兰州地区的啮齿动物生态地理

A STUDY ON ECOLOGY GEOGRAPHY OF RODENTS IN LANZHOU AREA

兰州地区位于我国黄土高原的西北部。区内地貌类型以黄土梁峁、勾壑为主,还有山地与盆地,黄河由西向东贯穿兰州盆地,黄河南北两岸形成多级阶地。天然植被以干草原为主,向北逐渐出现荒漠化草原,局部的山地分布着森林和灌丛,以兴隆山和马衔山为例,除此之外,以农田所占据,在这种生态环境中分布着啮齿动物群。

Lanzhou area is in the north-west part of China's Loess Plateau. In this area , the natural environments are complex and many species of the rodents are distributed. As is known, there are 17 species of rodents. They are distributed in four different ecology types as follows: (1) Forest and Bush type: the main distribution Eutamis sibiricus and Apodemus prninsulae; (2) Dry steppe type: the main distribution Myospalax fontanierii, Citellus dauricus and Lepus tolai;(3) Desert steppe type: the main distribution Meriones meridianus, Meriones unguiculatus and Allactage sibirica; (4) Farm type: the main distribution Myospalax fontanierii, Cricetulus migratorius, Cricetulus barabensis and eutanmis sibiricus.