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OALib Journal期刊
ISSN: 2333-9721
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大兴安岭火烧迹地土壤动物的群落多样性
DOI: 10.3724/SP.J.1145.2009.00672, PP. 672-676
Keywords: 大兴安岭,森林火,火烧迹地,土壤动物,群落多样性
Abstract:
以大兴安岭地区不同年份火烧迹地土壤动物为研究对象，对火烧后不同恢复时间土壤动物群落多样性及相关指数的变化进行分析.结果表明，大型土壤动物的个体数、dic指数、丰富度指数及优势度指数变化趋势均表现为火烧恢复初期迅速增加，然后缓慢增加并逐渐接近对比样地值；如果不考虑8a迹地数据极大值的影响，中小型土壤动物的个体数、dic指数、丰富度指数及优势度指数也大致呈现火烧恢复初期迅速增加，然后缓慢增长的趋势；在垂直方向上，大型土壤动物dic指数、个体数及丰富度指数在0~5cm最大，向上、向下减少，而中小型土壤动物的各项指数都是凋落物层最大，向下迅速减小；相关分析表明，大型和中小型土壤动物的个体数和丰富度指数与dic指数都具有极高的相关性；群落相似性分析显示，各火烧迹地间土壤动物群落具有较高的相似性.图1表3参26
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