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当前位置: 首页 > 文章 > 江河源区退化高寒草地土壤微生物与地上植被及土壤环境的关系 草业学报 2007,16 (1) 34-40
Position: Home > Articles > Relationship between soil microorganisms,above-ground vegetation,and soil environment of degraded alpine meadows in the headwater areas of the Yangtze and Yellow Rivers,Qinghai-Tibetan Plateau Acta Prataculturae Sinica 2007,16 (1) 34-40

江河源区退化高寒草地土壤微生物与地上植被及土壤环境的关系

作  者：
尚占环;丁玲玲;龙瑞军;马玉寿
单  位：
兰州大学草地农业科技学院农业部草地农业生态系统学重点开放实验室;青海省畜牧兽医科学院草原研究所;中国科学院沈阳应用生态研究所
关键词：
江河源区;退化高寒草地;土壤微生物;土壤环境
摘  要：
对青藏高原江河源区退化高寒草地土壤微生物与地上植被、土壤环境的相关性进行分析。结果表明,退化高寒草地植物多样性、物种组成、地上植被盖度、草地生产力的变化引起土壤微生物数量发生变化,土壤微生物特别是细菌生理类群受土壤环境因子影响较大。江河源区退化高寒草地土壤中非有益性微生物功能群处于增加趋势,限制了土壤养分供给和转化能力,不利于草地土壤肥力维持和提高,给受损高寒草地,特别是“黑土滩”退化草地的生态恢复带来困难。因此,在修复受损高寒草地生态系统时,不仅要恢复地上部分的植被,而且要恢复地下部分的土壤微生物群落,重建土壤微生物生态系统。
译  名：
Relationship between soil microorganisms,above-ground vegetation,and soil environment of degraded alpine meadows in the headwater areas of the Yangtze and Yellow Rivers,Qinghai-Tibetan Plateau
作  者：
SHANG Zhan-huan1,DING Ling-ling2,LONG Rui-jun1,MA Yu-shou3 (1.Key Laboratory of Grassland Agro-Ecosystem Ministry of Agriculture, College of Pastoral AgricultureScience and Technology,Lanzhou University,Lanzhou 730020,China;2.Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,China;3.Institute of Grassland Science,QinghaiAcademy of Animal and Veterinary Science,Xining 810016,China)
关键词：
the headwater area of the Yangtze and Yellow Rivers;degraded alpine cold meadows;soil microorganism;soil environment
摘  要：
The relationship between soil microorganism numbers and vegetation,soil factors of degraded alpine meadows(in the headwater areas of the Yangtze and Yellow Rivers in China) were studied.Soil microorganism numbers changed following variation of plant diversity,species composition,vegetation coverage,grassland production of degraded meadow.Several bacterial physiological groups were considerably affected by soil factors.Non-beneficial soil microorganism increased in degraded grassland,especially in 'black soil land',limiting the soil's ability to supply and transform nutrients.In degenerating alpine meadow,beneficial soil microorganisms were unable to maintain and improve the fertility and this can lead to difficulty in rebuilding degraded 'black soil land' meadow.In conclusion,to recover degraded alpine cold meadow,it is not only necessary to rebuild or renovate the above ground vegetation,but also to rebuild the underground soil microorganism community and ecological system.

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