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Life-cycle greenhouse gas assessment of Community Supported Agriculture in California's Central Valley

Published online by Cambridge University Press:  01 June 2017

Libby O. Christensen ,
Ryan E. Galt  and
Alissa Kendall
Libby O. Christensen*
Affiliation:
Department of Agricultural and Resource Economics, Colorado State University, Fort Collins, USA
Ryan E. Galt
Affiliation:
Department of Human Ecology, University of California, Davis, USA
Alissa Kendall
Affiliation:
Department of Civil and Environmental Engineering, University of California, Davis, USA
*
*Corresponding author: [email protected]
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Abstract

Many consumers are trying to reduce their food's environmental impact by purchasing more locally sourced food. One choice for local food is Community Supported Agriculture (CSA), in which farmers provide a share of produce on a regular basis to pre-paying farm members. The number of CSAs in the USA has grown from two in the mid-1980s to perhaps as many as 12,617 according to the latest US census of agriculture (2014). We use a case study approach to investigate the greenhouse gas (GHG) emissions associated with five CSA operations in the Sacramento Valley of California. By understanding the GHG emissions of CSAs and the practices that might be improved, we hope to support innovative strategies to reduce GHG emissions in these agricultural production systems. Input, production and distribution data were collected from each farm and reported in CO2e emissions for 1 kg CSA produce at the pickup location. Results show large variation in total emissions, ranging from 1.72 to 6.69 kg CO2e kg−1 of produce with an average of 3.94 kg CO2e kg−1 produce. The largest source of emissions was electricity, contributing over 70% of total CO2e emissions on average. Based on our findings, despite the seemingly similarities between these operations in terms of production site, acreage, customers and production practices, there is still a large amount of variability with regard to total GHG. Thus we argue coming up with a standardized production function for diversified production and deriving GHGs or calculating average total emissions overlooks the heterogeneity of the system. Food systems can never be reduced to a simple binary of local is better and conventional is worse, or its inverse local is worse and conventional is better, because of the complexities of the production and distribution systems and their relationship to GHG emissions. Yet, we can say that localized production systems that are low in electricity use (or use renewable energy sources) and use efficiently-produced compost use have lower GHG emissions than those that do not.

Keywords

community supported agriculturefood mileslocal foodcarbon footprintlife-cycle greenhouse gas assessmentgreenhouse gas
Type
Research Paper
Information
Renewable Agriculture and Food Systems , Volume 33 , Issue 5 , October 2018 , pp. 393 - 405
Copyright
Copyright © Cambridge University Press 2017 

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References

Alibaba.Com. 2011. Global Trade Starts Here [Online]. Available at Web site: http://www.alibaba.com (Accessed 2016).Google Scholar
Born, B. and Purcell, M. 2006. Avoiding the local trap: Scale and food systems in planning research. Journal of Planning Education and Research 26:195–207.Google Scholar
Brander, M., Tipper, R., Hutchinson, C., and Davis, G. 2008. Technical Paper – Consequential and Attributional Approaches to LCA: A Guide to Policy Makers with Specific Reference to Greenhouse Gas Lca of Biofuels. Ecometrica Press, Edinburgh, UK.Google Scholar
Brodt, S., Kramer, K.J., Kendall, A., and Feenstra, G. 2013. Comparing environmental impacts of regional and national-scale food supply chains: A case study of processed tomatoes. Food Policy 42:106–114.Google Scholar
Burleigh, J.R., Vingnanakulasingham, V., Lalith, W.R.B., and Gonapinuwala, S. 1998. Pattern of pesticide use and pesticide efficacy among chili growers in the dry zone of north east Sri Lanka (system B): Perception vs reality. Agriculture, Ecosystems & Environment 70:49–60.Google Scholar
Buttel, F.H. 2006. Sustaining the unsustainable: Agro-food systems and environment in the modern world. In Cloke, P., Marsden, T., and Mooney, P. (eds). Handbook of Rural Studies. SAGE Publications Ltd., London, UK. p. 213–229.Google Scholar
C.F. Industries. 2013. MSDS: Aqua Ammonia 29.5%. Deerfield, Illinois.Google Scholar
California Air Resources Board. 2007. Offroad2007. Mobile Source Enmissions Inventory Program. California Energy Commission, Sacramento, CA.Google Scholar
Carlsson-Kanyama, A. 1998. Climate change and dietary choices-how can emissions of greenhouse gases from food consumption be reduced? Food Policy 23:277–293.Google Scholar
Carlsson-Kanyama, A. and González, A.D. 2009. Potential contributions of food consumption patterns to climate change. American Journal of Clinical Nutrition 89:1704S–1709S.Google Scholar
Carlsson-Kanyama, A., Ekström, M.P., and Shanahan, H. 2003. Food and life cycle energy inputs: Consequences of diet and ways to increase efficiency. Ecological Economics 44:293–307.Google Scholar
Carlton, J. 2011. ‘San Francisco garbage helps make vineyards thrive’. Wall Street Journal. Available at: https://www.wsj.com/articles/SB10001424052970203633104576621633242608082 (Accessed May 15, 2016).Google Scholar
Cleveland, D.A., Radka, C.N., Muãàller, N.M., Watson, T.D., Rekstein, N.J., Wright, H.V.M., and Hollingshead, S.E. 2011. Effect of localizing fruit and vegetable consumption on greenhouse gas emissions and nutrition, Santa Barbara County. Environmental Science & Technology 45:4555–4562.Google Scholar
Coley, D., Howard, M., and Winter, M. 2009. Local food, food miles and carbon emissions: A comparison of farm shop and mass distribution approaches. Food Policy 34:150–155.Google Scholar
Cooper, J.M., Butler, G., and Leifert, C. 2011. Life cycle analysis of greenhouse gas emissions from organic and conventional food production systems, with and without bio-energy options. NJAS – Wageningen Journal of Life Sciences 58:185–192.Google Scholar
Costello, C., Birisci, E., and McGarvey, R.G. 2016. Food waste in campus dining operations: Inventory of pre- and post-consumer mass by food category, and estimation of embodied greenhouse gas emissions. Renewable Agriculture and Food Systems 31:191–201.Google Scholar
Dale, V.H. and Polasky, S. 2007. Measures of the effects of agricultural practices on ecosystem services. Ecological Economics 64:286–296.Google Scholar
De Klein, C., Novoa, R.S., Ogle, S., Smith, K.A., Rochette, P., Wirth, T.C., McConkey, B.G., Mosier, A., Rypdal, K., Walsh, M., and Williams, S.A. 2006. N2O emissions from managed soils, and CO2 emissions from lime and urea application. IPCC Guidelines for National Greenhouse Gas Inventories, Prepared by the National Greenhouse Gas Inventories Programme 4:1–54.Google Scholar
Duram, L. and Oberholtzer, L. 2010. A geographic approach to place and natural resource use in local food systems. Renewable Agriculture and Food Systems 25:99–108.Google Scholar
Dutilh, C.E. and Kramer, K.J. 2000. Energy consumption in the food chain. Ambio 29:98–101.Google Scholar
Ecoinvent Centre. 2008. Ecoinvent data V2.0. Swiss Centre for Life Cycle Inventories. Available at: http://www.ecoinvent.org/database/older-versions/ecoinvent-version-2/ecoinvent-version-2.html (Accessed May 15, 2012).Google Scholar
Edwards-Jones, G., Milà I Canals, L., Hounsome, N., Truninger, M., Koerber, G., Hounsome, B., Cross, P., York, E.H., Hospido, A., and Plassmann, K. 2008. Testing the assertion that ‘local food is best’: The challenges of an evidence-based approach. Trends in Food Science & Technology 19:265–274.Google Scholar
Eshel, G. and Martin, P.A. 2006. Diet, energy, and global warming. Earth Interactions 10:1–17.Google Scholar
Favoino, E. and Hogg, D. 2008. The potential role of compost in reducing greenhouse gases. Waste Management & Research 26:61–69.Google Scholar
Galt, R.E. 2008. Toward an integrated understanding of pesticide use intensity in Costa Rican vegetable farming. Human Ecology 36:655–677.Google Scholar
Galt, R.E. 2011. Counting and mapping community supported agriculture in the United States and California: Contributions from critical cartography/gis. ACME: An International E-Journal for Critical Geographies 10:131–162.Google Scholar
Galt, R.E., Beckett, J., Hiner, C.C., and O'Sullivan, L. 2011. Community Supported Agriculture (CSA) in and around California's Central Valley: Farm and Farmer Characteristics, Farm-Member Relationships, Economic Viability, Information Sources, and Emerging Issues. University of California, Davis.Google Scholar
Galt, R.E., O'Sullivan, L., Beckett, J., and Hiner, C.C. 2012. Community supported agriculture is thriving in the Central Valley. California Agriculture 66:8–14.Google Scholar
Galt, R.E., O'Sullivan, L., and Kendall, A. 2013. A life-cycle assessment (LCA) of greenhouse gas emissions from a box of produce: Comparing Community Supported Agriculture (CSA) and conventional food systems in the Sacramento Valley, Diversified Farming Systems Roundtable, [Lecture]. University of California, Berkeley, unpublished.Google Scholar
Gliessman, S. 2007. Agroecology: The Ecology of Sustainable Food Systems. CRC Press, Boca Raton, FL.Google Scholar
Gustavsson, J., Cederberg, C., Sonesson, U., Van Otterdijk, R., and Meybeck, A. 2011. Global Food Losses and Food Waste – Extent, Causes and Prevention. Food and Agriculture Organization of the United Nations, Rome, Italy.Google Scholar
Henderson, E. and Van En, R. 2007. Sharing the Harvest: A Citizen's Guide to Community Supported Agriculture, Revised and Expanded. Chelsea Green Publishing, White River Junction, VT.Google Scholar
Iles, A. and Marsh, R. 2012. Nurturing diversified farming systems in industrialized countries: How public policy can contribute. Ecology and Society, 17:42.Google Scholar
Jeavons, J. 2006. How to Grow More Vegetables: Than You Ever Thought Possible on Less Land Than You Can Imagine. Ten Speed Press, Berkeley, CA.Google Scholar
Jones, A. 2002. An environmental assessment of food supply chains: A case study on dessert apples. Environmental Management 30:560–576.Google Scholar
Kendall, A., Marvinney, E., Brodt, S., and Zhu, W. 2015. Life cycle–based assessment of energy use and greenhouse gas emissions in almond production, Part I: Analytical framework and baseline results. Journal of Industrial Ecology 19:1008–1018.Google Scholar
Kong, A.Y., Six, J., Bryant, D.C., Denison, R.F., and Van Kessel, C. 2005. The relationship between carbon input, aggregation, and soil organic carbon stabilization in sustainable cropping systems. Soil Science Society of America Journal 69:1078–1085.Google Scholar
Leifeld, J. and Fuhrer, J. 2010. Organic farming and soil carbon sequestration: What do we really know about the benefits? Ambio, 39:585–599.Google Scholar
Liu, Y., Langer, V., Høgh-Jensen, H., and Egelyng, H. 2010. Life cycle assessment of fossil energy use and greenhouse gas emissions in Chinese pear production. Journal of Cleaner Production 18:1423–1430.Google Scholar
Lyson, T.A. 2004. Civic Agriculture: Reconnecting Farm, Food, and Community. Tufts University Press, Medford, Massachusetts.Google Scholar
Martínez-Blanco, J., Colón, J., Gabarrell, X., Font, X., Sánchez, A., Artola, A., and Rieradevall, J. 2010. The use of life cycle assessment for the comparison of biowaste composting at home and full scale. Waste Management 30:983–994.Google Scholar
Martínez-Blanco, J., Lazcano, C., Christensen, T.H., Muñoz, P., Rieradevall, J., Møller, J., Antón, A., and Boldrin, A. 2013. Compost benefits for agriculture evaluated by life cycle assessment. A review. Agronomy for Sustainable Development 33:721–732.Google Scholar
Meisterling, K., Samaras, C., and Schweizer, V. 2009. Decisions to reduce greenhouse gases from agriculture and product transport: LCA case study of organic and conventional wheat. Journal of Cleaner Production 17:222–230.Google Scholar
Milà I Canals, L., Cowell, S., Sim, S., and Basson, L. 2007. Comparing domestic versus imported apples: A focus on energy use. Environmental Science and Pollution Research 14:338–344.Google Scholar
Milà I Canals, L., MuñOz, I., Hospido, A., Plassman, K., and McLaren, S. 2008. Life Cycle Assessment (Lca) of Domestic Vs. Imported Vegetables: Case Studies on Broccoli, Salad Crops and Green Beans. Centre for Environmental Strategy, University of Surrey, Guildford, UK.Google Scholar
Miles, A. and Brown, M. 2005. Teaching Organic Farming: Resources for Instructors. University of California Santa Cruz, Center for Agroecology and Sustainable Food Systems, Santa Cruz, CA.Google Scholar
Mogensen, L., Hermansen, J.E., Halberg, N., Dalgaard, R., Vis, J., and Smith, B.G. 2009. Life cycle assessment across the food supply chain. In Baldwin, C. (ed.). Sustainability in the Food Industry. Ames, Iowa: John Wiley & Sons, Ltd.Google Scholar
Murtishaw, S., Price, L., De La Rue Du Can Eric Masanet, S., Worrell, E., and Sathaye, J. 2005. Development of Energy Balances for the State of California. California Energy Commission, PIER Energy-Related Environmental Research, Sacramento, CA.Google Scholar
Myhre, G., Shindell, D., Bréon, F.M., Collins, W., Fuglestvedt, J., Huang, J., Koch, D., Lamarque, J.F., Lee, D., Mendoza, B., Nakajima, T., Robock, A., Stephens, G., Takemura, T., and Zhang, H. 2013. Anthropogenic and natural radiative forcing. In: Stocker, T.F., Qin, D., Plattner, G.K., Tignor, M., Allen, S.K., Boschung, J., Nauels, A., Xia, Y., Bex, V., and Midgley, P.M. (eds). Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge University Press, Cambridge, UK and New York, NY, USA.Google Scholar
Nguyen, T.L.T. & Gheewala, S.H. 2008. Life cycle assessment of fuel ethanol from cane molasses in Thailand. International Journal of Life Cycle Assessment 13:301.Google Scholar
Novoa, R.S. and Tejeda, H.R. 2006. Evaluation of the N2O emissions from N in plant residues as affected by environmental and management factors. Nutrient Cycling in Agroecosystems 75:29–46.Google Scholar
PE International. 2012. GaBi 6 System - Software and Databases for Life Cycle Engineering. Leinfelden-Echterdingen, DE.Google Scholar
Piringer, G. and Steinberg, L.J. 2006. Reevaluation of energy use in wheat production in the United States. Journal of Industrial Ecology 10:149–167.Google Scholar
Pirog, R., Van Pelt, T., Enshayan, K., and Cook, E. 2001. Food, Fuel, and Freeways: An Iowa Perspective on How Far Food Travels, Fuel Usage, and Greenhouse Gas Emissions. Leopold Center for Sustainable Agriculture, Ames, Iowa.Google Scholar
Roy, P., Nei, D., Orikasa, T., Xu, Q., Okadome, H., Nakamura, N., and Shiina, T. 2009. A review of life cycle assessment (LCA) on some food products. Journal of Food Engineering 90:1–10.Google Scholar
Sandhu, H.S., Wratten, S.D., Cullen, R., and Case, B. 2008. The future of farming: The value of ecosystem services in conventional and Organic Arable Land. An experimental approach. Ecological Economics 64:835–848.Google Scholar
Sandhu, H.S., Wratten, S.D., and Cullen, R. 2010. Organic agriculture and ecosystem services. Environmental Science & Policy 13:1–7.Google Scholar
Schmidt, J. 2010. Comparative life cycle assessment of rapeseed oil and palm oil. International Journal of Life Cycle Assessment 15:183–197.Google Scholar
Smil, V. 2008. Energy in Nature and Society: General Energetics of Complex Systems. The MIT Press, Cambridge, Massachusetts.Google Scholar
Smith, A., Watkiss, P., Tweddle, G., McKinnon, A., Browne, M., Hunt, A., Treleven, C., Nash, C., and Cross, S. 2005. The Validity of Food Miles as an Indicator of Sustainable Development. Department for Environment, Food and Rural Affairs, London, UK.Google Scholar
Snyder, C.S., Bruulsema, T.W., Jensen, T.L., and Fixen, P.E. 2009. Review of greenhouse gas emissions from crop production systems and fertilizer management effects. Agriculture, Ecosystems & Environment 133:247–266.Google Scholar
Sullivan, D.M. and Costello, R. 2010. Breaking It Down: Growers Can Get the Most Value from Their Compost by Having It Analyzed First. Oregon State University, Corevallis, OR.Google Scholar
United States Department of Agriculture 2014. 2012 Census of Agriculture. Washington, DC.Google Scholar
University of California Sarep 2006. Cover Crop Database. Davis, CA.Google Scholar
Venkat, K. 2012. Comparison of twelve organic and conventional farming systems: A life cycle greenhouse gas emissions perspective. Journal of Sustainable Agriculture 36:620–649.Google Scholar
Weber, C.L. and Matthews, H.S. 2008. Food-miles and the relative climate impacts of food choices in the United States. Environmental Science & Technology 42:3508–3513.Google Scholar
Williams, A., Pell, E., Webb, J., Moorhouse, E., and Audsley, E. 2009. Strawberry and tomato production for the U.K. Compared between the U.K. and Spain. In: Nemecek, T. and Gaillard, G. (eds). 6th International Conference on Life Cycle Assessment in the Agri-Food Sector – Towards a Sustainable Management of the Food Chain. Agroscope Reckenholz-Taänikon Research Station ART, Zurich, Switzerland.Google Scholar
Williams, A.G., Audsley, E., and Sandars, D.L. 2006. Determining the Environmental Burdens and Resource Use in the Production of Agricultural and Horticultural Commodities. Cranfield University and Defra, Bedford, UK.Google Scholar
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