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- Annual mean dry weight and volume production in arbor layer were 1.397t/ha. 林分乔木层干物质和材积年平均净生产量为1.;397t/ha
- Arbor layer is principal part of community biomass; it is 91% in brush forest and 99% in sedge forest. 乔木层生物量构成了群落生物量的主体,其中灌木落叶松林的乔木层生物量占到总生物量的91%25左右,而苔草落叶松林占到99%25左右。
- The tree layer can be easily divided into three sublayers in terms of height. 长序榆更新严重受阻，种群明显处于衰退期；
- The above-ground biomass of arbor layer amounted to 54.826 t/ha, and mean annual production amounted to 10.229t/ha. 9年生萌生林乔木层地上部分生物量为54.;826t/ha;年平均净生产量为10
- The community has an outstanding dominant species and the arborous layer possesses a comparatively high diversity index. 群落的优势种显著，乔木层的物种多样性指数较高，各样地间的植物种类具有一定的相似性。
- It showed that the biomass of arbor layer and shrub-herbaceous layer from the interblending trees was lower than single-species wood respectively. 结果表明：混交林中乔木层生物量小于侧柏纯林和油松纯林的生物量；
- Standing crop of 18-year-old Pinus tabulaeformis plantation in Wei-bei region was 7l. 410t/ha, in which the biomass of arbor layer amounted to 67.124 t/ha. 渭北地区18年生油松林生物量为71.;410t/ha;其中乔木层生物量为67
- Therefore, the carbon stocks are ordered: soil (0-100 cm) > tree layer > shrub > herb > litter > duff. 云杉林的碳库分布序列为土壤(0~100cm)>乔木层>灌木层>草本层>枯落物层>地被物层。 云杉天然林分平均净生产总量为6838.;5kg
- The dominant species in arbor layer are Castanopsis eyrei, Schima superba, Castanopsis fissa, Castanopsis hystrix, Choerospondias axillaries, and Castanopsis lamontii. 植被优势种主要为甜椎、木荷、黛蒴、红椎、酸枣和青栲等。
- There was no significant difference of diversity index between the tree layer and the shrub layer. 乔木层与灌木层之间多样性各项指标总体无显著差别。
- Species number ranked in the following order: brush and herb layer > tree layer > litter layer > soil layer. 每样地的物种数量都是以灌木草本层最多，依次为乔木层、枯枝落叶层和土壤层。
- The species in tree layer mainly are plants of Fagaceae, Lauraceae and camelliaceae which are evergreen. 植被组成中，乔木层以壳斗科、樟科、山茶科等常绿树种为主；
- Generally, the order of the magnitude of species diversity was: shrub layer>tree layer>herb layer. 总体来看,栲属群落物种多样性在群落不同层次的变化规律为:灌木层>乔木层>草本层;
- The vertical structure of Heptacodium miconioides is rather complicated.It can be divided into arborous layer,shrub layer,herbaceous layer and interstratum plants which are numerous in quantity. 七子花群落垂直结构较复杂，可分为乔木层、灌木层、草本层，亦有数量较多的层间植物。
- The community has an outstanding dominant species and the arborous layer possesses a comparatively high diversity index.The similarity is rather striking among different quadrats species. 在浙江省天台山主峰华顶山北侧的狮子岩坑处，沿山沟两侧呈带状分布的有一片以七子花为优势的群落，实为罕见。
- The accumulation of ten nutrient ele-ments of RA system at tree layer was 2214. 22 kg/hm2, which was 1. 46 times of PP system. 乔木层10种营养元素的积累量胶砂间作林为2214.;22kg/hm2，纯胶林为1511
- The complicated vertical structure could be divided into tree layer, shrub layer and herb layer, as well as a definite number of interstratum plants. 群落垂直结构复杂,可分为乔木层、灌木层和草本层,并有一定数量的层间植物。
- The average biomass of these stands amounts to 41.456 t/ha,in which the biomass of arbor layer litterfall and undergrowth were 32.799, 7.247 and 1.41Qt/ha or 79.1,17.5 and 3.4% of the total stands, respectively . 其中乔木层、林下植物层和枯枝落叶层的生物量分别是32.;799、1
- The species diversity index of the tree layer was a bit low, and the general trend was shrub layer > treelayer > herb layer. 乔木层物种多样性指数偏低,垂直结构各层次间物种多样性大小依次为灌木层>乔木层>草本层。
- The biomasses of arbor layer account for 95.6%, 97.35%, 97.62%, 96.53%, 98.28% and 98.78% of their total community biomass. These results showedan increasing trend of biomass according to different stand ages. 乔木层生物量占群落总生物量的比例从10龄至65龄林间呈不断增加的趋势，分别为95.;6%25，97
