关键词: 物种丰富度, 空间格局, 分异, 啮齿动物

Abstract: The relationships between the spatial pattern of rodent species richness and environment factors were analysed based on wild survey in North China plain and Loessp lateau from 1992 to 1994, using quadratesmethod and living-trap as the primary means of data collection . The results showed that: There are the more species richness of rodent in Nanmong Plateau (northernest Shaanxi and southernest Inner Mongolia) than that of Fen, Wei rivers basin of Shaanxi and Shanxi and also Hebei Mountainous area,but there are the most lowest species in Huabei Plain. The correlation analysis showed that: Species richness does not appear to the increase of latitude and altitude changes ,but obviously positive correlated with longitude increase; species richness, positively correlated with area of mountain, not obviously correlated with hills, the most obviously positive correlated with total area of landscape types , by contrast, negatively correlated with area of plain; richness is not obviously correlated with temperature, but negatively correlated with fall rain. Based on our data , the species richness of rodents is determined by the degree of complicates of habitat types.

Key words: Species richness, Spatial pattern, Variations, Rodents