漳州市郊区杂草生态位研究

Niche of Weeds in Zhangzhou Suburb

对漳州市郊区不同生境进行杂草调查,计算主要值、生态位宽度和生态位重叠值;按照杂草在不同生境中的主要值进行主成份分析,进行R分析.结果表明:各生境优势种并没有太多重复,结合生态位宽度得出加拿大蓬、裸柱菊、龙葵、马唐和藜为市郊重要杂草;生态重叠值主要分布在3.00以下,占全部比例的94.71%;由R分析得到杂草二维排序散点图,将66种杂草分为A和B两大类,将种类较多的B类又分为3个亚类.

Based on field investigation in zhangzhou suburb,the important value、the niche breadth and niche overlap values of weeds were studied.The two-dimensional ordination plot of 66 main weeds was drawned according R analysis using the method of principal component analysis.The result showed dorminace species in different habitats was not the same,from which and niche breadth it was thought that were important weeds.the niche overlap values were mainly under 3.00 of which the percentage was 94.71%.66 main weeds species were classified： group A and group B which species was more and were classied three sub-group.