南宁邕江流域地区的小型兽类及其生态景观类型的研究

Studies on the Glires faun and the type of Eco-landscapes in Yong Jiang river valley

南宁邕江流域地区小型兽类区系由３８种动物组成，分隶于３目９科，属于东洋界成分的小兽有３６种，占总种数的９４．７４％。该地区自然环境可划分为５种生态景观类型，即居民住宅生态景观区（有７种小兽分布，以黄胸鼠和小家鼠占优势）、河谷和平原生态景观区（有１６种小兽分布，以黄毛鼠和小家鼠为主，华南缺齿数量稀少）、阶地和丘陵生态景观区（有２３种小兽分布，以黄毛鼠和板齿鼠为主，有社鼠和针毛鼠分布）、低山林灌和草丛生态景观区（分布有１７种小兽，社鼠数量占优势，丛林鼠和针毛鼠次之，猪尾鼠是珍稀种类）、中山丛林生态景观区（有８种小兽分布，以松鼠科和鼯鼠科种类为主）．用笼日法在各生态景观区捕获小兽１４种，以黄胸鼠、黄毛鼠、板齿鼠和社鼠居多，猪尾鼠最低，褐家鼠、小家鼠、丛林鼠、野鼷鼠、青毛鼠和针毛鼠等居中。阶地和丘陵景观与河谷平原及低山林灌草丛景观区之间的相似性指数最高，为０．５６和０．６０；居民住宅景观与河谷平原和阶地丘陵景观之间的相似性指数居中，为０．５２和０．４０，中山丛林景观区与其他４类景观之间的相似程度在０～０．３１范围，种类组成差异有显著性。

There are 38 species of glires in Yong Jiang river valley of Guangxi province,belonging to 9 famillies and 3 orders.Among them,There are 36 species distrabution of glires,belonging to the species of the Oriental realm,making up 94.74% of total of the glires.Natural landscape forms of the Yong Jiang river range may be divided into 5 forms,they are as follows:Ⅰ.Eco-landscape area of rural resident.The Eco-landscape incluging all rural ranges,There are 7 species distrabution of glires, occupying 18.42% of the total of the species.Ⅱ.Eco-landscape area of river valleiea and platlands.There are 16 species of glires in this landscape form,occupying 42.11% of total number of glires.Ⅲ.Eco-landscape area of hills and terraces. There are 23 species of glires,occupying 60.53% of the total of the glires.Ⅳ.Eco-landscape area of bush-grasslands of low alpine.There are 17 species of total number of the glires,occupying 44.74%,predominant species of species.Ⅴ.Eco-landscape of alpine jungles area.There are only 9 species of the glires,making up 23.68%.