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OALib Journal期刊
ISSN: 2333-9721
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伊犁河谷北坡野果林群落结构及其与环境的关系
DOI: 10.3724/SP.J.1145.2011.00039, PP. 39-45
Keywords: 伊犁河谷,野果林,群落分布格局,环境条件,dcca
Abstract:
结合野外植被调查，在获取较为详细的生境数据基础上，探讨伊犁河谷北坡野果林群落与环境因子之间的定量关系.twinspan和去趋势典范对应分析（dcca）的结果表明：1）在伊犁河谷北坡野果林群落分布地段，地形因子、养分和水分条件是群落生境的基本因子；2）海拔因子指示出研究区野果林群落最基本的分化，说明海拔条件是制约研究区植物群落分布的最重要的因子；3）土壤表层水分状况与海拔关系较密切，反映了草本层群落所受到的水分条件影响；4）养分状况的差异，除了说明生境条件本身的差异外，也在一定程度上指示了群落现在生境的养分状况，受人为的影响较大.总之，在山地复杂的地形条件下，群落生境条件的差异非常显著，海拔、土壤含水率、全氮、坡向和ph值的组合，影响并控制着研究区各群落分布格局的形成.图2表4参25
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