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林业科学 ›› 2010, Vol. 46 ›› Issue (3): 161-165.doi: 10.11707/j.1001-7488.20100325

• 研究简报 • 上一篇    下一篇

长白山岳桦体内碳素供应状况

周永斌1 吴栋栋1 于大炮2   

  1. 1.沈阳农业大学林学院沈阳 110161;2.中国科学院沈阳应用生态研究所沈阳 110016
  • 收稿日期:2008-12-12 修回日期:1900-01-01 出版日期:2010-03-25 发布日期:2010-03-25

Carbon Supply Status in the Betula ermanii in Changbai Mountain

Zhou Yongbin1,Wu Dongdong1,Yu Dapao2   

  1. 1.Forestry College,Shenyang Agricultural UniversityShenyang 110161;2.Institute of Applied Ecology,Chinese Academy of SciencesShenyang 110016
  • Received:2008-12-12 Revised:1900-01-01 Online:2010-03-25 Published:2010-03-25

关键词: 岳桦, 非结构性碳水化合物, 树木线, 长白山

Abstract:

The experimental sites were set on the north slope of Changbai Mountain. This paper investigated the tissue non-structural carbohydrates (NSC) content of Betula ermanii at the different elevations up to timberline during the growing season. The results indicated that the overall altitudinal trends of NSC in the Betula ermanii were increasing along elevation gradients, and no depletion of carbon reserves was found near the tree limit, suggesting that sink limitation determines woody plant life across this timberline ecotone community. The results also suggest that the stronger frost resistance of the plants located at a timberline elevation would be associated with their stronger synthesis of the carbohydrates.

Key words: Betula ermanii, nonstructural carbohydrates, timberline, Changbai Mountain