关键词: 蚤类, γ多样性, β多样性, 纬度梯度, 水平分布格局, “三江并流”纵谷地

AbstractEvaluation of regional species diversity is an important component in studying global biodiversity. In this paper, amphibian species diversity (ASD) in Fujian Province was evaluated using the G-F index and cluster analysis with chord distance (CRD) to measure between-groups linkages. The analysis was conducted on the amphibian compositions in 22 county or city areas and five zoogeographic divisions. Differences between counties or cities were significant. For the G-index of ASD, Wuyishan scored the highest value (2.465) among the counties or cities; and central Fujian zoogeographic division scored 2.534, the highest value of the five divisions. The G-index, F-index and G-F index of the entire Fujian ASD are 2.978, 4.863 and 0.388, respectively. The cluster analysis based on CRD showed that the northern, eastern, and western Fujian zoogeographic divisions, located in Central China Zoogeographic Region, formed a group, which successively clustered with the central and the southern zoogeographic divisions in the South China Zoogeographic Region. The linkage pattern based on counties or cities is similar to that based on zoogeographic divisions. The author suggests that Datian County, though located in central Fujian, should be placed in the western Fujian zoogeographic division.

Key words: fleas, γ diversity, β diversity, latitudinal gradient, horizontal patterns, Three parallel rivers landscape