Key Data Set Information | |
Location | ZY-GS-CN |
Geographical representativeness description | Ganzhou District |
Reference year | 2012 |
Name |
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Use advice for data set | Users of this LCA data set should ensure the appropriate application of the information to models or assessments that are specific to agricultural practices and environmental impact analyses within similar climatic and geographic locations. Care should be taken to apply the agricultural added value ratios correctly for comparative studies. Exclusions in the data due to incomplete information from respondents should be noted, and assumptions for these gaps should be clearly stated. The distinction between agricultural input and crop production systems must be recognized when analyzing the boundary system of the LCA. |
Technical purpose of product or process | The corn production process in Ganzhou District, Northwest (Zhangye), is applied in agricultural practices for the cultivation of corn crops which are essential for food, feed, and industrial raw material purposes. The data set represents information relevant for understanding the environmental impact of corn production in terms of resource use, energy consumption, and waste management in the specific geographic context of the downstream area of the Yangtze River. |
Classification |
Class name
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Hierarchy level
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General comment on data set | The article is based on research data collected from farmers and utilizes the theory of agricultural carbon footprint and life cycle assessment to quantitatively study the size and composition of the carbon footprint of the rice-wheat rotation system in the downstream area of the Yangtze River. Additionally, it further analyzes the factors that influence the carbon footprint. |
Copyright | No |
Owner of data set | |
Quantitative reference | |
Reference flow(s) |
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Functional Unit | 1 t |
Time representativeness | |
Data set valid until | 2012 |
Technological representativeness | |
Technology description including background system | LCA method is used to evaluate the agricultural system of seed corn production, which takes the whole process of product treatment from input to final output as the research object to conduct quantitative analysis and comparison, so as to evaluate the environmental impact of seed corn production [13]. In this paper, the mass of seed corn 1 t is used as the functional unit. The boundary of the system starts from the production of fertilizer and electricity, and ends from the output of agricultural products and pollutants in the crop planting process. In other words, there are two production systems, namely the agricultural material production system and the crop production system |
Flow diagram(s) or picture(s) |
LCI method and allocation | |||||
Type of data set | Unit process, single operation | ||||
LCI Method Principle | Attributional | ||||
Deviation from LCI method principle / explanations | None | ||||
Deviations from LCI method approaches / explanations | The system boundary starts with the production of chemical fertilizers and electricity, and the terminal boundary is the output of agricultural products and pollutants during the crop planting process. There are two production systems: the agricultural input production system and the crop production system. | ||||
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 data in this text comes from the statistical sampling survey of Zhangye city, and additional data obtained from a special survey conducted during the 2012 input-output table. In Ganzhou district, Jiantan town, Dangzhai village, and Xiaoman village were selected; in Linze county, Shahe town and Pingchuan town were selected; in Gaotai county, Xuanhua town, Xiangdao village, and Luotuo city township were chosen. After excluding incomplete data, a total of 72 household's effective data was obtained | ||||
Deviation from data selection and combination principles / explanations | None | ||||
Data treatment and extrapolations principles | Using a combination of stratified random sampling and typical sample selection methods, data were collected through questionnaire surveys and structured interviews with typical samples. The survey content revolves around all input production elements and economic costs, as well as resource consumption, etc. The output mainly focuses on product yield and the current economic value, as well as the quantity of waste generated and its disposal methods. | ||||
Deviation from data treatment and extrapolations principles / explanations | None | ||||
Data source(s) used for this data set | |||||
Sampling procedure | It is determined that the survey sample size in the three counties and districts of Zhangye city needs to add 80 household surveys. The composition of the samples maintains the principle of being consistent with the local agricultural added value ratio. The corresponding survey household numbers are determined according to the agricultural added value ratio of 7:5:8, that is, 28, 20, and 32 households are respectively drawn from the three counties and districts. | ||||
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) | 2024-03-20T21:29:40+08:00 |
Publication and ownership | |
UUID | 96e60265-ea3b-4716-8e27-0dc0bba9eec4 |
Date of last revision | 2024-04-20T14:33:21.667828+08:00 |
Data set version | 00.01.005 |
Permanent data set URI | https://lcadata.tiangong.world/showProcess.xhtml?uuid=96e60265-ea3b-4716-8e27-0dc0bba9eec4&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 / Inorganic chemicals | 79.7 kg | 79.7 kg | ||||
Elementary flow | Resources / Resources from ground / Non-renewable material resources from ground | 19.13 kg | 19.13 kg | ||||
Elementary flow | Resources / Resources from ground / Non-renewable element resources from ground | 21.68 kg | 21.68 kg | ||||
Product flow | Materials production / Agricultural production means | 255.05 kg | 255.05 kg | ||||
Product flow | Energy carriers and technologies / Electricity | 403.2 MJ | 403.2 MJ | ||||
Product flow | Materials production / Raw materials | 13.81 kg | 13.81 kg | ||||
Elementary flow | Resources / Resources from water / Renewable material resources from water | 711.03 m3 | 711.03 m3 |
Outputs
Type of flow | Classification | Flow | Location | Mean amount | Resulting amount | Minimum amount | Maximum amount |
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Product flow | Materials production / Other mineralic materials | 711.03 kg | 711.03 kg | ||||
Elementary flow | Emissions / Emissions to air / Emissions to urban air close to ground | 902.68 kg | 902.68 kg | ||||
Elementary flow | Emissions / Emissions to air / Emissions to air, indoor | 0.38 kg | 0.38 kg | ||||
Elementary flow | Emissions / Emissions to air / Emissions to lower stratosphere and upper troposphere | 4.9 kg | 4.9 kg | ||||
Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.05 kg | 0.05 kg | ||||
Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.43 kg | 0.43 kg | ||||
Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 2.71 kg | 2.71 kg | ||||
Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 36.48 kg | 36.48 kg | ||||
Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified (long-term) | 5.18 kg | 5.18 kg | ||||
Elementary flow | Emissions / Emissions to air / Emissions to urban air close to ground | 3.1 kg | 3.1 kg | ||||
Product flow | Emissions / Non-metallic or -semimetallic ions | 0.19 kg | 0.19 kg | ||||
Elementary flow | Emissions / Emissions to air / Emissions to non-urban air or from high stacks | 0.09 kg | 0.09 kg | ||||
Product flow | Emissions / Particles | 0.07 kg | 0.07 kg | ||||
Elementary flow | Emissions / Emissions to soil / Emissions to agricultural soil | 0.05 kg | 0.05 kg | ||||
Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified (long-term) | 2.0E-4 kg | 2.0E-4 kg | ||||
Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified (long-term) | 1.0E-5 kg | 1.0E-5 kg | ||||
Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified (long-term) | 5.0E-5 kg | 5.0E-5 kg | ||||
Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 8.0E-5 kg | 8.0E-5 kg | ||||
Product flow | Materials production / Food and renewable raw materials | 1.0 kg | 1.0 kg |