2001年8月
Forest floor quality and N transformations in a temperate forest affected by avian-derived N deposition
WATER AIR AND SOIL POLLUTION
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- 巻
- 130
- 号
- 1-4
- 開始ページ
- 679
- 終了ページ
- 684
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1023/A:1013869115132
- 出版者・発行元
- KLUWER ACADEMIC PUBL
To evaluate the effects of avian-derived N deposition on forest C and N status, we investigated quantity and quality of litterfall, and chemical quality and N transformations in the forest floor from five sites that had been exposed to waterbird breeding colonies to differing degrees. The highest litterfall input of 2.6 t ha(-1) month(-1) was observed in the forest stand (Site 2) where intense bird breeding activity had been observed. Litterfall C/N was highest at the control site (no breeding activity) and decreased as the colonization stages advanced. Nitrogen concentration in litterfall and the forest floor was higher at those sites (Sites 3 and 4) where bird breeding had ceased and which represented the 'post-colony' situation, and consequently C/N and lignin/N of forest floor decreased. NH4-N pool size in the forest floor was higher at Site 2, probably due to ongoing input and mineralization of bird excreta. Nitrification rate and percent nitrification were highest at Sites 3 and 4. From these results we conclude that study sites exposed to bird colonies show signs of N excess even after colonies are abandoned.
- リンク情報
- ID情報
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- DOI : 10.1023/A:1013869115132
- ISSN : 0049-6979
- J-Global ID : 200902129892257978
- Web of Science ID : WOS:000172011900084