甘肃河西小型哺乳动物物种多样性与水热分布的关系

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摘要

野外调查、文献和标本资料收集相结合,采用因子分析法,分析了甘肃河西地区小型哺乳动物物种多样性分布格局与水热条件空间分布的关系.结果表明:物种丰富度与年降水量呈正相关关系,而与最热月(7月)平均温度、年平均温度、年蒸发量呈负相关关系,与最冷月(1月)平均温度相关性不明显;影响小型哺乳动物物种丰富度空间分布的决定因素以年降水量、最热月(7月)平均温度、年平均温度、年蒸发量为主的要素所构成的基本景观因子,其次是最冷月(1月)平均温度.

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	李俊生
	宋延龄
	张晓岚

关键词 ：小型哺乳动物, 多样性分布格局, 气候因子, 相关性分析

Abstract：

Geographic distribution data were collected from field investigation,literature review and museum collections.Environmental variables in the distribution area of small mammals were used for factor analysis to determine the principal factors that affect the distribution pattern of small mammals.The results showed that species richness and precipitation were positively related,whereas the relationship between species richness and average temperature in July,the annual average temperature,and Average annual evapotranspiration were negatively correlative.No significant relationship was observed between the species richness and Average annual evapotranspiration.The factor analysis on the environmental variables which affect the distribution of small mammals revealed that diversity of precipitation,average temperature in July,the annual average temperature,and Average annual evapotranspiration played a dominant role as a basic landscape factor,that total average temperature in January consisted of another principal factor.

Key words： Small mammals Pattern of species diversity distribution Climate factors Analysis of correlation

收稿日期: 2005-08-25

Q142

基金资助:国家自然科学基金资助项目(30270210);国家自然科学基金资助项目(30440036)

引用本文:

李俊生1, 宋延龄2, 张晓岚3. 甘肃河西小型哺乳动物物种多样性与水热分布的关系[J]. , 2005, 24(4): 330-335.
LI Jun-sheng1, SONG Yan-ling2, ZHANG Xiao-lan3. Preliminary analyses on the relationship between the distributional patterns of the small mammals diversity and spatial distribution pattern of water-heat in Hexi region of Gansu Province, China. , 2005, 24(4): 330-335.

链接本文:

http://www.ecolsci.com/CN/Y2005/V24/I4/330

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