Results 261 to 270 of about 17,349,625 (306)

Modeling the non-point source pollution risks by combing pollutant sources, precipitation, and landscape structure

Environmental Science and Pollution Research, 2019
Traditional models of nutrient simulation usually focus on the pollutant sources and precipitation, lacking the quantification of landscape structure. We developed a new prediction model of pollution risks by combing pollutant sources, precipitation, and landscape structure, which was defined as the source-precipitation-landscape model (SPLM). The SPLM
Xian Cheng, Liding Chen, Ranhao Sun
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Legacy pollution and our struggle to control non-point source pollution

Open Access Government, 2023
Legacy pollution and our struggle to control non-profit source pollution Changes to the natural landscape are pervasive. The construction of dams, alterations to river water courses, flood controls, farming, urbanization and deforestation all contribute to the current condition of our water resources.
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Characteristics of Urban Non-Point Source Pollution in Suzhou City

2009 International Conference on Environmental Science and Information Application Technology, 2009
Urban non-point source (NPS) pollution of Suzhou City in different land use was investigated from Nov. 2006 to Sep. 2008. The results show that pollutants concentrations were very variable and dispersed for different sampling sites. The median values of Event Mean Concentrations (EMC) of COD, SS, NH3-N, TN and TP were 119-225, 93-188, 2.30-11.77, 6.35 ...
Yongjing Tian, Tian Li, Shaoming He, Aicheng Zhong, Dan Zhao   +4 more
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Simulating the evolution of non-point source pollutants in a shallow water environment

Chemosphere, 2007
Non-point source pollution originating from surface applied chemicals in either liquid or solid form as part of agricultural activities, appears in the surface runoff caused by rainfall. The infiltration and transport of these pollutants has a significant impact on subsurface and riverine water quality.
Min, Yan, Rene, Kahawita
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Research Framework on Agricultural Non-Point Source Pollution

Advanced Materials Research, 2014
Agricultural non-point source pollution has become the resources problems, because of its direct linkage with regional food security and ecological safety. In this article, Research Paradigm of agricultural non point source pollution was introduced, including the agricultural non point source pollution theory, research methods, management tools and ...
Cai Lian Hao, Wei Hua Xiao, Da Wei He, Min Shi, Xiao Fei Dang   +4 more
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[A study on non-point source pollution models].

Huan jing ke xue= Huanjing kexue, 2002
With the effective control of industrial wastewater, pollution of non-point sources has become increasingly important in China. The understanding of non-point source pollution processes, mostly through mathematical models, is thus a prior knowledge to its effective control.
Xuetao, Hu, Jining, Chen, Tianzhu, Zhang
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[A review on non-point source pollution models].

Ying yong sheng tai xue bao = The journal of applied ecology, 2008
With the effective control of point source pollution, the non-point source pollution (NPSP) of water environment has been paid more and more attention, and NPSP models are thriving with the development of 3S technology. This paper made a brief introduction about the classification and evolution of NPSP models.
Qiu-Ling, Zhang, Ying-Xu, Chen, Qiao-Gang, Yu, Hua, Deng, Ping, Tian   +4 more
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Statewide Non-Point-Source Pollution Assessment Methodology

Journal of Water Resources Planning and Management, 2000
We present a new methodology for performing Virginia’s statewide, watershed-level non-point-source pollution assessment. The problems and inconsistencies inherent in previous methodologies were addressed and improved upon. The revised methodology utilizes geographic information systems technology, a database management system, and computer modeling ...
W. Cully Hession, Maeve McBride, Mark Bennett   +2 more
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How to regulate non point source pollution ?

2008
Les pollutions diffuses sont des pollutions ne pouvant être attribuées à un émetteur bien défini. Elles sont en conséquence difficiles à maitriser, et appellent des actions règlementaires mais aussi la conception d'outils collectifs innovants aidant à un changement de mentalité.
Rio, Patrick, Thoyer, Sophie
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Collective liability in non-point source pollution

2011
Non point source pollution is characterized by the fact that individual emissions are not observable at a reasonable cost. This constitutes a moral hazard problem. Furthermore, we explicitly consider adverse selection, a second type of asymmetric information that arises because of the difficulty to differentiate the polluters with respect to their type
Ali, Mourad, Rio, Patrick
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