青海大通种牛场草地类型及其垂直分布的调查研究

Grassland types and their vertical distribution on the Datong Cattle Farm in Qinghai, China

根据野外调查和中国草地类型分类法,对青海省大通种牛场草地类型及其垂直分布进行了分析研究。结果表明:大通种牛场草地可划分为3个草地类:低地草甸类、山地草甸类和高寒草甸类,15个草地型。宝库河两侧滩地、河谷地为低地草甸类,海拔3050～3230m山地阴坡为山地灌丛草甸、阳坡为山地草甸,3230～3400m为高寒灌丛草甸或高寒草甸类;3400m以上为高寒草甸类,草地类型垂直分布明显。为改良和利用草地资源提供科学依据。

According to field investigation and the Chinese method of grassland classification, analysis was made of the grassland types and their vertical distribution on the Datong Cattle Farm in Qinghai. The results indicated that the farm could be divided into three grassland groups, namely, lowland meadow, hill meadow, and alpine meadow, consisting of fifteen grassland types. On the two sides of the Baoku River, the vertical distribution of grassland types was obvious, with beach land and river valley land next to the river classified as lowland meadow, followed by hill shrub-meadow on the shady slopes and hill meadow on sunny slopes at elevation of 3 050～3 230 m, alpine shrub-meadow or alpine meadow at 3 230～3 400 m, and 3 400 m upwards was classified as alpine meadow. This paper provides a scientific basic for the improvement and utilization of grassland resources.