Impacts of elevated CO2 and temperature on the soil fauna of boreal forests
Impacts of elevated CO2 and temperature on the soil fauna of boreal forests
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DOI：
10.1016/j.apsoil.2005.02.006
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发表时间：
2005-10-01
影响因子：
4.8
通讯作者：
Niemelä, P
中科院分区：
文献类型：
--
作者：
Haimi, J;Laamanen, J;Niemelä, P
通过在地面面积为5.9 m2的封闭野外试验箱中取样，研究了北方针叶林中优势土壤分解动物（enchytraeids和微型节肢动物）对CO2浓度升高和温度升高的反应。在研究中发现了六种enchytraieds，其中Cognettia cagnetorum占所有个体的87%。各处理对稻曲病菌的数量无显著影响。甲螨无处理诱导的变化，但螨的数量最低的室内与CO，浓度升高，并在那些与温度升高。该商会有较低的密度actinided和oppioid螨和少年Nothroidea比未封闭的地块。跳虫的总数和几种跳虫物种的丰度也低于室内比室外。此外，最丰富的跳虫属和种，Mesaphorura和Isotomiella minor，分别受到了负面影响的商会。总的来说，我们的研究结果表明，温度升高只有轻微的影响，和空气中的CO2浓度升高没有影响大多数的分解动物在研究现场。此外，我们的研究结果强调，外壳的效果时，必须考虑到使用封闭的腔室进行实验。(c)2005 Elsevier B.V.保留所有权利。
Responses of dominant soil decomposer animals in northern coniferous forests, enchytraeids and microarthropods, to elevated CO2 concentration and temperature were studied by sampling an experiment consisting of closed field chambers with a ground area of 5.9 m(2). Six species of enchytraieds were found in the study, with Cognettia sphagnetorum comprising 87% of all individuals. The treatments did not significantly affect the numbers of C sphagnetorum. No treatment induced changes were found in oribatid mites, but numbers of acaridid mites were lowest in the chambers with elevated CO, concentration and in those with elevated temperature. The chambers had lower densities of actinedid and oppioid mites and juvenile Nothroidea than unenclosed plots. Total numbers of collembolans and abundances of several collembolan species were also lower inside than outside the chambers. In addition, the most abundant collembolan genera and species, Mesaphorura and Isotomiella minor, respectively, were negatively affected by the chambers. Overall, our results revealed that increasing temperature had only minor effects, and elevated air CO2, concentration had no effects on most of the decomposer fauna at the study site. Also, our results emphasize that the effect of enclosure has to be taken into account when experiments using closed chambers are performed. (c) 2005 Elsevier B.V. All rights reserved.