| 广东石坑崆森林群落优势种群生态位宽度沿海拔梯度的变化 |
| |
| 引用本文： | 张璐,苏志尧,陈北光,李镇魁.广东石坑崆森林群落优势种群生态位宽度沿海拔梯度的变化[J].林业科学研究,2007,20(5):598-603. |
| |
| 作者姓名： | 张璐 苏志尧 陈北光 李镇魁 |
| |
| 作者单位： | 华南农业大学林学院,广东,广州,510642;华南农业大学林学院,广东,广州,510642;华南农业大学林学院,广东,广州,510642;华南农业大学林学院,广东,广州,510642 |
| |
| 摘 要： | 在石坑崆从海拔300 m到海拔1 900 m的范围内,海拔每升高100 m设置一条水平样带,共计调查了17条样带,样地面积20 400 m2.运用典范对应分析(CCA)和方差分析研究森林群落优势种群生态位随海拔梯度的变化.结果表明:(1)石坑崆森林群落优势种群皆表现出在腐殖质层厚度这一资源位上的生态位宽度最大,在坡度资源位上的生态位宽度最小的趋势;(2)单因素方差分析和Tukey's HSD多重比较进一步表明,常绿阔叶林优势种群5个资源位上的生态位宽度不存在显著差异(P＞ 0.05),而针阔混交林和山地阔叶矮林的生态位宽度则存在显著差异(P＜ 0.001);(3)优势种群生态位宽度的典范对应分析表明,坡向和枯枝落叶层厚度与石坑崆森林群落第一和第二排序轴的相关性较强,不同优势种群的生态位宽度在不同资源位上表现不一.典范对应分析与生态位宽度结合能较好地反映石坑崆森林群落优势种群生态位宽度与环境因子的关系.
|
| 关 键 词： | 生态位宽度 典范对应分析 海拔梯度 森林群落 南岭国家级自然保护区 |
| 文章编号： | 1001-1498（2007）05-0598-06 |
| 收稿时间： | 2006-12-26 |
| 修稿时间： | 2006年12月26 |
Variations in N iche Breadth of Dominant Plant Populations along anAltitudinalGradient in Shikengkong of Guangdong Province |
| |
| ZHANG Lu,SU Zhi-yao,CHEN Bei-guang and LI Zhen-kui.Variations in N iche Breadth of Dominant Plant Populations along anAltitudinalGradient in Shikengkong of Guangdong Province[J].Forest Research,2007,20(5):598-603. |
| |
| Authors: | ZHANG Lu SU Zhi-yao CHEN Bei-guang and LI Zhen-kui |
| |
| Institution: | College of Forestry, South China Agricultural University, Guangzhou 510642,Guangdong,China |
| |
| Abstract: | A horizonta l transect ( 10 m × 120m ) w as placed at 100m a lt itudina l interval from an elevat ion o f 300mto 1 900m a. s. .lin Shikengkong. Canon ical CorrespondenceA na lysis ( CCA ) and One-way ANOVA w ere used todetect a ltitudina l patterns of niche and its env ironmental corre lates. The results w ere as fo llow s: 1) Dom inant plantpopu lations had the biggest n iche breadth w ith th ickness o f humus layer as the resource state, w hich had the sma l-lest n iche breadth w ith slope as the resource state in Shikengkong; 2) One-w ay ANOVA and Tukey?? sHSD show edniche breadth of dom inant popu lations d id not change sign if icantly in the evergreen broad-leaved fo rest (P > 0. 05) ,w hile niche breadth of dom inant popu lat ions in the coniferous and broad-leavedm ixed forest and themontane broad-leaved and elfin forest change sign if icantly (P < 0. 001); 3) Canonical Correspondence Analysis ind icated that as-pect and litterfallw ere correlated w ith CCA axes 1 and axes 2. Dom inant popu lations had d ifferent niche breadth asdifferent resource states. Compared w ith n iche breadth, CCA could ind icate niche and its env ironmen tal corre latesin Sh ikengkong. |
| |
| Keywords: | niche breadth Canonical Correspondence Analysis altitudinal gradient forest community NanlingNational Nature Reserve |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《林业科学研究》浏览原始摘要信息 |
| 点击此处可从《林业科学研究》下载免费的PDF全文 |
|
