摘要
海拔梯度是影响植物生长的重要因素。为了解海拔对毛竹生长和竹林结构的影响,对江西省贵溪2个海拔的毛竹林年龄结构、整齐度和均匀度等生长情况进行调查。结果表明:海拔对毛竹生长具有一定影响,对竹高影响显著。低海拔和高海拔毛竹平均胸径分别为10.84,10.99cm;平均竹高分别为13.53,12.35m;立竹度分别为2 525.00,2 829.27株/hm2;海拔改变了毛竹林年龄结构,并对各龄竹胸径和竹高生长产生了影响。海拔对竹林整齐度和均匀度影响显著,随着海拔升高,整齐度和均匀度增加。毛竹生长和竹林结构在海拔上产生了分异,主要受气候、地形和人为因素的影响。
Altitude gradient has a great effect on plant growth. In order to understand effect of altitude on Phyllostachys edulis growth and its forest structure,growth situations,including diameter at breast height （DBH）,bamboo height and stand density of P. edulis were surveyed and age structure,uniform degree and even degree were analyzed on the two altitude gradients. The results showed that altitude had a certain effect on bamboo growth,but only significantly on bamboo height. Average DBH at low altitude and high altitude was 10. 84 and 10. 99cm;bamboo average height was 13. 53 and 12. 35m;stand density was 2 525. 00 and 2 829. 27 tree/hm^2. Altitude changed age structure of bamboo forest,and also affected DBH and bamboo height of different ages. Meanwhile altitude had significant impact on uniform degree and even degree,with altitude increase the two degrees both increased. Based on the above,bamboo growth and forest structure were different along altitude gradient,mainly by affected climate,topography and human factors.
出处
《林业资源管理》
北大核心
2016年第4期96-100,共5页
Forest Resources Management
基金
新疆维吾尔自治区高校科研计划科学研究重点项目(XJEDU2013I16)
中国博士后科学基金项目(2015M572668XB)
关键词
海拔
生长
年龄结构
整齐度
均匀度
altitude
growth
age structure
uniform degree
even degree
