Stratification of dry dipterocarp forest at Sakaerat [Thailand]
1989
Soraya Chaimongkol
Natural forest community is made up of different overlap population consisting of individuals of different species and ages. To stratify the individuals of a forest stand into elementary subpopulation four different methods were employed. The results revealed that stands S2.1, S2.2, S2.3, S4.2, S4.4 and S4.5 can be precisely divided into three layers by crown depth diagram while stands S1.1, S1.2, S1.3, S1.4, S1.5, S2.4, S2.5, S3.1, S3.2, S3.3, S3.4, S3.5, S4.1 and S4.3 were divided into two layers. Using the M-w diagram, the size structure of stands S3.4 and S4.4 was divided into three groups. However, stands S1.1, S1.2, S1.3, S1.4, S1.5, S2.1, S2.2, S2.3, S2.4, S2.5, S3.1, S3.2, S3.3, S3.5, S4.1, S4.2, S4.3 and S4.5 were divided into two groups but the distinction of the two groups in stands S4.2 and S4.3 was not so clear. Stands S4.1; S1.1, S1.4, S1.5, S2.1, S2.2, S2.5, S3.1, S3.3, S3.4, S4.3 and S4.5; S1.2, S1.3, S2.3, S2.4, S3.2, S3.5, S4.2 and S4.4 can be stratified into one, two and three layers, by the symmetric type difference diagram. The results of the symmetric type difference diagram and the profile diagram are almost similar. It cannot be concluded which method is the best for forest stratification. But it seems that crown depth diagram method is the most convenient for stratifying the dry dipterocarp forest because of discontinuous crowns and the H and HB parameters are easily measured.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by Thai National AGRIS Centre, Kasetsart University
