Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

 
 
DownloadE-Mail
  Large carbon uptake by an unmanaged 250-year-old deciduous forest in Central Germany

Knohl, A., Schulze, E.-D., Kolle, O., & Buchmann, N. (2003). Large carbon uptake by an unmanaged 250-year-old deciduous forest in Central Germany. Agricultural and Forest Meteorology, 118(3-4), 151-167.

Item is

Dateien

einblenden: Dateien
ausblenden: Dateien
:
BGC0612.pdf (Verlagsversion), 460KB
 
Datei-Permalink:
-
Name:
BGC0612.pdf
Beschreibung:
-
OA-Status:
Sichtbarkeit:
Eingeschränkt (Max Planck Institute for Biogeochemistry, MJBK; )
MIME-Typ / Prüfsumme:
application/octet-stream
Technische Metadaten:
Copyright Datum:
-
Copyright Info:
-
Lizenz:
-

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
Knohl, A.1, Autor           
Schulze, E.-D.2, Autor           
Kolle, O.3, Autor           
Buchmann, N.1, Autor           
Affiliations:
1Research Group Biodiversity Ecosystem, Dr. N. Buchmann, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497759              
2Department Biogeochemical Processes, Prof. E.-D. Schulze, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497751              
3Service Facility Field Measurements & Instrumentation, O. Kolle, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497769              

Inhalt

einblenden:
ausblenden:
Schlagwörter: net ecosystem exchange, carbon dioxide, eddy covariance, old growth, carbon sink, management Water-vapor exchange; net ecosystem exchange; flux measurements; dioxide exchange; boreal forest; beech forest; sonic anemometer; balance; respiration; long
 Zusammenfassung: Unmanaged forests at a late stage of successional development are considered to be insignificant as carbon sinks, since in theory, assimilation is thought to be balanced by respiration. However, little experimental evidence for this hypothesis exists so far for forests at the ecosystem level. Therefore, we performed continuous eddy covariance measurements of carbon dioxide over an unmanaged beech forest in the Hainich National Park in Central Germany as part of the EU project CARBOEUROFLUX. This forest shows typical characteristics of an 'advanced' forest with large dead wood pools, a diverse stand structure and a wide tree age class distribution, up to 250 years. This forest was a large carbon sink over 2 years, with 494 g C m(-2) per year in 2000 and 490 g C m(-2) per year in 2001. Daytime summer fluxes were strongly controlled by photosynthetic photon flux density (R-2 = 0.7-0.9), with minor effects of the ratio of diffuse to total downward radiation or the vapor pressure deficit. Nighttime CO2 fluxes were mainly controlled by soil temperature (R-2 = 0.8) and soil moisture. In addition, high nighttime CO2 fluxes (4-6 mumol m(-2) s(-1)) were found directly before and during bud break in spring as well as just after leaf fall of both years (2000 and 2001), reflecting stand physiology corresponding to phenological changes, independent of soil temperature. Additional wind profile measurements at five heights within the canopy revealed a decoupling of above and below canopy air flow under conditions of low friction velocity (u* < 0.4 m s(-1)), probably indicating down slope drainage. In conclusion, unmanaged forests at a comparatively late stage of successional development can still act as significant carbon sinks with large implications for forest management practice and negotiations about biological sinks within the Kyoto Protocol. (C) 2003 Elsevier Science B.V. All rights reserved.

Details

einblenden:
ausblenden:
Sprache(n):
 Datum: 2003
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: Anderer: BGC0612
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Agricultural and Forest Meteorology
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Amsterdam : Elsevier
Seiten: - Band / Heft: 118 (3-4) Artikelnummer: - Start- / Endseite: 151 - 167 Identifikator: CoNE: https://pure.mpg.de/cone/journals/resource/954928468040
ISSN: 0168-1923