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首页> 外文期刊>Journal of soils & sediments >Biological indicators for evaluating soil quality improvement in a soil degraded by erosion processes
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Biological indicators for evaluating soil quality improvement in a soil degraded by erosion processes

机译：通过侵蚀过程评估土壤质量改善的生物指标降解

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Purpose Erosion is one of the main soil degradation problems. It diminishes soil biological activity and therefore its quality. The aim of the study was to evaluate if the application of two biostimulation processes could significantly increase biological activity, and therefore productivity, in soils deteriorated by erosion. This was done without synthetic fertilizers but with treatments accessible for farmers, in line with the 2030 Agenda for Sustainable Development. In particular, the addition of a soil microorganism suspension or Macrocystis pyrifera algae concentrate was evaluated.Materials and methods Soil samples were taken from a field area (Bihor County, Romania) affected by surface erosion processes. In particular, microbial mass, dehydrogenase activity (DHA), and the bacteria and fungi presence were analyzed for three soil uses (corn, black locust and uncultivated field with terracing) and in different locations (above a slope, at the midpoint and below it). A bio-stimulation process (addition of a microbial suspension or seaweed concentrate based on the Macrocystis pyrifera algae; incubation for 24 h) was used in order to improve the activity of the soil with the lowest values of activity.Results and discussion Statistical differences in DHA, bacterial numbers, and microbial biomass were found depending on field use and the areas from which the soil samples were gathered. Higher values of the biological parameters were in general recorded in the middle part of the slope, because they favor bioaccumulation processes (e.g., actual and potential dehydrogenase activity values of about 3 mg TPF/10 g dry soil). The use of microbial suspensions did not significantly stimulate DHA for the soils with a low biological potential. This activity was stimulated by adding the seaweed concentrate to the soil.Conclusions The use of the seaweed concentrate can be a good practice for improving activity in eroded soil. The study provides useful indications for better soil fertility management, in line with many of the goals of the 2030 Agenda For Sustainable Development.
机译：目的侵蚀是主要的土壤退化问题之一。它减少了土壤生物活动，从而减少了其质量。该研究的目的是评估应用两种生物刺激过程的应用是否可以显着提高生物活性，因此在侵蚀的土壤恶化的土壤中。这是没有合成肥料的，但在农民可以获得治疗，符合2030年可持续发展议程。特别地，评估土壤微生物悬浮液或宏型紫外藻类浓缩物。方法和方法采用受表面侵蚀过程影响的田地区域（Bihor县，罗马尼亚）。特别地，分析了微生物质量，脱氢酶活性（DHA）以及细菌和真菌存在，三种土壤使用（玉米，黑色蝗虫和露台）和不同地点（在斜坡上方，在中间点和下方） ）。生物刺激过程（基于宏观囊泡Pyrifera藻类添加微生物悬浮液或海藻浓缩物;孵育24小时），以改善土壤的活性，具有最低的活动值。结果和讨论统计差异根据现场使用和收集土壤样品的区域发现DHA，细菌数和微生物生物量。生物参数的较高值通常记录在坡度的中间部分，因为它们有利于生物累积过程（例如，实际和潜在的脱氢酶活性值为约3mg TPF / 10g干燥土壤）。使用微生物悬浮液没有显着刺激具有低生物潜力的土壤的DHA。通过将海藻浓缩物添加到土壤来刺激该活动。结论海藻浓缩物的使用可能是改善侵蚀土壤活性的良好做法。该研究为更好的土壤肥力管理提供了有用的指示，符合2030年可持续发展议程的许多目标。

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