Overestimated biomass carbon pools of the northern mid- and high latitude forests

Fang Jingyun, S. Brown, Tang Yanhong, G.J. Nabuurs, Wang Xiangping, Shen Haihua

Research output: Contribution to journalArticleAcademicpeer-review

55 Citations (Scopus)

Abstract

The biomass carbon (C) stock of forests is one of key parameters for the study of regional and global carbon cycles. Literature reviews shows that inventory-based forest C stocks documented for major countries in the middle and high northern latitudes fall within a narrow range of 36-56 Mg C ha(-1) with an overall area-weighted mean of 43.6 Mg C ha(-1). These estimates are 0.40 to 0.71 times smaller than those (61-108 Mg C ha(-1)) used in previous analysis of balancing the global carbon budget. A statistical analysis, using the global forest biomass database, implies that aboveground biomass per hectare is proportional to forest mean height [biomass in Mg/ha = 10.63 (height in m)] in closed-canopy forests in the study regions, indicating that forest height can be a proxy of regional biomass C stocks. The narrow range of C stocks is likely a result of similar forest height across the northern regions. The lower biomass C stock obtained in this study strongly suggests that the role of the northern forests in the global carbon cycle needs to be re-evaluated. Our findings also suggest that regional estimates of biomass could be readily made from the use of satellite methods such as lidar that can measure forest canopy height over large regions.
Original languageEnglish
Pages (from-to)355-368
JournalClimatic Change
Volume74
Issue number1-3
DOIs
Publication statusPublished - 2006

Keywords

  • inventory data
  • united-states
  • terrestrial ecosystems
  • russian forests
  • woody biomass
  • us forests
  • sink
  • storage
  • china
  • vegetation

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