Developing a management-oriented simulation model of pesticide emissions for use in the life cycle assessment of paddy rice cultivation
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Developing a management-oriented simulation model of pesticide emissions for use in the life cycle assessment of paddy rice cultivation. / Tang, Longlong; Hayashi, Kiyotada; Inao, Keiya; Birkved, Morten; Bruun, Sander; Kohyama, Kazunori; Shimura, Motoko.
I: Science of the Total Environment, Bind 716, 137034, 2020.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Developing a management-oriented simulation model of pesticide emissions for use in the life cycle assessment of paddy rice cultivation
AU - Tang, Longlong
AU - Hayashi, Kiyotada
AU - Inao, Keiya
AU - Birkved, Morten
AU - Bruun, Sander
AU - Kohyama, Kazunori
AU - Shimura, Motoko
PY - 2020
Y1 - 2020
N2 - Management of the negative environmental impact of pesticides used in paddy fields requires the quantification of the emissions reaching relevant environmental compartments and the determination of the factors that influence such emissions. The present study is the first to develop a simulation model for estimating the fractions emitted to the air (fair), surface water (fsw), and the fractions that leach vertically (fvl) of pesticides applied in paddy fields for life cycle assessments (LCA). The emission quantification methods are based on the properties of the active ingredients of the pesticides and management aspects such as formulations (granular or liquid) and the water-holding period following application. The emission fractions of 37 pesticides used commonly in Japan were estimated using the presented model. A sensitivity analysis was conducted by adjusting parameters applied in the model to reveal their influence on the emission fractions. The parameters influencing fair included the formulation applied, while the water-holding period and waterproofing of the levee influenced fsw regardless of the formulation adopted, suggesting that local management could effectively reduce emissions to surface water. In addition, soil organic carbon content influenced fvl greatly, suggesting considerable regional variation in the emission factor. The developed model is expected to greatly improve the realism of impact assessment of pesticide in LCAs for paddy rice cultivation, considering it fills a gap in the fate model used in LCAs to estimate pesticide emissions to air, surface water, and soil in paddy fields.
AB - Management of the negative environmental impact of pesticides used in paddy fields requires the quantification of the emissions reaching relevant environmental compartments and the determination of the factors that influence such emissions. The present study is the first to develop a simulation model for estimating the fractions emitted to the air (fair), surface water (fsw), and the fractions that leach vertically (fvl) of pesticides applied in paddy fields for life cycle assessments (LCA). The emission quantification methods are based on the properties of the active ingredients of the pesticides and management aspects such as formulations (granular or liquid) and the water-holding period following application. The emission fractions of 37 pesticides used commonly in Japan were estimated using the presented model. A sensitivity analysis was conducted by adjusting parameters applied in the model to reveal their influence on the emission fractions. The parameters influencing fair included the formulation applied, while the water-holding period and waterproofing of the levee influenced fsw regardless of the formulation adopted, suggesting that local management could effectively reduce emissions to surface water. In addition, soil organic carbon content influenced fvl greatly, suggesting considerable regional variation in the emission factor. The developed model is expected to greatly improve the realism of impact assessment of pesticide in LCAs for paddy rice cultivation, considering it fills a gap in the fate model used in LCAs to estimate pesticide emissions to air, surface water, and soil in paddy fields.
KW - Fate and distribution
KW - Life cycle assessment
KW - Management practices
KW - Paddy fields
KW - Pesticide
U2 - 10.1016/j.scitotenv.2020.137034
DO - 10.1016/j.scitotenv.2020.137034
M3 - Journal article
C2 - 32036139
AN - SCOPUS:85078890447
VL - 716
JO - Science of the Total Environment
JF - Science of the Total Environment
SN - 0048-9697
M1 - 137034
ER -
ID: 255694133