不同林龄格木人工林碳储量及其分配特征

应用生态学报

不同林龄格木人工林碳储量及其分配特征

明安刚^1,2,3,贾宏炎^1,3,田祖为^1,3,陶怡^1,3,卢立华^1,3,蔡道雄^1,3,史作民^2**,王卫霞^2

(¹中国林业科学研究院热带林业实验中心, 广西凭祥 532600; ²中国林业科学研究院森林生态环境与保护研究所, 北京 100091; ³广西友谊关森林生态系统定位观测研究站, 广西凭祥 532600)

出版日期:2014-04-18 发布日期:2014-04-18

Characteristics of carbon storage and its allocation in Erythrophleum fordii plantations with different ages.

MING An-gang^1,2,3, JIA Hong-yan^1,3, TIAN Zu-wei^1,3, TAO Yi^1,3, LU Li-hua^1,3, CAI Dao-xiong^1,3, SHI Zuo-min², WANG Wei-xia^2

(¹Experimental Center of Tropical Forestry, Chinese Academy of Forestry, Pingxiang 532600, Guangxi, China; ²Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China; ³Guangxi Youyiguan Forest Ecosystem Research Station, Pingxiang 532600, Guangxi, China)

Online:2014-04-18 Published:2014-04-18

摘要/Abstract

摘要： 在生物量调查的基础上,对广西7、29和32 a格木人工林生态系统碳储量及其分配特征进行了研究.结果表明: 格木各器官碳含量在509.0～572.4 g·kg^-1,大小顺序为:树干>树枝>树根>树皮>树叶;不同林龄间格木人工林的灌木层、草本层和凋落物层碳含量无显著差异;土壤层(0～100 cm)碳含量随土层深度的增加而降低,随林龄的增加而增大.7、29和32 a格木人工林乔木层碳储量分别为21.8、100.0和121.6 t·hm^-2,各器官碳储量大小顺序与碳含量一致;生态系统碳储量分别为132.6、220.2和242.6 t·hm^-2,乔木层和土壤层为主要碳库,占生态系统碳储量的97%以上.乔木层碳储量分配随着林龄的增加而增大,土壤碳储量分配则减小,而林龄对灌木层、草本层和凋落物层碳储量分配的影响无明显规律.

Abstract: Carbon storage and its allocation of 7-, 29- and 32-year-old Erythrophleum fordii plantation ecosystems in Guangxi were studied on the basis of biomass survey. The results showed that the carbon contents in different organs of E. fordii, ranging from 509.0 to 572.4 g·kg^-1, were in the order of stem > branch > root > bark > leaf. No significant differences in carbon content were observed among the shrub, herb and litter layers of the E. fordii plantations with different ages. Carbon content in the soil layer (0-100 cm) decreased with increasing the soil depth, but increased with increasing the stand age. The carbon storage of the arbor layer was 21.8, 100.0 and 121.6 t·hm^-2 for 7-, 29- and 32-year-old stands, respectively, and the order of carbon storage allocation in different organs was same as the order of carbon content. The 7-, 29- and 32-year-old E. fordii plantation ecosystems stored carbon at 132.6, 220.2 and 242.6 t·hm^-2, respectively. The arbor layer and soil layer were the main carbon pools, accounting for more than 97% of carbon storage in the ecosystem. Carbon storage allocation increased in arbor layer but decreased in soil layer with increasing the stand age. The influence of stand age on carbon storage allocation in shrub, herb and litter layers did not show a obvious regular pattern.

明安刚1,2,3,贾宏炎1,3,田祖为1,3,陶怡1,3,卢立华1,3,蔡道雄1,3,史作民2**,王卫霞2. 不同林龄格木人工林碳储量及其分配特征[J]. 应用生态学报.

MING An-gang1,2,3, JIA Hong-yan1,3, TIAN Zu-wei1,3, TAO Yi1,3, LU Li-hua1,3, CAI Dao-xiong1,3, SHI Zuo-min2, WANG Wei-xia2. Characteristics of carbon storage and its allocation in Erythrophleum fordii plantations with different ages.[J]. Chinese Journal of Applied Ecology.