multiple global change factors on ecosystem processes are complex. It is relatively expensive to explore those interactions in manipulative experiments. We conducted a modeling analysis to identify potentially important interactions and to stimulate hypothesis formulation for experimental research. Four models were used to quantify interactive effects of climate warming (...

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