摘要
通过对灌丛化草原中火烧和未烧样地内环境因子的测定和多元总体的假设检验,比较了两个样地内不同样方组间的特异性和各变量差异程度.结果表明山杏高度和数量、贝加尔针茅密度、大油芒密度、兴安胡枝子高度、火绒草高度和植被盖度这7个因子属于栗斑腹巢址选择的重要因素.火烧不仅清除了枯草及其中的食物,而且减弱或破坏了这些因素对栗斑腹巢址选择的作用,从而给其繁殖带来灾难性的破坏.
The environmental factors were measured in two study sites(one bad experienced fire while the other not)in grassland,and a comparison was made for the discrepancy between different quadrat groups within the two study sites.The results showed:such 7 environmental factors as height and number of Prunus sibirica,density of Stipa baicalensis,density of Spodiopogon sibiyicus,height of Lespedeza davurica,height of Leontpodium leontopodiodes and vegetaiton coverage were the main factors that influenced the habitat selection for reproduction of Embreriza jankowskii Taczanovski.Fire not only eliminate dead grass and foods,but also directly destroy the above-mentioned factors,which brought forth devasating effects of the reproduction of Embreriza jankowskii Taczanovski.
出处
《东北师大学报（自然科学版）》
CAS
CSCD
北大核心
2003年第1期60-65,共6页
Journal of Northeast Normal University(Natural Science Edition)
基金
国家自然科学基金资助项目(39870117)
