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通过对华中神农架海拔1500米至2600米之间11个箭竹样方的研究,阐述了箭竹群落物种丰富度,物种多样性,物种均匀性,生活型谱及群落类型的海拔变化。从最低样方(1680米)到最高样地(2570米),微管束植物从30种降为7种,服从线性模型:Y=55.991.83X(R2=0.84,P<0.001);物种多样性从3.18降为1.78,服从线性模型:Y=4.670.10X (R2=0.72,P=0.001;物种均匀度在0.83至0.99之间变化,但与海拔并不相关。在生活型谱中,一年生植物,地下芽植物和大高位芽树木的百分比随海拔升高而升高;灌木和中高位芽树木随海拔升高而降低;多年生草本和半灌木与海拔关系不大。箭竹群落可分为5种类型:常绿阔叶林下,落叶阔叶林下,温性针叶林下,寒温性针叶林与混交林下,纯箭竹林。图4表2参19。
Based on the investigation of 11 arrow-bamboo quadrats from Shennongjia at an altitude of 1,500 to 2,600 m in Central China, the change of elevations in species richness, species diversity, species homogeneity, life forms and community types of Phalaris arundinata community was described. From the lowest sampling point (1680 m) to the highest sampling point (2570 m), the number of microtubule plants decreased from 30 to 7, which obeyed the linear model: Y = 55.991.83X (R2 = 0.84, P <0.001) From 3.18 to 1.78, subject to a linear model: Y = 4.670.10X (R2 = 0.72, P = 0.001; Species evenness varied from 0.83 to 0.99, but not altitude.) In life spectrum, annual plants , The percentage of the underground bud plants and the big buds increased with the elevation increasing.The shrubs and the middle and high bud shoots decreased with the altitude increasing.The perennial herbs and the semi-shrubs had little correlation with the altitude.The bamboo communities could be divided into five kinds Types: under evergreen broad-leaved forest, deciduous broad-leaved forest, under temperate coniferous forest, temperate coniferous forest and mixed forest, pure-armed bamboo forest.