of or pertaining to a source of pollution that is not readily and specifically identifiable, as water runoff
Word origin
[non- + point]
Examples of 'nonpoint' in a sentence
nonpoint
Hydrological models are essential tools for water resource and nonpoint source pollution management.
Netnapa Pongpetch, Pongthep Suwanwaree , Chatpet Yossapol , Songkot Dasananda, ThongplewKongjun 2015, 'Using SWAT to Assess the Critical Areas and Nonpoint Source Pollution Reduction BestManagement Practices in Lam Takong River Basin, Thailand', EnvironmentAsiahttp://www.tshe.org/ea/pdf/vol8no1-06.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Only large decreases in nonpoint nutrient sources will limit phytoplankton biomass reliably.
Alan D. Jassby 2005, 'Phytoplankton Regulation in a Eutrophic Tidal River (San Joaquin River, California)',San Francisco Estuary and Watershed Sciencehttp://escholarship.org/uc/item/9jb2t96d. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The ansätze are constructed by using operators of nonpoint classical and conditional symmetry.
Ivan Tsyfra, Tomasz Czyżycki 2015, 'Nonpoint Symmetry and Reduction of Nonlinear Evolution and Wave Type Equations', Abstract and Applied Analysishttp://dx.doi.org/10.1155/2015/181275. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Modern agriculture often leads to nonpoint source pollution.
Qingshan Yang, Jie Liu, Yu Zhang 2017, 'Decoupling Agricultural Nonpoint Source Pollution from Crop Production: A Case Studyof Heilongjiang Land Reclamation Area, China', Sustainabilityhttp://www.mdpi.com/2071-1050/9/6/1024. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Pollutants deposited on road surfaces and distributed in the environment are a source of nonpoint pollution.
Jen-Yang Lin, Yunn-Jinn Wang, Chi-Feng Chen 2013, 'The Measurement of Dry Deposition and Surface Runoff to Quantify Urban Road Pollutionin Taipei, Taiwan', International Journal of Environmental Research and Public Healthhttp://www.mdpi.com/1660-4601/10/10/5130. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Economic instruments such as input and emission taxes could be only ancillary measures to address nonpoint pollution problems.
Mohamed Taher Kahil, José Albiac 2013, 'Greenhouse gases mitigation policies in the agriculture of Aragon, Spain', Bio-based and Applied Economicshttp://www.fupress.net/index.php/bae/article/view/10885. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The simulated results indicated that increasing nonpoint sources at the upstream reaches degraded the dissolved oxygen under low flow conditions.
Wen-Cheng Liu, Wen-Ting Chan 2014, 'Assessing the Influence of Nonpoint Source and Discharge Changes on Water Qualityin a Tidal River Estuary Using a Three-Dimensional Model', Environmentshttp://www.mdpi.com/2076-3298/1/2/157. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
First, the template matching method was used to effectively reduce nonpoint source target image pixels in the satellite imagery.
Kai Li, Yongsheng Zhang, Zhenchao Zhang, Ying Yu 2018, 'An Automatic Recognition and Positioning Method for Point Source Targets on SatelliteImages', ISPRS International Journal of Geo-Informationhttps://www.mdpi.com/2220-9964/7/11/434. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
This paper aims at contributing to the understanding of the water quality problem related to nonpoint pollution sources.
Diego Magalhães Borges Santanna, Antonio Sérgio Ferreira Mendonça 2012, 'Estimation of nonpoint pollution loads in watersheds with emphasis on the loads generatedfor the parameter phosphorus', Boletim do Observatório Ambiental Alberto Ribeiro Lamegohttp://www.essentiaeditora.iff.edu.br/index.php/boletim/article/view/2457. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)