南宁七坡林场尾巨桉人工林生物量的初步研究  

A Preliminary Study on Biomass of Eucalyptusuro phylla×E.grandis Plantation in Nanning Qipo Forest Farm

作　　者：吴华静 田丰[1,2] 桂凌健 田华丽[1,2] 梁士楚[1,2] 

机构地区：[1]珍稀濒危动植物生态与环境保护教育部重点实验室,广西桂林541004 [2]广西师范大学生命科学学院,广西桂林541004

出　　处：《广西科学院学报》2014年第4期233-237,共5页Journal of Guangxi Academy of Sciences

基　　金：广西科技重大专项(2010GXNSFD169007;桂科基1123014;桂科基11166-01;桂科基11199001)资助

摘　　要：【目的】为科学、可持续地经营桉树(Eucalyptus)人工林以及评价桉树人工林在区域碳循环中的地位、作用和生态效益提供有效的依据。【方法】采用平均标准木法和收获法对南宁七坡林场的尾巨桉(Eucalyptus urophylla×E.grandis)及其林下植被的生物量进行调查。【结果】在尾巨桉人工林中,各层次生物量呈现乔木层>灌木层>草本层,其中尾巨桉生物量最大,处于主导地位;尾巨桉各器官生物量的大小顺序为树干(64.38%)>根(24.29%)>树皮(5.97%)>老枝(2.25%)>嫩枝(1.56%)>老叶(1.32%)>嫩叶(0.20%)。【结论】尾巨桉的生物量主要集中在树干上,叶的生物量最少。Objective]In order to provide effective reference for the management of Eucalyptus plantations sustainably and scientifically,and evaluate their roles,functions and ecological benefits in the regional carbon cycle.[Methods]Mean tree method and harvest method were used to study the biomass of Eucalyptus urophylla ×E.grandis plantations and their under-story vegetations in Nanning Qipo forest farm.[Results]In the plantations,the proportion of biomass in various layers was tree layer>shrub layer>herb layer,and the largest biomass was produced by Eucalyptus urophylla × E.grandis. This indicated that Eucalyptus urophylla × E.grandis tree is a dominant plant. The biomass of various organs of Eucalyptus urophylla×E.grandis were trunk(64.38%)>root(24.29%)>bark(5.97%)>old branch(2.25%)>tender branch(1.56%)>old leaf(1.32%)>tender leaf(0.20%).[Conclusion ] The biomass of Eucalyptus urophylla × E.grandis was mainly produced by trunk and litte by the leaf.

关 键 词：尾巨桉人工林林下植被 生物量 

分 类 号：S718.55[农业科学—林学]