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Aluminum dynamics in nitrogen saturated Andisols in Tokyo
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  • Mitsuhisa Baba,
  • Masanori Okazaki,
  • Yuko Itoh,
  • Kazuhide Matsuda,
  • Fuka Tachiyanagi,
  • Koki Toyoda
Mitsuhisa Baba
Kitasato University School of Veterinary Medicine Graduate School of Veterinary Medicine

Corresponding Author:[email protected]

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Masanori Okazaki
Japan Soil Research Institute Inc
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Yuko Itoh
Forestry and Forest Products Research Institute
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Kazuhide Matsuda
Tokyo University of Agriculture and Technology
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Fuka Tachiyanagi
Kitasato University School of Veterinary Medicine Graduate School of Veterinary Medicine
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Koki Toyoda
Tokyo University of Agriculture and Technology Graduate School of Bio-Application System Engineering
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Abstract

Although atmospheric nitrogen deposition due to throughfall has decreased in Tokyo metropolitan, the forested catchment which composed with Japanese cedar (Cryptomeria japonica), Japanese cypress (Chamaecyparis obtusa), and oak (Quercus serrata) was still nitrogen saturated. We aimed to elucidate effects of decrease in nitrogen deposition on aluminum (Al) dynamics in a forested Andisols. Throughfall and soil percolated water samples were taken under Japanese cedar stand and Japanese cypress stand in Hachioji, Tokyo (Field Museum Tamakyuryo). Major inorganic ions were determined by ion chromatography. Total Al concentrations were measured by atomic absorption spectrometry after concentrating under acidic condition. Aluminum concentrations were significantly correlated with nitrate (NO3-) concentration in both Japanese cedar stand and Japanese cypress stand. In case of Japanese cedar stand, Al concentrations tended to decrease with time. Acid load associated with N transformation ([H+]load), which was chosen as the sole factor for Al mobilization in Japanese cedar stand, has also decreased. Decrease in nitrogen deposition affected Al dynamics via decrease in [H+]load. It was suggested that the calcium (Ca) content in needles may promote recovery from soil acidification in Japanese cedar stand.
21 Sep 2023Submitted to Ecological Research
25 Sep 2023Submission Checks Completed
25 Sep 2023Assigned to Editor
25 Sep 2023Review(s) Completed, Editorial Evaluation Pending
26 Sep 2023Reviewer(s) Assigned
27 Jan 20241st Revision Received
30 Jan 2024Review(s) Completed, Editorial Evaluation Pending
30 Jan 2024Submission Checks Completed
30 Jan 2024Assigned to Editor
30 Jan 2024Reviewer(s) Assigned
24 Feb 2024Editorial Decision: Revise Minor
06 Mar 20242nd Revision Received
09 Mar 2024Submission Checks Completed
09 Mar 2024Assigned to Editor
09 Mar 2024Review(s) Completed, Editorial Evaluation Pending
11 Mar 2024Reviewer(s) Assigned
22 Mar 20243rd Revision Received
27 Mar 2024Review(s) Completed, Editorial Evaluation Pending
01 Apr 2024Editorial Decision: Accept