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, by measuring the ratio of the two isotopes in the rings of trees, and matching the result to the age of the ring, a history of hurricanes spanning the life of the tree can be reconstructed.
因此，通过测量树的不同年轮(ring)中两种氧同位素的比例，并将结果比对年轮所显示的树龄，就可再现树木一生中所经历的所有飓风。
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。
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。
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