Meny

Du är här

The likely impact of elevated CO2, nitrogen deposition, increased temperature, and management on carbon sequestration in temperate and boreal forest ecosystems. A literature review

Författare:
  • R Hyvönen
  • GI Ågren
  • S Linder
  • T Persson
  • F Cotrufo
  • A Ekblad
  • M Freeman
  • A Grelle
  • I Janssens
  • P Jarvis
  • S Kellomäki
  • Anders Lindroth (Professor)
  • D Loustau
  • T Lundmark
  • R Norby
  • R Oren
  • K Pilegaard
  • M Ryan
  • B Sigurdsson
  • M Strömgren
  • M van Oijen
  • G Wallin
Publiceringsår: 2007
Språk: Engelska
Sidor: 463-480
Publikation/Tidskrift/Serie: New Phytologist
Volym: 173
Nummer: 3
Dokumenttyp: Artikel
Förlag: Blackwell

Sammanfattning

Temperate and boreal forest ecosystems contain a large part of the carbon stored on land, in the form of both biomass and soil organic matter. Increasing atmospheric [CO2], increasing temperature, elevated nitrogen deposition and intensified management will change this C store. Well documented single-factor responses of net primary production are: higher photosynthetic rate (the main [CO2] response); increasing length of growing season (the main temperature response); and higher leaf-area index (the main N deposition and partly [CO2] response). Soil organic matter will increase with increasing litter input, although priming may decrease the soil C stock initially, but litter quality effects should be minimal (response to [CO2], N deposition, and temperature); will decrease because of increasing temperature; and will increase because of retardation of decomposition with N deposition, although the rate of decomposition of high-quality litter can be increased and that of low-quality litter decreased. Single-factor responses can be misleading because of interactions between factors, in particular those between N and other factors, and indirect effects such as increased N availability from temperature-induced decomposition. In the long term the strength of feedbacks, for example the increasing demand for N from increased growth, will dominate over short-term responses to single factors. However, management has considerable potential for controlling the C store.

Disputation

Nyckelord

  • Earth and Environmental Sciences

Övriga

Published
Yes
  • ISSN: 0028-646X

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen