Effects of clear-cutting on nitrogen leaching and fine root dynamics in a cool-temperate forested watershed in northern Japan

Fukuzawa Karibu; Shibata Hideaki; Takagi Kentaro; Nomura Mutsumi; Kurima Noriko; Fukazawa Tatsuya; Satoh Fuyuki; Sasa Kaichiro

タイトル	en Effects of clear-cutting on nitrogen leaching and fine root dynamics in a cool-temperate forested watershed in northern Japan
作成者	en Fukuzawa, Karibu NRID 1000010456824 en Shibata, Hideaki NRID 1000070281798 en Takagi, Kentaro NRID 1000020322844 en Nomura, Mutsumi en Kurima, Noriko en Fukazawa, Tatsuya en Satoh, Fuyuki NRID 1000020187230 en Sasa, Kaichiro NRID 1000070125318
アクセス権	open access
権利情報	en © 2006 Elsevier B.V.
主題	Other en fine root biomass Other en nitrate Other en Sasa dwarf bamboo Other en soil solution Other en stream chemistry NDC 653
内容注記	Abstract en Stream and soil solution chemistry, fine root biomass and soil nitrogen processing before and after clear-cutting of trees and subsequent strip-cutting of understory vegetation, dwarf bamboo (Sasa senanensis), were investigated to understand the effect of these disturbances on biogeochemical processes on forested watershed in northern Japan. Tree-cutting did not cause a significant increase of nitrate (NO3−) concentration in stream water during the growing season after the cutting. Subsequent Sasa-cutting caused significant increase of stream NO3− concentration to ca. 15 μmol L−1. There was no significant change of stream pH following both cuttings. NO3− concentration in soil solution increased after both cutting, but the change of concentration was higher (>100 μmol L−1) after the Sasa-cutting than after the tree-cutting. In a riparian conserved area, on the other hand, NO3− in soil solution remained low after tree-cutting, suggesting the riparian area acted as a NO3− sink after the tree-cutting. There was no significant change in total biomass of fine roots after the tree-cutting because of an increase in Sasa root biomass despite a decrease in tree roots. The subsequent Sasa-cutting caused a 50% decrease of fine root biomass compared to that in the un-cut Sasa site. These results suggested that nitrogen uptake by Sasa was very important in preventing nitrogen leaching after tree-cutting, and decline of this nitrogen uptake after Sasa-cutting lead to marked NO3− leaching to the stream.
出版者	en Elsevier
日付	Issued2006-04-15
言語	eng
資源タイプ	journal article
出版タイプ	AM
資源識別子	HDL http://hdl.handle.net/2115/8541
関連	URI http://www.sciencedirect.com/science/journal/03781127 isVersionOf DOI https://doi.org/10.1016/j.foreco.2006.01.001
収録誌情報	PISSN 0378-1127 en Forest ecology and management 巻225 号1-3 開始ページ257 終了ページ261
ファイル	fulltext foreco 225(1-3) 257-261.pdf 220.63 KB (application/pdf) Issued2006-04-15
コンテンツ更新日時	2023-07-26