Abstract:
:Phosphorus (P) losses from nonpoint sources into surface water resources through surface runoff and tile drainage play a significant role in eutrophication. Accordingly, the number of studies involving the modeling of agricultural P losses, the uncertainties of such models, and the best management practices (BMPs) supported by the modeling of hypothetical P loss reduction scenarios has increased significantly around the world. Many improvements have been made to these models: separate manure P pools, variable source areas allowing the determination of critical source areas of P loss, analyses of modeling uncertainties, and understanding of legacy P. However, several elements are still missing or have yet to be sufficiently addressed: the incorporation of preferential flow into models, the modification of P sorption-desorption processes considering recent research data (e.g., pedotransfer functions for labile, active, or stable P, along with P sorption coefficients), BMP parameterization, and scale-up issues, as well as stakeholder-scientist and experimentalist-modeler interactions. The accuracy of P loss modeling can be improved by (a) incorporating dynamic P sorption-desorption processes and new P subroutines for direct P loss from manure, fertilizer, and dung, (b) modeling preferential flow, connectivity between field and adjacent water bodies, and P in-stream processes, (c) including an assessment of model uncertainty, (d) integrating field and watershed models for BMP calibration and scaling field results up to larger areas, and (e) building a holistic interaction between stakeholders, experimentalists, and modelers.
journal_name
J Environ Qualjournal_title
Journal of environmental qualityauthors
Wang Z,Zhang T,Tan CS,Qi Zdoi
10.1002/jeq2.20109subject
Has Abstractpub_date
2020-09-01 00:00:00pages
1203-1224issue
5eissn
0047-2425issn
1537-2537journal_volume
49pub_type
杂志文章,评审abstract::The stabilization of Pb on additions of P to contaminated soils and mine spoil materials has been well documented. It is clear from the literature that different P sources result in different efficacies of Pb stabilization in the same contaminated material. We hypothesized that the differences in the efficacy of Pb st...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2013.07.0281
更新日期:2014-03-01 00:00:00
abstract::Recent strategies to reduce elevated nitrate concentrations employ metallic Fe0 as a reductant. Secondary products of Fe0 corrosion include magnetite (Fe3O4), green rust [Fe6(OH)12SO4], and wüstite [FeO(s)]. To our knowledge, no studies have been reported on the reactivity of NO3- with FeO(s). This project was initiat...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.0459
更新日期:2005-07-05 00:00:00
abstract::Intensively managed golf courses are perceived by the public as possibly adding nutrients to surface waters via surface transport. An experiment was designed to determine the transport of nitrate N and phosphate P from simulated golf course fairways of 'Tifway' bermudagrass [Cynodon dactylon (L.) Pers.]. Fertilizer tr...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2002.1710
更新日期:2002-09-01 00:00:00
abstract::Previous studies have suggested that phenolic acids from legume green manures may contribute to weed control through allelopathy. The objectives of this study were to investigate the oxidation reactions of phenolic acids in soil and to determine the subsequent effects of oxidation upon phytotoxicity. Soils were reacte...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2001.3051631x
更新日期:2001-09-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.1002/jeq2.20029
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abstract::Phosphorus losses from arable soils contribute to eutrophication of freshwater systems. In addition to losses through surface runoff, leaching has lately gained increased attention as an important P transport pathway. Increased P levels in arable soils have highlighted the necessity of establishing a relationship betw...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.6780
更新日期:2004-03-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2007.0214
更新日期:2008-05-02 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2016.05.0173
更新日期:2016-11-01 00:00:00
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pub_type: 杂志文章
doi:10.2134/jeq2017.02.0047
更新日期:2017-07-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2005.0430
更新日期:2007-01-09 00:00:00
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pub_type: 杂志文章
doi:10.2134/jeq2014.07.0315
更新日期:2015-07-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2018.05.0216
更新日期:2019-03-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章,评审
doi:10.2134/jeq2001.302303x
更新日期:2001-03-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2009.0449
更新日期:2010-09-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2001.302584x
更新日期:2001-03-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:
更新日期:2005-01-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2009.0083
更新日期:2009-12-30 00:00:00
abstract::Iodine (I) is an essential trace element commonly deficient in agricultural systems. Whereas there is much information on I in food crops, there is a lacuna of knowledge on the environmental factors that affect pasture I concentrations. We aimed to identify the most important environmental factors affecting the concen...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2019.03.0128
更新日期:2019-09-01 00:00:00
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pub_type: 杂志文章
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journal_title:Journal of environmental quality
pub_type: 杂志文章
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更新日期:2010-04-13 00:00:00
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pub_type: 杂志文章
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更新日期:2010-07-01 00:00:00
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journal_title:Journal of environmental quality
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journal_title:Journal of environmental quality
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更新日期:2006-01-03 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:2004-11-01 00:00:00
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pub_type: 杂志文章,评审
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更新日期:2003-03-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2005.0282
更新日期:2006-04-03 00:00:00