四川非雀形目鸟类区系的结构分析

通观种的繁殖区资料后，将文献报导的253种四川非雀形目鸟类分为11个分布类型：极地型，北半球北部型，欧亚北部型，中亚型，青藏高地型，横断-喜马拉雅山地型，中国东北及其邻区型，中国季风区型，南亚及东南亚型，东半球热带亚热带型，环球热带亚热带型；进而对有关分布型的划分作了研讨。文东对此区系的结构特点作了叙述。

AN ANALYSIS OF FAUNAL COMPOSTTION OF SICHUAN NON-PASSERIFORMES BIRDS

In addition the distribution range of species is narrow or wide-spread, 11 distribution types of Sichuan non-passerifomes birds,including 253 species, are divided by its breeding region.They are under the names of (1)the arctic region, (2)the north of Northern Hemisphere, (3)the north of Eurasia, (4)the centre Asia, (5)the higher land of Qinghai-Xizang, (6)the HengduanXimalaya Mountains, (7)the east-northern part of China and its neighbors, (8)the monsoon region of China, (9)the South and East-southem Asia, (10)the tropic and subtropic of Eastern Hemisphere, (11)the tropic and subtropic of the earth in this paper. Then we consulted the records of breeding region of 253 species and divided them into correspondent distribution type separately.The result indicated southward birds, including type 8, type 9 and type 10, are the most abundance,it is 58.6% of total in summer and 33. 3% in winter. In other hand, the species from Centre Asia, higher land of Qinghai-Xizang and Hengduan-Ximalays Mountains are also abundance despite of summer or winter