{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T06:48:34Z","timestamp":1777618114687,"version":"3.51.4"},"reference-count":79,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2025,9,2]],"date-time":"2025-09-02T00:00:00Z","timestamp":1756771200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100010676","name":"European Union\u2019s Horizon 2020 Research and Innovation Programme under the Societal Challenges","doi-asserted-by":"publisher","award":["862357"],"award-info":[{"award-number":["862357"]}],"id":[{"id":"10.13039\/100010676","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100010676","name":"European Union\u2019s Horizon 2020 Research and Innovation Programme under the Societal Challenges","doi-asserted-by":"publisher","award":["UID\/00239"],"award-info":[{"award-number":["UID\/00239"]}],"id":[{"id":"10.13039\/100010676","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia (FCT)","doi-asserted-by":"publisher","award":["862357"],"award-info":[{"award-number":["862357"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia (FCT)","doi-asserted-by":"publisher","award":["UID\/00239"],"award-info":[{"award-number":["UID\/00239"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Agronomy"],"abstract":"<jats:p>Sustainable intensification requires metrics that are able to capture both economic performance and the often-hidden environmental inputs that support agriculture. Emergy analysis (EmA) meets this need by converting all inputs\u2014free environmental flows and purchased goods\/services\u2014into a common unit (solar emjoules, sej). We conducted a PRISMA-documented bibliometric review of EmA in agroecosystems (Web of Science + Scopus, 2000\u20132022) using Bibliometrix and synthesized farm-scale indicators (ELR, EYR, ESI, %R). Our results show output has grown but is concentrated in a few countries (China, Italy and Brazil) and journals, with farm-level assessments dominating over regional and national assessments. Across cases, mixed crop\u2013livestock systems tend to show lower environmental loading (ELR) and higher sustainability (ESI) than crop-only or livestock-only systems. %R is generally modest, indicating continued reliance on non-renewables, with fertilizers (crops) and purchased feed (livestock) identified as recurrent drivers. Thematic mapping reveals well-developed niche clusters but no single motor theme, consistent with the presence of incongruous baselines, transformities and boundaries that limit comparability. We recommend adoption of the 12.1 \u00d7 1024 sej yr\u22121 baseline, transparent transformity reporting and multi-scale designs that link farm diagnostics to basin and national trajectories. Co-reporting with complementary sustainability assessment methods (such as LCA and carbon footprint), along with appropriate UEV resources, would increase its reputation among policymakers while preserving EmA\u2019s systems perspective, converting dispersed case evidence into cumulative knowledge for circular, resilient agroecosystems.<\/jats:p>","DOI":"10.3390\/agronomy15092110","type":"journal-article","created":{"date-parts":[[2025,9,2]],"date-time":"2025-09-02T09:24:41Z","timestamp":1756805081000},"page":"2110","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Assessing Agricultural Systems Using Emergy Analysis: A Bibliometric Review"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7785-2012","authenticated-orcid":false,"given":"Joana","family":"Marinheiro","sequence":"first","affiliation":[{"name":"Forest Research Centre, Associate Laboratory TERRA, School of Agriculture, University of Lisbon, 1349-017 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3561-5350","authenticated-orcid":false,"given":"Jo\u00e3o","family":"Serra","sequence":"additional","affiliation":[{"name":"Forest Research Centre, Associate Laboratory TERRA, School of Agriculture, University of Lisbon, 1349-017 Lisbon, Portugal"},{"name":"Department of Agroecology, Aarhus University, Blichers All\u00e9 20, 8830 Tjele, Denmark"},{"name":"Center for Landscape Research in Sustainable Agricultural Futures (Land-CRAFT), Aarhus University, Ny Munkegade 114, 8000 Aarhus, Denmark"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0981-9501","authenticated-orcid":false,"given":"Ana","family":"Fonseca","sequence":"additional","affiliation":[{"name":"CHAIA\u2014Centro de Hist\u00f3ria da Arte e Investiga\u00e7\u00e3o Art\u00edstica, Universidade de \u00c9vora, 7000-809 \u00c9vora, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8864-2611","authenticated-orcid":false,"given":"Cl\u00e1udia S. C.","family":"Marques-dos-Santos","sequence":"additional","affiliation":[{"name":"Forest Research Centre, Associate Laboratory TERRA, School of Agriculture, University of Lisbon, 1349-017 Lisbon, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2025,9,2]]},"reference":[{"key":"ref_1","first-page":"161","article-title":"Chapter Five\u2014Conceptualizing Pathways to Sustainable Agricultural Intensification","volume":"Volume 63","author":"Bohan","year":"2020","journal-title":"The Future of Agricultural Landscapes, Part I"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"e2019EF001287","DOI":"10.1029\/2019EF001287","article-title":"Agricultural Development and Land Use Change in India: A Scenario Analysis of Trade-Offs Between UN Sustainable Development Goals (SDGs)","volume":"8","author":"Hinz","year":"2020","journal-title":"Earth\u2019s Future"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"3945","DOI":"10.1007\/s12665-013-2779-z","article-title":"Accumulation and Risk of Heavy Metals in Relation to Agricultural Intensification in the River Sediments of Agricultural Regions","volume":"71","author":"Tang","year":"2014","journal-title":"Environ. 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