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本文研究了黑石顶自然保护区南亚热带常绿阔叶林的生物量增量及其分配规律,净第一性生产量及其分配规律.生物量增量为10.680t·hm~(-2)·a~(-1),其中干6.127(57.37％),枝2.195(20.55％),叶0.514(4.81％),根1.844(17.27％)。乔木层8.786(82.27％),灌木层1.679(15.72％),草本层0.215(2.01％).生物量增量的垂直分布以20—25m的林冠层比例最高,其次是10—15m的乔木层第二亚层.生物量增量的径级分布近于正态分布。 净第一性生产量为29.612t·hm~(-2)·a~(-1),其中干8.181(27.63％),枝3.403(11.49％),叶4.281(14.46％),根13.165(44.46％),花果0.582(1.97％)。细根(D≤3mm)生产量占根系生产量的81％,根系生产量约占净第一性生产量的45％。传统假定的根系生产量占森林生产量的15％—25％可能是太低的估计.森林的生产效率为1.897t·t_叶~(-1)或1.733t·hm_叶~(-2)各器官的生产效率有如下顺序:细根>叶>根(包括细根)>枝>干。EVI法用于该森林树干生物量增量的估计,得到较低的值(约低27％).
In this paper, the increment and distribution of biomass, the net primary production and their distribution of biomass in the evergreen broad-leaved forest in the southern subtropical region of Heishiding Natural Reserve were studied. The biomass increment was 10.680 t · hm -2, · A ~ (-1), which was 6.127 (57.37%), 2.195 (20.55%), 0.514 (4.81%) and 1.844 (17.27%). The arbor layer was 8.786 (82.27%), the shrub layer was 1.679 (15.72%), and the herb layer was 0.215 (2.01%). The vertical distribution of biomass increment was highest in 20-25m canopy layer, followed by 10-15m arbor layer Sub-layer.The biomass distribution of diameter-diameter distribution is near normal distribution. The net primary production was 29.612 t · hm -2 · a -1, of which 8.181 (27.63%), 3.403 (11.49%), 4.281 (14.46%) and 13.165 (44.46 %), Flower fruit 0.582 (1.97%). Fine root (D ≤ 3mm) production accounted for 81% of root production, root production accounted for about 45% of net primary production. Traditionally, root production may account for a low estimate of 15-25% of forest production. The forest production efficiency is 1.897 t · t_ leaf -1 or 1.733 t · hm_ leaf -2 The production efficiency of each organ has the following order: fine root> leaf> root (including fine root)> branch> dry. The EVI method was used to estimate biomass increment in the trunk of the forest, resulting in lower values (about 27% lower).