White spirit carbon emission accounting method based on full life cycle

Abstract

The invention relates to the technical field of carbon emission monitoring, and particularly discloses a white spirit carbon emission accounting method based on a full life cycle, and the method comprises the steps: firstly determining the life cycle boundary of white spirit production; establishing a production formula database of different types of baijiu; according to different provinces and raw material crop types, calculating carbon emission of the raw materials in an agricultural production stage; calculating carbon emission of raw material crops consumed by white spirit according to different white spirit production processes; and finally, calculating the energy consumption and the emission of carbon dioxide generated by fermentation reaction and alcohol decomposition in the white spirit production process. According to the white spirit carbon emission accounting method based on the whole life cycle, links of agricultural production, energy consumption, fermentation reaction, alcohol decomposition and the like are incorporated into a carbon emission accounting system based on the whole life cycle of white spirit, multi-source data such as agricultural resource utilization, energy consumption standards, fermentation chemical reaction formulas and the like are fused, and the carbon emission accounting system is established. The carbon emission of the white spirit is comprehensively checked, and more accurate carbon emission data support is provided for the white spirit industry.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of environmental science and technology, in particular to a liquor carbon emission accounting method based on the whole life cycle. BACKGROUND

[0002] Carbon emission, as a major source of greenhouse gas emission, has become an important indicator for measuring the environmental impact of enterprises and industries. In China, traditional industries such as liquor production have also been affected by carbon emission standards, and there is an urgent need to improve the identification, accounting and management capabilities of product carbon footprint without changing the existing production mode.

[0003] Liquor is a traditional liquor in China, with a wide consumer market and a deep cultural background. Its life cycle usually involves upstream raw material planting, production and energy input, alcohol fermentation and decomposition, etc. Each link will contribute to carbon emission. Under the background of green and low-carbon transformation, how to carry out carbon emission accounting and management at the product level in a systematic and comparable way has become a common problem in the industry.

[0004] The existing domestic and foreign research on liquor production carbon emission is relatively limited, and the research is mostly focused on the relationship between energy consumption and carbon emission, or only on single links such as fermentation and production energy consumption, lacking systematic analysis of the whole production chain. At the same time, the existing accounting methods do not fully consider the raw material use, energy consumption and alcohol decomposition, etc. They are often limited to a certain type of product or a certain production link, and it is difficult to fully reflect the carbon emission level under different production modes. The consideration of regional differences in energy structure and supply is not sufficient, which limits the comparability and extrapolation of the results.

[0005] In addition, the contribution of raw material planting stage to carbon emission cannot be ignored. The raw materials such as sorghum, corn and rice required for liquor production will produce a large amount of carbon emission in the planting process, such as the use of fertilizers, pesticides, agricultural films and irrigation. If this part is ignored or weakened in accounting, it will cause systematic bias and affect the effectiveness of subsequent target setting and emission reduction management.

[0006] The existing liquor carbon emission accounting methods mostly focus on energy or individual links, and fail to fully reflect the differences of whole life cycle and different production modes, and the regional heterogeneity is not enough. The accounting factors often use general coefficients, lacking targeted data support. Therefore, it is necessary to form a product carbon emission accounting and management framework with clear boundaries, unified caliber, auditable and regional adaptability, in order to improve the completeness, comparability and decision value of the results. SUMMARY

[0007] The application aims to provide a liquor carbon emission accounting method based on a whole life cycle, which realizes comprehensive and accurate accounting of carbon emissions in the whole liquor production process by covering the raw material agricultural production stage, the energy consumption stage, the fermentation stage and the alcohol decomposition stage.

[0008] To achieve the above-mentioned purpose, the application provides a liquor carbon emission accounting method based on a whole life cycle, which comprises the following steps: S1, determining the life cycle boundary of liquor production; S2, establishing a production formula database of different types of liquor; S3, calculating the carbon emission of the raw material agricultural production stage according to different provinces and raw material crop types; S4, calculating the carbon emission of raw material crops consumed by liquor according to different liquor production processes; S5, calculating the carbon dioxide emission generated by energy consumption, fermentation reaction and alcohol decomposition in the liquor production process.

[0009] Preferably, in S1, the life cycle boundary of liquor production is determined, and the life cycle boundary is drawn from the agricultural production link of raw material crops to the decomposition of liquor in the consumption process, and the carbon emission process of liquor includes four stages of raw material agricultural production stage, energy consumption stage, fermentation stage and alcohol decomposition stage; The carbon emission of the raw material agricultural production stage includes direct carbon emission and indirect carbon emission, the direct carbon emission includes the carbon emission generated by agricultural activities of planting various raw material crops and rural labor consumption, and the indirect carbon emission is the carbon emission caused by energy consumption, wherein the agricultural activities include fertilizer application, pesticide use, agricultural film use, agricultural machinery operation and farmland irrigation; The carbon emission of the energy consumption stage includes the carbon emission generated by energy consumption in the liquor production process; The carbon emission of the fermentation stage includes the carbon dioxide emission released in the process of saccharification of starch and metabolism of yeast to generate ethanol; The carbon emission of the alcohol decomposition stage includes the carbon emission generated in the process of alcohol oxidation decomposition into carbon dioxide and water.

[0010] Preferably, in S2, a production formula database including alcohol degree, raw grain ratio and amount of koji is established, which is used to determine the raw material crop consumption structure under unit output of different types of liquor and serves as a parameter for calculating the carbon emission of the agricultural production stage of liquor.

[0011] Preferably, in S3, the carbon emission of the raw material agricultural production stage is calculated according to different provinces and raw material crop types, and specifically: The resource consumption of various raw material crops in terms of fertilizer, pesticide, agricultural film, agricultural machinery and irrigation is proportionally decomposed according to the cost of agricultural resources, and the calculation formula is as follows: ; wherein, is the raw material crop carbon source agricultural resource utilization amount, is the carbon source agricultural resource utilization total amount, is the raw material crop carbon source agricultural resource utilization cost, is the raw material crop sowing area, ∈ {rice, wheat, corn, peas}, raw material crop type n= 4; While considering the consumption of rural labor force, the carbon emission coefficient method is used to calculate the agricultural carbon emission amount of different raw material crops, and the formula is as follows: ; wherein, is the agricultural carbon emission amount of the raw material crop ; is the carbon emission coefficient of the carbon source .

[0012] Preferably, in S4, the carbon emission of the raw material crop consumed by the liquor is calculated according to different liquor production processes, and the liquor is divided into pure grain liquor and non-pure grain liquor, and the amount of raw material crop consumed by the two types of liquor is calculated respectively. The consumption amount of raw material crop of pure grain liquor is calculated by using the alcohol content correction method, and the formula is as follows: ; wherein, represents the total amount of raw material crop consumed in 65-degree pure grain liquor, V is the actual alcohol content of the liquor; represents the amount of raw material crop consumed per unit output of liquor; P is the output of 65-degree liquor; p 纯粮 is the market share of pure grain liquor; The solid-liquid method non-pure grain liquor is composed of solid-state method pure grain liquor and liquid-state method liquor, and the consumption amount of raw material crop of the liquid-state liquor is calculated according to the following formula: ; ; ; wherein, represents the consumption amount of raw material crop in 65-degree non-pure grain liquor; consumption of raw material crops in the production of 65-degree non-grain solid-liquid liquor; consumption of raw material crops in the production of 65-degree non-grain solid-liquid liquor; p proportion of raw material crops in the production of 65-degree non-grain solid-liquid liquor; consumption of raw material crops in the production of 65-degree non-grain solid-liquid liquor; Based on the proportion of raw material crop consumption in the production of liquor to the total yield of the raw material crop, the carbon emissions generated by the raw material crop in the agricultural production process required for the production of liquor are calculated, and the formula is as follows: ; wherein, C 1 represents the carbon emissions of the raw material crop consumed in the agricultural production process for the production of liquor; represents the quantity of the first class of raw material crop consumed by the liquor; represents the total yield of the first class of raw material crop.

[0013] Preferably, S5 is specifically: The carbon emissions are calculated using the unit product energy consumption standard of base liquor, and the calculation formula is as follows: ; wherein, C 2 represents the carbon emissions of the energy consumption of liquor production; L w represents the yield of liquor; is the carbon emission coefficient of standard coal; E w is the standard coal consumption of liquor; According to the molecular weight of ethanol in the fermentation process, the generated carbon dioxide and carbon emissions are calculated, and the calculation formula is as follows: ; ; wherein, C 3 represents the total carbon emissions in the fermentation process; m 1 is the mass of ethanol; m 2 is the mass of carbon dioxide; The carbon emissions of the alcohol decomposition process are calculated by the following formula: ; ; wherein, C 4 represents the carbon emissions of the alcohol decomposition process, m ​​​3 represents the mass of carbon dioxide generated in the alcohol decomposition process; Obtained: ; Wherein, C represents the carbon emissions of the whole life cycle of liquor production.

[0014] Therefore, the present application adopts the above-mentioned one kind based on the whole life cycle's liquor carbon emission accounting method, the beneficial effects are as follows: (1) The present application improves the existing liquor production carbon emission accounting system, establishes a whole life cycle based liquor carbon emission accounting system, covers all aspects such as raw material planting, energy consumption, fermentation process and alcohol decomposition, avoids the problem of carbon emission underestimation caused by the existing method only focusing on a single production stage.

[0015] (2) The present application introduces raw material data, energy consumption standards and fermentation reaction stoichiometric relationship of different provinces and different raw material crops, combined with multi-source big data and fine parameter analysis, realizes the accurate accounting of carbon emissions of different types of liquor and different production modes, significantly improves the reliability and comparability of the calculation results.

[0016] (3) The present application accounts for carbon emissions of liquor production in different flavor types, different production processes and different regions, can reflect local differences, provide data support for regional carbon emission reduction policy making, and has better adaptability than the existing single production process or national average accounting method.

[0017] The technical solutions of the present application will be further described in detail below through the accompanying drawings and examples. DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the whole process diagram of an embodiment of the present application, a whole life cycle based liquor carbon emission accounting method; Figure 2 is the whole life cycle carbon emission accounting process diagram of an embodiment of the present application, a whole life cycle based liquor carbon emission accounting method; Figure 3 is the average value of unit area agricultural carbon emission of different raw material crops in each province during the research period of an embodiment of the present application, a whole life cycle based liquor carbon emission accounting method; Figure 4 is the proportion of carbon emission of Chinese liquor production links during the research period of an embodiment of the present application, a whole life cycle based liquor carbon emission accounting method. DETAILED DESCRIPTION

[0019] The technical solutions of the present application will be further described in detail below through the accompanying drawings and examples.

[0020] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0021] This invention selects 1998-2020 as the research period, comprehensively assesses the carbon emission links in the entire life cycle of liquor production in various provinces of China, and carries out refined carbon emission accounting work.

[0022] like Figure 1 As shown, the present invention provides a method for carbon emission accounting of liquor based on the entire life cycle, comprising the following steps: S1. Determine the life cycle boundary of baijiu production; Before calculating the carbon emissions of baijiu (Chinese liquor), it is first necessary to determine the life cycle boundary of baijiu production. This life cycle boundary begins at the agricultural production stage of the raw material crops and continues until the baijiu is decomposed during consumption. For example... Figure 2 As shown, the carbon emission process of baijiu (Chinese liquor) includes four stages: raw material agricultural production, energy consumption, fermentation, and alcohol decomposition.

[0023] ① Carbon emissions in the raw material agricultural production stage: including direct carbon emissions and indirect carbon emissions. Direct carbon emissions include carbon emissions generated by agricultural activities such as planting various raw material crops, including rice, wheat, barley, corn, sorghum, etc., and rural labor consumption. Indirect carbon emissions are carbon emissions caused by energy consumption. Among them, agricultural activities include fertilizer application, pesticide use, agricultural film use, agricultural machinery operation, and farmland irrigation.

[0024] ② Carbon emissions during the energy consumption stage: This includes carbon emissions generated from the consumption of energy such as standard coal, natural gas, and electricity during the production of baijiu (Chinese liquor).

[0025] ③ Carbon emissions during the fermentation stage: including carbon dioxide emissions released during starch saccharification and yeast metabolism to produce ethanol.

[0026] ④ Carbon emissions during the alcohol decomposition stage: This includes carbon emissions generated during the oxidation and decomposition of alcohol into carbon dioxide and water in the human body.

[0027] By setting this boundary, we can ensure that the carbon emission sources are covered throughout the entire process of liquor production, and avoid omissions or underestimations caused by incomplete system boundaries.

[0028] S2. Establish a database of production formulas for different types of baijiu; Based on representative baijiu varieties from various provinces across the country, a production formula database including alcohol content, raw grain ratio, and yeast usage was established, as shown in Table 1. This database is used to determine the raw material crop consumption structure per unit yield for different types of baijiu and serves as a parameter for calculating carbon emissions during the agricultural production stage of baijiu.

[0029] Table 1. Grain Consumption Coefficients of Typical Baijiu Species in Various Provinces and Cities ;

[0030] S3. Calculate the carbon emissions of the raw material agricultural production stage based on different provinces and raw material crop types, specifically: The main raw materials used in baijiu (Chinese liquor) production include rice, wheat, barley, corn, sorghum, and soybeans. Due to differences in farming practices, the carbon emission levels of these various raw materials differ significantly. Therefore, the first step in accurately verifying carbon emissions is to differentiate the carbon emission levels of each type of raw material. To calculate the agricultural carbon emissions of various raw materials, this invention uses the agricultural resource cost ratio instead of the resource utilization ratio to break down the resource consumption of each type of raw material in terms of fertilizers, pesticides, agricultural films, agricultural machinery, and irrigation. The calculation formula is as follows: ; in, Raw material crop carbon source Agricultural resource utilization It is a carbon source Total agricultural resource utilization Raw material crop carbon source Agricultural resource utilization costs, Raw material crop The sowing area ∈{rice, wheat, corn, peas}, types of raw materials n= 4.

[0031] Anthropogenic carbon emissions primarily originate from agricultural activities, including the use of fertilizers, pesticides, plastic film, machinery, and irrigation. Rural labor consumption is also considered, as agricultural activities require labor. The carbon emission factor method is used to calculate the agricultural carbon emissions for different raw material crops, as shown in the following formula: ; in, Raw material crop Agricultural carbon emissions; It is a carbon source The carbon emission coefficients are shown in Table 2. The carbon emission coefficients of agricultural sources during the raw material production stage are also shown in Table 2.

[0032] Table 2 Carbon Emission Coefficients for Major Agricultural Production Processes ; Based on the above calculation process, this invention conducted a verification analysis on the carbon emission accounting data of the entire life cycle of China's liquor industry from 1998 to 2020, and the results are as follows: Figure 3 As shown.

[0033] S4, calculate the carbon emissions of raw material crops consumed by different baijiu production processes; Baijiu is divided into pure grain baijiu and non-pure grain baijiu. Pure grain baijiu is usually mainly made of sorghum, supplemented by wheat, rice, glutinous rice and other raw material crops, without the addition of non-food substances or non-food alcohol. The specific raw material composition can refer to Table 1. Non-pure grain baijiu is mainly made of corn as raw material, fermented and distilled to produce edible alcohol, and then blended to produce baijiu. Because the production processes and raw materials of these two types of baijiu are different, the amount of raw material crops consumed by the two types of baijiu is calculated respectively.

[0034] Each province in China has its own unique baijiu production type. The dominant type and raw material crop use structure information of each province can be collected as the basis for the provincial baijiu raw material crop use structure, as shown in Table 1.

[0035] Considering that the alcohol content of representative baijiu in different regions is different from the standard statistical baijiu of 65 degrees, the alcohol content correction method is used to calculate the consumption of raw material crops for pure grain baijiu, and the formula is as follows: ; wherein, represents the total amount of raw material crops consumed in 65-degree pure grain baijiu, is the actual alcohol content of this type of baijiu; V represents the amount of raw material crops consumed per unit of baijiu output; is the output of 65-degree baijiu, 纯粮 is the market share of pure grain baijiu. P p Non-pure grain baijiu is divided into liquid-state method and solid-liquid method. The liquid-state method emphasizes that the main component of baijiu is edible alcohol, and fermentation occurs in a liquid environment. The solid-liquid method emphasizes that the main component of baijiu is a mixture of edible alcohol and pure grain baijiu, and fermentation occurs in a solid environment. Currently, specific data on the market share of the two is not available. Because the data of solid-liquid method baijiu is relatively easy to obtain, and it is more popular with consumers, it is assumed that 100% of the market is solid-liquid method baijiu.

[0036] Solid-liquid method non-pure grain baijiu is composed of solid-state method pure grain baijiu and liquid-state method baijiu, and the ratio of the two is a adjustable parameter. The raw material crop consumption of pure grain baijiu is calculated according to the formula above, and the raw material crop consumption of liquid-state baijiu is calculated according to the following formula:

[0037] ; ; ; ; wherein, represents the total amount of raw material crops consumed in 65-degree non-pure grain baijiu,​ Consumption amount; This indicates the raw materials used in 65-degree non-pure grain solid-liquid method baijiu. Consumption amount; This indicates the raw materials used in 65-degree non-pure grain liquid-process baijiu. Consumption amount; p This indicates the blending ratio of pure grain liquor in the solid-liquid process. This indicates the raw material crops consumed per unit output of 65-degree baijiu. Theoretically, 0.3-0.4 kg of corn can produce 0.228 kg of 95% edible alcohol, which means that 2.28 kg of corn is needed to produce 1 kg of 65% edible alcohol.

[0038] Based on the ratio of the amount of raw material crops consumed for brewing baijiu to the total yield of those raw material crops, the carbon emissions generated by the agricultural production process of the raw material crops required for brewing baijiu can be calculated using the following formula: ; in, C 1 represents the carbon emissions from the raw materials consumed in the production of baijiu during agricultural production. This indicates the amount of liquor consumed. The quantity of raw material crops; Indicates the first Total yield of raw material crops.

[0039] S5. Calculate the energy consumption, fermentation reaction and carbon dioxide emissions generated during the production of baijiu.

[0040] The production of baijiu (Chinese liquor) consumes a significant amount of energy. Due to a lack of detailed energy consumption data for baijiu production, this invention uses the unit product energy consumption standard of raw baijiu to calculate carbon emissions. The calculation formula is as follows: ; in, C 2 represents the carbon emissions from the energy consumption of baijiu production; L w This indicates the production volume of baijiu (calculated based on 65% alcohol content); The carbon emission coefficient for standard coal is 0.69. E w The standard coal consumption for baijiu production is 1,611 kg standard coal / kL. Currently, China does not have a nationwide standard for baijiu energy consumption, but some provinces have issued local standards. These local standards provide reference values ​​for energy consumption. The standard value of 1,611 kg standard coal / kL is used as the energy consumption standard for the baijiu production process.

[0041] When glucose is converted into ethanol during fermentation, an equivalent amount of carbon dioxide is produced. The chemical reaction formula for fermentation is as follows: ; According to the molecular weight of ethanol during fermentation, the amount of carbon dioxide and carbon emissions generated can be calculated using the following formula: ; ; where, C 3 represents the total carbon emissions during fermentation; m 1 is the mass of ethanol; m 2 is the mass of carbon dioxide.

[0042] The final consumption stage of alcohol is the decomposition process in the human body, and the decomposition reaction formula is as follows: ; ; ; According to these reaction formulas, each unit of alcohol will release 2 units of carbon dioxide. The carbon emissions of the alcohol decomposition process can be calculated by the following formula: ; ; where, C 4 represents the carbon emissions of the alcohol decomposition process, m 3 represents the mass of carbon dioxide produced during the alcohol decomposition process.

[0043] We get: ; where, C represents the carbon emissions of the whole life cycle of liquor production.

[0044] According to the above calculation process, the present application verifies the accounting data of carbon emissions of the whole life cycle of Chinese liquor industry from 1998 to 2020. As Figure 4 shown, the carbon emissions of alcohol decomposition are the most, accounting for more than one-third of the total carbon emissions of liquor production, followed by raw material agricultural production, which is the second largest source of carbon emissions. In comparison, although the energy consumption and fermentation process emissions are relatively small, their change trend is highly related to the overall production scale.

[0045] From the time series, the total carbon emissions of Chinese liquor in 1998 was about 13.006 million tons, and increased to about 15.999 million tons in 2020, showing an overall upward trend. During this period, the average annual emissions were about 17.613 million tons, with a peak of 32.389 million tons and a minimum of about 7.441 million tons, with a large fluctuation range. This shows that while liquor production is developing rapidly, its environmental burden is also gradually increasing.

[0046] The present application accounts for the carbon emissions per unit area of raw material crops in each province. The carbon emissions per unit area of main crops in each province differ greatly, among which the emission factors of A1 rice and wheat are 1.56 t / ha and 1.07 t / ha respectively, which are at a relatively high level; while A4 is only 0.79 t / ha and 0.64 t / ha, which is significantly lower. Overall, the emission intensity of raw material crops in North China is generally high, while in some western provinces it is relatively low, reflecting the significant differences in regional farming methods, energy input and crop structure.

[0047] Further combining the carbon emission factors per unit area of raw material crops in each province, the carbon emissions of the raw material agricultural production link are refined, reflecting the differences in liquor production in different regions. The average carbon emissions of A5 liquor are 547,000 tons, while A2 is only 96,000 tons. A5 has a large-scale liquor industry foundation, and the carbon emission intensity of raw material crops per unit area such as corn and sorghum is high, resulting in high carbon emissions in the agricultural and fermentation links.

[0048] On the contrary, A2 has low liquor production and lacks a large-scale raw material planting foundation, so the overall carbon emission level is significantly lower, and the data difference is reasonable. The results are consistent with the carbon emission characteristics brought by the differences in regional industrial scale and raw material structure, verifying the scientificity and applicability of the present application in regional difference analysis.

[0049] Therefore, the present application adopts the above-mentioned one kind of carbon emission accounting method of liquor based on the whole life cycle, which can completely cover the whole link of raw material planting, production energy consumption, fermentation and alcohol decomposition of liquor, avoiding omission; combined with the provincial formula data and production consumption correction formula, the accounting accuracy is improved; it can also reflect the regional and production differences, provide reliable data support for targeted carbon reduction of liquor industry and local emission reduction policy making, and help the green development of the industry.

[0050] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application and not to limit them, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the technical solutions of the present application can still be modified or replaced by equivalents, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present application.

Claims

1. A full-life-cycle-based baijiu carbon emission accounting method, characterized in that: The method comprises the following steps: S1, determining the life cycle boundary of liquor production; S2, establishing a production formula database of different types of liquor; S3, calculating the carbon emissions of raw material agricultural production stage according to different provinces and types of raw material crops; S4, calculating the carbon emissions of raw material crops consumed by liquor according to different liquor production processes; S5, calculating the carbon emissions of carbon dioxide generated in the process of energy consumption, fermentation reaction and alcohol decomposition in liquor production.

2. The method according to claim 1, wherein, In S1, the life cycle boundary of liquor production is determined, and the life cycle boundary is from the agricultural production stage of raw material crops to the decomposition of liquor in the consumption process. The carbon emission process of liquor includes four stages of raw material agricultural production stage, energy consumption stage, fermentation stage and alcohol decomposition stage; The carbon emissions of raw material agricultural production stage include direct carbon emissions and indirect carbon emissions. The direct carbon emissions include the carbon emissions generated by agricultural activities and rural labor consumption in the process of planting various raw material crops. The indirect carbon emissions are the carbon emissions caused by energy consumption. The agricultural activities include fertilizer application, pesticide use, agricultural film use, agricultural machinery operation and farmland irrigation; The carbon emissions of energy consumption stage include the carbon emissions generated by energy consumption in the process of liquor production; The carbon emissions of fermentation stage include the carbon emissions released in the process of starch saccharification and yeast metabolism to generate ethanol; The carbon emissions of alcohol decomposition stage include the carbon emissions generated in the process of alcohol oxidation decomposition into carbon dioxide and water.

3. The method according to claim 2, wherein, In S2, a production formula database including alcohol degree, raw grain ratio and koji dosage is established, which is used to determine the raw material crop consumption structure of different types of liquor per unit of output, and is used as a parameter for calculating the carbon emissions of the agricultural production stage of liquor.

4. The method according to claim 3, wherein, In S3, the carbon emissions of raw material agricultural production stage are calculated according to different provinces and types of raw material crops, which are specifically as follows: The resource consumption of various raw material crops in terms of fertilizer, pesticide, agricultural film, agricultural machinery and irrigation is proportionally decomposed according to the cost of agricultural resources, and the calculation formula is as follows: ； wherein, is a raw material crop carbon source agricultural resource utilization amount of carbon source agricultural resource utilization total amount of is a raw material crop carbon source agricultural resource utilization cost of is a raw material crop sowing area of ∈ {rice, wheat, corn, peas}, raw material crop type n= 4; Meanwhile, considering the consumption of rural labor, the carbon emission coefficient method is used to calculate the agricultural carbon emissions of different raw material crops, and the formula is as follows: ； wherein, is the agricultural carbon emission amount of the raw material crop ; is the carbon emission coefficient of the carbon source .

5. The full-life-cycle-based Baijiu carbon emission accounting method according to claim 4, characterized in that, In S4, the carbon emissions of raw material crops consumed by liquor are calculated according to different liquor production processes. Liquor is divided into pure grain liquor and non-pure grain liquor, and the consumption of raw material crops by the two types of liquor is calculated respectively; The consumption of raw material crops by pure grain liquor is calculated by using the alcohol degree correction method, and the formula is as follows: ； wherein, represents the total amount of raw material crops consumed in the production of 65-degree pure grain liquor, V represents the actual alcohol content of such liquor; represents the amount of raw material crops consumed per unit of liquor production; P represents the production of 65-degree liquor; p 纯粮 represents the market share of pure grain liquor.​​ The non-pure grain liquor by solid-liquid method is composed of solid-state pure grain liquor and liquid-state liquor. The consumption of raw material crops by liquid-state liquor is calculated according to the following formula: ； ； ； in, This indicates the raw materials used in 65-degree non-pure grain baijiu. Consumption amount; This indicates the raw materials used in 65-degree non-pure grain solid-liquid method baijiu. Consumption amount; This indicates the raw materials used in 65-degree non-pure grain liquid-process baijiu. Consumption amount, p This indicates the blending ratio of pure grain liquor in the solid-liquid process. This indicates the raw material crops consumed per unit output of 65-degree baijiu. Quantity; Based on the proportion of the consumption of raw material crops for brewing liquor to the total yield of the raw material crops, the carbon emissions generated in the agricultural production process of the raw material crops required for brewing liquor are calculated, and the formula is as follows: ； wherein, C 1 represents the carbon emission amount of raw material crops consumed by baijiu in the agricultural production process; represents the amount of the first class of raw material crops consumed by baijiu; represents the total yield of the first class of raw material crops.

6. The method according to claim 5, wherein, S5 is specifically as follows: The carbon emissions are calculated by using the unit product energy consumption standard of raw liquor, and the calculation formula is as follows: ； wherein, C 2 represents the carbon emission of the energy consumption in the production of the white spirit; L w represents the yield of the white spirit; is the carbon emission coefficient of the standard coal; E w is the standard coal consumption of the white spirit; According to the molecular weight of ethanol in the fermentation process, the carbon dioxide and carbon emissions generated are calculated, and the calculation formula is as follows: ； ； wherein, C 3 represents the total carbon emissions during the fermentation process; m 1 is the mass of ethanol; m 2 is the mass of carbon dioxide; The carbon emissions of alcohol decomposition process are calculated by the following formula: ； ； wherein, C 4 represents the carbon emissions of the alcohol decomposition process, m 3 represents the mass of carbon dioxide produced in the alcohol decomposition process; The result is as follows: ； wherein, C represents the carbon emissions of the whole life cycle of the production of the liquor.

Images