中国壳斗科植物属的空间多样性及差异

该文采用地理信息系统技术,以县为空间数据的基本单元,以壳斗科植物为研究对象,制作属的空间分布图,计算空间相似性系数,分析壳斗科各属的空间多样性及其差异。结果表明,三棱栎属为连续分布,与其他属的空间分布最不相似,其他属均为间断分布,其中锥属、青冈属、柯属空间分布最相似,这3个属的多样化中心均有云南南部,水青冈的多样化中心比前3个属偏北,栎属多样化中心是四川西南部和云南西北部,西北地区东南部是联系南方与北方栎属植物的重要通道。

Spatial Diversities and Differences of All Genera in Fagaceae of China

Geographic Information System is used in the paper. Spatial data with species of Fagaceae as attributes is composed of every county. Spatial distribution of genera is made. Spatial similarity coefficient is gotten. Spatial diversities and differences between genera in Fagaceae are analyzed. Formanodendron is a distributed area. It is different from other genera which are several scattered areas. Castanopsis, Cyclobalanopsis, Lithocarpus are more similar than other genera in spatial distribution. Their diversity centers have same place which is in the south of Yunnan. Diversity center of Fagus is more north than them. The southwest of Sichuan and northwest of Yunnan is diversity center of Quercus. The southeast region of Northwest China is an important road link between South and North China in Quercus.