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 LCA dataset for research or optimization purposes, users should take into account the specific methodology used for data collection and measurement, including the static chamber method for nitrous oxide, the use of an Agilent 7890A gas chromatograph, and a TRAACS2000 flow analyzer for soil nitrate nitrogen and total phosphorus leaching. Heavy metal contents in organic fertilizers were determined using ICP-MS with appropriate digestion methods. The system boundary for the LCA is from cradle to farm gate, excluding infrastructure construction, agricultural machinery production, vegetable consumption, and waste emissions. Researchers should reference the detailed methods outlined in the provided literature when interpreting data and ensure that their applications are consistent with the experimental parameters and scope of the LCA. |
Technical purpose of product or process | The dataset describes the use of a conventional arched greenhouse for the long-term cultivation of various vegetables, with a specific focus on eggplant production. The experiment investigates three cultivation treatments: conventional, integrated, and organic. This information is pertinent to agricultural research and can be applied in the study and improvement of vegetable production processes, particularly for eggplants within a controlled greenhouse environment. Additionally, the dataset could be of interest to producers and researchers looking to optimize greenhouse crop rotation and management techniques, or those focusing on the environmental impact of agricultural practices. |
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 | 12c9fad7-7911-469d-919b-6efe7199c6e0 |
Date of last revision | 2024-04-20T14:44:47.294699+08:00 |
Data set version | 00.01.005 |
Permanent data set URI | https://lcadata.tiangong.world/showProcess.xhtml?uuid=12c9fad7-7911-469d-919b-6efe7199c6e0&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 | 983.75 MJ | 983.75 MJ | ||||||
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Elementary flow | Resources / Resources from water / Renewable material resources from water | 1.7618 m3 | 1.7618 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 | 0.0084 kg | 0.0084 kg | ||||||
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0.0407 | 0.0407 | ||||||||
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Elementary flow | Emissions / Emissions to air / Emissions to urban air close to ground | 88.14 kg | 88.14 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.0374 kg | 0.0374 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to lower stratosphere and upper troposphere | 0.0015 kg | 0.0015 kg | ||||||
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Product flow | Emissions / Metal and semimetal elements and ions | 0.3197 kg | 0.3197 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.2798 kg | 0.2798 kg | ||||||
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0.0146 | 0.0146 | ||||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.0121 kg | 0.0121 kg | ||||||
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Elementary flow | Emissions / Emissions to water / Emissions to fresh water | 0.1417 kg | 0.1417 kg | ||||||
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Elementary flow | Emissions / Emissions to water / Emissions to water, unspecified (long-term) | 0.7517 kg | 0.7517 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified (long-term) | 8.28E-8 kg | 8.28E-8 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to urban air close to ground | 1.29E-6 kBq | 1.29E-6 kBq | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified (long-term) | 6.47E-7 kg | 6.47E-7 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 3.24E-6 kg | 3.24E-6 kg | ||||||
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