نتایج جستجو برای: point source pollution
تعداد نتایج: 973664 فیلتر نتایج به سال:
Water is an important natural element of our environment, and its management security are also serious concerns. Agricultural non-point source pollution (NPSP) one the major sources contaminants causing water quality degradation. A riparian buffer zone a vegetative cover adjacent to channels that positively contributes pollutant filtration sediment trapping. It has potential filter nutrients, r...
This paper uses CiteSpace to visualize and analyze the literature related agricultural non-point source pollution in China Knowledge Network (CNKI) from 1993~2022. The results showed that research on has gone through three stages: beginning (1993~2006), booming development (2007~2011), stable (2011-2022). focuses mainly pollution, control, model simulation. Agricultural always played a leading ...
Environmental studies of motor vehicles typically focus on air pollution or noise, but ignore water pollution. In this paper, we examine some of the impacts of motor vehicle transportation on non-point source and on groundwater pollution. Our estimates of the present value of costs for cleaning up leaking underground storage tanks and for controlling highway runoff for major arterials range fro...
Due to the important role of non-point source pollution in water resources management, in this study time series modeling was applied to forecast water quality parameters and L-THIA model (one type of non-point source pollution models) was applied to estimate water pollutants. The purpose of this study was to compare results of L-THIA model and ARIMA models in Namrood sub-basin located in ...
This paper presents an inverse modelling procedure to estimate the location and release rate of atmospheric pollution. The input to this model requires measured pollution concentration at a minimum of three observation sites on the ground and meteorological conditions such as wind speed and cloud cover. The inverse model is formulated as a least squares minimisation problem coupled with the sol...
A procedure for assessing harbour pollution by heavy metals and PAH and the possible sources of contamination is proposed. The procedure is based on a ratio-matching method applied to the results of principal component analysis (PCA), and it allows discrimination between point and nonpoint sources. The approach can be adopted when many sources of pollution can contribute in a very narrow coasta...
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