Qi Guang, Wang Qing-Li, Wang Xin-Chuang, Qi Lin, Wang Qing-Wei, Ye Yu-Jing, Dai Li-Min
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
Ying Yong Sheng Tai Xue Bao. 2011 Feb;22(2):273-9.
Through sampling site investigation, this paper studied the carbon storage of arbor, herb, and whole vegetation in 10-, 12-, 15-, 26-, and 61-year old Larix gmelinii plantations in Huzhong Forestry Bureau of Great Xing' an Mountains, Northeast China, and 'temporal for spatial' method was employed to approach the variations of the vegetation carbon storage during the growth of the plantations. The results revealed that the vegetation carbon storage in the plantations increased with stand age, and reached 105.69 t x hm(-2) at age of 61 years, representing a marked role as a carbon sink. The L. gmelinii plantations at the ages from 15 to 26 years had the strongest capability in carbon sequestration, in which, the carbon storage in trunk occupied 54.3% -73.9% of the total carbon storage of arbor, and, with the increase of stand age, the trunk's carbon storage to the total carbon storage of arbor as well as the trunk's carbon density increased. As for the other organs, the rate of their carbon storage to the total carbon storage of arbor decreased with stand age, while their carbon density increased first but eventually leveled off or had a slight decrease till at age of 61 years. Based on these results, the rotation age for the L. gmelinii plantations in Great Xing' an Mountains would properly be lengthened to at least 60 years.
通过样地调查，研究了中国东北大兴安岭呼中林业局10年、12年、15年、26年和61年生兴安落叶松人工林乔木、草本及整个植被的碳储量，并采用“以时代空”的方法探讨人工林生长过程中植被碳储量的变化。结果表明，人工林植被碳储量随林龄增加而增加，61年生时达到105.69 t·hm(-2)，具有明显的碳汇作用。15至26年生的兴安落叶松人工林固碳能力最强，其中树干碳储量占乔木总碳储量的54.3% -73.9%，且随着林龄增加，树干碳储量占乔木总碳储量的比例以及树干碳密度均增加。对于其他器官，其碳储量占乔木总碳储量的比例随林龄增加而降低，其碳密度先增加，但最终趋于平稳或略有下降，直至61年生时。基于这些结果，大兴安岭兴安落叶松人工林的轮伐期应适当延长至至少60年。
