青海省东部地区的自然植被

THE VEGETATION IN THE EASTERN QINGHAI PROVINCE

青海省东部地区地处青藏高原和黄土高原的交汇地带。该地区受青藏高原和黄土高原的影响,自然植被与青藏高原上的高寒植被和黄土高原上的植被类型均有一定联系,从而形成该区较为复杂的植被类型。据考察,该地区的主要植被类型包括荒漠草原、草原、森林、灌丛、高寒灌丛和高寒草甸,并在该地区形成明显的垂直分布。在海拔较低的河谷低山分布着与黄土高原相连的植被类型;而海拨较高的山地则分布与青藏高原相连的高寒植被,形成有一定过渡性而又独具特色的植被景观。我们认为,该地区是青藏高原和黄土高原的过渡地带。

The eastern part of Qinghai province is located in the confluent zoneof Qinghai-Xizang plateau and Loess plateau. The natural vegetation inthis region is not only connected with alpine vegetation on the Qinghai-Xizang plateau, but also with vegetation types on the Loess plateau; andformed complex vegetation types. They are: desert-steppe, steppe, forest,scrub, high-cold scrub and high-cold meadow. There is an evident verti-cal zonal distribution of the vegetation. Because of its special geographi-cal position, the distribution of vegetation shows special pattern and land-scape. The vegetation types which is connected with Loess plateau, dis-tributes in the river valley and hills, and the alpine vegetation, which isconnected with Qinghai-Xizang plateau, on the mountains. Finally, we su-ggest that vegetation regionizationally, the eastern region of Qinghai pro-vince is the transition zone between Qinghai-Xizang plateau and Loessplateau.