Influences of Different Use Patterns on Soil Microbial Population of Leymus chinensis Steppes in the Northeast of China

doi:10.11733/j.issn.1007-0435.2012.05.008

›› 2012, Vol. 20 ›› Issue (5): 842-847.DOI: 10.11733/j.issn.1007-0435.2012.05.008

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Influences of Different Use Patterns on Soil Microbial Population of Leymus chinensis Steppes in the Northeast of China

ZHU Rui-fen, TANG Feng-lan, ZHANG Yue-xue, LIU Jie-lin, LIU Feng-qi, CHEN Ji-shan

Institute of Pratacultural Science, Heilongjiang Academy of Agricultural Science, Harbin, Heilongjiang Province 150086, China

Received:2012-04-11 Revised:2012-06-27 Online:2012-10-15 Published:2012-11-01

不同利用方式对东北羊草草地土壤微生物数量的影响

朱瑞芬, 唐凤兰, 张月学, 刘杰琳, 刘凤岐, 陈积山

黑龙江省农科院草业研究所, 黑龙江哈尔滨 150086

通讯作者: 唐凤兰,E-mail:gscjs2008@yahoo.com.cn
作者简介:朱瑞芬(1982-),女,甘肃省礼人,助理研究员,硕士,主要从事豆科牧草根瘤菌方面的研究,E-mail:zhuruifen1983@yahoo.com.cn
基金资助:
农业科技成果转化资金项目(2011GB2B200005);黑龙江省农业科技创新工程种子创新基金项目(2010-10);国家国际科技合作项目(2011DFR30840-11)资助

Abstract

Abstract: Leymus chinensis from steppes of northeast China was selected to investigate contents of soil microbial Population (fungi, bacteria and actinomycetes) under different use patterns. Results are as follows: soil microbial population in fenced grassland is higher than outside fenced. The number of soil microbial population is ordered as fenced mowing grassland >grazing grassland. In three communities (sp1, sp2 and sp3), the number of soil microbial population is ordered as sp1>sp3>sp2. In mowing grassland or grazing grassland,the number and distribution of soil microorganisms (fungi, bacteria and actinomycetes) are different among three plant communities.The number of fungi is order as sp1>sp3>sp2; the number of bacteria is ordered as sp3>sp1>sp2; the number of actinomycete is ordered as sp1>sp3>sp2. The number of soil microorganisms greatly varies with soil depth so that the number is much higher within 0~15 cm than that within 15~30 cm (2~4 times). Among microorganisms, the number of bacteria is the highest and the number of fungi is the lowest. There is a closely correlation between sp1, sp2 aboveground biomass, and the number of fungi in mowing grassland, but this phenomenon is not observed in grazing grassland.

Key words: Leymus chinensis steppes, Monwing and grazing, Soil microorganisms, Population dynamics

摘要： 不同利用方式下(刈割和放牧),比较了羊草(Leymus chinensis)草地土壤微生物多样性(真菌、细菌和放线菌)及群落结构的数量变化。结果表明:土壤微生物的数量在不同利用方式下表现为:刈割草地>放牧草地,在不同植物群落中表现为:羊草群落>杂类草群落>碱茅(Puccinellia distans)群落。无论在刈割还是放牧区,真菌的分布为:羊草群落>杂类草群落>碱茅群落;细菌的分布为:杂类草群落>羊草群落>碱茅群落;放线菌为:羊草群落>杂类草群落>碱茅群落。土壤微生物随土层垂直递减分布,在土层0~15 cm土壤微生物分布最多。3类微生物中,细菌数量最大, 放线菌次之, 真菌最小。相关性分析表明,只在刈割方式下羊草群落(sp1)和碱茅群落(sp2)土壤的微生物数量与地上生物量显著相关(P<0.05),其余相关性均不显著。

关键词: 羊草草地, 刈割和放牧, 微生物数量, 生物量

CLC Number:

S154.36

ZHU Rui-fen, TANG Feng-lan, ZHANG Yue-xue, LIU Jie-lin, LIU Feng-qi, CHEN Ji-shan. Influences of Different Use Patterns on Soil Microbial Population of Leymus chinensis Steppes in the Northeast of China[J]. , 2012, 20(5): 842-847.

朱瑞芬, 唐凤兰, 张月学, 刘杰琳, 刘凤岐, 陈积山. 不同利用方式对东北羊草草地土壤微生物数量的影响[J]. , 2012, 20(5): 842-847.

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Influences of Different Use Patterns on Soil Microbial Population of Leymus chinensis Steppes in the Northeast of China

不同利用方式对东北羊草草地土壤微生物数量的影响

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