Abstract: This article discussed the reasons, distribution, areas, the interpretative keys of thealpine grassland and its degenerated gusland in Dari county, Qinzhang Plateau Bayankela Mountains,Qinghai province.It divided the grasland into five types, two subtypes and three degenerate grassland.Special emphasis was paid to find out reason for degeneraion and interpretative marks of landsat image.The results show, the local region of alpine meadow pastureland in Qingzhang plateau, carrying capacity ofpastureland were close relations with physicochemical charateristics of soil parent maerial.To make sci-entific and proper carrying capacity must be considered on the parent maerials of natural pastureland soil.

Key words: Alpine meadow, Degenerate grassland, Remote sensing techniques, Qingzhang plateau

摘要： 应用遥感技术,探讨了青藏高原巴颜喀拉山北坡,青海省达回县段退化高寒草甸草原的类型、分布、面积和遥感判译标志。将研究区内高寒草甸划分为五个类,两个亚类和三个退化草原型。重点分析了高山草甸草原退化的主要原因和遥感影像特征。研究结果表明,青藏高原高寒草甸牧业区,局部草甸载畜能力与局部草甸成土母质的理化特性密切相关。制定科学合理的放牧载畜量应考虑成土母质因素。

关键词: 高寒草甸, 退化草原, 遥感技术, 青藏高原