顶坛花椒生长状况及其构件种群研究  

Study on growth condition and constructive population of Zanthoxylum planispinum var. dintanensis

作　　者：王宁[1] 刘济明[1] 

机构地区：[1]贵州大学林学院,贵州贵阳550006

出　　处：《贵州林业科技》2004年第3期26-31,共6页Guizhou Forestry Science and Technology

基　　金：国家"十五"科技攻关课题 2 0 0 1BA6 0 6A- 0 9- 0 4资助项目。

摘　　要：本文研究了贵州喀斯特花江峡谷地区特有经济植物—顶坛花椒生长状况及其枝、叶构件种群 ,结果表明 :(1)顶坛花椒的树高、地径、冠幅随着树龄的增加 ,均呈现传统的“S”形增长曲线。 (2 )茎叶数在前几年迅速下降 ,5年以后变为零。第一枝高在 1～ 4年期间快速下降 ,以后基本保持稳定。 (3)各级分枝的平均分枝角度随树龄的增大而呈现不同的波动趋势 ,但总体来说略有增加。随着枝级的增加 ,平均分枝角度反而减少。 (4)各级枝平均分枝长度及平均粗度由于受枝条的萌生率和死亡率的影响而呈现不同的波动性。 (5 )在顶坛花椒的不同年龄阶段 ,约两种左右枝级的叶片面积是植株总叶面积的主要组成部分。Study on growth condition and branch and leaf constructive of Zanthoxylum planispinum var. dintanensis,which is a particular plant in Canyon Huajiang of Guizhou province. The results showed that:(1)With the increase of age, the increase of height,basic diameter and crown were a S-shape curve.(2)The number of leave in stem was fast decrease and turn to zero after the fifth year. The height of the first branch was fast decrease during 1～4 year, then retain balance.(3)With the increase of age, the average branch angle of different grades is totally increase. With the increase of branch grades, the average branch angle decreased.(4)Because of the change of germinate and death of branch, the average length and thick of different grade branch present varies fluctuate.(5)The leaf area of two different grades branch is mainly proportion of total leaf area in different age period.

关 键 词：喀斯特 花江峡谷 顶坛花椒 生长状况 构件种群 

分 类 号：Q945[生物学—植物学]