[1]袁继池,邱军,蔡京勇,等.红椿天然群落α多样性与环境因子的关系[J].森林与环境学报,2017,37(01):16-21.[doi:10.13324/j.cnki.jfcf.2017.01.003]
 YUAN Jichi,QIU Jun,CAI Jingyong,et al.Analysis of α diversity and the related environmental factors of natural Toona ciliata communities in Jianshi[J].,2017,37(01):16-21.[doi:10.13324/j.cnki.jfcf.2017.01.003]
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红椿天然群落α多样性与环境因子的关系()
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《森林与环境学报》[ISSN:2096-0018/CN:35-1327/S]

卷:
37
期数:
2017年01期
页码:
16-21
栏目:
出版日期:
2017-01-15

文章信息/Info

Title:
Analysis of α diversity and the related environmental factors of natural Toona ciliata communities in Jianshi
作者:
袁继池1 邱军2 蔡京勇1 黄芳1 黄金伟2 汪洋1
1. 湖北生态工程职业技术学院, 湖北 武汉 430200;
2. 建始县林业局, 湖北 建始 445300
Author(s):
YUAN Jichi1 QIU Jun2 CAI Jingyong1 HUANG Fang1 HUANG Jinwei2 WANG Yang1
1. Hubei Vocational College of Ecological Engineering, Wuhan, Hubei 430200, China;
2. Jianshi Forestry Administration, Jianshi, Hubei 445300, China
关键词:
红椿天然群落α多样性环境因子典范相关
Keywords:
Toona ciliata Roemnatural communityα diversityenvironmental factorcanonical correlation
分类号:
Q948
DOI:
10.13324/j.cnki.jfcf.2017.01.003
摘要:
对湖北省建始县红椿天然群落进行了系统调查取样,研究该地4个红椿天然群落乔灌草层α多样性特征及其与地形、土壤之间的关系。结果表明:4个群落Margalef丰富度、Shannon指数、Simpson优势度与Pielou均匀度指数趋势均呈现草本 > 乔木 > 灌木的规律。群落T3灌木层4个多样性指数均最低,可能与坡向系数、郁闭度、乔草层多样性和丰富度相关。Shannon指数、地形、土壤物理因子典范相关分析结果表明:土壤含水量和毛管孔隙度与乔木层Shannon指数正相关,与草本层Shannon指数负相关。坡度指数与土壤容重正相关,与土壤含水量和乔木层多样性负相关;坡向指数与土壤容重负相关;坡位与其他因子相关性不显著,但影响着土壤含水量和毛管孔隙度;乔木层与草本层、灌木层Shannon指数负相关。红椿天然群落土壤物理因子、地形和Shannon指数三者间两两之间相关性很高,且组间相互影响较大。光资源通过地形的改变,影响土壤养分和群落各群层的多样性。
Abstract:
A systematic survey and samples were conducted of 4 natural Toona ciliata Roem. communities in Jianshi region, Hubei Pronvince, to research α diversity dynamics of arbor, shrub and herb layer and the relationships amomg α diversity, topography and soil physical factors. The Margalef richness index, Shannon index, Simpson dominance index and Pielou evenness index of the 4 T. ciliata communities demonstrated approximate tendency:herb > arbor > shrub. In the T3 community, 4 α diversity indices of all shrub layer were the lowest value which may relate to the exposure coefficient, canopy density, and the diversity index of arbor and herb. The canonical correlation analyses of Shannon index, topography coefficient and soil physical factors revealed that the soil moisture content and capillary porosity had positive correlations with the Shannon index of arbor, but negative with that of herb; the gradient coefficient had a positive correlation with the volume weight of soil, and meanwhile, a negative with the soil water content and the Shannon index of arbor; the slope exposure coefficient correlated negatively with the volume weight of soil; plant positions on slopes had insignificant correlations with other factors, but the Shannon index of arbor correlated negatively with those of shrubs and herb. The conclusion can be inducted that the soil physical factors, topogrphy factors and Shannon index of the 4 natural T. ciliata commmunities exhibited high correlations and profound interactions between each other. Light, as a resource, had a sutble effect upon soil nutrients and various layers’ α diversity indices of the 4 T. ciliata communities through the change of topograpohy.

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备注/Memo

备注/Memo:
收稿日期:2015-12-08;改回日期:2016-03-20。
基金项目:湖北省科技厅公益性研究项目(402012DBA40001)
作者简介:袁继池(1963-),男,教授,从事森林培育研究。
通讯作者:汪洋(1968-),男,副教授,从事生态学、植物种质资源学研究。E-mail:13296698026@163.com。
更新日期/Last Update: 1900-01-01