96 MANGROVE SWAMPS 
an average volume of 22.37 cubic meters in trees more than 40 
centimeters in diameter. No trees produce on the average more 
than one log 5 meters in length. The most numerous tree was 
api-api (Avicennia), and the next was bakauan (Rhizophora 
spp.). The third most numerous species was busain (Bruguiera 
sexangula). The wood of api-api (Avicennia) is of compar- 
atively little value, but is extensively used as firewood. That of 
the other species is very valuable. 
Forester Medina has also made valuation surveys of other 
stands in Samar. The results are given in Tables VII to XJ. 
In all of these tables, bakauan (Rhizophora spp.) is the most 
numerous tree. The second most numerous is api-api (Avi- 
cennia).. This species, however, is very much less numerous 
than bakauan (Rhizophora spp.) and is represented by a much 
smaller volume. In Table VIII, langarai (Bruguiera parviflora) 
ranks next to bakauan (Rhizophora spp.) and api-api (Avi- 
cennia) third. The average volume per hectare in the different 
areas varies from 13.77 to 120.87 cubic meters. These tables 
represent swamps which have been used to some extent for 
the collection of firewood. 
TABLE VII.—Stand of firewood 5 centimeters and over in diameter, between 
Pinamacdan River and Matnog Creek, Samar. Valuation survey taken 
on 6.35 hectares. Applicable to 2,710 hectares. 
[Data from report by Forester Rafael Medina. ] 








|Per cent iz 
oe | Hviguage 
Species. es By) Trees. Logs. “oLloes Volume. 
| number per tree. | 
| of trees. 
we 2) See ~ A Re ee 
| cu. m. Cords. 
Bakavian® «-<2-tee2 ee see ee 70. 02 1, 009 3, 088 3.1 68. 63 | 27. 45 
Aspi-apie=- 92222 on a ee oa 13. 88 200 | 449 2.2 9.78 3.91 
Paratpatess sie eres eee Seen | 9.58 138 249 | 1.8 3:64) e45 
Pototan se ee eee sae ee 2.08 30 94 3.1 1.84 0.74 
TLangaraiy site ee nae) | 2.29 38 125 3.8| 1.60] 0.64 | 
Dab igi S220 6 ete Rte oe ker eee 1.66 24 59 aD 1.50 0.60 
‘Dabaus e222 2-6 eee ee ee 0.21 3 13 4.3 0. 22 0.09 | 
Tan galt: = s\oeseee es ee ee ae | 0. 28 4 7 1.8 | 0.20 0.08 
oY oh) oe ee ok ee es | 100. 00 1,441 4S 084 || oy es 87.41 | 34. 96 
Stand'pershectare==—- == ==. | = oe 227 6434 besa 13.77 5.50 
| 



