杉木生态系统生物量与固碳能力的分析与评价  

The analysis and assessment on the biomass and carbon sequestration of Chinese fir plantation ecosystem

作　　者：汪家社 

机构地区：[1]福建武夷山国家级自然保护区管理局,福建武夷山354300

出　　处：《福建林业科技》2008年第2期1-4,29,共5页Journal of Fujian Forestry Science and Technology

基　　金：CIDA"中国森林碳汇"资助项目;国家自然科学基金资助项目(30370256)

摘　　要：杉木(Cunninghamia lanceolata)是我国特有的优良速生针叶树种,分布地域广阔,在碳循环及维护生态系统平衡等方面发挥着非常重要的作用。本文通过分析大量文献,讨论了立地条件、分布区域和经营方式等因素对杉木林生态系统生物量和生产力的影响。根据文献资料对杉木林生态系统生物量和固碳能力进行了初步估测。结果表明:①中国杉木林生态系统平均生物量约为36.516 t.hm-2,平均生产力约为8.412 t.hm-2.a-1。杉木林生产力的最大值在杉木中心分布区的中亚热带,尤以中亚热带南部亚地带的最高,其生产力平均达13.50 t.hm-2.a-1;中亚热带北部亚地带平均为11.95 t.hm-2.a-1;南亚热带和北亚热带分别是8.83 t.hm-2.a-1和5.54 t.hm-2.a-1;北热带地区杉木林的生物生产力最低,平均为5.02t.hm-2.a-1。②1994年以前的统计数据,中国杉木林生态系统的总植物碳储量为:幼龄林9.98×106t,中龄林31.61×106t,近熟林11.73×106t,成熟林7.50×106t,过熟林2.87×106t,总计为63.69×106t。③目前,中国杉木林面积达1 239.1×104hm2,蓄积量为47 357.33×104m3,换算成生物量约为18 938.20×104t,总固碳量约为5 211.65×104t.a-1。目前,杉木林生态系统的碳储量的估算没有包括土壤以及凋落物层的碳含量,因此,所估算的杉木林固碳能力和总的碳储量可能偏低。The Chinese fir （ Cunninghamia lanceolata ） is a special and fast-growing coniferous tree which distributes in vast region in China. It is not only one of the most worthy tree species for wood-use, but also plays a very important role in carbon cycle. Based on reviewing a lot of references, we discussed the impaction of site conditions, distribution regions and management patterns in the biomass and productivity of Chinese fir plantations. According to the literatures, the biomass and carbon sequestration of Chinese fir plantation ecosystem were estimated also. The results showed： ①The average biomass of Chinese fir ecosystem was about 36. 516 t· hm^-2 the average productivity is about 8. 412 t·hm^-2·a^-1. ② Based on the data before 1994, the total carbon of the Chinese fir ecosystem was 63.69 × 10^6 t, in which 9.98 × 10^6 t in the young forest, 31.61 × 10^6 t in the middle aged forest, 11.73 × 10^6 t in premature forest, 7.50 × 10^6 t in the mature forest, 2.87 × 10^6 t in the over-mature forest, respectively. ③ Currently, the area of Chinese fir in China was up to 1 239.1 × 10^4 hm^2, total volume was about 47 357.33 × 10^4 m^3, the biomass was about 18 938.20× 10^4 t, the total fixing up carbon was about 5 211.65 ×10^4t·a^-1.

关 键 词：杉木 生物量 生产力 经营措施 固碳能力 

分 类 号：S791.27[农业科学—林木遗传育种]