观光木及其混交林生态系统生物量和生产力研究  

Study on Biomass and Productivity of the Pure Stand and Mixtures of Tsoongiodendron odorum

作　　者：刘春华[1] 张春能[1] 郑燕明[1] 

机构地区：[1]福建林学院莘口教学林场

出　　处：《福建林学院学报》1993年第3期267-272,共6页Journal of Fujian College of Forestry

摘　　要：本文从林分的群落特征、生物量及生产力等方面对观光木人工纯林及其与杉木混交林进行对比研究。结果表明:观光木混交林生物量为103.838t/hm^2,是观光木纯林的1.9倍;其林下植被生物量1.478t/hm^2,小于观光木纯林(1.995t/hm^2)。在纯林和混交林中,各器官生物量所占的比例均为:树干>根>枝>叶。但观光木纯林的林分结构更有利于提高其出材率,其树干生物量的比例高于混交林。观光木混交林叶面积指数为5.72,叶净同化率为787.3g/(cm^2·a),明显高于纯林,从而使得观光木混交林表现出比纯林更高的生产力。A comparative study was made on community characteristic, biom-ass and productivity between the pure stand of Tsoongiodendron odorum and its mixtures. The results show that the biomasses of the pure stand and mixtures are 103.838t/hm3.,55.03t/hm2.respectively; that the vegetation biom-asses of the pure stand and the mixtures are 1. 478t/hm2., 1.995t/hm2.respectively; and that the proportions of biomass distribution on their organs of both the pure stand and the mixtures are in the order of stem's>root's>bran-ch's>leaf's, but the fact that the proportion of biomass distribution on stem of the pure stand is more rational than that of the mixtures enables the pure stand to increase more outturn than the mixtures. Furthermore, the LIA and net production of the mixtures are 5.72, 787.3g/cm2.y respectively, which are both higher than that of the pure stand. As a result, the mixtures possess a stronger productivity than the pure stand.

关 键 词：观光木 生态系统 生物量 混交林 

分 类 号：S792.990.5[农业科学—林木遗传育种]