秃杉混交林生产力研究

对秃杉、杉木、火力楠混交林,秃杉、杉木混交林以及秃杉、杉木纯林的生物量及其空间结构进行了研究。结果表明:秃杉混交林比秃杉纯林具有更高的生产力,混交林中又以秃杉、杉木、火力楠混交林的生产力最高,林分总蓄积量达75．06 m3／hm2,总生物量达81．57t/hm2,分别比秃杉纯林高34．4％和37．7％。混交林林分具有一定成层性,林分结构比秃杉纯林更有利于生物量的积累,而且秃杉比杉木曼速生。

Study on the Biomass of Mixed Forests of Taiwania flousiana

Comparative studies were made on the biomass and stand structure among different kinds of mixed stands of Taiwania flousiana and pure stands of T. flousiana and Cunninghamia lanceolata. The results showed that the stand productivity of the mixed stands was higher than that of the pure ones. There was a maximal productivity of the mixed stands of T. flousiana, C. lanceolata and Michelia macclurei, with the stand stock 75 .06 m3/hm2 and the biomass 81 .57 t/hm2, 34.4% and 37 .7% higher than those of T. flousiana pure ones, respectively. Finally, the mixed stands were nice structure of layer property, and more rational structure which contributed to the biomass acoumulation than the pure ones. Moreover, T. flousiana grows faster than C. lanceolata.