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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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

Received: 25 August 2005

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	Articles by authors
	LI Jun-sheng
	SONG Yan-ling
	ZHANG Xiao-lan

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LI Jun-sheng,SONG Yan-ling,ZHANG Xiao-lan. 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[J]. , 2005, 24(4): 330-335.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2005/V24/I4/330

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