Key Data Set Information | |
Location | HD-HEB-CN |
Geographical representativeness description | Qu Zhou |
Reference year | 2002 |
Name |
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Use advice for data set | When utilizing this data set for Life Cycle Assessment (LCA), users should adhere to the specific methodological guidance provided for inventory analysis, impact assessment, and result interpretation stages. Attention should be paid to the system boundaries set from cradle to farm gate, ensuring to exclude infrastructure construction, agricultural machinery production, vegetable consumption, and waste emissions processes. The methodological advice includes using static chamber methods for collecting nitrous oxide emissions and ICP-MS for analyzing heavy metals in organic fertilizers. It is imperative to reference the detailed analytical procedures as documented in the indicated literature to ensure accuracy and consistency with the original research methodologies. |
Technical purpose of product or process | The data set represents the conventional production of vegetables in a long-term positioning experiment conducted in Qu Zhou's greenhouse facility. The information is applicable for analyses focusing on the environmental impact and resource usage in conventional vegetable cultivation practices, specifically pertaining to eggplant growth. It may be used in agricultural studies, governmental policymaking, and industrial agricultural planning to understand the environmental implications of using conventional, integrated, and organic methods. |
Classification |
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General comment on data set | The solar greenhouse used in the experiment is an arch type with a length of 60 m and a width of 7 m. In the greenhouse, a variety of vegetables were rotated (two crops a year). In this study, eggplant seeds grew from March to August every year, and the experiment was carried out for the period of 4 years (2013 to 2016). Three treatment modes were set up in the experiment: (1) Conventional mode: the traditional greenhouse management mode of local farmers was adopted, mainly chemical fertilizer was applied, and a small amount of organic fertilizer was applied. ② Comprehensive mode: the amount of organic fertilizer and chemical fertilizer applied is 50% of the amount applied in organic and conventional mode, respectively. The biological control method is mainly used for disease and pest control, and low-toxicity and low-residue chemical pesticides are used for treatment in severe cases. (3) Organic mode: According to the production standards of organic vegetables, only organic fertilizers (compost and chicken manure) are applied, and chemical fertilizers and pesticides are not used. Agricultural measures and physical control of pests and diseases are mainly used (such as using yellow board to lure and kill, insect control nets, etc.). The nitrogen application amount of the integrated and organic models was the same as that of the normal scale model, and the irrigation conditions of each treatment were consistent. The irrigation method was large flood irrigation (Table 1). |
Copyright | No |
Owner of data set | |
Quantitative reference | |
Reference flow(s) |
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Functional Unit | 1T eggplant |
Time representativeness | |
Data set valid until | 2017 |
Time representativeness description | The long-term positioning experiment for greenhouse vegetables started in March 2002. |
Technological representativeness | |
Technology description including background system | The experiment used a 60 m long and 7 m wide arched greenhouse for the cultivation of various vegetables in rotation (two crops per year). The study focused on the growth of eggplants from March to August each year, conducting a 4-year experiment from 2013 to 2016. Three treatments were applied: conventional, integrated, and organic. |
Flow diagram(s) or picture(s) |
LCI method and allocation | |||||
Type of data set | Unit process, single operation | ||||
Deviation from LCI method principle / explanations | None | ||||
Deviations from LCI method approaches / explanations | Life cycle assessment includes the following 4 steps: goal definition and scope delineation, inventory analysis, impact assessment, and result interpretation. Brief descriptions of the main steps are given below. | ||||
Deviation from modelling constants / explanations | None | ||||
Data sources, treatment and representativeness | |||||
Deviation from data cut-off and completeness principles / explanations | None | ||||
Data selection and combination principles | The inventory analysis includes the collection of data and quantitative processing of the data. In the agricultural input production subsystem, the pollutants produced by fertilizers, organic fertilizers, insecticides, mulching films, and diesel, etc., (including CO, CO2, NOx, SO2, CH4, N2O, and COD, etc.) and energy consumption are calculated referring to the research results of Liang Long [22]. | ||||
Deviation from data selection and combination principles / explanations | None | ||||
Data treatment and extrapolations principles | Nitrous oxide collection uses the static chamber method [19], and the measurement is conducted using the Agilent 7890A gas chromatograph. Soil nitrate nitrogen (NO3-N) and total phosphorus leaching are collected using a free-flow underground leaching collection device in agricultural fields, and after each irrigation, leachate is extracted using a pump within 3 to 5 days, and measured with a flow analyzer (TRAACS2000). The extraction of heavy metals (mainly considering Cu, Zn, Pb, and Cd) in organic fertilizers uses the nitric acid-hydrochloric acid-hydrofluoric acid digestion method, and the test liquid is measured by ICP-MS. When the crops are harvested, each harvest is weighed and recorded, taking the average of three times. Detailed measurement processes for each indicator are referenced in the literature [19]. | ||||
Deviation from data treatment and extrapolations principles / explanations | None | ||||
Data source(s) used for this data set | |||||
Completeness | |||||
Completeness of product model | No statement | ||||
???common.completenessOtherProblemField??? | The system boundary for the Life Cycle Assessment (LCA) in this study is set from cradle to farm gate, including the agricultural input production subsystem, the crop production subsystem, and the transportation subsystem, but does not include processes such as infrastructure construction, agricultural machinery production, vegetable consumption, and waste emissions. | ||||
Validation | |||||
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Data generator | |
Data set generator / modeller | |
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Time stamp (last saved) | 2024-04-24T12:41:56+08:00 |
Publication and ownership | |
UUID | d441d7cd-a005-4b57-bf32-db966c798684 |
Date of last revision | 2024-05-13T15:12:19.789751+08:00 |
Data set version | 01.00.005 |
Permanent data set URI | https://lcadata.tiangong.world/showProcess.xhtml?uuid=d441d7cd-a005-4b57-bf32-db966c798684&version=01.00.000&stock=TianGong |
Owner of data set | |
Copyright | No |
License type | Free of charge for all users and uses |
Inputs
Type of flow | Classification | Flow | Location | Mean amount | Resulting amount | Minimum amount | Maximum amount | ||
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Product flow | Materials production / Raw materials | 5.8 kg | 5.8 kg | ||||||
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Product flow | Materials production / Raw materials | 41.67 kg | 41.67 kg | ||||||
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Product flow | Energy carriers and technologies / Crude oil based fuels | 50.0 kg | 50.0 kg | ||||||
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Elementary flow | Resources / Resources from water / Renewable material resources from water | 9425.0 m3 | 9425.0 m3 | ||||||
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Product flow | Energy carriers and technologies / Electricity | 18.18 MJ | 18.18 MJ | ||||||
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Elementary flow | Land use / Land occupation | 85.34 m2*a | 85.34 m2*a | ||||||
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Elementary flow | Resources / Resources from water / Renewable material resources from water | 80.44 m3 | 80.44 m3 | ||||||
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Outputs
Type of flow | Classification | Flow | Location | Mean amount | Resulting amount | Minimum amount | Maximum amount | ||
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Product flow | Emissions / Other substance type | 1000.0 kg | 1000.0 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 1.24E-5 kg | 1.24E-5 kg | ||||||
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3.0E-4 | 3.0E-4 | ||||||||
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Elementary flow | Emissions / Emissions to air / Emissions to urban air close to ground | 1.36 kg | 1.36 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 1.1134 kg | 1.1134 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to lower stratosphere and upper troposphere | 0.179 kg | 0.179 kg | ||||||
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Product flow | Emissions / Metal and semimetal elements and ions | 0.002 kg | 0.002 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified (long-term) | 2.1173 kg | 2.1173 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.0017 kg | 0.0017 kg | ||||||
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2.99E-5 | 2.99E-5 | ||||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.0165 kg | 0.0165 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified (long-term) | 4.0E-4 kg | 4.0E-4 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to urban air close to ground | 0.0015 kBq | 0.0015 kBq | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified (long-term) | 0.0048 kg | 0.0048 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.0148 kg | 0.0148 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 5.0E-4 kg | 5.0E-4 kg | ||||||
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Product flow | Emissions / Pesticides | 0.032 kg | 0.032 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.0325 kg | 0.0325 kg | ||||||
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Elementary flow | Emissions / Emissions to soil / Emissions to agricultural soil | 0.0325 kg | 0.0325 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.0325 kg | 0.0325 kg | ||||||
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