摘要
通过对江西省14个毛竹主产区不同立地条件毛竹生物量的研究结果表明,海拔与立竹度、胸径、郁闭度和竹腔厚显著相关;竹高随土壤厚度、全N和有机质含量增加而增高,坡位与竹高、胸径和竹腔厚显著相关;在一定范围内,郁闭度随土壤有机质、全N、速效P和速效K含量增加而增加,而随海拔和土壤厚度增加而降低;竹材重量随海拔升高而减小,海拔和速效P对竹材重量影响达差异显著;有机质和全N含量与物种多样性呈正相关关系,母岩和土壤质地对物种多样性的影响差异显著;影响竹材杆壁厚大小的立地因子依次为全N、母岩和速效N,并随其含量的增大而增厚,同时方差分析表明,不同母岩和全N含量的竹材杆壁厚存在显著差异。
Study on effect of site conditions on biomass of Phyllostachys heterocycla var.pubescens in 14 bamboo production areas of Jiangxi province showed that elevation had significant relation with density,DBH,canopy density and cavity thickness.The height of bamboo increased with soil depth,total N and organic content,and slope position had close relation with bamboo height,DBH and cavity thickness.Canopy density had positive relation with organic matter,total N,rapid available P and K content,but negative relation with altitude and soil depth.Culm weight decreased with the increase of altitude.Altitude and rapid available P had significant effect on culm weight.Species diversity in the bamboo forest had positive correlation with organic matter and total N content.Mother rock and soil texture also had evident influence on species diversity.Total N,mother rock and rapid available N had positive effect on bamboo wall thickness.
出处
《浙江林业科技》
北大核心
2008年第4期22-27,共6页
Journal of Zhejiang Forestry Science and Technology
基金
江西省科技厅农业重点攻关项目(No.2001101002)
关键词
毛竹
立地条件
生物量
竹材结构
Phyllostachys heterocycla var.pubescens
site condition
biomass
structure of bamboo culm
