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世界上人口不断增长,对植物资源,包括木材的需要不断增加,在满足人类木材要求方面,辐射松(Pinus radiata D.Don)起着重要的作用。辐射松每年每公顷生长量可高达24立方米,而且造林容易,成本低廉,是一个优良的造林树种。辐射松在原产地仅分布于加利福利亚滨海以及瓜德罗普沿岸岛屿大约4000余公顷的地区,而且形状和大小也并不出众。但在十九世纪后期引种到许多其它国家后,其生长一般比原产地好,智利、新西兰、澳大利亚和东非等国家和地区都采用它作为营造大面积商品林的树种。迄今为止,辐射松栽植最广的地区是智利和新西兰,这两个国家都有25万公顷以上的辐射松林,生产木材和发展造纸业。澳大利亚也有10万公顷以上的辐射松林,大部分
The growing population in the world and the ever-increasing need for plant resources, including timber, play an important role in meeting the requirements of human timber. Pinus radiata D. Don plays an important role. Pinus radiata annual growth rate per hectare up to 24 cubic meters, and afforestation easy, low cost, is an excellent afforestation species. Pinus radiata in the country of origin is located only in the coastal area of California and the island of Guadeloupe, about 4,000 hectares, and the shape and size is not outstanding. However, its introduction into many other countries in the late nineteenth century generally grew better than its origin and was used by countries such as Chile, New Zealand, Australia and East Africa as the tree species for large-scale commercial forest production. To date, the most widely planted radiata pine is Chile and New Zealand, both of which have more than 250,000 hectares of pine forest, produce timber and develop the paper industry. Australia also has more than 100,000 ha of pine forest, most of them