Sample-tree age 标准木龄
seed-tree age 母树年龄
Tree age rings 树龄年轮
mother tree age 母树年龄
tree-age measurement method 测龄法
age of tree 树龄
same-age tree 同龄树
bearing-age tree 结果树
The total nutrient pools per hectare increased with increasing tree age.
每公顷养分储量随林龄增加而增加。
参考来源 - 桉树人工林生态系统中林木生长、养分平衡与地力维护研究·2,447,543篇论文数据，部分数据来源于NoteExpress
So it is quite useful of measuring tree-age in the fields of old-tree protecting and making use of some precious tree species.
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。
You can tell the age of a tree by counting its rings, but these records of trees' life really say a lot more.
你可以通过数年轮来判断树木的年龄，但是作为树木生命的记载，年轮能说明的东西远不止于此。
Possible nodes on the tree would be age, income level, current number of cars, mariatl status, kids, homeowner, or renter.
这个树上的节点可以是年龄、收入水平、目前拥有的车的数量、婚姻状况、有无孩子、房主还是租户。
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