【摘要】 1997年对山西太谷棉田的蜘蛛群落进行了调查研究,共发现蜘蛛7科、17种、群落主要成分是星豹蛛和草间小黑蛛;对7种棉田主要蜘蛛的时间、空间及时空二维生态位进行了分析,结果表明星豹蛛和草间小黑蛛的时空二维生态位宽度值和重叠值均较大,说明这2种蜘蛛不但发生时间长,而且分布范围广,是棉田蜘蛛的优势种;根据生态位重叠值,利用模糊聚类法将7种棉田主要蜘蛛划分为4个类群。更多还原

【Abstract】 Investigation on the structure of spider communities of the cotton field were carried out in Taigu County,Shanxi Province in 1997,and 7 families, 17 species spiders were found. The main components of the community were Pardosa astrigera and Hylyphantes gramincola. The temporal-niche, spatial-niche and temporal-spatial two-dimension niche of 7 main spider species were analyzed,and the result showed that the temporal-spatial two-dimension niche breadth value and niche overlap value of Pardosa astrigera and Hylyphantes gramincola were higher. This indicated that the two spider species were long-occurred and wide-distributed and were the dominant species in cotton field. According to volues of niche overlaps, 7 spider species could be divided into 4 groups by fuzzy cluster method.更多还原