Low nitrogen retention in a Japanese cedar plantation in a suburban area, western Japan

Abstract This study aimed to evaluate nitrogen (N) leaching from Japanese cedar, the main plantation species in Japan, in response to elevated atmospheric N deposition. N leaching and possible factors, including soil nitrification, tree N uptake, and topographic steepness, were evaluated in mature (...

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Autores principales:	Ru Yang, Masaaki Chiwa
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d783e31a546b495bba9368197e374d2d
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spelling	oai:doaj.org-article:d783e31a546b495bba9368197e374d2d2021-12-02T13:34:51ZLow nitrogen retention in a Japanese cedar plantation in a suburban area, western Japan10.1038/s41598-021-84753-12045-2322https://doaj.org/article/d783e31a546b495bba9368197e374d2d2021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-84753-1https://doaj.org/toc/2045-2322Abstract This study aimed to evaluate nitrogen (N) leaching from Japanese cedar, the main plantation species in Japan, in response to elevated atmospheric N deposition. N leaching and possible factors, including soil nitrification, tree N uptake, and topographic steepness, were evaluated in mature (64–69 year) Japanese cedar trees planted on steep slopes (25°–40°) and neighboring Japanese oak plantations in suburban forests, which served as reference sites. N fertilization (50 kg N ha−1 year−1 as ammonium nitrate) was conducted to evaluate the response of N leaching to an elevated inorganic N pool in the surface soil. The soil water nitrate (NO3 −) concentration below the rooting zone in the Japanese cedar forest (607 ± 59 μmol L−1) was much higher than that in the Japanese oak plantations (8.7 ± 8.1 μmol L−1) and increased immediately after fertilization, indicating high N leaching from the Japanese cedar plantations. The relatively low N uptake by Japanese cedar planted on the steep slopes could be an important contributor to the high N leaching. This study highlights the importance of vegetation composition for managing the water quality in headwater streams from forest ecosystems disturbed by atmospheric N deposition.Ru YangMasaaki ChiwaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ru Yang Masaaki Chiwa Low nitrogen retention in a Japanese cedar plantation in a suburban area, western Japan
description	Abstract This study aimed to evaluate nitrogen (N) leaching from Japanese cedar, the main plantation species in Japan, in response to elevated atmospheric N deposition. N leaching and possible factors, including soil nitrification, tree N uptake, and topographic steepness, were evaluated in mature (64–69 year) Japanese cedar trees planted on steep slopes (25°–40°) and neighboring Japanese oak plantations in suburban forests, which served as reference sites. N fertilization (50 kg N ha−1 year−1 as ammonium nitrate) was conducted to evaluate the response of N leaching to an elevated inorganic N pool in the surface soil. The soil water nitrate (NO3 −) concentration below the rooting zone in the Japanese cedar forest (607 ± 59 μmol L−1) was much higher than that in the Japanese oak plantations (8.7 ± 8.1 μmol L−1) and increased immediately after fertilization, indicating high N leaching from the Japanese cedar plantations. The relatively low N uptake by Japanese cedar planted on the steep slopes could be an important contributor to the high N leaching. This study highlights the importance of vegetation composition for managing the water quality in headwater streams from forest ecosystems disturbed by atmospheric N deposition.
format	article
author	Ru Yang Masaaki Chiwa
author_facet	Ru Yang Masaaki Chiwa
author_sort	Ru Yang
title	Low nitrogen retention in a Japanese cedar plantation in a suburban area, western Japan
title_short	Low nitrogen retention in a Japanese cedar plantation in a suburban area, western Japan
title_full	Low nitrogen retention in a Japanese cedar plantation in a suburban area, western Japan
title_fullStr	Low nitrogen retention in a Japanese cedar plantation in a suburban area, western Japan
title_full_unstemmed	Low nitrogen retention in a Japanese cedar plantation in a suburban area, western Japan
title_sort	low nitrogen retention in a japanese cedar plantation in a suburban area, western japan
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/d783e31a546b495bba9368197e374d2d
work_keys_str_mv	AT ruyang lownitrogenretentioninajapanesecedarplantationinasuburbanareawesternjapan AT masaakichiwa lownitrogenretentioninajapanesecedarplantationinasuburbanareawesternjapan
_version_	1718392763352875008

Low nitrogen retention in a Japanese cedar plantation in a suburban area, western Japan

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