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草业科学  2015 

甘南夏河高寒草甸高原鼢鼠和高原鼠兔秋季栖息地特征

DOI: 10.11829\j.issn.1001-0629.2015-0028, PP. 1675-1681

Keywords: 高寒草甸,啮齿动物,栖息地,植被特征,地形因子

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Abstract:

?2010年至2014年连续5年对甘南夏河高寒草甸高原鼢鼠(Eospalaxbailyei)和高原鼠兔(Ochotonacurzoniae)的分布与其地形、植被因子等进行了调查,分析两小型哺乳动物秋季越冬前的栖息地利用特征。结果表明,其秋季栖息地利用与地形和植被特征显著相关。高原鼠兔易选择坡地、半阳坡和坡中位的地形,而高原鼢鼠易选择平地、阳坡和坡底位的地形;植被盖度是影响高原鼠兔分布的重要因子。地上生物量非中等的平地是两小哺乳动物共存的主要分布地,两小型哺乳动物的种群动态与植被盖度和生物量均显著相关(P<0.05);鹅绒委陵菜(Potentillaanserina)、花苜蓿(Melissilusruthenicus)、柴胡(Radixbupleuri)和美丽风毛菊(Saussureapulchra)4种植物多度与两小型哺乳动物的分布显著相关。

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