University Center of International Programmes of Studies, International Hellenic University, Thessaloniki 57001, Greece; Soil and Water Resources Institute, Hellenic Agricultural Organization Dimitra, Thermi, Thessaloniki 57001, Greece.
Soil and Water Resources Institute, Hellenic Agricultural Organization Dimitra, Thermi, Thessaloniki 57001, Greece.
Sci Total Environ. 2024 Nov 1;949:175107. doi: 10.1016/j.scitotenv.2024.175107. Epub 2024 Jul 30.
The scarcity of freshwater poses significant challenges to agriculture, often necessitating the use of alternative water sources such as reclaimed water. While reclaimed water offers a viable solution by providing water and nutrients to crops, its potential impacts on soil microbial communities remain a subject of investigation. In this investigation, we conducted a field experiment cultivating Maize (Zea mays) and Lavender (Lavandula angustifolia), employing irrigation with reclaimed water originating from domestic wastewater, while control samples were irrigated using freshwater. Utilizing high-throughput sequencing, we assessed the effect of reclaimed water on soil bacteria and fungi. Plant biomass exhibited a significant response to treated wastewater. Alpha diversity metrics of soil microbial communities did not reveal significant changes in soils irrigated with reclaimed water compared to control samples. Reclaimed water, however, demonstrated a selective influence on microorganisms associated with nutrient cycling. Co-occurrence network analysis unveiled that reclaimed water may alter soil microbial community structure and stability. Although our work presents overall positive outcomes, further investigation into the long-term implications of reclaimed water irrigation is warranted.
淡水资源短缺给农业带来了重大挑战，往往需要使用替代水源，如再生水。虽然再生水通过为作物提供水和养分提供了可行的解决方案，但它对土壤微生物群落的潜在影响仍是一个研究课题。在这项研究中，我们进行了一项田间试验，种植了玉米（Zea mays）和薰衣草（Lavandula angustifolia），使用来自生活污水的再生水进行灌溉，而对照样品则使用淡水灌溉。我们利用高通量测序评估了再生水对土壤细菌和真菌的影响。处理后的废水对植物生物量有显著影响。与对照样品相比，用再生水灌溉的土壤中土壤微生物群落的α多样性指标没有显著变化。然而，再生水对与养分循环有关的微生物有选择性影响。共生网络分析表明，再生水可能会改变土壤微生物群落结构和稳定性。尽管我们的工作总体上呈现出积极的结果，但需要进一步研究再生水灌溉的长期影响。
