I work on terrestrial forest species in Singapore. This info to hard to get from any one resource but you can check http://florasingapura.com

A good book on this is: Forester's Manual of Dipterocarps by C.F.Symington (Malayan Forest Records)

Thank You for Your response.

I am looking for more specific information about wood / cambium structure called storeyed / storied / stratified pattern.

Hi! Here are some information that threatens the large terrestrial forests. You might want to check out briefly this paper: http://www.nature.com/nature/journal/v404/n6780/pdf/404836a0.pdf

However, what kind of information about big trees would you like to know?

http://www.nature.com/nature/journal/v404/n6780/pdf/404836a0.pdf

Here are other papers that include large trees in their studies:

http://homepages.see.leeds.ac.uk/~lecajd/papers/deanetal99.pdf

http://www.esajournals.org/doi/abs/10.1890/06-1046.1?journalCode=ecol

They have actually mostly stated that a lot of the large trees are vulnerable and are rapidly dying nowadays.

I may help you when I move to UBD in Brunei at the end of August. Keep in touch.