palaearctic

It has a special geography and multiplex ecological environment. The Zoogeographical division of Gansu across Oriental and Palaearctic.

地理位置特殊，生态环境多样；在动物地理区划上地跨东洋界和古北界。

From Palaearctic to Oriental 4 widely distributed species, occupying 10.8 %.

古北—东洋广布种4种, 占10.8%.

36 Oriental-Palaearctic species, occupying 20.93%.

东洋、古北二界共有种36种，占总数的20.93%。

The avian fauna are composed of 68 Palaearctic realm species ( 41.21 % ), 90 Oriental realm species ( 54.54 % ) and 7 Eurytopic species ( 4.24 % ).

从地理型分析,东洋界种有90种 ( 54.54% ),古北界种68种 ( 41.21% ), 广布种7种 ( 42.24% ).

The biogeographical territory of China spans Palaearctic and Oriental region, which results in a rich diversity of butterfly species.

中国地跨古北区和东洋区，蝶类生物多样性非常丰富。

For the avifauna, the birds in this study were dominated by the palaearctic element.

鸟类区系以古北界成分为主。

Geographical distribution includes 41 palaearctic species, 76 oriental species and 23 cosmopolitan species;

其中，古北种41种，东洋种76种，广布种23种；

Species ( 1.23%) is the Oriental, Palaearctic and Nearctic.

东洋界、古北界和新北界共有种为1种，比重为1.23%。

based on data for the zoogeographic distribution of genera and subgenera, it is noted that genera are majorly distributed in the palaearctic, the nearctic and the oriental region.

概述了洼甲螨科各属（亚属）的地理分布，指出该科目前所知分布较多的是古北界、新北界、东洋界；

The 23 species ( 88.46 % ) belonged to Oriental realm and 3 species ( 11.54 % ) belonged to Palaearctic realm.

其中东洋界有23种,占88.46%;古北界3种,占11.54%.

Among 55 species of breeding birds, 38 species ( 69.1%) are Palaearctic ones, indicating that Palaearctic species is the major component in the avifauna.

55种繁殖鸟类中古北种有38种，占繁殖鸟总数的69.1%，区系上明显以古北界成分为主。

11 species ( 13.58%) are both the Oriental and Palaearctic;

东洋界、古北界共有种为11种，比重达13.58%；

Among breeding birds, thethe Palaearctic species and Oriental species, which shows more characseristics of Oriental realm.

在繁殖鸟中古北界种类与东洋界种类之比为1:3.87,偏重于东洋界.

The avian fauna are composed of 68 Palaearctic realm species ( 41.21%), 90 Oriental realm species ( 54.54%) and 7 Eurytopic species ( 4.24%).

从地理型分析，东洋界种有90种（54.54%），古北界种68种（41.21%），广布种7种（42.24%）。

171 species are Oriental species, 4 species are Palaearctic species.

在202种繁殖鸟类中，东洋种为优势类群，共有171种，古北种和广布种分别为4种、27种。

Great Gerbil ( Rhombomys opimus) is a typical desert rodent species in the desert and semi-desert habitats in central Asia, so it is regarded as one of the indicator species of Palaearctic desert and semi-desert.

大沙鼠（Rhombomys opimus）是中亚地区典型的荒漠啮齿动物，栖息于荒漠、半荒漠中，是古北区荒漠、半荒漠景观中生物多样性的指示物种之一。

The summer birds, resident birds, travel birds and winter birds are respectively 23, 21, 11, 2. The species of Palaearctic realm, widespread and Oriental realm are respectively 29, 22, 6.

夏候鸟、留鸟、旅鸟、冬候鸟分别为23、21、11、2种；古北界、广布种、东洋界鸟类分别为29、22、6种。

China is often known for bestriding Palaearctic and Oriental biogeographic realm, but the precise pision east of Qinling Mountain is not specific all the while.

我国动物地理区划向以横跨古北界和东洋界而著称，但两界在我国东部即秦岭以东地区的精确划界始终没有明确的认识。

Pleistocene distributional and evolutionary history of the genus Saiga gray, 1843 ( mammalia, artiodactyla, bovidae) in the Palaearctic

古北区Saiga属（偶蹄目，牛科）在更新世时期的地理分布和进化历史