摘要
过度放牧导致微生物各类群数量减少，酶活性降低，围栏封育和适度放牧有助于上述指标的恢复．火烧和施肥措施使微生物的区系组成发生变化，周期性应用更为合理．
Artifical factors such as grazing et al. have an effect on the soil microbial numbers and the soil biological activities in degenerative steppe. Excessive grazing leads to decrease of microbial numbers and descend of enzymic activities in steppe soil,fencing without grazing and moderate grazing contribte to rest oring of the indication. Application of burning and fertilizer in steppe change the numbers of microorganism of different groups,suitable for periodical used.
出处
《内蒙古大学学报（自然科学版）》
CAS
CSCD
1996年第4期568-572,共5页
Journal of Inner Mongolia University：Natural Science Edition
基金
内蒙古青年科学基金
关键词
放牧
土壤
微生物
生物活性
草原
人为因素
grazing
fire
fertilizer
degenerative steppe
soil
microorganisms biological activity
