Conceptualizing core aspects of circular economy in soil: A critical review and analysis

Autor(es)

Nwaogu, Chukwudi ; Minasny, Budiman ; Field, Damien J. ; Cherubin, Mauricio R.

• Tipo de documento: Artigo Científico
• Fonte: CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY; v. N/A, p. 31-pg., 2025-01-16.

Resumo

Soil is a multifunctional sustainable pillar that holds the Earth by connecting and supporting the lithosphere, biosphere, hydrosphere, atmosphere, and anthroposphere. Circular economy (CE) has emerged as a solution to human-environmental sustainability needs. CE implementations have been popularized across various fields including engineering, agriculture, forestry, and waste management, but comprehensive studies focusing mainly on soil circularity in scientific literature are unavailable. This paper aims to outline the conceptual frameworks underpinning soil functions, services, and threats in relation to CE. This is done by identifying and mapping the research trajectory, thematic chronology, and evolution of the concept of CE and soil from contemporary scientific literature. The conceptual network is categorized into six main clusters (viz; extraction and processing, nutrient cycling, ecosystem services, contamination, waste management, and soil-related technologies) which were assessed by applying recycling, regeneration, and repurpose strategies in the soil context. Mapping the triple-R to soil functions, our study revealed that nutrient cycling was the most published topic on CE and soil. Further, we observed that research on recycling had the most attention and increased rapidly, regeneration increased marginally, while repurpose decreased. The study concludes that thematic conceptualization based on the triple-R is neither definite nor comprehensive but is meant to be indicative and applicable considering the "triple-A (agent-action-aim) principle representing intention, action, and purpose. A comprehensive knowledge synthesis about circular soil principles could help in the application of decisive, operational, and competitive benefits, vis-& agrave;-vis fostering more studies to intensify and promote soil circularity for a better society. (AU)

• Processo FAPESP: 21/11757-1 - Avaliação dos estoques de carbono do solo em sistemas agrícolas integrados no Brasil: uma abordagem geoinformática
• Beneficiário: Chukwudi Nwaogu
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 14/50279-4 - Brasil Research Centre for Gas Innovation
• Beneficiário: Julio Romano Meneghini
• Modalidade de apoio: Auxílio à Pesquisa - Programa Centros de Pesquisa em Engenharia
• Processo FAPESP: 23/05122-9 - Acoplamento de geoestatística e MLA para modelagem e previsão da dinâmica espaço-temporal de estoques, drivers e trade-offs de SOC em sistemas agrícolas integrados brasileiros
• Beneficiário: Chukwudi Nwaogu
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 20/15230-5 - Centro de Pesquisa e Inovação de Gases de Efeito Estufa - RCG2I
• Beneficiário: Julio Romano Meneghini
• Modalidade de apoio: Auxílio à Pesquisa - Programa Centros de Pesquisa em Engenharia
• Processo FAPESP: 21/10573-4 - Centro de Pesquisa de Carbono em Agricultura Tropical (CCARBON)
• Beneficiário: Carlos Eduardo Pellegrino Cerri
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs