广西热带南亚热带适宜的国外树种引种来源区选择的研究

国外树种引种是收集保存林木种质资源和丰富森林遗传多样性的重要途径之一。为了探索与广西热带南亚热带区域相对应的国外树种引种来源区的适宜程度和潜力，本研究以林木引种驯化和林木种质资源保存的有关理论为指导，在总结广西热带南亚热带5个保存点多年来国外树种引种和种质资源保存实践的基础上，以气候因子的相似性为主要依据，结合考虑气候型、植被类型、植物区系和已引种保存树种及其种源的生长适应情况等因素，将该区域国外树种引种来源划分成适宜区、较适宜区和一般区3类来源区，为进一步有效地全面系统收集保存和利用国外树种种质资源提供了科学依据。

Study on Selection of Appropriate Introduced Source Regions of Exotic Tree Species for the Tropics and South-Subtropics of Guangxi,China

The introduction of exotic tree is one of very important ways for collection and conservation of tree species germplasm resources and enriching genetic diversity of forest.in order to study the appropriate degree and the potentiality of introduced source regions of exotic tree for the tropics and south subtropics of Guangxi,with the theory of forest tree introduction and conservation of germplasm resources as instruction,basing on a large quantity of data and results of long term test in the area,taking climate as the leading factor,and taking climatic type,vegetation type and flora as assistants factors,the thesis separated the exotic tree introduced source regions for the tropics and south subtropics of Guangxi into 3 classes of introduced source regions which are the most appropriate source regions ,the more appropriate source regions and general source regions.The division provided scientific basis for introduction and utilization exotic tree germplasm resources effectively.