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Study of the Biomass and Productivity of Cinnamomum camphora Plantation

YAO Ying jiu, KANG Wen xing, TIAN Da lun (Research Section of Ecology, CSFU, Zhuzhou 412006, Hunan, China)  
In the paper, the biomass and productivity of Cinnamomum camphora plantation are studied. The results show that the estimated biomass of Cinnamomum camphora plantation is 111.08 t·hm -2 ; the productivity is 6.17 t·hm -2 a -1 .The distributing sequence of the biomass of the plantation ecosystem is that tree stratum litterundergrowthherb. The total biomass of tree layer is 91.97% t·hm -2 ; its net productivity is 5.11 t·hm -2 a -1 . The distributing sequence of the organic biomass of the tree is that trunkbranchrootbarkleaf. Regarding the production structure, the biomass of trunks under the height of 5 m accounts to 80% of the total; the biomass of branches between 4 m and 11 m accounts to 86% of the total; the biomass of leaves between 8 m and 12 m accounts to 78% of the total; and the biomass of roots below the ground level of 40 cm accounts to 84.74%. The present stage structure of the community is irrational. The structure of productivity should be regulated so as to improve the integrate effects of the community.
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