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.
对危害当地古树资源的因素进行了分析，并综合实际情况提出了具体的保护对策。
The factors harmful to the local ancient tree resources are analyzed, and measures for protection are set forth according to actual circumstances.
对危害当地古树资源的因素进行了分析，并综合实际情况提出了具体的保护对策。
The factors harmful to the local ancient tree resources are analyzed, and measures for protection are set forth according to actual circumstances.
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