长白山北坡访花昆虫研究(Ⅲ)——访花昆虫多样性

Research on pollinators in north slope of Changbai Mountain(Ⅲ)——Diversity of pollinators

2004—2005年6—9月对长白山北坡各垂直带访花昆虫进行了系统调查研究,并用各种多样性指数对访花昆虫的多样性进行了测度.研究结果表明,该区访花昆虫有251种,分别隶属于9目、62科、179属.群落的α多样性分析表明,不同群落多样性指数从高到低的变化顺序是:针阔混交林群落>针叶林群落>岳桦林群落>苔原带群落;不同月份多样性指数从高到低的变化顺序是:7月末>7月中旬>6月末>6月中旬>8月中旬>9月初;在4个不同群落中,针阔混交林群落访花昆虫的物种数、个体数、物种多样性指数及物种均匀度指数均高于其他群落;群落的相似性分析和聚类分析表明,各不同群落访花昆虫之间的相似性差异显著,访花昆虫群落多样性变化主要与植被类型有关.

The author investigated pollinators in each vertical climatic zones on north slope of Changbai Mountain, and used various diversity indexes to carry on the pollinator diversity in the mountain. The results indicated that there are 251 species of pollinators, which belong to 9 orders, 62 families, 179 genera. A - grade community diversity analysis indicated that, the order of four communities diversity indexes was： Larix gmelini-Betula platyphylla mixed forest community 〉 Coniferous forest community 〉 Betula ermanii forest community〉Tundra community, the order of the diversity index in different months was： the end of Jul〉the middle ten days of Jul〉 the end of Jun〉the middle ten days of Jun〉the middle ten days of Aug 〉 the beginning of Sep. In four different communities, indexes of pollinators in the Larix gmelini-Betula platyphylla mixed forest community, such as the number of species, individuals, the species diversity index and the species uniformity index were higher than those of other three kinds of communities. Similarity and clustering analysis of communities indicated that similarities of pollinators in each different community had remarkable difference. Changes of pollinator community diversity mainly concern with the vegetation type.