过牧、深翻及封育三种方式对退化羊草草地的影响  

The effect of Three Types of Overgrazing,Deep Harrowing,Close Nursery on the Degraded Leymus chinense Grassland.

作　　者：姜世成[1] 周道玮[1] 

机构地区：[1]东北师范大学植被生态教育部重点实验室,东北师范大学国家草地生态工程实验室,吉林长春130024

出　　处：《中国草地》2002年第5期5-9,共5页Grassland of China

基　　金：国家重点基础研究发展规划项目(G2 0 0 0 0 8186 0 0 )"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"课题 (2 0 0 0 0 186 0 6 )资助

摘　　要：在过牧、深翻和封育的条件下 ,调查了植物群落的生物多样性、植物群落的平均高度、盖度及各种植物的分布面积。结果表明 ,在封育的条件下 ,植物物种多样性增加 ,植物的平均盖度、分布面积特别是多年生植物分布面积、平均单位面积上多年生植物地上生物量最高。与深翻和过牧相比 。The biodiversity,the average height,the coverage,the area of each plant in the community under the overgrazing,deep harrowing and close unrsery condition were investigated.The results showed that the biodiversity increases and the average coverage,the area,especially the area of the perennial lpant,the biomass of the perennial plant under close nursery are the highest.The close nursery is the best method to the restoration of the degraded grassland compared with the methods of overgrazing and deep harrowing.

关 键 词：过牧 深翻 封育 退化羊草草地 改良效果 

分 类 号：S812.8[农业科学—草业科学]