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The Environment / How does tree ring size vary depending on the tree age?

« on: 28/02/2010 17:02:30 »

frethack, Many thanks for your insight into detrending.

It has put me onto the right road and got me reading more about the subject. I have now been wondering if there is a reference list of detrend functions and typical parameters for given genus or species of trees. For example, does the Platanus genus use a linear or non-linear function and what might be typical or average parameters for the detrend function e.g. in change in ring width/year? Is it possible to draw any conclusions regarding variations of these parameters? How might they vary between, say, an urban and a nearby forest setting (i.e so that climate variability is minimised)? 

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The Environment / How does tree ring size vary depending on the tree age?

« on: 25/02/2010 19:55:12 »

From what I have read about dendrochronology the age of the tree is not taken into account when looking at tree rings. The assumption is that the ring size is dependant only on climate and it is valid to compare the width of a 10 year ring with that of a 100 year old ring. However, the question I am trying to answer is that given a constant climate - that is the same climate every year is there a variation of ring size throughout the lifetime of a tree? Would a ring from a 10 year old tree be the same width as one from a 100 year old tree if the trees were in identical climates and situations? Alternatively do younger trees make bigger rings than older trees?