贵州习水自然保护区森林群落主要优势种的生态位研究

对20种主要优势树种的生态位进行研究的结果表明,组成习水自然保护区森林群落的20个优势树种中,18个生态位宽度指数较大,说明它们对环境的适应能力较强且能较好地利用环境资源,是构成习水国家级自然保护区森林群落的优势树种。保护区的生态位重叠普遍较高,但它们之间的竞争为利用性竞争,从而形成保护区较稳定的森林群落。建议保护区根据植物生态位的特点,采用相应的方法促进天然林树种的恢复与发展。

Research of Niche on Main Spegie of the Forest Community in Xishui Nature Reserve of Guizhou

The niches of 20 dominant population in Xishui Nature Reserve of Guizhou were analyzed by using Shannon-Wiener、Levins niche breadth and Pianka niche overlapping.The result indicated that among the 20 dominant populations,18 of them had bigger niches breadth indices,that means they were more adaptive to the environment and can make a better use of the resources.And they were mine superiority species of Xishui national nature reserve forest community＇s.Reserve of niche overlapping generally high.But their competition was favorable each other.And forming stable forest community in Xishui Nature Reserve.And suggest that according to plant niche area to promote natural forest tree species recovery and development.