【摘要】 2008年持续大范围低温天气,对我国南方森林植物带来灾难性伤害,灾后不久,对大果紫檀等珍贵树种的抗寒性进行调查。结果表明:当年或2年生紫檀属幼林对比黄檀和檀香属幼林,抗寒性较差,2.5℃的低温已明显受害,这一温度是其受害的阀值,也是本地区引种的主要限制因子。而檀香受害温度的下限是-1℃,降香黄檀能耐短暂-3℃低温,白木香能耐短期霜冻。苗木品质和树龄一定程度上影响其抗寒性。更多还原

【Abstract】 A long lasting weather of massive ice storm at the beginning of 2008 caused a large scale disaster to plants of forests in south China.A survey was carried out to evaluate harm of precious trees including Pterocarpus macrocarpus storthy after the disaster.The results showed that seedlings of Pterocarpus macrocarpus at the age of 1 or 2 a were inferior to those of Dalbergia and Santalum in cold tolerance.Pterocarpus macrocarpus seedlings were apparently harmed at 2.5℃,which was a critical temperature for the survival of the species and also a limiting factor to introduce the species to this region.Santalum album could tolerate a temperature as low as-1℃.Dalbergia odorifera could survive at-3℃ and Aquilaria sinensis could survive frosts for a short time of frosting.In addition,the seedlings with high quality and older age showed higher cold tolerance.更多还原