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 using this dataset for life cycle assessment, consider the system boundary as defined from cradle to farm gate. This includes agricultural input production, crop production, and transportation subsystems. Exclude the processes related to infrastructure construction, agricultural machinery production, vegetable consumption, and waste emissions. Pay attention to the methodological details provided for data collection and measurements, such as the static chamber method for nitrous oxide, free-flow leaching for soil nutrients, and ICP-MS for heavy metals in organic fertilizers. Ensure correct referencing of the research results from the provided literature for inventory analysis, specifically Liang Long [22] and [19] for detailed measurement processes. |
Technical purpose of product or process | This dataset focuses on the application of different treatment methods (conventional, integrated, and organic) in greenhouse vegetable production with an emphasis on eggplant growth. The arched greenhouse, which is 60 m in length and 7 m in width, facilitates the rotation of various vegetable crops twice a year, particularly nurturing eggplants from March to August over a 4-year period. Such data can inform agricultural best practices and sustainability assessments for both the local Chinese context and broader regions engaged in similar production techniques. |
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 | ||||
Validation | |||||
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Data generator | |
Data set generator / modeller | |
Data entry by | |
Time stamp (last saved) | 2024-03-19T16:00:41+08:00 |
Publication and ownership | |
UUID | 70cc74ed-78cb-455d-9d12-ea7d40c34660 |
Date of last revision | 2024-04-20T14:44:45.715207+08:00 |
Data set version | 00.01.005 |
Permanent data set URI | https://lcadata.tiangong.world/showProcess.xhtml?uuid=70cc74ed-78cb-455d-9d12-ea7d40c34660&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 | Energy carriers and technologies / Electricity | 633.58 MJ | 633.58 MJ | ||||||
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Elementary flow | Resources / Resources from water / Renewable material resources from water | 0.9177 m3 | 0.9177 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 | 0.0055 kg | 0.0055 kg | ||||||
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0.0221 | 0.0221 | ||||||||
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Elementary flow | Emissions / Emissions to air / Emissions to urban air close to ground | 46.82 kg | 46.82 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.0418 kg | 0.0418 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to lower stratosphere and upper troposphere | 8.0E-4 kg | 8.0E-4 kg | ||||||
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Product flow | Emissions / Metal and semimetal elements and ions | 0.1826 kg | 0.1826 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.1472 kg | 0.1472 kg | ||||||
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0.0226 | 0.0226 | ||||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.0045 kg | 0.0045 kg | ||||||
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Elementary flow | Emissions / Emissions to water / Emissions to fresh water | 0.0789 kg | 0.0789 kg | ||||||
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Elementary flow | Emissions / Emissions to water / Emissions to water, unspecified (long-term) | 0.4015 kg | 0.4015 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified (long-term) | 3.98E-8 kg | 3.98E-8 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to urban air close to ground | 6.21E-7 kBq | 6.21E-7 kBq | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified (long-term) | 3.11E-7 kg | 3.11E-7 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 1.55E-6 kg | 1.55E-6 kg | ||||||
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