Cost-effective urban farming with alternative water sources treated by nature-based solutions: A critical review of global practices
自然を基盤としたソリューションで処理された代替水源を用いた費用対効果の高い都市農業：グローバルな実践の批判的レビュー (AI 翻訳)
Niloofar Shoja Razavi, Kefeng Zhang, Veljko Prodanović
🤖 gxceed AI 要約
日本語
本レビューは、都市農業における代替水源（雑排水、黒水、地下水、雨水、雨水）の利用可能性と、それらを処理する自然ベースのソリューション（人工湿地、バイオフィルター、緑化屋根、緑壁）の有効性を評価。作物の経済的 viability と政策ギャップも分析し、適切な対策により複数のSDGs達成に貢献できると結論。
English
This review evaluates five alternative water sources (greywater, blackwater, groundwater, rainwater, stormwater) and four nature-based solutions (constructed wetlands, biofilters, green roofs, green walls) for urban farming. It assesses crop economic viability and policy gaps, concluding that with appropriate safeguards, these approaches can advance food security and multiple SDGs.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本では都市農業の水資源確保が課題であり、本レビューは自然ベースの処理技術と経済性評価の枠組みを提供する。政策面での規制ギャップの指摘は、日本の水再利用政策の改善に示唆を与える。
In the global GX context
Globally, urbanization pressures water resources; this review offers a framework integrating treatment technology, crop economics, and policy for urban agriculture water reuse. The identified governance gaps highlight the need for clearer regulatory guidance worldwide.
👥 読者別の含意
🔬研究者:Provides a comprehensive framework for studying alternative water sources and NBS in urban agriculture, highlighting research gaps in policy and public acceptance.
🏢実務担当者:Farmers and urban planners can use the crop-specific economic viability insights and treatment technology recommendations to implement cost-effective water reuse systems.
🏛政策担当者:Highlights inconsistent enforcement and lack of specific regulatory guidance for urban agricultural water reuse, suggesting areas for policy development.
📄 Abstract（原文）
Urban agriculture supports food security and circular resource use in cities, yet expansion is hindered by limited clean irrigation water. This review examines five alternative water sources available in urban environments (i.e., greywater, blackwater, groundwater, rainwater, and stormwater) for urban crop irrigation, assessing their agronomic suitability and contaminant profiles through systematic global literature synthesis. Four nature-based solution (NBS) technologies (i.e., constructed wetlands, biofilters, green roofs, and green walls) were evaluated as pre-treatment systems, alongside international regulatory frameworks and an economic model applied to tomatoes, faba beans, and sweet peppers. Each water source presents a distinct risk-benefit profile, with contaminants spanning nutrients, pathogens, heavy metals, and emerging pollutants. NBS technologies effectively reduce these risks while retaining crop-beneficial nutrients, with hybrid systems such as wetland-biofilter combinations achieved removal efficiencies exceeding 97% for TSS, BOD, and COD. Crop selection was decisive for economic viability, with high-value crops such as tomatoes and sweet peppers irrigated with treated groundwater yielded the greatest profitability, while faba beans remained unviable regardless of treatment approach. Policy analysis identified substantial governance gaps, including inconsistent enforcement, limited public acceptance, and minimal regulatory guidance specific to urban agricultural water reuse. By integrating treatment technology, crop suitability, economic viability, and policy considerations into a unified framework, this review demonstrates that alternative water sources can meaningfully advance food security and support multiple Sustainable Development Goals when appropriate safeguards are in place.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.agsy.2026.104881first seen 2026-06-29 05:28:06 · last seen 2026-06-29 05:28:18
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