【作者】 田福平； 陈子萱；

【Author】 TIAN Fu-ping~1 CHEN Zi-xuan~2 (1.Lanzhou Institute of Animal and Veterinary Pharmaeeuties Sciences,Chinese Academy of Agricultural Sciences,Lanzhou,Gansu Province,730050; 2.Institute of Biotechnology,Gansu Academy of Agricultural Sciences,Lanzhou,Gansu Province,730070,China)

【机构】 中国农业科学院兰州畜牧与兽药研究所； 甘肃省农业科学院院；

【摘要】 通过补播试验表明,补播后异针茅仍然是群落优势种。各补播处理重要值平均为0.28。孔浆大戟生态位宽度最大,为0.992。最大的生态位重叠发生在紫羊茅和异针茅,以及紫羊茅和孔荥大戟之间,生态位重叠值均为0.997.它们必然会对其它种群造成抑制,成为主要的优势类群。补播对沙化草地的群落和结构的改良作用明显,有利于高寒沙化草地的恢复,可以在退化高寒草地大量推广。更多还原

【Abstract】 The Interseeding results showed that the dominant species is Stipa aliena which average important value is 0.28 in Maqu alpine desertified meadow.Niche breadth the greatest species are Eu- phorbia esula,and valued 0.992.The populations of Festuca rubra and Stipa aliena ,Festuca rubra and Euphorbia esula also had the largest niche overlap value at 0.997,which had strong ecological adapta- bility and competitiveness,they played an important role in the community succession,and will inevita- bly posed major advantage groups.Interseeding could improve the meadow quality,increase the pro- ductivity in degradation alpine meadow,which can widely generalize in degraded alpine meadow.更多还原