放牧对草原植物的影响  

The effects of grazing on grassland plants

作　　者：李金花[1] 李镇清[1] 任继周[2] 

机构地区：[1]中国科学院植物研究所 [2]甘肃省草原生态研究所,甘肃兰州730020

出　　处：《草业学报》2002年第1期4-11,共8页Acta Prataculturae Sinica

基　　金：国家重点基础研究发展规划项目"草地与农牧交错带生态系统重建机理及优化生态 -生产范式"(G2 0 0 0 0 1 860 7) ;中国科学院知识创新项目 (KSCX2 - 1 - 0 7) ;(KSCX- 1 - 0 8)

摘　　要：从退化演替与恢复演替、植物群落的物种多样性、种群繁殖特性、生殖分配对策、植物组织养分分配和氮素循环以及生产力等方面综述了放牧对草原植物的影响 ,并指出在草原生态学研究中不仅要研究放牧影响下群落的演替过程及演替方向 。The effects of grazing on grassland plants were reviewed based on the available literature. Grazing affects the process of degradation and restoration succession, diversity and productivity of plant community, population reproduction, sexual and asexual reproductive allocation, nutrition content of plant tissue and nitrogen cycling. This review also shows that some crucial questions about allocation strategies and tactics remain incompletely answered. Therefore, the effects of grazing on the plant resources allocation will continue to be a rich and very exciting area of grassland ecology.

关 键 词：放牧 草原植物 草原生态学 生殖分配 退化演替 恢复演替 

分 类 号：S812.8[农业科学—草业科学]