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当前位置: 首页 > 文章 > 东祁连山不同高寒草地型土壤微生物数量分布特征研究 农业环境科学学报 2007,26 (06) 106-113
Position: Home > Articles > The Characteristics of Soil Microorganism Quantity Under Different Alpine Grasslands in Eastern Qilian Mountain Journal of Agro-Environment Science 2007,26 (06) 106-113

东祁连山不同高寒草地型土壤微生物数量分布特征研究

作  者：
丁玲玲;祁彪;尚占环;龙瑞军;周启星
单  位：
辽宁沈阳110016中国科学院研究生院;中国科学院沈阳应用生态研究所陆地生态过程重点实验室;兰州大学草地农业科技学院;兰州大学青藏高原草地与牦牛研究中心 兰州大学草地农业科技学院;兰州大学青藏高原草地与牦牛研究中心
关键词：
东祁连山;高寒草地型;土壤微生物;数量特征
摘  要：
通过现场采样,室内培养与观察、测定,对青藏高原东祁连山6种不同的高寒草地型土壤微生物数量的生态分布、季节动态的特征,以及与相关生态因子的关系进行比较分析。结果表明,不同高寒草地型土壤微生物数量及细菌、放线菌和真菌类群组成比例均存在较大差异。土壤微生物数量的季节动态变化总体表现为5月(牧草返青不久)数量最高,7月中旬有所下降,11月份的数量最少。土壤微生物数量在表土层(0～10cm)居多。土壤微生物总数与土壤全N相关极显著,与土壤有机C、土壤微生物量氮(Nmic)和地下植物生物量的线性相关显著,而与土壤C/N比值和土壤微生物量碳(Cmic)之间的线性相关不显著。
译  名：
The Characteristics of Soil Microorganism Quantity Under Different Alpine Grasslands in Eastern Qilian Mountain
作  者：
DING Ling-ling1,3,Qi Biao1,SHANG Zhan-huan2,LONG Rui-jun2,ZHOU Qi-xing1 (1. Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, CAS, Shenyang 110016, China; 2. Center for Tibetan Grassland and Yak Studies of Lanzhou University, College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou 730020, China; 3. Graduate School of Chinese Academy of Science, Beijing 100039, China)
关键词：
Eastern QiLian Mountain;Alpine Grassland types;soil microbial;quantity property
摘  要：
Six different representative Alpine grassland types in Eastern Qilian Mountain were selected to investigate the ecological distributions and the seasonal dynamics of their soil microorganism communities. The relationships between it and soil chemical properties were also analyzed. The results showed that the amount of soil microorganism and the community composition differed significantly with different grassland types. The amount of soil microorganism was the most in May after the grass turned green, and was more in July which exhibited the least in November. The soil microorganism was mainly concentrated in upper layer (0～10 cm) and was more than that in 10～20 m layer. In terms of the relationship between total soil microorganism quantity and soil properties, it showed an extremely positive one between it and total soil nitrogen, and a positive one between it and soil organic carbon, microorganism biomass nitrogen (Nmic) and the underground biomass of plant. However, the relationship between it and soil microorganism biomass carbon (Cmic), the ratio to soil organic carbon and total soil nitrogen, microorganism biomass nitrogen were not significant.

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