کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4419275 1618934 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Assessing microbial activities in metal contaminated agricultural volcanic soils – An integrative approach
ترجمه فارسی عنوان
ارزیابی فعالیت های میکروبی در خاک های آتشفشانی کشاورزی آلوده به فلز رویکرد یکپارچه
کلمات کلیدی
فعالیت های آنزیمی خاک، فعالیت های میکروبی خاک، آندوسول، ردیابی فلز واکنش زیستشناختی یکپارچه
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی


• The studied agricultural Andosols are naturally enriched with trace metals.
• Conventional farming in Andosols particularly decreases soil microbial activities.
• Dehydrogenase, β-glucosidase, SBR and MB-C are the most sensitive responses.
• Farming systems soil health is ranked by IBR as: organic>traditional>conventional.

Volcanic soils are unique naturally fertile resources, extensively used for agricultural purposes and with particular physicochemical properties that may result in accumulation of toxic substances, such as trace metals. Trace metal contaminated soils have significant effects on soil microbial activities and hence on soil quality. The aim of this study is to determine the soil microbial responses to metal contamination in volcanic soils under different agricultural land use practices (conventional, traditional and organic), based on a three-tier approach: Tier 1 – assess soil microbial activities, Tier 2 – link the microbial activity to soil trace metal contamination and, Tier 3 – integrate the microbial activity in an effect-based soil index (Integrative Biological Response) to score soil health status in metal contaminated agricultural soils. Our results showed that microbial biomass C levels and soil enzymes activities were decreased in all agricultural soils. Dehydrogenase and β-glucosidase activities, soil basal respiration and microbial biomass C were the most sensitive responses to trace metal soil contamination. The Integrative Biological Response value indicated that soil health was ranked as: organic>traditional>conventional, highlighting the importance of integrative biomarker-based strategies for the development of the trace metal “footprint” in Andosols.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecotoxicology and Environmental Safety - Volume 129, July 2016, Pages 242–249
نویسندگان
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