高寒草地群落物种多样性与土壤环境因子的关系
Bulletin of Soil and Water Conservation(2009)
Abstract
对新疆巴音布鲁克高寒草地植物群落4个物种多样性指数和14个土壤指标进行回归分析,结果表明,全盐,HCO3-,Ca2+,速效N,pH值,土壤含水量与物种多样性有显著相关关系(P<0 05)。全盐,HCO3-,Ca2+,速效N和土壤含水量与丰富度指数的最好拟合为二项式,pH值与丰富度指数的最好拟合为直线回归,全盐,Ca2+和pH值与Shannon—Wiener指数的最好拟合为二项式,土壤含水量与Shannon—Wiener指数的最好拟合为直线回归,这表明物种多样性与土壤环境因子的关系并不是简单的正相关或负相关关系。
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Key words
alpine-cold grassland,elevation gradients,soil factor,species diversity
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