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Nitrate-Nitrogen Leaching and Modeling in Intensive Agriculture Farmland in China

Protecting water resources from nitrate-nitrogen (NO(3)-N) contamination is an important public health concern and a major national environmental issue in China. Loss of NO(3)-N in soils due to leaching is not only one of the most important problems in agriculture farming, but is also the main facto...

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Autores principales: Xu, Ligang, Niu, Hailin, Xu, Jin, Wang, Xiaolong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3745986/
https://www.ncbi.nlm.nih.gov/pubmed/23983629
http://dx.doi.org/10.1155/2013/353086
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author Xu, Ligang
Niu, Hailin
Xu, Jin
Wang, Xiaolong
author_facet Xu, Ligang
Niu, Hailin
Xu, Jin
Wang, Xiaolong
author_sort Xu, Ligang
collection PubMed
description Protecting water resources from nitrate-nitrogen (NO(3)-N) contamination is an important public health concern and a major national environmental issue in China. Loss of NO(3)-N in soils due to leaching is not only one of the most important problems in agriculture farming, but is also the main factor causing nitrogen pollution in aquatic environments. Three typical intensive agriculture farmlands in Jiangyin City in China are selected as a case study for NO(3)-N leaching and modeling in the soil profile. In this study, the transport and fate of NO(3)-N within the soil profile and nitrate leaching to drains were analyzed by comparing field data with the simulation results of the LEACHM model. Comparisons between measured and simulated data indicated that the NO(3)-N concentrations in the soil and nitrate leaching to drains are controlled by the fertilizer practice, the initial conditions and the rainfall depth and distribution. Moreover, the study reveals that the LEACHM model gives a fair description of the NO(3)-N dynamics in the soil and subsurface drainage at the field scale. It can also be concluded that the model after calibration is a useful tool to optimize as a function of the combination “climate-crop-soil-bottom boundary condition” the nitrogen application strategy resulting for the environment in an acceptable level of nitrate leaching. The findings in this paper help to demonstrate the distribution and migration of nitrogen in intensive agriculture farmlands, as well as to explore the mechanism of groundwater contamination resulting from agricultural activities.
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spelling pubmed-37459862013-08-27 Nitrate-Nitrogen Leaching and Modeling in Intensive Agriculture Farmland in China Xu, Ligang Niu, Hailin Xu, Jin Wang, Xiaolong ScientificWorldJournal Research Article Protecting water resources from nitrate-nitrogen (NO(3)-N) contamination is an important public health concern and a major national environmental issue in China. Loss of NO(3)-N in soils due to leaching is not only one of the most important problems in agriculture farming, but is also the main factor causing nitrogen pollution in aquatic environments. Three typical intensive agriculture farmlands in Jiangyin City in China are selected as a case study for NO(3)-N leaching and modeling in the soil profile. In this study, the transport and fate of NO(3)-N within the soil profile and nitrate leaching to drains were analyzed by comparing field data with the simulation results of the LEACHM model. Comparisons between measured and simulated data indicated that the NO(3)-N concentrations in the soil and nitrate leaching to drains are controlled by the fertilizer practice, the initial conditions and the rainfall depth and distribution. Moreover, the study reveals that the LEACHM model gives a fair description of the NO(3)-N dynamics in the soil and subsurface drainage at the field scale. It can also be concluded that the model after calibration is a useful tool to optimize as a function of the combination “climate-crop-soil-bottom boundary condition” the nitrogen application strategy resulting for the environment in an acceptable level of nitrate leaching. The findings in this paper help to demonstrate the distribution and migration of nitrogen in intensive agriculture farmlands, as well as to explore the mechanism of groundwater contamination resulting from agricultural activities. Hindawi Publishing Corporation 2013-07-30 /pmc/articles/PMC3745986/ /pubmed/23983629 http://dx.doi.org/10.1155/2013/353086 Text en Copyright © 2013 Ligang Xu et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Xu, Ligang
Niu, Hailin
Xu, Jin
Wang, Xiaolong
Nitrate-Nitrogen Leaching and Modeling in Intensive Agriculture Farmland in China
title Nitrate-Nitrogen Leaching and Modeling in Intensive Agriculture Farmland in China
title_full Nitrate-Nitrogen Leaching and Modeling in Intensive Agriculture Farmland in China
title_fullStr Nitrate-Nitrogen Leaching and Modeling in Intensive Agriculture Farmland in China
title_full_unstemmed Nitrate-Nitrogen Leaching and Modeling in Intensive Agriculture Farmland in China
title_short Nitrate-Nitrogen Leaching and Modeling in Intensive Agriculture Farmland in China
title_sort nitrate-nitrogen leaching and modeling in intensive agriculture farmland in china
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3745986/
https://www.ncbi.nlm.nih.gov/pubmed/23983629
http://dx.doi.org/10.1155/2013/353086
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AT xujin nitratenitrogenleachingandmodelinginintensiveagriculturefarmlandinchina
AT wangxiaolong nitratenitrogenleachingandmodelinginintensiveagriculturefarmlandinchina