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タイトル: | Soil nitrogen dynamics during stand development after clear-cutting of Japanese cedar (Cryptomeria japonica) plantations |
著者: | Fukushima, Keitaro Tateno, Ryunosuke https://orcid.org/0000-0001-8461-3696 (unconfirmed) Tokuchi, Naoko |
著者名の別形: | 福島, 慶太郎 |
キーワード: | Biomass productivity Internal nitrogen cycling Japanese cedar plantations Soil nitrogen availability Stand development |
発行日: | Oct-2011 |
出版者: | The Japanese Forest Society and Springer |
誌名: | Journal of Forest Research |
巻: | 16 |
号: | 5 |
開始ページ: | 394 |
終了ページ: | 404 |
抄録: | We examined soil N dynamics, including inorganic N concentration, net N transformation rates, and estimated plant N uptake (EPNU) from soil N budgets, and litterfall inputs, in five Japanese cedar plantation stands of different ages (5, 16, 31, 42, and 89 years) in the Mt Gomadan Experimental Forest (GEF). Net soil N mineralization and nitrification rates did not differ significantly between the youngest and oldest stands; soil moisture and inorganic N concentration were higher in the youngest stand. The EPNU was highest in the 16-year-old stand and lowest in the 31-year-old stand, and had a significant negative correlation with litter C:N ratio. The oldest (89-year-old) stand had a higher soil C:N ratio, lower proportion of nitrification rate to mineralization rate (%NIT), and higher estimated plant NH4 + uptake than did the other stands, indicating that changes of soil organic matter quality can alter soil N dynamics. These results suggest that as a Japanese cedar plantation develops, soil N dynamics can be altered by the quantity and quality of input litter and soil organic matter, and can generate the imbalance between N supply from soil and N demand by plant. |
著作権等: | The final publication is available at www.springerlink.com この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 This is not the published version. Please cite only the published version. |
URI: | http://hdl.handle.net/2433/147247 |
DOI(出版社版): | 10.1007/s10310-011-0286-1 |
出現コレクション: | 学術雑誌掲載論文等 |
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