Strong and stable relationships between tree-ring parameters and forest-level carbon fluxes in a Siberian larch forest

Tei, Shunsuke; Sugimoto, Atsuko; Kotani, Ayumi; Ohta, Takeshi; Morozumi, Tomoki; Saito, Soma; Hashiguchi, Shuhei; Maximov, Trofim

Strong and stable relationships between tree-ring parameters and forest-level carbon fluxes in a Siberian larch forest

Tei, Shunsuke; Sugimoto, Atsuko; Kotani, Ayumi et al.

Polar Science, 2019, 21, 146-157

Permalink : https://hdl.handle.net/2115/83185

このアイテムのアクセス数:454件（2026-10-09 02:16 集計）

閲覧可能ファイル

ファイル	フォーマット	サイズ	閲覧回数	説明
https://doi.org/10.1016/j.polar.2019.02.001			11

論文情報

ファイル出力 EndNote Basic出力 Mendeley出力

アクセス権	open access
URI	https://hdl.handle.net/2115/83185
タイトル	Strong and stable relationships between tree-ring parameters and forest-level carbon fluxes in a Siberian larch forest
著者	Tei, Shunsuke ; Sugimoto, Atsuko ; Kotani, Ayumi ; Ohta, Takeshi ; Morozumi, Tomoki ; Saito, Soma ; Hashiguchi, Shuhei ; Maximov, Trofim
e-Rad_Researcher 40710661 著者名 Tei, Shunsuke
e-Rad_Researcher 50235892 著者名 Sugimoto, Atsuko
e-Rad_Researcher 80447242 著者名 Kotani, Ayumi
e-Rad_Researcher 20152142 著者名 Ohta, Takeshi
e-Rad_Researcher 40866638 著者名 Morozumi, Tomoki
著者名 Saito, Soma
著者名 Hashiguchi, Shuhei
著者名 Maximov, Trofim
言語	英語
キーワード	Eastern Siberia
	Tree ring
	NDVI
	CO2 flux
	Climate change
発行日	2019-09-01
出版者	Elsevier
収録物名	Polar Science
巻(号)	21
ページ	146-157
抄録	The tree-ring width index (RWI) and satellite-derived vegetation indices, such as the Normalized Difference Vegetation Index (NDVI), are used as long-term indicators of the past forest carbon uptake. However, fundamental questions remain with respect to what is represented by the RWI and NDVI at the ecosystem level. To address this question, we compared tree-ring parameters (RWI and the carbon isotope ratio: delta C-13) and NDVI products with forest ecosystem CO2 fluxes estimated using the eddy covariance method, at a larch forest in eastern Siberia. The RWI and tree-ring delta C-13 correlated well with the ecosystem gross primary production (GPP), and their temporal stabilities were high during 2004-2014. However, the NDVI products did not show any temporally stable relationship with the GPP. This could be ascribed to significant changes in the understory vegetation in this forest, i.e., from dense cowberry to shrubs and moisture-tolerant grasses, because of an excessively moist environment during 2007-2008. Changes in the understory vegetation could be reflected by the NDVI products but not by the GPP. Our results indicate that it is more feasible to study forest carbon uptake using tree-ring parameters than using satellite-derived vegetation indices in such larch-dominated forest ecosystems in eastern Siberia.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
PISSN	1873-9652
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1016/j.polar.2019.02.001