Carbon and nitrogen distribution across a chronosequence of secondary lacebark pine in China

作者：Chunyi Li, Tianshan Zha, Jinglan Liu, Xin Jia · 发表于：The Forestry Chronicle · 年份：2013 · DOI：10.5558/tfc2013-037 · 被引用次数：25 · 研究领域：Forest ecology and management、Plant Water Relations and Carbon Dynamics、Tree-ring climate responses

Information about carbon (C) and nitrogen (N) pools is lacking for lacebark pine forests. Ecosystem C (93.38–240.34 Mg C ha −1 ) and N (6.60–8.63 Mg N ha −1 ) increased with stand age. This pattern applied to all tree components and litter. However, changes in C and N stocks during stand development showed the reverse U-shaped pattern for the understory and for mineral soil. Mineral soil was the dominant N pool for all stands (79%–96%) and the largest C pool in younger stands (53%–71%). Trees were the largest C pool in older stands (55%–62%). The contribution of trees to ecosystem C and N pools increased with stand age but that of mineral soil decreased with stand age. These findings contribute to the development and evaluation of forest C and N storage models and to forest management for enhancing C sequestration.