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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。
In this paper, the community characteristics, biomass and productivity of stands were used to compare the artificial pure forests and their mixed forests with Chinese fir. The results showed that the biomass of the mixed plantation was 103.838t / hm ~ 2, which was 1.9 times of that of the pure plantation. The biomass of the understory vegetation was 1.478t / hm ~ 2, which was less than that of the pure plantation (1.995t / hm ~ 2). In pure forests and mixed forests, the proportions of biomass of all organs were as follows: trunk> root> branch> leaf. However, the stand structure of pure wood sightseeing tree is more conducive to improve its timber yield, the proportion of its trunk biomass is higher than that of mixed forest. The leaf area index of mixed forest of sightseeing wood was 5.72, and the net rate of leaf net assimilation was 787.3g / (cm ~ 2 · a), which was significantly higher than that of pure forest.