青藏高原多年冻土地区公路建设对植被类型的影响  

Effect of the road construction on the vegetation type in the multiyear frozen-soil region on the Qinghai-tibetan plateau

作　　者：尚永成[1] 张小华[1] 

机构地区：[1]青海省草原总站,青海西宁810008

出　　处：《草业科学》2005年第12期17-19,共3页Pratacultural Science

摘　　要：在查阅相关资料的基础上,采用常规草地调查的方法进行了实地调查。结果显示:随着生态因子发生变化和人类活动的加剧,该区公路沿线高寒草甸类草地群落结构表现出了较强的稳定性,中旱生耐旱的根茎型禾草比重有所增加;高寒草原植物群落稳定性相对较差,草地群落为适应新的生境而发生了自然演替;沼泽化草甸亚类草地植物群落中群落伴生种的种类增加,优势种嵩草属植物在群落中的比重有所下降。On base of consulting relevant data, field survey was done using normal grassland survey method. The result indicated that. with the change of ecological factors and intensification of human activities, strong stability of grassland community structure of the local alpine meadow type along the highway in this region was found, proportion of medium xerophilous,rhizomous grass increased; alpine grassland community had relatively low stability, grassland community successed naturally to adapt to the new environment; in the sub grassland type, marsh meadow , companion species in the community increased, proportion of the dominant kobresia species decreased to some extent.

关 键 词：冻土地区 公路建设 植被类型 影响 

分 类 号：Q948.15[生物学—植物学]