生态位宽度对红树林植物群落主要种群分布格局的影响

摘要

通过对广东省湛江市高桥红树林保护区高潮带中的木榄+桐花树群落、桐花树+木榄+秋茄+红海榄群落、桐花树+木榄+秋茄群落的研究,运用扩散系数、聚集强度指数对桐花树、木榄、秋茄、红海榄的空间分布格局进行分析,利用Levins生态位宽度与Hurlbert生态位宽度对4个树种的生态位宽度进行分析,并探讨其相关性.结果表明:4种红树植物分布格局均为聚集分布格局,且聚集强度由强到弱依次为桐花树、木榄、秋茄和红海榄;4种红树植物的生态位宽度呈现相似结果,而且空间分布格局与其生态位宽度呈显著的正相关关系.%In this paper, B. gymnorrhiza + A. corniculatum communities, A. corniculatum + B. gymnorrhiza + K. candel + R. stylosa communities and A. corniculatum+ B. gymnorrhiza + K. candel communities were used as object, as well as the climax zones in Gaoqiao mangrove protection reserve of Zhanjiang city. The spatial distribution pattern of four species were analyzed by using nearest neighbor distance and gathering strength, while Levins niche breadth and Hurlbert niche breadth were used on the four species to analyze their niche breadth and explore its correlation. The results showed that the distrubution patterns of A. corniculatum, B.gymnorrhiza, K. candel, R. stylosa are clustered distribution, and the gatther strength size was that A. corniculatum> B. gymnorrhiza> K. candel> R.stylosa. Then, four species showed the similar results which the niche breadth of indicating. Niche breadth of four species and their spatial pattern was a significant positive correlation.展开▼

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