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冀北山区森林群落草本多样性及其与地形关系研究

标题: 冀北山区森林群落草本多样性及其与地形关系研究
英文标题: Herbaceous diversity and the relationship with terrain in forest communities in northern Hebei mountain
作者: 曹云生,杨新兵,张伟,宋庆丰,张建华
出版时间: 2010-01-01
机构: 河北农业大学
关键词: 冀北山区,草本植物,地形,典范对应分析(CCA)
英文关键词: northern hebei mountain,herbs,terrain,Canonical Correspondence Analysis(CCA)
刊名: 生态环境学报
英文刊名: Ecology and Environmental Sciences
ISSN: 1674-5906
卷号: 012
基金: ^A公益性行业科研专项经费^B200804022F^D1
页码: 2840-2844
分类号: Q948
摘要: 通过野外调查取样,应用Menhinick丰富度指数、Simpson指数、Shannon-Wiener指数和Pielou均匀度指数研究了冀北山区12种典型森林群落内的草本植物多样性规律,并采用典范对应分析(CCA)方法研究其分布与地形的关系.结果表明:不同的群落类型草本植物的组成和多样性指数不同,山杨(Populus davidiana)纯林的种数最多为34种,黑桦(Betula dahurica Pall)纯林的种数最少为19种,其Simpson指数、Shannon-Wiener指数最高,分别为0.927 3和2.879 6;在1 200~1 700 m之间,随海拔升高物种多样性指数、均匀度指数和丰富度指数呈正相关性,但没有线性上升的趋势关系;选取的地形因子对样点草本的影响程度大小为:坡向>海拔>坡度>坡位>坡形,坡向是样点草本植物空间差异的最主要地形制约因子,环境解释率为98.7%,证明排序可信.
英文摘要: This research studied the relationships between species diversity and the community types,terrain factors and community structure,were studied using the richness indices,diversity indices and evenness indices,through field investigation in 12 types of forest community in northern hebei mountain.The relationship of herb and terrain were studied using the canonical correspondence analysis.Result show that: Although the different community types of the composition and distribution of different herbs,but the di...