动物学研究2012，Vol.33Issue(4)：343-353,11.DOI:10.3724/SP.J.1141.2012.04343
中国蛇类物种丰富度地理格局及其与生态因子的关系
Geographic patterns and ecological factors correlates of snake species richness in China
摘要
Abstract
Understanding large-scale geographic patterns of species richness as well its underlying mechanisms are among the most significant objectives of macroecology and biogeography. The ecological hypothesis is one of the most accepted explanations of this mechanism. Here, we studied the geographic patterns of snakes and investigated the relationships between species richness and ecological factors in China at a spatial resolution of 100 km×100 km. We obtained the eigenvector-based spatial filters by Principal Coordinates Neighbor Matrices, and then analyzed ecological factors by multiple regression analysis. The results indicated several things: (1) species richness of snakes showed multi-peak patterns along both the latitudinal and longitudinal gradient. The areas of highest richness of snake are tropics and subtropical areas of Oriental realm in China while the areas of lowest richness are Qinghai-Tibet Plateau, the grasslands and deserts in northern China, Yangtze-Huai Plain, Two-lake Plain, and the Poyang-lake Plain; (2) results of multiple regression analysis explained a total of 56.5% variance in snake richness. Among ecological factors used to explore the species richness patterns, we found the best factors were the normalized difference vegetation index, precipitation in the coldest quarter and temperature annual range ; (3) our results indicated that the model based on the significant variables that (P<0.05) uses a combination of normalized difference vegetation index, precipitation of coldest quarterand temperature annual range is the most parsimonious model for explaining the mechanism of snake richness in China. This finding demonstrates that different ecological factors work together to affect the geographic distribution of snakes in China. Studying the mechanisms that underlie these geographic patterns are complex, so we must carefully consider the choice of impact-factors and the influence of human activities.关键词
宏生态学/生态假说/生物地理学/空间分布格局/能量假说/生境异质性假说Key words
Macroecology/ Ecological hypothesis/ Biogeography/ Spatial distribution patterns/ Energy hypothesis/ Habitat heterogeneity hypothesis分类
生物科学引用本文复制引用
蔡波,黄勇,陈跃英,胡军华,郭宪光,王跃招..中国蛇类物种丰富度地理格局及其与生态因子的关系[J].动物学研究,2012,33(4):343-353,11.基金项目
国家自然科学基金面上项目(NSFC31071892) （NSFC31071892）
中国科学院知识创新工程方向项目(KSCX2-EW-J-22) （KSCX2-EW-J-22）
科技部基础专项(2006FY110500-3) （2006FY110500-3）
