THE PECULIAR HABITAT AND PLANT COMMUNITIES OF THE WEN·SHAN FOREST DISTRICT, FORMOSA

S Lee, Hsuan Keng
unpublished
Eugenia !ormosana Hay. Photinia taiwQniana Hay. Pithecolobi",n l.u:idum Benth. Engethartia formosana Hay. This broad·leaved association belt may be subdivided into 2 vertical sections, from the elevation 500 m. to 550 m. being taken as a transitional belt. Taking the principal tree species of this Lauro·Fagaceous association into consjderation, in Lauraceae, the distribution of the species of the 3 dominant genera, namely, Machilu,s, Actinodaphne, and CinnalllOmum, in the upper section (550
more » ... er section (550 m.-l,OOO m.) is as follows: M(J(;hilus zui/wensis Hay. Actlnodaplme nantoensis Hay. Actinodaphne muslumensis Hay. Cimzamomum ralldaiense Hay. Cinnamomwn psettde-laureirii Hay. Those that distribute in the lower section (300 m.-500 m.) are as follows: Mach£lz/'s !(usal1oi Hay. Machi/us Thunbergii Sieb. & Zucco Actinodaphne pedicel/ata Hay. Ci11-12anWmum: camplwra Nees. Cinnamomttm micranthuln Hay. The phenomena of such vicarious distribution in altitude among the genera is also very notorious in Fagaceae. Such as the species of Qu.erctI,s and Lithocarpus of . Fagaceae distribute in the upper section as follows: Quercus variabilis BI. Quercus longinux Hay. Lithocarpus Kawakamii Hay. LitJwcarpus tematictlpula Hay. Those that are found in the lower section are as follows: Quercus gilva Bl. Quercus glatu:a Thunb. Shiia u·raialla Kaneh. (Limlia 1,raiana Masam. et Tomiya.) Moreover, in the upper section of the warm evergreen broad-leaved belt, the mem. bers of the Lauraceae develop more vigorously than those of the Fagaceae. •
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