生物炭-堆肥混合物在地中海条件下调节屋顶耕作系统中的微量元素和营养动态。

IF 6.1 2区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES
Ecotoxicology and Environmental Safety Pub Date : 2025-09-01 Epub Date: 2025-07-16 DOI:10.1016/j.ecoenv.2025.118663
Medina Veliu, Hugo López-Romano, Giuseppe Picca, Marco Panettieri, Eduardo Moreno-Jiménez, Denis Courtier-Murias, Liliane Jean-Soro, Johnny Gasperi, Laura L De Sosa
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引用次数: 0

摘要

对屋顶农业(RA)日益增长的兴趣已经抑制了对可持续的、轻质的泥炭替代品作为植物生长介质的需求。将有机废物与生物炭共同堆肥可能是一种减少环境影响的解决方案。然而,关于这些材料的食品安全和环境性能的知识差距仍然存在。本研究检测了六种基质中的微量元素和营养动态,这些基质来自三种原料:废咖啡渣、咖啡银皮和海藻,并在有和没有生物炭的情况下进行堆肥。三年后,番茄(Solanum lycopersicum L., cv。Moruno de Aranjuez)和生菜(Lactuca sativa L., cv。和瑞士甜菜(Beta vulgaris var. Cicla)在西班牙马德里市中心的一个屋顶上种植。为了揭示植物吸收元素和沥滤到排水中的更大图景,通过基于风险的类别分组元素来计算特定指数。结果表明,微量元素和养分动态依赖于原料,生物炭减少了它们的植物吸收和淋溶。尽管以海藻为基础的堆肥显示出最高的砷含量,但生物炭降低了植物吸收高达40% %。可食用部分的镉和铅含量因年份和基质而异,但仍在欧盟安全限制范围内。大气沉降对生菜微量元素含量影响最小,而洗涤则降低了有害元素的含量。生物炭改善了养分保留,在三年内分别减少了40% %和25% %的磷和氮损失。这些发现强调了生物炭改性的堆肥作为RA的可持续、安全的泥炭替代品的潜力,支持作物生产,同时减轻环境和健康风险。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Biochar-Compost blends modulate trace element and nutrient dynamics in rooftop farming systems under Mediterranean conditions.

The rising interest in Rooftop Agriculture (RA) has stemmed a demand for sustainable, lightweight alternatives to peat as plant growing media. Co-composting organic waste with biochar could represent a solution with reduced environmental impact. However, knowledge gaps remain regarding the food safety and environmental performance of these materials. This study examined trace element and nutrient dynamics in six substrates derived from three feedstocks: spent coffee grounds, coffee silverskin, and seaweeds, composted with and without biochar. Over three years, tomato (Solanum lycopersicum L., cv. Moruno de Aranjuez) and a mix of lettuce (Lactuca sativa L., cv. Romana) and Swiss chard (Beta vulgaris var. Cicla) were cultivated on a rooftop in central Madrid (Spain). To unveil the bigger picture behind element uptake by plants and leaching into drainage water, specific indices were calculated by grouping elements by risk-based categories. Results showed feedstock-dependent trace element and nutrient dynamics, with biochar reducing their plant uptake and leaching. Despite seaweed-based compost showing the highest arsenic levels, biochar lowered plant uptake by up to 40 %. Cadmium and lead in edible parts varied by year and substrate, but they remained within EU safety limits. Atmospheric deposition minimally affected lettuce trace element content, while washing reduced hazardous elements. Biochar improved nutrient retention, reducing phosphorus and nitrogen losses by 40 % and 25 %, respectively, over three years. These findings underline the potential of biochar-amended composts as sustainable, safe peat alternatives for RA, supporting crop production while mitigating environmental and health risks.

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来源期刊
CiteScore
12.10
自引率
5.90%
发文量
1234
审稿时长
88 days
期刊介绍: Ecotoxicology and Environmental Safety is a multi-disciplinary journal that focuses on understanding the exposure and effects of environmental contamination on organisms including human health. The scope of the journal covers three main themes. The topics within these themes, indicated below, include (but are not limited to) the following: Ecotoxicology、Environmental Chemistry、Environmental Safety etc.
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