日本語
 
Help Privacy Policy ポリシー/免責事項
  詳細検索ブラウズ

アイテム詳細

  Spatial and temporal variation in respiration in a young ponderosa pine forests during a summer drought

Law, B. E., Kelliher, F. M., Baldocchi, D. D., Anthoni, P. M., Irvine, J., Moore, D., & Van Tuyl, S. (2001). Spatial and temporal variation in respiration in a young ponderosa pine forests during a summer drought. Agricultural and Forest Meteorology, 110(1), 27-43.

Item is

基本情報

表示: 非表示:
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
:
BGC0378.pdf (出版社版), 354KB
 
ファイルのパーマリンク:
-
ファイル名:
BGC0378.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/octet-stream
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:
-

関連URL

表示:

作成者

表示:
非表示:
 作成者:
Law, B. E., 著者
Kelliher, F. M., 著者
Baldocchi, D. D., 著者
Anthoni, P. M.1, 著者           
Irvine, J., 著者
Moore, D., 著者
Van Tuyl, S., 著者
所属:
1External Organizations, ou_persistent22              

内容説明

表示:
非表示:
キーワード: respiration; eddy covariance; soil CO2 efflux; AmeriFlux; soil chambers Water-vapor exchange; soil CO2 efflux; carbon-dioxide; eddy covariance; ecosystem; nitrogen; radiata; tree; density; fluxes
 要旨: Respiration rates of heterogeneous forest canopies arise from needles, stems, roots and soil microbes. To assess the temporal and spatial variation in respiration rates of these components in a heterogeneous ponderosa pine forest canopy, and the processes that control these fluxes, we conducted an intensive field study during the summer of 2000. We employed a combination of biological and micrometeorological measurements to assess carbon respiratory fluxes at the soil surface, within and above a 4-m-tall ponderosa pine forest. We also conducted manipulation studies to examine the carbon fluxes from the roots and heteorotrophs. Spatial variation in Soil CO2 efflux was large, averaging 40% of the mean, which varied by nearly a factor of two between minima for bare soil to maxima beneath dense patches of understorey vegetation. The estimated vertical profile of respiration from chamber data, and the profile of nocturnal fluxes measured by the three eddy flux systems suggested that > 70% of the ecosystem respiration was coming from below the 1.75-m measurement height of one of the flux systems, and 71% of photosynthetic carbon uptake in July was released by soil processes, thus there was a strong vertical gradient in respiration relatively close to the soil surface in this young forest. These results stress the importance of understanding spatial and temporal variation in soil processes when interpreting nocturnal eddy covariance data. (C) 2001 Elsevier Science B.V. All rights reserved.

資料詳細

表示:
非表示:
言語:
 日付: 2001
 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: BGC0378
 学位: -

関連イベント

表示:

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: 110 (1) 通巻号: - 開始・終了ページ: 27 - 43 識別子(ISBN, ISSN, DOIなど): CoNE: https://pure.mpg.de/cone/journals/resource/954928468040
ISSN: 0168-1923