寿昌江流域及邻近山区溶岩洞穴大型水生底栖动物

灵栖洞、灵山洞、瑶琳洞为浙江西部山区已开发的著名观光溶岩洞穴群，灵栖洞位于寿昌江流域支流小江溪的源头附近，由灵泉、清风、霭云三洞组成，灵山洞由清虚洞、仙桥洞组成．三洞穴群内大型水生动物隶属2门3纲5目11科．灵栖洞大型水生动物群落主要由放逸短沟蜷和掌指米虾组成，灵山洞主要由硬环棱螺、放逸短沟蜷、格氏短沟蜷及水生昆虫幼体组成，瑶琳洞内主要由锯齿新米虾和扁卷螺组成．灵泉洞洞穴有光带主要分布有掌指米虾和放逸短沟蜷，弱光带主要分布有锯齿新米虾、掌指米虾和硬环棱螺，黑暗带主要分布有锯齿新米虾、掌指米虾和扁卷螺，灵泉洞有光带动物种类的多样性、均匀度指数最高，分别为0．9832和0．6109，黑暗带最低，分别为0．0983和0．1418；优势度在黑暗带最高，其值为0．6250．表3参18

LARGE BENTHIC AQUATIC ANIMALS IN CAVES ALONG THE SHOUCHANG RIVER AND ITS ADJACENT AREAS

Twelve species of the large benthic aquatic animals were collected in Lingqi caves, Lingshan caves and Yaolin caves along the Shouchang River and its adjacent areas, belonging to 2 phyla, 3 classes, 5 orders and 11 families. The dominant species included Semisulcospira libertina and Neocaridina palmata palmata in Lingqi caves, Bellamya lapidea, S. libertina, S. gredleri and aquatic insect larvae in Lingshan caves, and N. denticulata sinensis and Gyraulus compressus in Yaolin caves. The diversity index (0.983 2) and evenness index (0. 610 9) showed the highest in light belt and the highest dominance index (0. 625 0) was found in dark belt in Lingquan Cave ( one of Lingqi caves) . N. palmata palmata and S. libertina are found as dominant species in light belt, N. denticulate sinensis, N. palmata palmata and B. lapidea in reflection belt, and N. denticulate sinensis, N. palmata palmata and G. compressus in dark light belt in the cave. Tab 3, Ref 18