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LCA on Lettuce Cropping System by Top-down Method in Protected Cultivation
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 Title & Authors
LCA on Lettuce Cropping System by Top-down Method in Protected Cultivation
Ryu, Jong-Hee; Kim, Kye-Hoon; So, Kyu-Ho; Lee, Gil-Zae; Kim, Gun-Yeob; Lee, Deog-Bae;
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This study was carried out to estimate carbon emission using LCA (Life Cycle Assessment) and to establish LCI (Life Cycle inventory) DB for lettuce production system in protected cultivation. The results of data collection for establishing LCI DB showed that the amount of fertilizer input for 1 kg lettuce production was the highest. The amounts of organic and chemical fertilizer input for 1 kg lettuce production were 7.85E-01 kg and 4.42E-02 kg, respectively. Both inputs of fertilizer and energy accounted for the largest share. The amount of field emission for , and for 1 kg lettuce production was 3.23E-02 kg. The result of LCI analysis focused on GHG (Greenhouse gas) showed that the emission value to produce 1 kg of lettuce was 8.65E-01 kg . The emission values of and to produce 1 kg of lettuce were 8.59E-03 kg and 2.90E-04 kg , respectively. Fertilizer production process contributed most to GHG emission. Whereas, the amount of emitted nitrous oxide was the most during lettuce cropping stage due to nitrogen fertilization. When GHG was calculated in -equivalents, the carbon footprint from GHG was 1.14E-+00 kg -eq. . Here, accounted for 76% of the total GHG emissions from lettuce production system. Methane and nitrous oxide held 16%, 8% of it, respectively. The results of LCIA (Life Cycle Impact assessment) showed that GWP (Global Warming Potential) and POCP (Photochemical Ozon Creation Potential) were 1.14E+00 kg -eq. and 9.45E-05 kg -eq. , respectively. Fertilizer production is the greatest contributor to the environmental impact, followed by energy production and agricultural material production.
LCA;Lettuce (Lactuca sativa L.);Protected cultivation;Carbon footprint;
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