福建三明天然米槠林与米槠人工林群落学特征的比较研究

通过设置临时标准地，对天然米槠林皆伐炼山后人工种植１７年生米槠林和自然保护区米槠林进行群落学特征的研究。结果表明：两者都以高位芽植物为主，但人工林的中，小高位芽植物比例较天然林低，而矮高位芽植物比例较天然林高；天然林层次结构复杂，种类较多，而人工林结构简单，种类较少；

COMPARATIVE STUDY OF PHYTOCOENOLOGY CHARACTERISTICS OF NATURAL CASTANOPSIS CARLESII FOREST AND C. CARLESII PLANTATION IN SANMING,FUJIAN

Comparative researches have been made on the phytocoenology characteristicsof the natural Castanopsis carlesii forest and the C. carlesii plantation planted for 17years after the former being cut and burned. The results show that the percentage ofmeso-phanerophytes and micro-phanerophytes in the plantation is lower than that in thenatural forest,but the percentage of nano-phanerophytes in the plantation is higher. Thenatural forest has more complex structure and richer species(122 species),and the plantation has simpler structure and less species(66 species). The natural C. carlesii population are growing ones,and the plantation population are declining ones because of manmade disturbing. The index of diversity of species of Shannon-Wiener(ID)and the indexof eveness degree of Shannon(ED)of each layers of the natural forest are higher thanthat of the plantation,and the index of dominant degree of Simpson (DD) varies oppositely.