. Bulletin. Forests and forestry. STANDS IN MANGROVE SWAMPS. 87 In Table IV tangal (Ceriops roxburghiana) is the most num- erous species and is represented by the largest volume. Ba- kauan (Rhizophora spp.) ranks next to tangal, while busain (Bruguiera conjugata) and langarai (Bruguiera parviflora) are third and fourth, respectively. The other two species present occur in small quantities. In this table the largest percentage of volume is the 15-centimeter diameter class. In both Tables III and IV the number of individuals is greatest in the smallest dia- meter class and decreases in the large
. Bulletin. Forests and forestry. STANDS IN MANGROVE SWAMPS. 87 In Table IV tangal (Ceriops roxburghiana) is the most num- erous species and is represented by the largest volume. Ba- kauan (Rhizophora spp.) ranks next to tangal, while busain (Bruguiera conjugata) and langarai (Bruguiera parviflora) are third and fourth, respectively. The other two species present occur in small quantities. In this table the largest percentage of volume is the 15-centimeter diameter class. In both Tables III and IV the number of individuals is greatest in the smallest dia- meter class and decreases in the larger classes. Table V.—Stand of firewood 10 centimeters and over in diameter on 3 hectares, between Basiad and Angas Rivers, Calauag, Tayabas, Lu- zon. Survey applicable to 720 hectares. [Data from report by Ranger Vicente Castillo.] Species. Bakauan Langarai Busain Pagatpat Tangal Tabigi Total Stand per hectare. NUMBER OF TREES AND VOLUME BY DIAMETER CLASSES IN CENTIMETERS. Species. Diameter class in centimeters. 15. Bakauan ; 121 Langarai ? 485 Busain 104 Pagatpat 1 Tangal 1 54 Tabigi ! 3 Total I 768 Vol- ume. cu. m. Trees. 176 281 74 13 26 570 Vol- ume. cu. m. 20. Trees. 206 172 32 26 Vol- ume. cu. m. Trees. 209 59 Vol- ume. cu. m. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Philippines. Bureau of Forestry. Manila, Bureau of printing
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