它是第四纪冰川运动幸存下来的珍贵树种。
柞木：国家二级珍贵树种，是中国东北林区中主要的次生林树种。
Quecusmongolica:the second class nation protect plant. main species in Northeast china.
对降低珍贵树种的消耗，提高产品的质量和附加值具有重要的意义。
It is important to lower the timber consumption of valuable tree species and improving the quality of products.
通过年轮测量树龄在古树保护及珍贵树种开采利用等领域有着十分重要的意义。
So it is quite useful of measuring tree-age in the fields of old-tree protecting and making use of some precious tree species.
本研究通过诱发变色可以使枫桦的颜色变为珍贵树种的颜色，或者接近珍贵树种的颜色；
This study can change the color of Betulacostata trautv to or access to the color of precious essence through induced discoloration.
木材单板染色有利于改善木材视觉特性，可以实现模仿珍贵树种木材的色泽，提高装饰效果。
Veneer dyeing can improve wood visual characteristics and imitate the color and luster of precious wood species, to increase the decorative effect.
森林是某种原始栖息地，并可能存在一些极为珍贵的树种。
The forest is pristine habitat of a sort likely to contain some extremely valuable pieces of timber.
珍贵用材树种资源是我国重要的战略资源。
The precious timber trees resources are our country important strategic resources.
柚木为马鞭草科柚木属植物，是世界上最珍贵的用材树种之一。
Tectona grandis classified as Tectona plant of Verbenaceae is one of the most valuable timber tree species in the world.
本文在阐述亚热带珍贵阔叶用材树种种质资源情况基础上，对所开展的珍贵阔叶用材树种的研究做了回顾。
After introducing valuable hardwood tree species resources in subtropical area, we reviewed some studies of valuable hardwood tree species in past.
清澈的溪流、宁静的山谷、珍贵的树种、繁茂的植被，让这里处处散发着大自然的原始气息。
The limpid streams, quiet valleys, rare tree species and dense vegetation here all contribute to its primeval beauty.
有一棵1761年栽种的树被刮倒，其他许许多多珍贵的树种损失也不少。
One tree which dated from 1761 was blown over and many other valuable trees were lost.
树冠窄小的乐东拟单性木兰生长速度中等，但其木材密度大、径向均匀性高，是优良的珍贵用材树种；
P. lotungensis is also an excellent precious timber specie with higher wood density and radial uniformity, though its growth rate is medium.
阿月浑子是世界珍贵干果及木本油料树种，具有很高的经济价值。
Pistachio (Pistacia vera L. ) has great economic value as a precious nut and woody-oil plant.
阿月浑子是世界珍贵干果及木本油料树种，具有很高的经济价值。
Pistachio (Pistacia vera L. ) has great economic value as a precious nut and woody-oil plant.
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