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Damage of Rhombimys opimus to Haloxylon ammodendron and the effect of different habitats on its home range selection
Author(s): ZHANG San-liang, LIU Rong-tang
Pages: 11-
14
Year: 2008
Issue:
5
Journal: GRASSLAND AND TURF
Keyword: 梭梭; 生境类型; 大沙鼠; 巢域; 选择;
Abstract: 通过在民勤县荒漠林区的调查表明,大沙鼠为害对梭梭林区新梢长有显著的影响,新梢长度大小依次为:健康植株>20%枝条受害植株>50%枝条受害植株>80%枝条受害植株;大沙鼠的洞群主要分布在固定沙丘和丘间地,流动沙丘、且大沙鼠的洞群数量在不同沙丘类型之间差异显著(P<0.05);不同地形大沙鼠的洞群数量差异显著(P<0.05),说明大沙鼠的洞群主要分布在丘间地,丘顶和背风坡大沙鼠不会选择营巢;民勤荒漠林区灌木丰富度、草本植物丰富度和盖度与大沙鼠洞群数量之间没有直接的相关关系,灌木盖度和大沙鼠洞群数量之间存在显著正相关关系,回归方程为y=0.514 3 x-3.775 7,R2=0.811 3.
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