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Mathematical model of sediment and solute transport along slope land in different rainfall pattern conditions
Rainfall erosion is a major cause of inducing soil degradation, and rainfall patterns have a significant influence on the process of sediment yield and nutrient loss. The mathematical models developed in this study were used to simulate the sediment and nutrient loss in surface runoff. Four rainfall...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5341045/ https://www.ncbi.nlm.nih.gov/pubmed/28272431 http://dx.doi.org/10.1038/srep44082 |
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author | Tao, Wanghai Wu, Junhu Wang, Quanjiu |
author_facet | Tao, Wanghai Wu, Junhu Wang, Quanjiu |
author_sort | Tao, Wanghai |
collection | PubMed |
description | Rainfall erosion is a major cause of inducing soil degradation, and rainfall patterns have a significant influence on the process of sediment yield and nutrient loss. The mathematical models developed in this study were used to simulate the sediment and nutrient loss in surface runoff. Four rainfall patterns, each with a different rainfall intensity variation, were applied during the simulated rainfall experiments. These patterns were designated as: uniform-type, increasing-type, increasing- decreasing -type and decreasing-type. The results revealed that changes in the rainfall intensity can have an appreciable impact on the process of runoff generation, but only a slight effect on the total amount of runoff generated. Variations in the rainfall intensity in a rainfall event not only had a significant effect on the process of sediment yield and nutrient loss, but also the total amount of sediment and nutrient produced, and early high rainfall intensity may lead to the most severe erosion and nutrient loss. In this study, the calculated data concur with the measured values. The model can be used to predict the process of surface runoff, sediment transport and nutrient loss associated with different rainfall patterns. |
format | Online Article Text |
id | pubmed-5341045 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-53410452017-03-10 Mathematical model of sediment and solute transport along slope land in different rainfall pattern conditions Tao, Wanghai Wu, Junhu Wang, Quanjiu Sci Rep Article Rainfall erosion is a major cause of inducing soil degradation, and rainfall patterns have a significant influence on the process of sediment yield and nutrient loss. The mathematical models developed in this study were used to simulate the sediment and nutrient loss in surface runoff. Four rainfall patterns, each with a different rainfall intensity variation, were applied during the simulated rainfall experiments. These patterns were designated as: uniform-type, increasing-type, increasing- decreasing -type and decreasing-type. The results revealed that changes in the rainfall intensity can have an appreciable impact on the process of runoff generation, but only a slight effect on the total amount of runoff generated. Variations in the rainfall intensity in a rainfall event not only had a significant effect on the process of sediment yield and nutrient loss, but also the total amount of sediment and nutrient produced, and early high rainfall intensity may lead to the most severe erosion and nutrient loss. In this study, the calculated data concur with the measured values. The model can be used to predict the process of surface runoff, sediment transport and nutrient loss associated with different rainfall patterns. Nature Publishing Group 2017-03-08 /pmc/articles/PMC5341045/ /pubmed/28272431 http://dx.doi.org/10.1038/srep44082 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Tao, Wanghai Wu, Junhu Wang, Quanjiu Mathematical model of sediment and solute transport along slope land in different rainfall pattern conditions |
title | Mathematical model of sediment and solute transport along slope land in different rainfall pattern conditions |
title_full | Mathematical model of sediment and solute transport along slope land in different rainfall pattern conditions |
title_fullStr | Mathematical model of sediment and solute transport along slope land in different rainfall pattern conditions |
title_full_unstemmed | Mathematical model of sediment and solute transport along slope land in different rainfall pattern conditions |
title_short | Mathematical model of sediment and solute transport along slope land in different rainfall pattern conditions |
title_sort | mathematical model of sediment and solute transport along slope land in different rainfall pattern conditions |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5341045/ https://www.ncbi.nlm.nih.gov/pubmed/28272431 http://dx.doi.org/10.1038/srep44082 |
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