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首页> 外文会议>International Conference on Biological Science >Soil Bacteria and Nematode Functional Diversity: A Comparison Across Vegetation Types
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Soil Bacteria and Nematode Functional Diversity: A Comparison Across Vegetation Types

机译：土壤细菌和线虫功能多样性：植被类型的比较

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Vegetation types are an above-ground component that plays an important role in shaping soil community through their different life history. Plant organic material as the main source for the below-ground community is available at various time and amount based on plant growth. The objective of this study was to compare the bacteria and nematode functional diversity on soil planted with five plant types. These greenhouse experiments are selected Oryza sativa L. (grass), Amaranthus sp. (herb), Solanum lycopersicum (L.) Karst. (shrub), Citrus reticulata Blanco (tree), and Arachis hypogaea L. (legume). To create seven treatments, control and plant mixture were included. Soil samples and plants were collected after five weeks for bacteria and nematode enumerations, plant biomass and specific leaf area measurements. Plant growth was followed approximately every two weeks. The bacteria were separated into the heterotrophic or autotrophic group and nematodes were classified into their functional group after identification. Canonical Correspondence Analysis was used to investigate the correlation between plant types and the soil organism composition. The preliminary results showed that the plant types determined the soil bacteria and nematode composition, except for O. sativa and S. lycopersicum with the greatest similarity of composition (eigenvalue: 0.33 and 0.24, correlation: 0.80, cumulative variance: 84.1 %). This was consistent with stem growth rate, leaf growth rate, specific leaf area and plant biomass allocation. Strong to medium correlations were observed between soil organisms and above-ground plant biomass allocation (r = -0.81), plant growth rate (r = -0.59) and leaf growth rate (r = -0.46) indicating below-ground resources most likely influenced soil food web development.
机译：植被类型是一个上面的地面组成部分，在通过不同的生活历史中塑造土壤群落中起重要作用。植物有机材料作为下面地区社区的主要来源可在各种时间和基于植物生长的金额提供。本研究的目的是将细菌和线虫功能多样性与五种植物类型的土壤进行比较。这些温室实验是选择Oryza sativa L.（草），Amaranthus SP。 （草本），Solanum Lycopersicum（L.）喀斯特。 （灌木），柑橘类reticulata blanco（树）和arachis hypogaea l。（豆科植物）。为了产生七种处理，包括控制和植物混合物。在细菌和线虫枚举五周后收集土壤样品和植物，植物生物质和特定叶面积测量。大约每两周一次植物生长。将细菌分离成异养，或自养殖基团，在鉴定后将线虫分为其官能团。典范对应分析用于探讨植物类型与土壤生物组成之间的相关性。初步结果表明，植物类型确定了土壤细菌和线虫组合物，除了具有最大的组成相似性的O. Sativa和S.Lycopersicum（特征值：0.33和0.24，相关性：0.80，累积方差：84.1％）。这与茎生长速率，叶生长速率，特异性叶面积和植物生物质分配一致。在土壤生物和地上植物生物质分配（R = -0.81），植物生长速率（R = -0.59）和叶生长速率（r = -0.46）之间观察到强大的相关性，表明低于地面资源土壤食品网络开发。

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