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选择我国江苏、安徽和广东7个不同林型的松树林地,对微红梢斑螟(Dioryctria rubella)蛀道节肢动物种群结构及生态位进行调查研究。结果表明:微红梢斑螟蛀道节肢动物种群隶属2纲9目13科,分别为蛛形纲蜘蛛目、蜱螨目,昆虫纲弹尾目、革翅目、啮虫目、半翅目、缨翅目、鞘翅目、膜翅目;利用相对优势指标判别微红梢斑螟蛀道节肢动物优势种有螨科和隐翅虫科,丰盛种有跳虫科,常见种有啮虫科、蠼螋科、蚁科、锯谷盗科、象甲科、蓟马科和茧蜂科,偶见种有小蠹科、蝽科和微蛛科;利用Levins生态位宽度和Pianka生态位重叠对各种群生态位计算表明,隐翅虫科与微红梢斑螟的时间和空间生态位重叠值最大,说明在各种群中隐翅虫科与微红梢斑螟的跟随关系最为紧密;利用聚集度指标法判别优势种群隐翅虫的空间分布属于聚集型分布,用零频率方法计算隐翅虫种群的空间格局为聚集型,种群类型为聚集度逆零频率制约型。
Seven species of pine forest in Jiangsu, Anhui and Guangdong were selected to study the structure and niche of the arthropod species of Dioryctria rubella. The results showed that the species of the arthropods were 2-class, 9-orders and 13-orders, belonging to the order Arachnida Acrididae, Acarina, Insecta, Lepidoptera, Hymenoptera, Hemiptera, Thysanoptera, Coleoptera, and Hymenoptera. The relative dominant indexes were used to identify the dominant species of arthropod mites and fipotoids, Scabiridae, Asteraceae, Thrips, Braconidae, and Braconidae. Occasional species of Beetleidae, Pentatomidae and Araceae were found. Using Levins niche breadth and Pianka niche overlap The calculation of niche of each group showed that the overlap of time and space niche between Phasianidae and Dictyopsis microcarpa was the largest, which indicated that the follow-up relationship between Paederoptera and Microtus fortunei was the most in all groups. The spatial distribution of the dominant flies, Paederiasis, was classified as aggregated distribution by the degree of aggregation index. The spatial pattern of the population of the pest flies was clustered by the zero-frequency method, and the type of the population was the inverse zero-frequency constraint.