工艺利用紫竹林分生长的立地条件研究

通过对云南省大河镇工艺利用紫竹林分立地条件进行调查分析研究,结果表明:(1)工艺利用紫竹林分的立竹度在不同的坡向表现出从阳坡向阴坡逐渐增大趋势,枝下高和高度较大的主要集中在半阳和半阴两个坡向;(2)工艺利用紫竹林分随着土层厚度的增加,立竹度呈减少的趋势,而紫竹的立竹度、平均胸径和枝下高从沙、轻、中壤和重壤的不同土壤质地表现出逐渐增大的趋势;(3)在四旁地栽植工艺利用紫竹林的立竹度、平均胸径、枝下高和分株全高都大于林地植株。

A Study on Site Condition of Phyllostachys nigra Stand of Technology Utilization

The site condition of Phyllostachys nigra stand of technology utilization was investigated and studied in Dahe Township, Yunnan Province. The results were as follows: (1) The living bamboo density of Ph. nigra of technology utilization tended to increase from sunny slope to shady slope in different slope aspects. The bigger branching height and height mainly located on the semi-sunny and semi-shady slope aspect;(2) The living bam- boo density of Ph. nigra stand of technology utilization tended to decrease with the increasing of soil depth, and the living bamboo density, average DBH and branching height tended to increase in different soils from sandy soils, light loam, medium loam and weight loam;(3) Ph. nigra stand of technology utilization established along village, rivers, roads and farmland were higher in living bamboo density, average DBH, branching height and full height of ramet than those established on forest land.