摘要
本研究于1994年在湖南省南山牧场进行。聚类分析表明，放牧导致多年生黑麦草（Loliumperenne）／白三叶（Trifoliumrepens）人工草地的演替可以划分为四个阶段，即轻牧使人工草地向原生植被演替，形成野古草（Arundinellahirta）、芒草（Miscanthussinensis）占优势的群落；重牧导致绒毛草（Holcuslantus）、多头苦荬菜（Ixerispolycephala）占优势的群落出现；过牧则形成橐吾（Ligulariasp）、酸模（Rumexacetosa）占优势的群落；唯有适牧方可以维持多年生黑麦草／白三叶人工草地的稳定性。轻度放牧或过度放牧都可以引起人工草地的退化演替。
Grazing succession and stability of community were studied in Nanshan Ranch (25°48′ - 25°58′N, 110°36′- 110°40′ E)during 1994. It showed by cluster analysis that grazing lead to succession in mixed sward of perennial ryegrass/white clover. The succession can be divided into four stages: i. e. Arundinella hirta + Miscanthus sinensis community for light grazing, Holcus lantus+ Ixeris polycephala community for heavy grazing, Ligularia sp. +Rumex acetosa community for over ging and Lolium perenne + Trifolium repens commnuity for moderate grazing. Moderate grazing can maintain community stability of artificial sward. Light grazing or over grazing lead to deteriorative succession of artificial sward.
出处
《草地学报》
CAS
CSCD
1995年第2期152-157,共6页
Acta Agrestia Sinica
基金
"八五"国家科技攻关项目!85-011-02-02
关键词
人工草地
放牧
演替
稳定性
白三叶
黑麦草
Artificial sward
Grazing
Succession
Stability
Cluster analysis
