In forest society as effect of emulation of certain types more dominant from [at] is other. High trees and stratum ( lapisan) to the defeating or mastering lower trees represent birchs which distinguishing pertinent forest society. For example, rain forest ( forest rain) [in] Wai Kambas ( Lampung) predominated by types of Shorea Leprosula and of S.Ovalis. Both types of that not merely there are [at] A stratum ( teratas) but its biggest wood volume even also ( Soerianegara. 1967).
According to Soerianegara ( 1967) coronet stratification in rain forest for example as follows:
Stratum A : Coat to the consisting of total elm [of] him 30 keatas m. Usually its coronet is not interdependent, diametrical and high tree bar. Birchs of this stratum when is young [of] him that is [at] storey;level plant till sapihan need wings of in a fashion, but for growth hereinafter need light which quite a lot.
Stratum B : Consist of its elms 20-30 m. its interdependent coronet in general, tree bar usually branching many and free bar [of] its branch [do] not too high. Birchs of this [is] stratum less is needing [of] light or hold up will wings of is ( lenient).
Stratum C : Consist of its elms 4-20 m. its interdependent coronet. Trees in this stratum lower and small and also branching many.
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