节点文献
典型草原种群特征对放牧制度的响应
Response of Population Feature to Different Grazing Systems in Typical Steppe.
【摘要】 采用放牧形式研究典型草原不同放牧制度群落动态变化规律。结果表明,牧草生长季前期干旱年份(2001年),划区轮牧区月现存量、生长量、生产力都显著高于自由放牧区(P<0.05),而在降雨充沛的年份(2002年),两放牧处理无显著差异(P>0.05);划区轮牧区的优势种的密度、高度、盖度以及重要值在两年均高于自由放牧区(P<0.05)。
【Abstract】 The experiment on grazing systems was conducted in the typical steppe with sheep.The results showed that the standing crop, production and growth in rotational grazing were higher than that in continuous grazing(P<0.05) in the drought year.There was no significant difference(P>0.05)on standing crop,production and growth in two grazing systems in the normal year. The density, height,coverage and importance value of dominant species in plant community in rotational grazing were higher than that in continuous grazing(P<0.05) in the two years.
【关键词】 典型草原；
种群特征；
放牧制度；
牧草现存量；
【Key words】 Typical steppe； Population feature； Grazing systems； Standing crop；
【Key words】 Typical steppe； Population feature； Grazing systems； Standing crop；
【基金】 中科院知识创新项目(KSCX1-08);内蒙古"十五"重点攻关项目(20010607)
- 【文献出处】 中国草地 ,Grassland of China , 编辑部邮箱 ,2003年06期
- 【分类号】S812.8
- 【被引频次】58
- 【下载频次】263