我国麻疯树地理种源及分布区考证

经过详细地调查研究证明,我国滇、川、黔三省的热带和亚热带干热河谷区存在大量麻疯树天然群落和野生种群,并对其进行了植物形态学、生长生物学、群落生态学、种群生态学和分布区学的全面研究和再认识,提供了丰富和确切的观察结果。在上述研究基础上,进一步提出了"雨林型"麻疯树地理种源和"萨王纳型"麻疯树地理种源的新概念,为我国麻疯树产业化种植及分区规划提供了依据。金沙江干热河谷"萨王纳型"麻疯树地理种源的存在和出现展示着该物种在纬度极限和海拔极限条件下的生存能力,充分证明其泛热带分布和广泛分布于热带亚洲、热带非洲和热带大洋洲的事实,为麻疯树植物区系地理学研究提供了佐证。

The Geographical Provenances and Distribution of Jatropha curcas L. in China

This investigation shows that both Jatropha curcas natural communities and wild populations are widely distributed in the dry-hot river valley areas of Yunnan,Sichuan and Guizhou provinces.Systematically,we evaluated the plant morphology,growth biology,community ecology,population ecology and floristic plant geography of Jatropha curcas,and provided a precise and comprehensive report.This data shows that there are two geographical provenances for Jatropha curcas:"rain forest" and "Savanna".This classification is critical for the large scale plantation plan.The presence of "Savanna" geographical provenance of Jatropha curcas in the dry-hot river valley areas of Jinsha River indicated that Jatropha curcas could survive in the extreme weather condition in this latitude and altitude,and further verified the statement of widely tropical distribution and the fact that Jatropha curcas distributed in tropical Asia,tropical Africa and tropical Pacific,and then provide new information for the studies of floristic plant geography of Jatropha curcas.