桉树薪炭林混交试验——Ⅱ.林分生物量和能量分配的研究  

Studies on the Mixed Fuelwood of Eucalyptus II. the Allocation of Biomass and Energy in the Stands

作　　者：黄世能[1] 郑海水[1] 何克军[1] 

机构地区：[1]中国林业科学研究院热带林业研究所

出　　处：《林业科学研究》1991年第5期545-549,共5页Forest Research

基　　金：国家攻关项目"薪炭林选种引种及栽培经营技术"研究内容之一

摘　　要：薪炭林经营与其他林种经营的区别在于寻求能量的最大产出,林分总能量的输出取决于组成树木的热值及其生物量。通过生物量和能量的研究,可以了解薪炭林分生物量和能量的积累动态,为林分的物质循环和能量流动以及林分的开发和利用提供基础资料。 中国桉树人工林面积近40万ha,遍布南方16个省(区)的600多个县,在华南地区的林业生产和人民群众的日常生活中占着非常重要的地位。但桉树纯林多代连续经营(尤其以短轮伐期连续经营)引起地力衰退,导致林分生产力下降以及其他不良的生态后果已为长期的生产实践和科学研究所证实。为此,我们自1982年始在海南岛琼海、三亚。The allocation of biomass and energy in nine different 3-year -old stands was studied in a mixed planting trial with four tree species namely Eucalyptus leizhou No. 1, E. exserta, Acacia auriculiformis and A. mear-nsii. Comparing the contribution of various components to the total biomass production among the trial stands showed that 58 %~66 % biomass production was recorded in stem-wood, and 6 %~14 %, 5 %~9 %, 13 %~16 % and 4 %~8 % biomass production was produced by branch-wood, leaves, roots and litter, respectively. Results obtained for energy content is similar to the result of biomass production. Among the nine stands studied, the mixed stand of E. leizhou No. 1 and A. auriculiformis with the mixed proportion of 1:1 by rows found to be the most productive planting system adapted for large-scale plantation management.

关 键 词：生物量 能量 热值 

分 类 号：S7[农业科学—林学]