Increasing net CO2 uptake by a Danish beech forest during the period from 1996 
to 2009

Pilegaard, Kim; Ibrom, Andreas; Courtney, Michael S.; Hummelshøj, Poul; Jensen, Niels Otto

doi:10.1016/j.agrformet.2011.02.013

詳細要約

Increasing net CO₂ uptake by a Danish beech forest during the period from 1996 to 2009

Pilegaard, K., Ibrom, A., Courtney, M. S., Hummelshøj, P., & Jensen, N. O. (2011). Increasing net CO₂ uptake by a Danish beech forest during the period from 1996 to 2009. Agricultural and Forest Meteorology, 151, 934-946. doi:10.1016/j.agrformet.2011.02.013.

Item is 公開

表示: 全項目非表示: 全項目

基本情報

表示: 非表示:

アイテムのパーマリンク: https://hdl.handle.net/11858/00-001M-0000-0014-4F3D-2 版のパーマリンク: https://hdl.handle.net/11858/00-001M-0000-0014-4F65-6

資料種別: 学術論文

ファイル

表示: ファイル

非表示: ファイル

:

BPR030.pdf (出版社版), 2MB

ファイルのパーマリンク:
-

ファイル名:
BPR030.pdf

説明:
-

OA-Status:

閲覧制限:
制限付き (Max Planck Institute for Biogeochemistry, MJBK; )

MIMEタイプ / チェックサム:
application/pdf

技術的なメタデータ:

著作権日付:
-

著作権情報:
-

CCライセンス:
-

作成者

表示:

非表示:

作成者:
Pilegaard, Kim¹, 著者
Ibrom, Andreas, 著者
Courtney, Michael S., 著者
Hummelshøj, Poul, 著者
Jensen, Niels Otto, 著者

所属:
1External Organizations, ou_persistent22

内容説明

表示:

非表示:

キーワード: -

要旨: The exchange of CO2 between the atmosphere and a beech forest near Sorø, Denmark, was measured continuously over 14 years (1996–2009). The simultaneous measurement of many parameters that influence CO2 uptake makes it possible to relate the CO2 exchange to recent changes in e.g. temperature and atmospheric CO2 concentration. The net CO2 exchange (NEE) was measured by the eddy covariance method. Ecosystem respiration (RE) was estimated from nighttime values and gross ecosystem exchange (GEE) was calculated as the sum of RE and NEE. Over the years the beech forest acted as a sink of on average of 157gCm−2 yr−1. In one of the years only, the forest acted as a small source. During 1996–2009 a significant increase in annual NEE was observed. A significant increase in GEE and a smaller and not significant increase in RE was also found. Thus the increased NEE was mainly attributed to an increase in GEE. The overall trend in NEE was significant with an average increase in uptake of 23gCm−2 yr−2. The carbon uptake period (i.e. the period with daily net CO2 gain) increased by 1.9 days per year, whereas there was a non significant tendency of increase of the leafed period. This means that the leaves stayed active longer. The analysis of CO2 uptake by the forest by use of light response curves, revealed that the maximum rate of photosynthetic assimilation increased by 15% during the 14-year period. We conclude that the increase in the overall CO2 uptake of the forest is due to a combination of increased growing season length and increased uptake capacity. We also conclude that long time series of flux measurements are necessary to reveal trends in the data because of the substantial inter-annual variation in the flux.

資料詳細

表示:

非表示:

言語:

日付: 受理: 2011-01-25出版: 2011

出版の状態: 出版

ページ: -

出版情報: -

目次: -

査読: -

識別子（DOI, ISBNなど）: その他: BPR030
DOI: 10.1016/j.agrformet.2011.02.013

学位: -

訴訟

表示:

Project information

表示:

出版物 1

表示:

非表示:

出版物名: Agricultural and Forest Meteorology

種別: 学術雑誌

著者・編者:

所属:

出版社, 出版地: Amsterdam : Elsevier

ページ: - 巻号: 151 通巻号: - 開始・終了ページ: 934 - 946 識別子（ISBN, ISSN, DOIなど）: ISSN: 0168-1923
CoNE: https://pure.mpg.de/cone/journals/resource/954928468040

アイテム詳細

基本情報

ファイル

関連URL

作成者

内容説明

資料詳細

関連イベント

訴訟

Project information

出版物 1