台湾海峡两岸生物地理格局、过程及其与古地理的关系

Taiwan Island is located on the Southeast China Sea and was separated from Mainland China.since the last glacial period. It is believed that there are closed connections in biogeographical.patterns between the island and mainland. However, biogeographical patterns and processes in the.two sides of the Strait are not clear, and need to make sure. In this project, our purpose is to.explore the biogeographical patterns and processes in relation to paleogeography in the two sides.国家自然科学基金资助项目结题报告.4.of the Taiwan Strait by studying fauna and flora of some selected regions, comparing structures.and compositions of plant communities, and analyzing population attributes of animal and plant.populations, together with literature-based review..In the population level, sibship and speciation of subspecies in Polyura eudamippus,.Hynobius, and species in genera Abies and Fagus were investigated througt studying their.feactures of anatomy and genetical diversity. Some of the results have showed that morphology.and DNA diversity of Fagus hayatae, F. hayatae var. zhejiangensis and F. bashanica are closed.each other and that genetic distance of Abies kawakamii in the Island is closed to that of five.species in Abies that are distributed in south mainland, suggesting that these taxa have strong.conections morphologically and genetically. However, there was no genetic differentiation in.Polyura eudamippus between Taiwan and the eastern part of mainlands, which means that the.strait could not stop the individual exchange for this species in both sides..In the regional scale, we selected Gaoligongshan area, Hunan province, Fujian province and.Taiwan province as the study area to explore effects of eastern Himalayan flora on that of its.eastern regions. The results showed that floristic similarity between Fujian and Hunan was highest,.fellowed by that between Hunan and Gaoligongshan, and the lowest was between Fujian and.Gaoligongshan. This suggests that the eastern Himalayan flora might affect the floristic.composition of its eastern regions..In the plant community level, we chose Mts. Nanjamawa, Gongga, Shengnongjia, Qinling,.Wuyi and Yushan to compare the compostions of the plant communities in both sides of the strait..A tree plot with a size of 600-1000 m2 was set up at 50-100 m interval for each mountain. A total.of 320 plots have been investigated and about 5000 samples have been collected. The data.analyses are in progress..Paleoecologically we used the paleo-distribution of Fagus to identify the connections.between both sides of the strait. Some evidence has suggested the dispersal of beech species from.mainland to the island

在综合分析两岸第四纪地质历史和生物地理资料基础上，选择闽浙山区，东喜马拉雅和台湾那中央山脉区，进行区系，群落，种和种群层次上的对比研究；对昆虫、鱼类、两栖类、植物等类群，应用形态学和分子生物学方法，研究海峡两岸生物分布格局、物种分化、形成的过程，及其与与第四纪古地理的关系；验证和发展历史生物地理学和进化生物学有关理论。