甘肃叶蜂区系和生物地理研究

系统调查研究了甘肃叶蜂生物地理分布特征,提出了甘肃叶蜂地理区划新方案,将甘肃叶蜂地理区划为2界3区5小区。东洋界,仅包括华中区(Ⅰ);古北界,分蒙新区(Ⅱ)和青藏高原区(Ⅲ),蒙新区包括蒙新陇中黄土高原小区(Ⅱ-1)、蒙新陇东黄土高原小区(Ⅱ-2)和蒙新河西走廊小区(Ⅱ-3),青藏高原区包括青藏高原祁连山地小区(Ⅲ-1)和青藏高原甘南小区(Ⅲ-2)。分析、讨论了甘肃叶蜂的基本分布规律以及甘肃已知9科、494种叶蜂的区系成分和生物地理分布特征:在甘肃叶蜂地理分布类型中,蒙新陇中黄土高原小区是甘肃叶蜂的分布中心;和东亚型成分构成中国叶蜂区系的主体一致,东亚型成分也是甘肃叶蜂区系的主体。

Study on the Sawfly Fauna and Biogeography in Gansu Province

The character of sawfly distribution in Gansu province was studied and a new frame of sawfly faunal division in Gansu was also proposed, which divided Gansu sawfly fauna into two realms, three regions and five districts. The two realms were Oriental Realm and Plearctic Realm. The former one only included Central China Region （Ⅰ）, and the other one included Mengxin （Neimeng and Xinjiang） Region （Ⅱ） and Qinghai-Tibet Plateau Region （Ⅲ）o The Mengxin Region in Gansu was divided into Central Long ＆ Loess Plateau District （Ⅱ-1）, Easten Long ＆ Loess plateau District （Ⅱ-2） and Western Yellow River Corridor District （Ⅱ-3）. The Qinghai-Tibet Plateau Region in Gansu was divided into Qilian Mountain District （Ⅲ-1） and Gannan （Southern Gansu） District （Ⅲ-2）. The faunal dements and distribution patterns of Gansu sawflies were briefly discussed, as well as the distribution characters of the 9 families and 494 species of sawflies from Gansu： Central Long ＆ Loess Plateau District （Ⅲ-1） was the main distribution centre of Gansu sawfly fauna; concordant to the Chinese sawfly fauna, the Eastern Asian faunal element was the core of the Gansu sawfly fauna.