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中国农学通报 ›› 2005, Vol. 21 ›› Issue (4): 306-306.

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The Research about the Variation of Meadow Types and the Conversion of Meadow Structure around

俞文政,常庆瑞,岳庆玲,唐 臻   

  • 出版日期:2005-04-05 发布日期:2005-04-05

The Research about the Variation of Meadow Types and the Conversion of Meadow Structure around

Qinghai Lake drainage area   

  • Online:2005-04-05 Published:2005-04-05

摘要: 以青海湖流域草地为研究对象,对草地类型数量、质量和结构演替进行分析,结果表明:1)流域内草地系统内部结构发生变化,草地系统严重失调,草地退化十分严重,研究期内,草地总面积面积减少413.9 km2,其动态度为2.16%。2)人类不合理利用和气候环境的变化,青海湖流域草地类型结构向破坏生态平衡的退化性方向演替,草地生态系统结构的受损,导致系统功能紊乱,使系统自维持力、生产力和抗干扰力等功能降低,使系统朝着不利于人类发展的方向演化。

Abstract: The research object was the meadow around Qinghai Lake drainage area. The quantity, quality and structure conversion of meadow types were analyzed. The results showed that: (1) the inner structure of meadow system had been changed. The meadow system was ba