武夷山自然保护区陆生贝类物种多样性研究

采用样方法对武夷山自然保护区陆生贝类多样性进行调查研究,结果表明:通过三港、皮坑和挂墩3地14种不同生境140个样方,共获得陆生贝类标本6903号。经鉴定,该区陆生贝类计60种,分属于2亚纲4目18科34属;其中有新种1个(蛹形弯螺Sinoennea pupoidea sp.nov.),国内新记录种2个,福建省新记录种33个。区系成分主要为东洋界成分,伴随少量古北界渗透,涵盖了华中区、华南区、西南区、华北区、东北区和少量广布种。经多样性分析,在不同生境中陆生贝类物种组成及科、属的变化趋势相似,以森林生境中最高,其中又以三港森林的物种总数最多;村庄和农田生境中物种数最少,组成也最单一;灌丛、竹林、茶园生境中物种组成和数量分布居中;丰富度dMA、香农-威纳指数H'、均匀度Jsw和单纯度P 4个多样性测度指数中,dMA和H'的变化规律相似,且变化范围较大,均以森林生境为最高,村庄、农田生境最低,显示出森林为陆生贝类物种多样性程度最高的生境;Jsw指数各生境中变化起伏不大;P和H'2个指数呈相反变化,但二者反映的结果相同。

Study on Species Diversity of Land Seashell in Wuyi Mountain Nature Reserve

Species diversity of land seashell in Wuyi Mountain Nature Reserve was studied in this paper.Results showed that the work was undertaken in 14 different habitats of 3 districts,that were,Sangang,Pikeng and Guadun.6903 specimens were collected in total of 140 sites,and 60 species belonging to 2 subclasses,4 orders,18 families,and 34 genera were recognized,including 1 new species(Sinoennea pupoidea sp.nov.),2 new record species in China and 33 new record species in Fujian.Most of species belonged to the Oriental realm and a few species belonged to the Palaearctic realm in the natural reserve.The fauna of land seashell in Wuyi Mountain Nature Reserve was quite abundant including Central China district,Southern China district,South-Western district,North-Eastern district,Northern China district and some other widespread species.The results of diversity analysis showed that forest habitat,especially in Sangang had the most abundant diversity considering species,genera and family compared with other habitats.On the contrary,the habitats of the village and farmland hold the lowest species diversity.Species composition and quantity of shrubs,bamboo and tea habitat were in the middle.Richness index(dMA),Shannon-Wiener index(H′),evenness index(Jsw) and simplicity index(P) were computed for the 14 habitats.The results indicated that the change of richness index(dMA) was accordant with Shannon-Wiener index(H′),which both had the highest value in forest habitats and lowest value in village and farmland habitats.Evenness index(Jsw) had no obviously difference from all the habitats because of its special characteristic.Simplicity index(P) generally showed opposite value from Shannon-Wiener index(H′),both reflected the same result.