闽北丘陵地区杉木林林下植被多样性研究

Plant Diversity under Cunninghamia lanceolata Forests in Hilly Area of North Fujian Province

杉木是我国南方主要的速生用材树种之一,在林业生产中占有重要地位。该文通过对杉木纯林、5杉木5木荷、5杉木5马尾松3种不同杉木造林林分林下植被进行调查研究,结果表明:杉木、木荷混交林,杉木、马尾松混交林和杉木纯林林下植被物种数分别为32种、27种、16种,其中杉木、木荷混交林最多,杉木纯林最少;3种林分中,杉木、木荷混交林H>杉木、马尾松混交林H>杉木纯林H,表明针阔混交林物种多样性比针叶混交林和针叶纯林丰富。

Cunninghamia [anceolata is one of fast growing tree species with most fine timber in southern China and plays an important role in forestry production. Species number under 3 different C. [anceolata forests, including pure C. lanceolata forest （ C）, 5 C. lanceolata-5 Schima superba（ C-S）, 5 C. lanceolata-5 Pinus rnozsoniana（C-P） were studied. The results were as follows： there were 32, 27 and 16 species for the forests of C-S, C-P and C, C-S was the most, while C the least. The overall diversity index of 3 forests from high to low was C 〉 C-S 〉 C-P. Species diversity was higher in mixed wood than coniferous mixed forest and coniferous pure forest.