九华山森林土壤蜘蛛群落的初步研究

１９９４年初在九华山８种生境土壤有机持层中获蜘蛛标本２６５头，分别隶属于１８科６７种（属），平均密度６．６头／ｍ＾２。不同生群落组成成分差异很大，优势种不同；同一林型相邻５个样方中组成成分也很不相同。种、数组成以双阔混交林最丰富，人工阔叶林贫乏。混交林及阔叶林凋落物层蜘蛛的种、数多质层（Ａ０），而针叶林中正好相反。

PRELIMINARY RESEARCH ON SOIL SPIDER COMMUNITY IN THE FORESTS OF JIUHUA MOUNTAINS, ANHUI PROVINCE

There were few reports of the ecological research on soil spider community in the forests. In early 1994, 265 spider specimens were collected in soil organic matter layer of eight habitats in Jiuhua Mountains. They belonged to 67 genera(species), 18 families. The average density was 6.6 individuals/m 2. There was great difference in the ingredient and dominant genera of spider community among each habitat. The ingredient varied significantly in the five neighboring samples of the same forest type. The compositions of species and number were the richest in the mixed forest of evergreen and deciduous boardleaved trees, and the poorest on the artificial deciduous boardleaved forest. Some important indexs of community structure, such as S. H. E. C were almost equal in the same vegetation type, but differcence in slope or elevation. In the mixed and boardleaved forests, the species and number of spider were more abundant in the litter layer than in the humus layer, but was just opposite to the conifer forest.