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首页> 外文期刊>Bioenergy research >Restoring Soil Ecosystems and Biomass Production of Arundo donax L. under Microbial Communities-Depleted Soil
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Restoring Soil Ecosystems and Biomass Production of Arundo donax L. under Microbial Communities-Depleted Soil

机译：微生物群落贫化土壤下恢复芦竹土壤生态系统和生物量生产的研究

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摘要

In recent years, giant reed (Arundo donax L) has received considerable attention as a promising plant for energy production. Giant reed is able to grow in a range of environments, including wetlands and marginal soils, and has shown promise in phytoremediation efforts. A pot experiment was carried out to investigate the ability of giant reed to restore ecosystems of different soils, including bauxite-derived red mud-amended soil and pure red mud (red mud—a waste generated by the Bayer process in the aluminum industry—is strongly alkaline and has a high salt content and electrical conductivity (EC) dominated by sodium). Samples were exposed to high temperatures, which simulate the effects of bushfires. Selected soil properties that were measured included soil dehydrogenase, alkaline phosphatase, urease and catalase activities, soil organic carbon, soil pH, EC, available soil macronutrients NPK, and above- and below-ground plant biomass yield. The results showed that giant reed reduced EC in all autoclaved soils and red mud-contaminated soils by 24–82 %. Significantly, available N was increased, and a slight increase was recorded for available K. The presence of giant reed enhanced the soils’ enzyme activities to recover in all tested autoclaved soils and red mud-contaminated soils; specifically, dehydrogenase activity increased by 262 and 705 % in non-autoclaved and autoclaved soils, respectively, and urease and catalase activities increased by 591 and 385 % in autoclaved soils, respectively. Total bacterial and fungal counts were higher in autoclaved soils than non-autoclaved soils after cultivating giant reed for 12 weeks. Autoclaved soils enabled higher biomass production for giant reed than non-autoclaved soils. These results demonstrate that giant reed is not only able to survive on soil that has lost its microbial community as a result of heat, but can also yield significant amounts of biomass while assisting recovering soil ecosystems after bushfires.
机译：近年来，作为一种有前途的能源生产厂，巨型芦苇（Arundo donax L）受到了广泛关注。巨型芦苇能够在包括湿地和边缘土壤在内的各种环境中生长，并且在植物修复工作中显示出了希望。进行了盆栽试验，以研究巨型芦苇恢复不同土壤生态系统的能力，包括铝土矿衍生的红泥改良土壤和纯红泥（红泥-铝工业中拜耳法产生的废物）具有强碱性，并具有较高的盐含量和以钠为主的电导率（EC）。样品暴露在高温下，这模拟了丛林大火的影响。所测量的选定土壤特性包括土壤脱氢酶，碱性磷酸酶，脲酶和过氧化氢酶活性，土壤有机碳，土壤pH，EC，可用土壤大量养分NPK以及地上和地下植物生物量产量。结果表明，在所有高压灭菌的土壤和赤泥污染的土壤中，巨型芦苇均降低了EC含量24-82％。显着地，有效氮增加，而有效钾记录略有增加。巨型芦苇的存在增强了土壤的酶活性，可以在所有试验高压灭菌的土壤和赤泥污染的土壤中恢复。特别是，在非高压灭菌的土壤中，脱氢酶活性分别增加了262％和705％，在高压灭菌的土壤中，脲酶和过氧化氢酶活性分别增加了591％和385％。培养12周后，高压灭菌的土壤中细菌和真菌的总计数高于非高压灭菌的土壤。高压灭菌的土壤比未高压灭菌的土壤能够生产更高的芦苇生物量。这些结果表明，巨大的芦苇不仅能够在因热而失去微生物群落的土壤上生存，而且还能产生大量的生物量，同时有助于在大火之后恢复土壤生态系统。

著录项

  • 来源
    《Bioenergy research》 |2014年第1期|268-278|共11页
  • 作者

    T. Alshaal; é. Domokos-Szabolcsy; L. Márton; M. Czakó; J. Kátai; P. Balogh; N. Elhawat; H. El-Ramady; A. Ger?cs; M. Fári;

  • 作者单位

    1.Department of Plant Biotechnology University of Debrecen 4015 P.O. Box 36 Debrecen Hungary 5.Department of Soil Science Faculty of Agriculture University of Kafr el-Sheikh Kafr el-Sheikh Egypt;

    1.Department of Plant Biotechnology University of Debrecen 4015 P.O. Box 36 Debrecen Hungary;

    3.Department of Biological Sciences University of South Carolina Columbia SC USA;

    3.Department of Biological Sciences University of South Carolina Columbia SC USA;

    2.Department of Agricultural Chemistry and Soil Sciences University of Debrecen Debrecen Hungary;

    4.Department of Economic Analysis and Statistics University of Debrecen Debrecen Hungary;

    1.Department of Plant Biotechnology University of Debrecen 4015 P.O. Box 36 Debrecen Hungary 6.Department of Biological and Environmental Sciences Faculty of Home Economics Al-Azhar University 1 Al Mokhaym Al Daem Cairo Egypt;

    1.Department of Plant Biotechnology University of Debrecen 4015 P.O. Box 36 Debrecen Hungary 5.Department of Soil Science Faculty of Agriculture University of Kafr el-Sheikh Kafr el-Sheikh Egypt;

    1.Department of Plant Biotechnology University of Debrecen 4015 P.O. Box 36 Debrecen Hungary;

    1.Department of Plant Biotechnology University of Debrecen 4015 P.O. Box 36 Debrecen Hungary;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Giant Reed Biomass Production Soil Enzyme Activities Macronutrients Autoclaving Soil Ecosystems;

    机译：巨型芦苇生物量生产土壤酶活性大量养分高压蒸煮土壤生态系统;

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