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)。
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.
出处
《中国草地》
CSCD
2003年第6期1-5,共5页
Grassland of China
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)
