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通过对四川西部高山林区,海拔2900m的28年生云杉(picea balfouriana)人工林分乔木层生物量和生产力的测定和研究,建立了估测乔木层单株林木各器官生物量的回归方程。林分乔木层生物量为107.818T/ha,各器官生物量大小排序为干材>树枝>根系>针叶>树皮;年平均净生产量为7558.0kg/ha·a,净同化率为52.1g/m~2·a,各器官净生产力和净同化率排序为针叶>干材>树枝>根系>树皮;每公顷叶面积144563m~2,叶面积指数为14.5m~2/m~2。同时还讨论了林分乔木层产量的径级分布结构和垂直结构。
Based on the measurement and study on arbor layer biomass and productivity of the 28 year - old Picea balfouriana plantation in the western part of the mountainous area of Sichuan Province, the regression equation for estimating the biomass of individual plantation trees was established. The biomass of the arbor layer was 107.818T / ha, and the order of the biomass of the organs was dry material> tree branch> root system> needle> bark; the annual average net production was 7558.0kg / ha · a and the net assimilation rate was 52.1 g / m ~ 2 · a, and the order of net productivity and net assimilation rate of organs was conifer> stem> branch> root> bark; leaf area per hectare was 144563m ~ 2, leaf area index was 14.5m ~ 2 / 2. The size distribution structure and vertical structure of the arbor layer were also discussed.