兽类学报

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祁连山东段高原鼢鼠洞道土壤微生物和土壤酶

姬程鹏 杨思维 周延山 楚彬 花立民   

  1. 甘肃农业大学草业学院
  • 出版日期:2017-08-14 发布日期:2017-07-05

Soil microorganisms and enzymes in burrows of plateau zokor in eastern Qilian Mountain region

JI Chengpeng, YANG Siwei, ZHOU Yanshan, CHU Bin,HUA Limin   

  1. Gansu Agriculture University
  • Online:2017-08-14 Published:2017-07-05

摘要: 高原鼢鼠繁杂的洞道系统对高寒草甸土壤的理化性质有着重要影响。本研究采集高原鼢鼠活动洞道土壤样本,并以无鼢鼠扰动的同深度土层土壤作为对照。对比分析了2个处理土壤微生物(细菌、真菌、放线菌)、土壤酶(脲酶、蔗糖酶、碱性磷酸酶)活性以及土壤全氮、有机质、速效磷含量的差异。结果表明:高原鼢鼠洞道土壤速效磷和全氮的含量均高于对照,其中春季和秋季的速效磷达到显著水平(P<0.05);秋季无鼢鼠扰动的土壤有机质和真菌的含量显著高于洞道土壤(P<0.05);3种酶活性各处理间无显著差异(P>0.05);对照区春季土壤的细菌和秋季真菌的含量显著高于洞道土壤(P<0.05);洞道和对照区土壤的细菌、放线菌、速效磷、全氮和有机质的含量均在夏季达到最大值,各种指标其它月份差异不显著(P>0.05)。基于以上结果,本研究发现高原鼢鼠活动洞道土壤微生物和土壤酶与对照区土壤无显著差异(P>0.05)。

关键词: 微生物, 酶, 高原鼢鼠, 洞道

Abstract:

The complex burrowing system of Plateau Zokor has an important influence on soil physical and chemical characteristics in alpine meadows. Soil samples taken at burrow sites of zokors were compared with those of non-burrow soil samples collected in the same soil layer in surrounding areas without disturbance oby zokors. We measured soil microorganisms (bacteria, fungi, actinomycetes), soil enzymes (urease, invertase, alkaline phosphatase) and soil total nitrogen and organic matter, as well as available phosphorus in active burrow and non-burrow soil .Our results showed that the content of available phosphorus and total nitrogen in burrows of zokor were higher than those of non-burrow soil; the content of available phosphorus differed significantly in May and October (P<0.05); the content of organic matter and fungi in non-burrow soil were significantly higher than that of burrows (P<0.05); there were no significant differences in activities of three soil enzymes between active burrow and non-burrow soil (P>0.05); the content of soil bacteria in May and fungi in October in non-burrow soil were significantly higher than that of the burrows (P<0.05); soil bacteria, actinomycetes, available phosphorus, total nitrogen and organic matter reached maximum values in both the burrow and non-burrow soil in August , these indices were not significantly different between burrow and non-burrow soil in the other months (P>0.05). Based on the above results, we concluded that the soil microorganism and soil enzyme were not significantly different between burrow and non-burrow soil (P>0.05).
 

Key words: Burrow, Enzyme, Microorganism, Plateau zokor