云南省思茅松林群落数量分类及物种多样性与自然环境的关系

被引:33
作者
李帅锋 [1 ,2 ]
苏建荣 [1 ,2 ]
刘万德 [1 ,2 ]
郎学东 [1 ,2 ]
张志钧 [1 ,2 ]
苏磊 [1 ,2 ]
杨华景 [3 ]
机构
[1] 中国林业科学研究院资源昆虫研究所
[2] 国家林业局普洱森林生态系统定位研究站
[3] 云南省普洱市林业科学研究所
关键词
双向指示种分析; 冗余分析; 主成分分析; 广义可加模型; 物种丰富度; 群落类型;
D O I
10.13292/j.1000-4890.2013.0484
中图分类号
Q948 [植物生态学和植物地理学];
学科分类号
071301 [植物生态学];
摘要
通过对云南省中南部和西南部9个县天然分布的思茅松林群落的调查,应用双向指示种分析(TWINSPAN)对群落进行数量分类,采用主成分分析(PCA)、冗余分析(RDA)和广义可加模型(GAM)等方法对群落类型进行排序,分析群落类型、物种分布及物种多样性与环境因子的关系。结果表明:(1)研究区域的思茅松林可分为8个主要群落。(2)对群落和物种分布产生显著影响的主导因子是海拔,其次是年均气温、年均降雨量和坡度。RDA的排序轴反映思茅松林群落物种尤其是优势物种分布随海拔、年均气温、年均降雨量和坡度的变化而变化,思茅松的分布与海拔和年均降雨量有显著的负相关,与年均气温和坡度有显著正相关。(3)GAM拟合结果显示,海拔和年均降雨量对物种丰富度的影响达极显著水平(P<0.001)。
引用
收藏
页码:3152 / 3159
页数:8
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