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The trends of aquacultural nitrogen budget and its environmental implications in China

The rapid development of aquaculture has sustained aquatic food production but has also led to a host of environmental problems, ranging from eutrophication of aquatic ecosystems to global acidification. China has become the world’s largest producer and consumer of aquaculture products. Nitrogen is...

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Autores principales: Luo, Zhibo, Hu, Shanying, Chen, Dingjiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6052169/
https://www.ncbi.nlm.nih.gov/pubmed/30022152
http://dx.doi.org/10.1038/s41598-018-29214-y
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author Luo, Zhibo
Hu, Shanying
Chen, Dingjiang
author_facet Luo, Zhibo
Hu, Shanying
Chen, Dingjiang
author_sort Luo, Zhibo
collection PubMed
description The rapid development of aquaculture has sustained aquatic food production but has also led to a host of environmental problems, ranging from eutrophication of aquatic ecosystems to global acidification. China has become the world’s largest producer and consumer of aquaculture products. Nitrogen is an essential nutrient in aquaculture ecosystems, and the quantitative environmental fate and impact of nitrogen during aquaculture processes have notable environmental consequences but have received little attention. Here, we established a nitrogen cycling model for China’s aquaculture ecosystem to investigate the creation and fate of reactive nitrogen over a decadal time scale. A nitrogen balance analysis showed that reactive nitrogen input in the aquaculture ecosystem increased from 9.43 Tg N yr(−1) in 1978 to 18.54 Tg N yr(−1) in 2015, while aquaculture production increased from 0.034 to 1.33 Tg N yr(−1) during the same period. The environmental fate analysis showed that nitrogen emissions, accumulation, sediment deposition, and export into the oceans increased by 9.05-fold, 0.24-fold, 9.04-fold, and 2.56-fold, respectively. Finally, we investigated four scenarios representing different consumption levels of aquatic products and provided policy recommendations (larger aquaculture size, standardized aquaculture production model, nutritional element management and balanced dietary structure, etc.) on improved management practices in aquaculture ecosystems.
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spelling pubmed-60521692018-07-23 The trends of aquacultural nitrogen budget and its environmental implications in China Luo, Zhibo Hu, Shanying Chen, Dingjiang Sci Rep Article The rapid development of aquaculture has sustained aquatic food production but has also led to a host of environmental problems, ranging from eutrophication of aquatic ecosystems to global acidification. China has become the world’s largest producer and consumer of aquaculture products. Nitrogen is an essential nutrient in aquaculture ecosystems, and the quantitative environmental fate and impact of nitrogen during aquaculture processes have notable environmental consequences but have received little attention. Here, we established a nitrogen cycling model for China’s aquaculture ecosystem to investigate the creation and fate of reactive nitrogen over a decadal time scale. A nitrogen balance analysis showed that reactive nitrogen input in the aquaculture ecosystem increased from 9.43 Tg N yr(−1) in 1978 to 18.54 Tg N yr(−1) in 2015, while aquaculture production increased from 0.034 to 1.33 Tg N yr(−1) during the same period. The environmental fate analysis showed that nitrogen emissions, accumulation, sediment deposition, and export into the oceans increased by 9.05-fold, 0.24-fold, 9.04-fold, and 2.56-fold, respectively. Finally, we investigated four scenarios representing different consumption levels of aquatic products and provided policy recommendations (larger aquaculture size, standardized aquaculture production model, nutritional element management and balanced dietary structure, etc.) on improved management practices in aquaculture ecosystems. Nature Publishing Group UK 2018-07-18 /pmc/articles/PMC6052169/ /pubmed/30022152 http://dx.doi.org/10.1038/s41598-018-29214-y Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Luo, Zhibo
Hu, Shanying
Chen, Dingjiang
The trends of aquacultural nitrogen budget and its environmental implications in China
title The trends of aquacultural nitrogen budget and its environmental implications in China
title_full The trends of aquacultural nitrogen budget and its environmental implications in China
title_fullStr The trends of aquacultural nitrogen budget and its environmental implications in China
title_full_unstemmed The trends of aquacultural nitrogen budget and its environmental implications in China
title_short The trends of aquacultural nitrogen budget and its environmental implications in China
title_sort trends of aquacultural nitrogen budget and its environmental implications in china
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6052169/
https://www.ncbi.nlm.nih.gov/pubmed/30022152
http://dx.doi.org/10.1038/s41598-018-29214-y
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