]*>","")" /> Effect of Long-term Fencing Closure on Soil Microbe in Mountain Pasture of Bayanbulak

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Effect of Long-term Fencing Closure on Soil Microbe in Mountain Pasture of Bayanbulak

CAO Ye-fei;FANG Guang-xin;JIANG Ping-an;JIA Hong-tao;LI Yun   

  • Received:2008-02-25 Revised:2008-02-25 Online:2008-02-25 Published:2008-02-25

长期围栏封育对巴音布鲁克山地草原土壤微生物的影响

曹叶飞;方光新;蒋平安;贾宏涛;李赟   

  1. 新疆农业大学资源环境学院,乌鲁木齐,830052;新疆畜牧厅项目办,乌鲁木齐,830000

摘要: 选择中科院巴音布鲁克生态站长期围栏封育的草原作为研究对象,对新疆巴音布鲁克三种草地类型--亚高山草原、亚高山草原化草甸、亚高山草甸化草原进行野外实地监测,研究了长期围栏封育对草地土壤微生物的影响,研究结果表明亚高山草原、亚高山草甸化草原、亚高山草原化草甸围栏内外的细菌群落组成占土壤微生物总量的50;以上,放线菌次之,真菌最少;三种草地类型的0~10 cm土层的微生物数量占0~60 cm土层微生物总数的40;~90;,具明显表聚性,在0~60 cm土层中微生物数量随剖面深度加深而递减;在围栏对土壤微生物总数的影响上,亚高山草原、亚高山草甸化草原、围栏内微生物数量明显高于围栏外,且围栏内外差异显著.