宁夏草原昆虫区系分析及生态地理分布特点

宁夏草原昆虫已知21目207科1374种，选择其中有代表性的金龟类（Scarabaeoidea）、蝗虫类（Othoptera）、蝶类（Rhopalocera）、夜蛾科（Noctuidae）和蝽科（Pentatomidae）5个类群，结合宁夏生态地理实际分析其区系组成特点，并对草原昆虫的一般地域分布和垂直分布进行基本分析，据此提出宁夏昆虫生态地理区划的初步意见，即3个区：六盘山森林草原昆虫区；黄土高原干草原昆虫区；荒漠半荒漠草原昆虫区。荒漠半荒漠草原昆虫区又分3个亚区：贺兰山、罗山草原昆虫亚区；河套绿洲草原昆虫亚区；荒漠半荒漠草原昆虫亚区。

Analysis of Ningxia Grassland Insect Fauna and Characteristics of its Ecological and Geographic Distribution

According to research reports,1374 species of grassland insects which are classified into 207 families and 21 orders have been recorded in Ningxia Province. Among all of these species, five characteristic ones were selected out for analysis, they were Scarabaeoidea, Othoptera, Rhopalocera,Noctuidae,and Pentatomidae. Upon Ningxia ecological and zoogeographic situations and analysis of the fauna composition natures, grassland insects general region distribution and vertical distribution were basically analysed. Therefore,a tentative suggestion was formed for Ningxia grassland insects eco-geolographical fauna,namely three faunas and three sub-faunas.They are: Liupan Mountain Forest-Grassland Insect Fuana, Loess Plateau Arid- Grassland Insect Fauna, and Desert and Semidesert Grassland Insect Fauna. The third fauna was re-divided into three Sub-faunas:Helan Mountain,Luo Mountain Grassland Insect Sub-fauna,Hetao OasisGrassland Insect Sub-fauna: Desert and Semidesert Grassland Insect Sub-fauna.