Representing crop rotations in life cycle assessment: a review of legume LCA studies

被引:53
作者
Costa, Marcela Porto [1 ]
Chadwick, David [1 ,2 ]
Saget, Sophie [3 ]
Rees, Robert M. [4 ]
Williams, Michael [3 ]
Styles, David [1 ,5 ]
机构
[1] Bangor Univ, Sch Nat Sci, Bangor LL57 2UW, Gwynedd, Wales
[2] Southwest Univ, Interdisciplinary Res Ctr Agr Green Dev Yangtze R, Chongqing, Peoples R China
[3] Trinity Coll Dublin, Sch Nat Sci, Dublin Dept Bot, Dublin, Ireland
[4] Scotlands Rural Coll, West Mains Rd, Edinburgh EH9 3JG, Midlothian, Scotland
[5] Natl Univ Ireland Galway, Plant & AgriBioSci Ctr, Ryan Inst, Galway, Ireland
基金
欧盟地平线“2020”;
关键词
Legumes; Crop rotations; Functional units; Allocation; Multi-functionality; Nitrogen cycling; GREENHOUSE-GAS EMISSIONS; LAND-USE IMPACTS; CARBON FOOTPRINT; GRAIN-LEGUMES; ENVIRONMENTAL IMPACTS; COVER CROPS; AGRICULTURAL SYSTEMS; NATURAL-ENVIRONMENT; SOIL CARBON; ENERGY USE;
D O I
10.1007/s11367-020-01812-x
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Purpose There is an imperative to accurately assess the environmental sustainability of crop system interventions in the context of food security and climate change. Previous studies have indicated that the incorporation of legumes into cereal rotations could reduce overall environmental burdens from cropping systems. However, most life cycle assessment (LCA) studies focus on individual crops and miss environmental consequences of inter-annual crop sequence and nutrient cycling effects. This review investigates state-of-the-art representation of inter-crop rotation effects within legume LCA studies. Methods A literature review was undertaken, starting with a search for all peer-reviewed articles with combinations of 'LCA', 'legumes' and 'rotations' or synonyms thereof. In total, 3180 articles were obtained. Articles were screened for compliance with all of the following requirements: (i) reporting results based on LCA or life cycle inventory methodology; (ii) inclusion of (a) legume(s); (iii) the legume(s) is/are analysed within the context of a wider cropping system (i.e. rotation or intercropping). Seventy articles satisfying these requirements were analysed. Results and discussion We identified three broad approaches to legume LCA. Most studies involved simple attributional LCA disregarding important interactions across years and crops in rotations. N-fertilizer reduction through legume residue N carryover is either disregarded or the benefit is attributed to the following crop in such studies, whilst N leaching burdens from residues are usually attributed to the legume crop. Some studies applied robust allocation approaches and/or complex functional units to enable analysis of entire rotation sequences, accounting for nutrient cycling and break crop effects. Finally, a few studies applied consequential LCA to identify downstream substitution effects, though these studies did not simultaneously account for agronomic effects of rotational sequence changes. Conclusions We recommend that LCA studies for legume cropping systems should (i) evaluate entire rotations; (ii) represent nitrogen and ideally carbon cycling; (iii) for attributional studies, define at least two functional units, where one should encompass the multifunctional outputs of an entire rotation and the other should enable product footprints to be calculated; (iv) for CLCA studies, account for both agronomic changes in rotations and markets effects; (v) include impact categories that reflect hotspots for agricultural production.
引用
收藏
页码:1942 / 1956
页数:15
相关论文
共 100 条
[1]   Decreasing the carbon footprint of an intensive rice-based cropping system using conservation agriculture on the Eastern Gangetic Plains [J].
Alam, Md Khairul ;
Bell, Richard W. ;
Biswas, Wahidul K. .
JOURNAL OF CLEANER PRODUCTION, 2019, 218 :259-272
[2]  
[Anonymous], 2018, Project Midterm Report, P9
[3]  
[Anonymous], 2016, Environmental Performance of Large Ruminant Supply Chains: Guidelines for Assessment, Version 1
[4]  
[Anonymous], 2018, COMM AGR POL GLANC
[5]  
[Anonymous], WHO TECHN REP SER
[6]   Environmental impact assessment of regional switchgrass feedstock production comparing nitrogen input scenarios and legume-intercropping systems [J].
Ashworth, Amanda J. ;
Taylor, Adam M. ;
Reed, Daniel L. ;
Allen, Fred L. ;
Keyser, Patrick D. ;
Tyler, Donald D. .
JOURNAL OF CLEANER PRODUCTION, 2015, 87 :227-234
[7]   Does growing grain legumes or applying lime cost effectively lower greenhouse gas emissions from wheat production in a semi-arid climate? [J].
Barton, Louise ;
Thamo, Tas ;
Engelbrecht, Deborah ;
Biswas, Wahidul K. .
JOURNAL OF CLEANER PRODUCTION, 2014, 83 :194-203
[8]   Influence of source and quality of plant residues on emissions of N2O and CO2 from a fertile, acidic Black Vertisol [J].
Begum, Nazma ;
Guppy, Chris ;
Herridge, David ;
Schwenke, Graeme .
BIOLOGY AND FERTILITY OF SOILS, 2014, 50 (03) :499-506
[9]  
Behera KK, 2012, SUSTAIN AGR REV, V8, P287, DOI 10.1007/978-94-007-1905-7_12
[10]   Environmental analysis of a cotton yarn supply chain [J].
Bevilacqua, Maurizio ;
Ciarapica, Filippo Emanuele ;
Mazzuto, Giovanni ;
Paciarotti, Claudia .
JOURNAL OF CLEANER PRODUCTION, 2014, 82 :154-165