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Nitrogen and phosphorus losses via surface runoff from tea plantations in the mountainous areas of Southwest China

Nowadays, there has been a rapid expansion of tea plantations in the mountainous areas of southwest China. However, little research has focused on the pollution problems caused by the losses of nitrogen and phosphorus from tea plantations in this area. Therefore, a field experiment was conducted usi...

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Autores principales: Huang, Xingcheng, Zhen, Darong, Lu, Xiaona, Zhang, Yarong, Liu, Yanling, Li, Yu, Jiang, Taiming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10289461/
https://www.ncbi.nlm.nih.gov/pubmed/37352210
http://dx.doi.org/10.1371/journal.pone.0285112
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author Huang, Xingcheng
Zhen, Darong
Lu, Xiaona
Zhang, Yarong
Liu, Yanling
Li, Yu
Jiang, Taiming
author_facet Huang, Xingcheng
Zhen, Darong
Lu, Xiaona
Zhang, Yarong
Liu, Yanling
Li, Yu
Jiang, Taiming
author_sort Huang, Xingcheng
collection PubMed
description Nowadays, there has been a rapid expansion of tea plantations in the mountainous areas of southwest China. However, little research has focused on the pollution problems caused by the losses of nitrogen and phosphorus from tea plantations in this area. Therefore, a field experiment was conducted using the runoff plots in situ monitoring method following farmers’ conventional management from 2018 to 2020 in Guizhou Province, southwest China. The characteristics of nitrogen and phosphorus losses from tea plantation in the mountainous area were clarified, and the effect of rainfall intensity on the nitrogen and phosphorus losses were explored. 298 natural rainfall events with a total rainfall of 2258 mm were observed during the 2-year observation period, and erosive rainfall accounted for 78.1% of the total rainfall. The total surface runoff amount was 72 mm, and the surface runoff coefficient was 3.19%. The total nitrogen (TN) and total phosphorus (TP) concentrations in the surface runoff ranged from 0.68 to 14.86 mg·L(−1) and 0.18 to 2.34 mg·L(−1), respectively. The TN and TP losses from tea plantations were 1.47 kg N ha(−1) yr(−1) and 0.210 kg P ha(−1) yr(−1). Rainfall intensity directly and significantly affected the surface runoff and nitrogen and phosphorus loss. Where 72.6% of the cumulative rainfall, 92.5% of the total surface runoff amounts, 87.4% of total nitrogen loss, and 90.5% of total phosphorus loss were observed in rainfall events above 10 mm. Taken together, the results provide scientific guidance for quantifying the characteristics of nutrient loss in subtropical mountain tea plantations.
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spelling pubmed-102894612023-06-24 Nitrogen and phosphorus losses via surface runoff from tea plantations in the mountainous areas of Southwest China Huang, Xingcheng Zhen, Darong Lu, Xiaona Zhang, Yarong Liu, Yanling Li, Yu Jiang, Taiming PLoS One Research Article Nowadays, there has been a rapid expansion of tea plantations in the mountainous areas of southwest China. However, little research has focused on the pollution problems caused by the losses of nitrogen and phosphorus from tea plantations in this area. Therefore, a field experiment was conducted using the runoff plots in situ monitoring method following farmers’ conventional management from 2018 to 2020 in Guizhou Province, southwest China. The characteristics of nitrogen and phosphorus losses from tea plantation in the mountainous area were clarified, and the effect of rainfall intensity on the nitrogen and phosphorus losses were explored. 298 natural rainfall events with a total rainfall of 2258 mm were observed during the 2-year observation period, and erosive rainfall accounted for 78.1% of the total rainfall. The total surface runoff amount was 72 mm, and the surface runoff coefficient was 3.19%. The total nitrogen (TN) and total phosphorus (TP) concentrations in the surface runoff ranged from 0.68 to 14.86 mg·L(−1) and 0.18 to 2.34 mg·L(−1), respectively. The TN and TP losses from tea plantations were 1.47 kg N ha(−1) yr(−1) and 0.210 kg P ha(−1) yr(−1). Rainfall intensity directly and significantly affected the surface runoff and nitrogen and phosphorus loss. Where 72.6% of the cumulative rainfall, 92.5% of the total surface runoff amounts, 87.4% of total nitrogen loss, and 90.5% of total phosphorus loss were observed in rainfall events above 10 mm. Taken together, the results provide scientific guidance for quantifying the characteristics of nutrient loss in subtropical mountain tea plantations. Public Library of Science 2023-06-23 /pmc/articles/PMC10289461/ /pubmed/37352210 http://dx.doi.org/10.1371/journal.pone.0285112 Text en © 2023 Huang et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Huang, Xingcheng
Zhen, Darong
Lu, Xiaona
Zhang, Yarong
Liu, Yanling
Li, Yu
Jiang, Taiming
Nitrogen and phosphorus losses via surface runoff from tea plantations in the mountainous areas of Southwest China
title Nitrogen and phosphorus losses via surface runoff from tea plantations in the mountainous areas of Southwest China
title_full Nitrogen and phosphorus losses via surface runoff from tea plantations in the mountainous areas of Southwest China
title_fullStr Nitrogen and phosphorus losses via surface runoff from tea plantations in the mountainous areas of Southwest China
title_full_unstemmed Nitrogen and phosphorus losses via surface runoff from tea plantations in the mountainous areas of Southwest China
title_short Nitrogen and phosphorus losses via surface runoff from tea plantations in the mountainous areas of Southwest China
title_sort nitrogen and phosphorus losses via surface runoff from tea plantations in the mountainous areas of southwest china
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10289461/
https://www.ncbi.nlm.nih.gov/pubmed/37352210
http://dx.doi.org/10.1371/journal.pone.0285112
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