A method for constructing a carbon labeling system for rice cultivation
By establishing a carbon labeling system for rice cultivation, the problem of high carbon emissions in the rice cultivation industry and the inability to convert emission reduction benefits has been solved. The carbon emission reduction benefits brought about by the reduction in chemical fertilizers have been converted into product brand logos, which has enhanced the market competitiveness of low-carbon rice and consumers' right to know, and supported the realization of the "dual carbon" goals.
Patent Information
- Application Number
- CN202310008038.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-01-04
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2043-01-04
AI Technical Summary
Rice cultivation is one of the major threats to global warming, and my country's agricultural carbon emissions remain high. The lack of an effective rice cultivation carbon labeling system has resulted in the inability to convert carbon emission reduction dividends into market value-added.
A method for constructing a carbon labeling system for rice cultivation is provided, including a baseline survey of carbon emissions from rice production inputs, carbon emission reduction accounting based on fertilizer reduction, the construction of a carbon emission reduction grading assessment system and a carbon emission reduction labeling system. The emission reduction benefits are calculated through fertilizer reduction and graded assessment, ultimately achieving carbon labeling and identification.
The carbon emission reduction benefits brought about by the reduction of chemical fertilizers have been converted into product brand identification, promoting the added value of low-carbon rice, enhancing consumers' right to know and green consumption, strengthening the market competitiveness of low-carbon products, and supporting the realization of the "dual carbon" goals.
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Figure CN115984072B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of agricultural monitoring technology, and in particular to a method for constructing a rice planting carbon labeling system. Background Art
[0002] The global rice industry emits approximately 10-26 teragrams of methane annually, accounting for approximately 20% of atmospheric methane sources. Rice cultivation is increasingly becoming a major threat to global warming (Lu Xukai, 2018). Rice paddies are the largest source of methane emissions in agricultural carbon emissions. According to FAO statistics, methane emissions from rice paddies in China are equivalent to 110 million tons of carbon dioxide, accounting for 12.8% of total agricultural emissions. Currently, my country's agricultural carbon emissions are at a historical high. Promoting the low-carbon transformation of agricultural production is a key path to achieving high-quality agricultural development and a crucial responsibility for implementing the "dual carbon" goals in the agricultural sector. Reducing greenhouse gas emissions, including methane, is a crucial path for my country to address global climate change and achieve the "dual carbon" goals. Converting emission reduction benefits into market value is a key means of providing incentives for emission reductions.
[0003] From the perspective of the mechanism of methane production in rice paddies, flooding during rice production creates an anaerobic environment that is ideal for the survival of methanogens. Furthermore, the application of organic fertilizers, such as returning straw to the fields, adds a large amount of easily degradable organic matter to the soil, which serves as a substrate for methanogens, significantly increasing methane emissions from rice paddies (Liu Kechun et al., 2022). During the rice growth cycle, most methane is released into the atmosphere through the rice plant itself. Therefore, rice itself plays a crucial role in the entire methane production process in the rice paddy ecosystem (Lu Xukai, 2018). Methane emissions during the rice season are governed by multiple factors, the main influencing factors being soil organic matter, soil pH, soil Eh, soil texture, soil organic matter content, average annual temperature in the growing area, and average annual precipitation (Liu Kechun et al., 2022). Reducing methane emissions from rice fields involves all aspects of farmland management. Key measures include conservation tillage (no-till or reduced-till), water-saving irrigation, integrated rice farming, fertilization management, bioinhibitor application, and variety selection (Liu Kechun et al., 2022; Yang Guoying et al., 2020; Zou Xiaoxia et al., 2011; Li Maobai et al., 2010; Li Xianglan et al., 2008). Compared with tillage, no-tillage reduces methane emissions by approximately 30% (Zhao et al., 2016). In integrated rice farming systems, such as duck and fish farming, the disturbance of water and soil in the paddy field by ducks and fish affects gas exchange, increasing the soil's redox potential and thus reducing methane emissions (Cheng Chen et al., 2018). Compared with conventional farming systems, integrated rice farming systems (such as duck and fish farming) can significantly reduce methane emissions by 12.15% (Liu Kechun et al., 2022). Methane emissions from water-saving irrigation paddies are generally lower than those from conventional irrigation paddies. Different water-saving irrigation patterns have varying emission reduction effects (Cheng Chen et al., 2018; Zan Peng and Chen Yanping, 2018; Yue Jin et al., 2003). Controlled irrigation reduces methane emissions by 77.01%, significantly outperforming intermittent irrigation (55.35%) (Liu Kechun et al., 2022). Nitrogen fertilizer application significantly increases methane emissions from paddy fields compared to no nitrogen application (Liu Kechun et al., 2022). Organic fertilizer application also emits more methane than chemical fertilizer application. The rational combination of chemical and organic fertilizer application can improve soil fertility and reduce soil methane emissions (Jiao Yan et al., 2003). Compared with quick-acting fertilizers, controlled-release fertilizers or fertilization with bioinhibitors have a lower release rate and longer fertilizer effect, which can significantly reduce methane emissions by 18.52% (Liu Kechun et al., 2022; Dong Liang, 2020, Lin Kuangfei et al., 2000); biochar provides more reaction substrates for methane-oxidizing bacteria through its adsorption and other effects, accelerates the decline in the redox potential of paddy soil, enhances the soil's ability to oxidize methane, and provides suitable conditions for methane-oxidizing bacteria, thereby reducing methane emissions from paddy soil (Jiang Chen et al., 2013). Biochar return to the field significantly reduced methane emissions by 23.34% (Liu Kechun et al., 2022).Greenhouse gas emissions can be alleviated to a certain extent by screening excellent rice varieties with low methane emissions (Lu Xukai, 2018; Li Maobai et al., 2010). Wang Zengyuan et al. (1999) found that rice root size is the main factor determining the differences in methane emission flux among varieties.
[0004] Fertilization management (reducing the use of chemical fertilizers) is an important way to reduce emissions from rice paddies. It is estimated that every kilogram of chemical fertilizer reduction can lead to a 7-kilogram reduction in carbon dioxide equivalent emissions. Reducing carbon emissions from rice paddies requires tangible economic benefits. Currently, the main channels for monetization are promoting commodity value-added and price increases and carbon emission reduction trading markets. Internationally, countries such as the United Kingdom and France have implemented agricultural product carbon labeling systems to protect consumers' right to know and promote the green transformation of agricultural production. Agricultural product carbon labeling can play a role in clarifying the emission characteristics of the agricultural sector, guiding social production and consumption expectations, promoting the establishment and improvement of the agricultural carbon emissions monitoring, reporting and verification system (MRV system), mitigating potential carbon trade barriers, and providing credit guarantees for the development of carbon finance (Jin Shuqin et al., 2022). my country's agricultural product carbon labeling system is still in the exploratory stage. Since the 1990s, my country has gradually established a "three products and one standard" certification and labeling system for agricultural products. The manufacturing energy efficiency labeling system, officially implemented in 2005, provides an important reference for the incorporation of low-carbon labels into agricultural products. Currently, my country's agricultural product production sector is in the voluntary carbon labeling certification stage. Shandong Xiwang Food Co., Ltd. developed the first carbon label for its corn germ oil in China's edible oil industry. Tianmu fruit shoots from Lin'an, Zhejiang Province, also received the first carbon label in Zhejiang Province, claiming that each kilogram of Tianmu fruit shoots absorbs 43.53 grams of carbon dioxide (Jin Shuqin et al., 2022). Carbon labeling for agricultural products is gaining momentum, but it still only covers a few niche products. The rice industry has yet to establish a carbon labeling system for rice, making carbon labeling a competitive factor for rice products and increasing consumers' willingness to pay. Designing a carbon labeling system for rice cultivation would provide greater incentives for rice producers to reduce emissions; therefore, this paper proposes a method for establishing a carbon labeling system for rice cultivation. Summary of the Invention
[0005] The present invention aims to fill the gap in rice carbon identification and provide a method for constructing a rice planting carbon labeling system.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a method for constructing a carbon labeling system for rice cultivation, the method comprising the following steps:
[0007] Step S1: Baseline survey of carbon emissions from rice production inputs;
[0008] Step S2: establishing a carbon emission reduction accounting method based on fertilizer reduction;
[0009] Step S3: Constructing a hierarchical assessment system for carbon emission reduction of inputs based on production entities;
[0010] Step S4: Establish a carbon emission reduction labeling system for production entities.
[0011] As a preferred embodiment of the present invention, the baseline survey of carbon emissions from rice production inputs in step S1 includes collecting various rice production procedures in the target area, conducting a baseline survey on the application of fertilizer inputs and environmentally friendly production behaviors, determining the average level of fertilizer inputs such as chemical fertilizers and organic fertilizers in rice production in the target area, and using the carbon emission level of rice production inputs in the target area as the baseline for carbon emission reduction accounting.
[0012] As a preferred embodiment of the present invention, the carbon emission reduction accounting method based on fertilizer reduction in step S2 refers to clarifying the emission reduction factor and response coefficient on the basis of the average baseline, studying the carbon emission reduction calculation method brought about by fertilizer reduction under different production modes, and establishing an accounting method system.
[0013] Table 1 Main links of rice cultivation and their emission factors
[0014]
[0015] Note: Emission factors are based on sources such as IPCC (2006), domestic and foreign research institutions, and peer-reviewed mainstream academic journals, and are updated in a timely manner based on research progress.
[0016] Calculation method
[0017]
[0018] The calculation steps are shown in formula (1), EF i represents the emission factor of the ith link, Q i Represents the occurrence of the i-th link, EF i *Q i is the greenhouse gas emissions generated in the i-th link. The greenhouse gas emissions of all n links are added up to obtain the greenhouse gas emissions E of all rice planting links.
[0019] By comparing the greenhouse gas emissions after the implementation of fertilizer reduction with the baseline survey data, the emission reduction benefit ΔE generated by fertilizer reduction can be obtained.
[0020] As a preferred embodiment of the present invention, the carbon emission reduction grading assessment system in step S3 is: based on the carbon emission reduction accounting of the production entity's inputs, combined with the scoring of environmentally friendly production behaviors, a carbon emission reduction grading assessment system is constructed; the production entities are divided into four categories: "high emissions", "medium emissions", "low emissions" and "negative emissions".
[0021] As a preferred implementation scheme described in the present invention, the main contents of constructing a carbon emission reduction labeling system for production entities in step S4 are: establishing an initial verification, mid-term review, and regular monitoring mechanism for carbon emissions of production entity inputs, completing carbon label grading based on rice carbon emissions, completing the visual design of the production entity's carbon emission reduction label, and determining the label usage cycle and method.
[0022] Compared with the prior art, the present invention has the following beneficial effects:
[0023] Translating the carbon reduction benefits of reduced fertilizer use during rice production into a component of product branding not only protects consumers' right to be informed and contributes to the shift to green consumption, but also helps establish low-carbon attributes as a competitive advantage, boosting the value and price of low-carbon rice. From the perspective of achieving the "dual carbon" strategy, market-based approaches are a strong and sustainable driving force for achieving this policy goal. The carbon labeling system will help low-carbon products establish a competitive advantage in the market. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention.
[0025] Figure 1 This is a flow chart of a method for constructing a carbon labeling system for rice cultivation according to the present invention. DETAILED DESCRIPTION
[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0027] Refer to 1. To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a method for constructing a carbon labeling system for rice planting, the method comprising the following steps:
[0028] Step S1: Baseline survey of carbon emissions from rice production inputs;
[0029] Step S2: establishing a carbon emission reduction accounting method based on fertilizer reduction;
[0030] Step S3: Constructing a hierarchical assessment system for carbon emission reduction of inputs based on production entities;
[0031] Step S4: Establish a carbon emission reduction labeling system for production entities.
[0032] As a preferred embodiment of the present invention, the baseline survey of carbon emissions from rice production inputs in step S1 includes collecting various rice production procedures in the target area, conducting a baseline survey on the application of fertilizer inputs and environmentally friendly production behaviors, determining the average level of fertilizer inputs such as chemical fertilizers and organic fertilizers in rice production in the target area, and using the carbon emission level of rice production inputs in the target area as the baseline for carbon emission reduction accounting.
[0033] As a preferred embodiment of the present invention, the carbon emission reduction accounting method based on fertilizer reduction in step S2 refers to clarifying the emission reduction factor and response coefficient on the basis of the average baseline, studying the carbon emission reduction calculation method brought about by fertilizer reduction under different production modes, and establishing an accounting method system.
[0034] As a preferred embodiment of the present invention, the carbon emission reduction grading assessment system in step S3 is: based on the carbon emission reduction accounting of the production entity's inputs, combined with the scoring of environmentally friendly production behaviors, a carbon emission reduction grading assessment system is constructed; the production entities are divided into four categories: "high emissions", "medium emissions", "low emissions" and "negative emissions".
[0035] As a preferred implementation scheme described in the present invention, the main contents of constructing a carbon emission reduction labeling system for production entities in step S4 are: establishing an initial verification, mid-term review, and regular monitoring mechanism for carbon emissions of production entity inputs, completing carbon label grading based on rice carbon emissions, completing the visual design of the production entity's carbon emission reduction label, and determining the label usage cycle and method.
[0036] Example 1
[0037] Please combine Figure 1 A method for constructing a carbon labeling system for rice planting (this embodiment takes the method for constructing a carbon labeling system for rice planting in Hongze District, Huai'an City, Jiangsu Province as an example) includes the following steps:
[0038] Step S1: Baseline survey of carbon emissions from rice production inputs.
[0039] Collect rice production procedures from multiple regions in Jiangsu Province, focus on conducting baseline surveys on the application of fertilizer inputs and environmentally friendly production behaviors, clarify the average level of fertilizer inputs such as chemical fertilizers and organic fertilizers in rice production in Jiangsu Province, and use the carbon emission level of rice production inputs in Jiangsu Province as the baseline for carbon emission reduction accounting in the project implementation area.
[0040] Step S2 establishes a carbon emission reduction accounting method based on fertilizer reduction.
[0041] On the basis of the average baseline, the emission reduction factors and response coefficients are clarified, the calculation method of carbon emission reduction brought about by fertilizer reduction under different production models is studied, and an accounting method system is established.
[0042] Table 1 Main links of rice cultivation and their emission factors
[0043]
[0044] Note: Emission factors are based on sources such as IPCC (2006), domestic and foreign research institutions, and peer-reviewed mainstream academic journals, and are updated in a timely manner based on research progress.
[0045] Calculation method
[0046]
[0047] The calculation steps are shown in formula (1), EF i represents the emission factor of the ith link, Q i Represents the occurrence of the i-th link, EF i *Q i is the greenhouse gas emissions generated in the i-th link. The greenhouse gas emissions of all n links are added up to obtain the greenhouse gas emissions E of all rice planting links.
[0048] The main emission reduction link of this project is fertilizer reduction. By comparing the greenhouse gas emissions after fertilizer reduction with the baseline survey data, the emission reduction benefit ΔE generated by fertilizer reduction can be obtained.
[0049] Step S3 constructs a hierarchical assessment system for carbon emission reduction of inputs based on production entities.
[0050] A tiered carbon emissions assessment system was constructed based on the carbon emissions reduction accounting results of production entities' inputs, combined with a scoring system for environmentally friendly production behaviors. Using the Jiangsu Province baseline as a reference, the monitored production entities in Hongze District were categorized into four groups: "high emissions," "medium emissions," "low emissions," and "negative emissions."
[0051] Step S4 establishes a carbon emission reduction labeling system for production entities.
[0052] Establish an initial verification, mid-term review, and regular monitoring mechanism for carbon emissions of inputs of production entities monitored in Hongze District, complete carbon label grading based on rice carbon emissions, complete the visual design of carbon emission reduction logos for production entities monitored in Hongze District, and determine the logo usage cycle and method.
[0053] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.
[0054] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A method for constructing a carbon labeling system for rice cultivation, characterized in that: The method comprises the following steps: Step S1: Baseline survey of carbon emissions from rice production inputs; Step S2: establishing a carbon emission reduction accounting method based on fertilizer reduction; Step S3: Constructing a hierarchical assessment system for carbon emission reduction of inputs based on production entities; Step S4: Establish a carbon emission reduction labeling system for production entities; The rice production input carbon emission baseline survey in step S1 includes collecting various rice production procedures in the target area, conducting a baseline survey on the application of fertilizer inputs and environmentally friendly production behaviors, determining the average level of chemical fertilizer and organic fertilizer inputs in rice production in the target area, and using the carbon emission level of rice production inputs in the target area as the baseline for carbon emission reduction accounting; The carbon emission reduction accounting method based on fertilizer reduction in step S2 refers to clarifying the emission reduction factor and response coefficient on the basis of the average baseline, studying the carbon emission reduction calculation method brought about by fertilizer reduction under different production modes, and establishing an accounting method system. The calculation steps are shown in formula (1), EF i represents the emission factor of the ith link, Q i Represents the occurrence of the i-th link, EF i *Q i is the greenhouse gas emissions generated by the i-th link. The greenhouse gas emissions of all n links are summed up to obtain the greenhouse gas emissions E of all rice cultivation links. The greenhouse gas emissions after the implementation of fertilizer reduction are compared with the baseline survey data to obtain the emission reduction benefit ΔE generated by the fertilizer reduction. The carbon emission reduction grading assessment system in step S3 is constructed based on the carbon emission reduction accounting of the production entity's inputs and the scoring of environmentally friendly production behaviors. The production entities are divided into four categories: "high emission", "medium emission", "low emission" and "negative emission". The main contents of the construction of the carbon emission reduction labeling system for production entities in step S4 are: establishing an initial verification, mid-term review, and regular monitoring mechanism for the carbon emissions of production entity inputs, completing carbon label grading based on the carbon emissions of rice, completing the visual design of the production entity carbon emission reduction label, and determining the label usage cycle and usage method; Among them, n links include: irrigation, planting and breeding, and fertilization.