作为青藏高原组成部分的川西北高寒牧区,为我国温带草原的一特殊地域。其牧草植物,除具有温带草原的共同特征外,还有着高寒环境所赋予的特点。探讨高寒牧区主栽草种与温带种类在需温特性上的差异,及地域间的类型分化,对明确高寒牧区草种的水热生态适应特点和类型 As an integral part of the Qinghai-Tibet Plateau in western Sichuan alpine pastoral area, for our temperate grassland in a special area. In addition to its common features of temperate grasslands, its forage plants are also characterized by the alpine environment. This paper discusses the differences in the temperature-dependent characteristics of the main grass species and temperate species in the alpine pastoral areas and their geographical differentiation. It is of great significance to clarify the characteristics and types of hydrothermal ecological adaptation of grass species in the alpine pastoral areas