検索画面に戻る Go Research

	(168Kb)

[B-2.2 Analysis and Modeling of Carbon Sequestration of Forest Stands]

[Contact Person]

Matsuura, Yojiro
Forest Soil Laboratory, Hokkaido Research Center,
Forestry and Forest Products Research Institute,
Ministry of Agriculture, Forestry, and Fishery.
7 Hitsujigaoka, Toyohira, Sapporo 062-8516
Tel: +81-11-851+4131 ext.250,   Fax: +81-11+851+4167
Email: orijoy@ffpri-hkd.affrc.go.jp

[Total Budget for FY1997-FY2000]

22,085,000 Yen (FY2000;  3,990,000 Yen)

[Abstract]

　We measured ecological parameters of larch forests in continuous permafrost region in central Siberia, for constructing a model of carbon sequestration at a stand level. The maximum photosynthetic rate of Larix gmelinii was 1.5 fold higher than that of Japanese larch. Tree respiration derived from aboveground and belowground part was 112 and 104 gC/m²/yr, respectively. Soil respiration was 331 gC/m²/yr, of which approximately 30 % were root respiration. Biomass allocation rate between above- and belowground was nearly 1:1. This suggests that below ground part is large sink. The unique relationship of self-thinning processes occurred in continuous permafrost region. Soil nutrient status is one of key factors that determine stand development patterns. Soil organic carbon storage and tight nitrogen cycling in the larch ecosystems are discussed.

[Key Words]

permafrost, Siberia, larch forest, above- and below-ground biomass,carbon storage