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Spatial distribution pattern of Meriones unguiculatusin in desertification grassland area in Dingbian Country, Shanxi Province
Author(s): JIA Li-jun
Pages: 23-
27,33
Year: 2013
Issue:
4
Journal: Grassland and Turf
Keyword: Meriones unguiculatusin; population distribution pattern; Dingbian County; desertification grassland;
Abstract: 通过对陕西定边县北部荒漠区域采用赌洞盗洞法调查长爪沙鼠的相对密度,结果发现:在半固定半流动沙丘中,长爪沙鼠平均相对密度为40.35有效洞口/0.25 hm2,在农田及其田边地头中为81.26有效洞口/0.25 hm2;用各概率分布理论公式求算3种分布型的理论频数(fc),并作卡方(x2)检验得:前者x2 (4.533)<x20.01(11.345),后者x2(7.2492)<20.01(12.277),证明前者非常适合核心分布,后者非常适合嵌纹分布,这是由于前者资源分布相对均匀,后者资源分布相对不均匀所致.
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