TY -JOUR AU -Chang-Fu Hsieh AU -Tsengg-Chieng Huang AU -Kuoh-Cheng Yang and Shing-Fan Huang TI -Vegetation Patterns and Structure of A Secondary Forest on Mt. London, Northeastern Taiwan PY -1990 DA -0000-00-00 JO -Taiwania VL -35 IS -4 SP -207 EP -220 UR -https://taiwania.ntu.edu.tw/abstract/61 AB -Floristic composition and structure of a lowland secondary forest was studied in detail on Mt. Lonlon of northeastern Taiwan.. The study plot contained 241 species, of which 70 were trees, 39 shrubs, 48 climbers, 45 herbs, and 39 pteridophytes. Diversity of the trees with dbh 1.0 cm was calculated as Shannon-Weiner index (3.09), Simpson index (0.08), and Equitability index (0.79). The dominance-diversity curve seemed to conform to a lognormal species distribution. The community structure was characterized by a relative dominance of Myrsine sequinii, Ardisia sieboldii, Persea thunbergii, Wendlandia formosana, Gardenia jasminoides, and Schefflera octophylla in the canopy, and Psychotria rubra and Lasianthus plagiophyllus in the understory. Detrended correspondence analysis and cluster analysis led to the recognition of three ecologically meaningful groupins. Diameter distribution curves for vegetation types were observed to fit the negative exponential function. However, slight under-representation in the smallest size-class of the upper slope vegetation might be indicative of some minor anthropogenic disturbances. Compared to the mature low land rain forests of other areas the Lonlon forest showed a lower basal area, and seemed to be indicative of structural immaturity. DO -10.6165/tai.1990.35.207