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These forests, often of poor timber value and with the tallest trees rarely 100 feet in height and few in the number, occur mainly in the rather low-lying and flatter land between the Red Meranti-keruing or Balau forests and the swamp forests. They are mainly found in Perak as in parts of Pondok Tanjong, Parit, Chikus, Kroh, Trolak and Gunung Besout Forest Reserves, in Selangor as in parts of Bukit Belata, Bukit Cerakah, Bukit Tarek, Rantau Panjang and Ayer Hitam Forest Reserves and in Johore as in parts of Jemaluang Forest Reserve. These forests are characterized by the comparative abundance of Koompassia malaccensis (kempas), Canarium and Santiria spp. (kedondong), Dialium patens, D. platysepalum (keranji), Dillenia eximia and D. reticulata (simpoh), Ixonanthes reticulata, Madhuca spp. and Palaquium (nyatoh), and the relative scarceness or complete absence of dipterocarps. Dipterocarps that do occur are Dipterocarpus crinitus, D. kunstleri, Shorea singkawang, S. leprosula and S. parviflora, with an occasional Neobalanocarpus heimii and Shorea maxima. Calophyllum species are also usually common and occasionally appear to become relatively more common after the forest has been disturbed. Other tree species that are commonly present are Dyera costulata, Fagraea gigantea, Melanorrhoea torquata, parkia singularis, Pithecellobium confertum and Pouteria malaccensis. Locally, Palaquium gutta is a common species; it was departmentally encouraged prior to 1925 in silvicultural operations and this has resulted in extensive rich areas of this species in some reserves, e.g. Trolak Forest Reserve, Perak. This type often appears to be associated with heavy white clays of poor status on old raised beaches of the west coast. |
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