南亚热带丘陵3种人工林群落的生物量及净初级生产力  

Biomass and net primary productivity of three plantation communities in hilly land of lower subtropical China

作　　者：曾小平[1] 蔡锡安[1] 赵平[1] 饶兴权[1] 邹碧[1] 周丽霞[1] 林永标[1] 傅声雷[1] 

机构地区：[1]中国科学院华南植物园

出　　处：《北京林业大学学报》2008年第6期148-152,共5页Journal of Beijing Forestry University

基　　金：国家自然科学基金项目(30770328);广东省自然科学基金项目(07006917);中国科学院知识创新工程重大项目(KSCX2-SW-133);华南植物园博士启动项目;中国生态系统研究网络(CERN)监测项目

摘　　要：该文采用收获法和标准木法研究了南亚热带3种人工林群落：马占相思林、针叶林（马尾松＋杉木）、木荷林（木荷＋红荷）的生物量及净初级生产力,为揭示鹤山丘陵人工林的结构功能规律及全球变化生态学的研究提供基础资料。结果表明,林分现存生物量由大到小依次为：马占相思林（176.03 t/hm2）、木荷林（122.91 t/hm2）、针叶林（104.93 t/hm2）。在林分各层次的分配比例中,乔木层所占比例最大,为95.1%~98.7%;灌木层和草本层所占比例较小,尤其是草本层,灌木层为0.9%~4.5%,草本层为0.4%。净初级生产力（NPP）由大到小依次为：马占相思林（25.32 t/（hm2.a））、木荷林（17.93 t/（hm2.a））、针叶林（15.8 t/（hm2.a））,与林分生物量大小呈同样的规律。木荷林乔木层和灌木层的生物量增量所占比例高于另外两种林分,群落结构较复杂,生物量积累呈明显的增长趋势。In this paper, the biomass and net primary productivity （NPP） of Acacia mangium plantation, coniferous plantation （Pinus massoniana ＋ Cunninghamia lanceolata ） and Schima plantation （S. superba ＋ S. wallichi ） in lower subtropical hilly land （Heshan Mountain, Guangdong, China） were estimated by means of sample tree method and harvest method. Present investigation aims at providing the basic data on the structure and function of three typical plantation communities in Heshan and global change ecology. The biomass and NPP were 176.03 t/hm2 and 25.32 t/（hm2·yr） for Acacia mangium plantation, 122.91 t/hm2 and 17.93 t/ （hm2·yr） for Schima plantation, and 104.93 t/hm2 and 15.8 t/（hm2· yr） for coniferous plantation, respectively. Arbor layer of the three plantation communities accounted for the greatest proportion of the total biomass （95.1%-98.7% ） ,while shrub and herb layers formed only a small part of the total biomass （0.9%- 4.5% and 0.4%, respectively）. Arbor and shrub layers in Schima plantation had higher proportion of biomass increment than those in the other two plantations. The results suggest that Schima plantation has a complex structure and an evident increase trend in biomass accumulation.

关 键 词：南亚热带 人工林群落 生物量 净初级生产力 

分 类 号：S718.556[农业科学—林学]