Method for determining zero-carbon watershed

Abstract

This application relates to the field of zero-carbon determination technology, and provides a method for determining a zero-carbon watershed. The method includes: obtaining the annual average carbon emissions, annual average carbon sink, and annual average clean energy carbon neutrality contribution of a target watershed; and determining the target watershed as a zero-carbon watershed based on the annual average carbon emissions, annual average carbon sink, and annual average clean energy carbon neutrality contribution. This application enables the scientific determination of zero-carbon watersheds in a manner adapted to the characteristics of the watershed, thereby helping to clarify the boundaries and connotations of zero-carbon construction and realizing the systematic advancement and practical exploration of zero-carbon construction.

Description

Technical Field

[0001] This application relates to the field of zero-carbon determination technology, specifically to a method for determining zero-carbon watersheds. Background Technology

[0002] Currently, climate change caused by carbon emissions has become one of the most pressing environmental issues globally, and mitigating climate change requires the joint efforts of the international community. Against this backdrop, watersheds, as the optimal spatial scale for achieving coordinated governance of the "mountains, rivers, forests, fields, lakes, and grasslands" community of life, have become key geographical units for achieving carbon neutrality. They can integrate functions such as emission reduction, carbon sequestration, and adaptive management, translating macro-climate goals into concrete and actionable implementation paths.

[0003] Currently, the concepts of zero-carbon communities and zero-carbon industrial parks have attracted increasing attention from all sectors of society. However, research on zero-carbon construction by treating watersheds as a complex natural-social system is still insufficient. On the one hand, related industries such as water conservancy have not yet clearly proposed a complete concept of zero-carbon watersheds. On the other hand, zero-carbon determination methods in other fields are not applicable to the determination of zero-carbon watersheds because they do not have watershed characteristics. This has resulted in a blank stage in the determination of zero-carbon watersheds, which further leads to the ambiguity of the boundaries and the lack of clarity in the connotation of zero-carbon construction, thus restricting the systematic advancement and practical exploration. Summary of the Invention

[0004] This application provides a method for determining zero-carbon watersheds, which addresses the current lack of expertise in this area, leading to blurred boundaries and unclear connotations in zero-carbon development, thus hindering systematic advancement and practical exploration.

[0005] This application provides a method for determining zero-carbon watersheds, including: To obtain the annual average carbon emissions, annual average carbon sink, and annual average carbon neutrality contribution of clean energy in the target watershed; Based on the average annual carbon emissions, the average annual carbon sink, and the average annual carbon neutrality contribution of clean energy, the target watershed is determined to be a zero-carbon watershed.

[0006] In one embodiment, obtaining the average annual carbon emissions of the target watershed includes: The annual average carbon emissions from domestic energy consumption, agricultural production activities, waste disposal, transportation, and other domestic consumption in the target watershed are obtained. The annual average carbon emissions of the target watershed are obtained based on the annual average carbon emissions from the energy consumption of daily life, the agricultural production activities, the waste disposal, the transportation, and other daily consumption.

[0007] In one embodiment, obtaining the average annual carbon sink of the target watershed includes: The annual average carbon sink of vegetation, soil, water bodies, and soil and water conservation measures in the target watershed are obtained. The annual average carbon sink of the target watershed is obtained based on the annual average carbon sink of the vegetation, the annual average carbon sink of the soil, the annual average carbon sink of the water body, and the annual average carbon sink of the soil and water conservation measures.

[0008] In one embodiment, obtaining the average annual clean energy carbon neutrality contribution of the target watershed includes: Obtain the average annual outward power transmission and grid baseline emission factor of the target watershed; Based on the average annual outward power transmission and the grid baseline emission factor, the average annual clean energy carbon neutrality contribution of the target watershed is obtained.

[0009] In one embodiment, determining that the target watershed is a zero-carbon watershed based on the average annual carbon emissions, the average annual carbon sink, and the average annual carbon neutrality contribution of clean energy includes: The corrected annual average carbon sink is obtained by deducting non-persistent risks from the aforementioned annual average carbon sink. The annual carbon absorption is obtained by summing the corrected annual average carbon sink and the annual average carbon neutrality contribution of clean energy. The ratio of the annual average carbon absorption to the annual average carbon emissions is calculated to obtain the annual average carbon neutrality rate; If the annual average carbon neutrality rate is greater than or equal to 100%, the target watershed is determined to be a zero-carbon watershed.

[0010] In one embodiment, obtaining the annual average carbon neutrality rate includes: When the annual carbon neutrality rate is less than 100%, analyze the structural composition of the annual carbon emissions and the annual carbon sink to identify the largest carbon source and key carbon sink in the target watershed. Based on the largest carbon source and the key carbon sink, a zero-carbon construction plan is formulated for the target watershed, and emission reduction and carbon sink increase measures are implemented. Then, the process returns to the steps of obtaining the annual average carbon emissions, annual average carbon sinks, and annual average carbon neutrality contribution of clean energy in the target watershed until the target watershed is determined to be a zero-carbon watershed.

[0011] In one embodiment, the annual carbon emissions from residential energy consumption are obtained based on the annual average consumption of coal, liquefied petroleum gas, electricity, and firewood. The annual carbon emissions from agricultural production activities are based on the annual use of fertilizers, pesticides, the annual planting area of ​​paddy fields under continuous flooding, the annual number of large livestock and manure management, and the annual fuel consumption of agricultural machinery. The annual carbon emissions from waste treatment are obtained based on the methods of treating crop straw, domestic waste, and domestic sewage. The annual carbon emissions from transportation are based on the annual fuel consumption of private cars / agricultural vehicles and the annual frequency of public transportation use. The annual carbon emissions from other consumer goods are calculated based on the annual number of express parcels.

[0012] In one embodiment, the annual carbon emissions from residential energy consumption, agricultural production activities, waste disposal, transportation, and other residential consumption are all calculated based on the emission factor method.

[0013] In one embodiment, the average annual carbon sequestration of vegetation is obtained based on the average annual carbon sequestration of arbor forests, the average annual carbon sequestration of shrub forests, and the average annual carbon sequestration of grasses; The average annual carbon sequestration of the soil is obtained based on the average annual increase in carbon sequestration of the soil in the plots where remediation measures have been implemented. The annual average carbon sink of the water body is obtained based on the annual average increase in carbon sink of the water body and the annual average increase in carbon sink of sediments in the water body; The annual average carbon sequestration of the soil and water conservation measures is obtained based on the annual average erosion reduction and emission reduction of the soil and water conservation measures.

[0014] In one embodiment, the annual average carbon sink of vegetation, the annual average carbon sink of soil, the annual average carbon sink of water body, and the annual average carbon sink of soil and water conservation measures are all calculated based on the carbon sequestration rate method or the net ecosystem productivity method.

[0015] The zero-carbon watershed determination method provided in this application obtains the annual average carbon emissions, annual average carbon sink, and annual average clean energy carbon neutrality contribution of the target watershed. Based on these data, the target watershed is determined to be a zero-carbon watershed. In this application, since watersheds typically contain numerous water conservancy and hydropower projects, the carbon neutrality effect of these projects in clean energy production has become an undeniable factor. Therefore, the annual average clean energy carbon neutrality contribution is introduced to characterize the carbon neutrality effect brought about by the watershed characteristics. This contribution, combined with the annual average carbon emissions and annual average carbon sink, is used to determine whether the target watershed is a zero-carbon watershed. This method enables the scientific determination of zero-carbon watersheds in a way that is adapted to the characteristics of the watershed, thereby helping to clarify the boundaries and connotations of zero-carbon construction and achieving the systematic advancement and practical exploration of zero-carbon construction. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is one of the flowcharts illustrating the zero-carbon watershed determination method provided in the embodiments of this application; Figure 2 This is the second flowchart illustrating the zero-carbon watershed determination method provided in the embodiments of this application; Figure 3 This is the third flowchart illustrating the zero-carbon watershed determination method provided in the embodiments of this application; Figure 4 This is the fourth flowchart illustrating the zero-carbon watershed determination method provided in the embodiments of this application; Figure 5 This is the fifth flowchart illustrating the zero-carbon watershed determination method provided in the embodiments of this application; Figure 6 This is a schematic diagram of the zero-carbon watershed construction technology route provided in the embodiments of this application; Figure 7 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] It should be noted that in the description of the embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. The terms "upper," "lower," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; and they can be internal connections between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0020] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class, without limiting the number of objects; for example, a first object can be one or more. Furthermore, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects have an "or" relationship.

[0021] Figure 1 This is one of the flowcharts illustrating the zero-carbon watershed determination method provided in this application. (Refer to...) Figure 1 This application provides a method for determining zero-carbon watersheds, which may include: Step 101: Obtain the annual average carbon emissions, annual average carbon sink, and annual average carbon neutrality contribution of clean energy in the target watershed. Step 102: Based on the average annual carbon emissions, average annual carbon sink, and average annual carbon neutrality contribution of clean energy, determine the target watershed as a zero-carbon watershed.

[0022] In step 101, the target watershed is a relatively complete and independent natural catchment area, which can be determined based on information from the geographic information system and / or field survey data.

[0023] For annual carbon emissions, the main carbon emission sources can be identified based on basic information such as population, number of households, land use structure, and industrial composition within the target watershed, and then the annual carbon emissions of these sources can be calculated.

[0024] For the annual average carbon sink, the main carbon sink carriers can be identified based on land use data within the target watershed, and then the annual average carbon sink of these carbon sink carriers can be calculated.

[0025] The annual average contribution of clean energy to carbon neutrality can be calculated based on basic information such as hydropower stations, photovoltaic power stations, and wind farms within the target basin, to obtain the annual scale of electricity transmitted to areas outside the target basin, and then convert it into the annual average contribution of clean energy to carbon neutrality.

[0026] In step 102, the annual average carbon sink and the annual average carbon neutrality contribution of clean energy both represent the absorption of carbon. Therefore, they can be comprehensively equivalent to the annual average carbon absorption and compared with the annual average carbon emissions. Based on the comparison results, the target watershed can be determined to be a zero-carbon watershed.

[0027] The zero-carbon watershed determination method provided in this embodiment obtains the annual average carbon emissions, annual average carbon sink, and annual average clean energy carbon neutrality contribution of the target watershed. Based on these data, the target watershed is determined to be a zero-carbon watershed. In this embodiment, since there are usually many water conservancy and hydropower projects within the watershed, the carbon neutrality effect of these projects in the clean energy production process has become an undeniable factor. Therefore, the annual average clean energy carbon neutrality contribution is introduced to characterize the carbon neutrality effect brought about by the watershed characteristics. This contribution, combined with the annual average carbon emissions and annual average carbon sink, is used to determine the target watershed as a zero-carbon watershed. This method enables the scientific determination of zero-carbon watersheds in a way that is adapted to the characteristics of the watershed, thereby helping to clarify the boundaries and connotations of zero-carbon construction and realize the systematic advancement and practical exploration of zero-carbon construction.

[0028] Figure 2 This is the second schematic flowchart of the zero-carbon watershed determination method provided in the embodiments of this application. (Refer to...) Figure 2 In one embodiment, step 101 may include: Step 201: Obtain the annual average carbon emissions from domestic energy consumption, agricultural production activities, waste disposal, transportation, and other domestic consumption in the target watershed. Step 202: Based on the annual average carbon emissions from residential energy consumption, agricultural production activities, waste disposal, transportation, and other residential consumption, obtain the annual average carbon emissions for the target watershed.

[0029] In step 201, the annual average carbon emissions from residential energy consumption, agricultural production activities, waste disposal, transportation, and other residential consumption can all be calculated using carbon emission activity data from the target watershed. Specifically: The annual carbon emissions from residential energy consumption are based on the annual average consumption of coal, liquefied petroleum gas, electricity, and firewood. The average annual carbon emissions from agricultural production activities are based on the average annual use of chemical fertilizers, the average annual use of pesticides, the average annual planting area of ​​paddy fields under continuous flooding, the average annual number of large livestock and manure management, and the average annual fuel consumption of agricultural machinery. The annual carbon emissions from waste treatment are based on the methods of treating crop straw, municipal solid waste, and municipal sewage. The annual carbon emissions from transportation are calculated based on the annual fuel consumption of private cars / agricultural vehicles and the annual frequency of public transportation use. The average annual carbon emissions from other consumer goods are calculated based on the average annual number of parcels delivered by courier.

[0030] These carbon emission activity data can be categorized into five dimensions—residential energy consumption, agricultural production, waste disposal, transportation, and other consumption—based on household questionnaire survey results, statistical data collection and analysis results, sampling monitoring results, and field visit results, as shown in the table below. This step can construct a watershed carbon emission accounting indicator system that includes one primary indicator (carbon emission source), five secondary indicators (the above five dimensions), and fifteen tertiary indicators, forming a systematic and structured carbon emission data foundation.

[0031] Table 1. Watershed Carbon Emission Accounting Indicator System

[0032] It should be noted that the watershed carbon emission accounting indicator system in Table 1 basically covers the main categories of carbon emission activities in the watershed. Different watersheds can select applicable indicators from the indicator system based on their actual conditions.

[0033] Furthermore, the annual carbon emissions from residential energy consumption, agricultural production activities, waste disposal, transportation, and other daily consumption are all calculated as carbon emissions by converting the corresponding tertiary indicators into carbon emissions using the emission factor method. Taking the annual carbon emissions from residential energy consumption as an example, assuming that the target basin's households purchase an average of 1500 tons of coal annually and consume an average of 5000 kWh of electricity annually, and referencing the "Guidelines for the Compilation of Provincial Greenhouse Gas Inventories" for emission factors, then: ; in, , ; =Average annual coal purchases by households Emission factor = 1500 tons 2.64 tons of CO2 / ton of coal = 3960 tCO2e; =Average annual household electricity consumption Emission factor = 5000 kWh 0.7 kg CO2 / kWh = 3.5 tCO2e.

[0034] but =3960 tCO2e 3.5 tCO2e = 3963.5 tCO2e.

[0035] It should be noted that since greenhouse gases include various gases such as carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O), for ease of comparison, the "Global Warming Potential (GWP)" is usually used to uniformly convert methane, nitrous oxide, etc., into "carbon dioxide equivalent (CO2e)". For example, the GWP value of methane is 25, so emitting 1 ton of methane has a carbon dioxide equivalent of 1 ton × 25 = 25 tons of CO2e. That is, if the greenhouse gas generated by a carbon emission activity is mainly methane, the emission factor must be multiplied by the methane GWP value of 25 when calculating the carbon emissions converted from that carbon emission activity; similarly, if the greenhouse gas generated by a carbon emission activity is mainly nitrous oxide, the emission factor must be multiplied by the nitrous oxide GWP value when calculating the carbon emissions converted from that carbon emission activity.

[0036] In step 202, the average annual carbon emissions from residential energy consumption in the target watershed are calculated based on the aforementioned steps. Average annual carbon emissions from agricultural production activities Annual carbon emissions from waste treatment Annual carbon emissions from transportation Annual carbon emissions from other consumer goods Then, the annual average carbon emissions of the target watershed can be calculated based on the following formula. The unit is tCO2e: ; This embodiment constructs a watershed carbon emission accounting indicator system comprising one primary indicator, five secondary indicators, and fifteen tertiary indicators, covering the main carbon emission activities in the watershed. Based on this watershed carbon emission accounting indicator system, the annual average carbon emissions of the target watershed are calculated from five dimensions—residential energy consumption, agricultural production, waste treatment, transportation, and other consumption—using the emission factor method. By establishing a universal carbon emission accounting system for the watershed scale, the scientific calculation of the annual average carbon emissions of target watersheds with different watershed characteristics is achieved.

[0037] Figure 3 This is the third flowchart illustrating the zero-carbon watershed determination method provided in this application. (Refer to...) Figure 3 In one embodiment, step 101 may include: Step 301: Obtain the annual average carbon sink of vegetation, soil, water bodies, and soil and water conservation measures in the target watershed. Step 302: Based on the annual average carbon sink of vegetation, soil, water bodies, and soil and water conservation measures, the annual average carbon sink of the target watershed is obtained.

[0038] In step 301, the annual average carbon sequestration of vegetation is obtained based on the annual average carbon sequestration of arbor forests, shrub forests, and grasses; the annual average carbon sequestration of soil is obtained based on the annual average carbon sequestration of soil in the plots where remediation measures are implemented; the annual average carbon sequestration of water bodies is obtained based on the annual average carbon sequestration of water bodies and the annual average carbon sequestration of water sediments; and the annual average carbon sequestration of soil and water conservation measures is obtained based on the annual average erosion reduction and emission reduction of soil and water conservation measures.

[0039] The above data can be obtained based on remote sensing image interpretation, vegetation net primary productivity data, soil and water sample collection and laboratory analysis, general soil loss equation, etc., as shown in the table below. This step can establish a watershed carbon sink accounting index system containing 1 primary index, 4 secondary indexes and 7 tertiary indexes, forming a systematic and structured carbon sink data foundation.

[0040] Table 2. Watershed Carbon Sequestration Accounting Indicator System

[0041] It should be noted that the watershed carbon sink accounting indicator system in Table 2 basically covers the main carbon sink carrier categories in the watershed. Different watersheds can select applicable indicators from the indicator system based on their actual conditions.

[0042] In step 302, the average annual carbon sink of the target watershed can be calculated based on the following formula. The unit is tCO2e: ; Among them, the average annual carbon sequestration of vegetation Average annual carbon sequestration in soil Average annual carbon sequestration in water bodies and the average annual carbon sequestration of soil and water conservation measures All can be calculated using the carbon sequestration rate method or the net ecosystem productivity method, referring to the "Technical Guidelines for Accounting for Gross Productive Value of Terrestrial Ecosystems".

[0043] This embodiment constructs a watershed carbon sink accounting indicator system comprising one primary indicator, four secondary indicators, and seven tertiary indicators, covering the main carbon sink carrier categories in the watershed. Based on this watershed carbon sink accounting indicator system, the annual average carbon sink of the target watershed is calculated from four dimensions: vegetation, soil, water body, and soil and water conservation measures, using the carbon sequestration rate method or the net ecosystem productivity method. By establishing a universal carbon sink accounting system for the watershed scale, the scientific calculation of the annual average carbon sink of target watersheds with different watershed characteristics is achieved.

[0044] Figure 4 This is the fourth flowchart illustrating the zero-carbon watershed determination method provided in this application. (Refer to...) Figure 4 In one embodiment, step 101 may include: Step 401: Obtain the average annual outward power transmission and grid baseline emission factor of the target watershed; Step 402: Based on the average annual outward transmission of electricity and the grid baseline emission factor, obtain the average annual clean energy carbon neutrality contribution of the target watershed.

[0045] Specifically, the annual average clean energy carbon neutrality contribution of the standard basin can be calculated based on the following formula. The unit is tCO2e: ; in, The average annual electricity transmitted outward from the target river basin, expressed in MWh. The baseline emission factor for the target watershed is expressed as tCO2 / Mwh.

[0046] In this embodiment, the annual average clean energy carbon neutrality contribution is calculated by multiplying the annual average outward power transmission of the target watershed by the grid baseline emission factor. This is used to measure the carbon neutrality effect of water conservancy and hydropower projects in the clean energy production process within the target watershed, thereby characterizing the watershed's features.

[0047] Figure 5 This is the fifth flowchart illustrating the zero-carbon watershed determination method provided in this application. (Refer to...) Figure 5 In one embodiment, step 102 may include: Step 501: Subtract non-persistent risks from the annual average carbon sink to obtain the corrected annual average carbon sink; Step 502: Calculate the sum of the corrected annual average carbon sink and the annual average carbon neutrality contribution of clean energy to obtain the annual average carbon absorption. Step 503: Calculate the ratio of annual carbon absorption to annual carbon emissions to obtain the annual carbon neutrality rate; Step 504: If the annual average carbon neutrality rate is greater than or equal to 100%, the target watershed is determined to be a zero-carbon watershed.

[0048] In step 501, for the watershed, since there may be risks of non-persistent carbon sink function caused by watershed characteristics, such as water damage and forest and grassland protection measures due to extreme weather, it is necessary to deduct the carbon sink loss caused by this risk from the annual average carbon sink to correct the annual average carbon sink and obtain the corrected annual average carbon sink.

[0049] In step 502, the annual average carbon sink and the annual average carbon neutrality contribution of clean energy both represent carbon absorption, and the two are added together to be equivalent to the annual average carbon absorption.

[0050] In step 503, the ratio of annual carbon absorption to annual carbon emissions is calculated to measure the proportion of annually offset carbon emissions to total annual carbon emissions, thus obtaining the annual carbon neutrality rate. Specifically, the annual carbon neutrality rate can be calculated based on the following formula. : ; in, The non-persistent risk deduction rate can be set based on actual circumstances and is not limited here. In this embodiment, it can be set to 1%. To correct the annual average carbon sequestration. This represents the average annual carbon absorption.

[0051] In step 504, if the annual average carbon neutrality rate is greater than or equal to 100%, it means that the total annual average carbon emissions can be completely offset, achieving zero carbon in the target watershed, and thus the target watershed is determined to be a zero carbon watershed.

[0052] This embodiment defines the criteria for zero-carbon watersheds within a relatively complete and independent natural catchment area, with the core objective of achieving carbon neutrality within the watershed unit. Furthermore, the calculation process takes into account the watershed's unique non-persistent risks and the contribution of clean energy to carbon neutrality, thus making the criteria highly compatible with the watershed and achieving accurate determination of zero-carbon watersheds.

[0053] In one embodiment, step 503 may be followed by: When the annual carbon neutrality rate is less than 100%, the structure of annual carbon emissions and annual carbon sinks is analyzed to identify the largest carbon source and key carbon sink in the target watershed. Based on the largest carbon source and key carbon sink, a zero-carbon construction plan is formulated for the target watershed. After implementing emission reduction and carbon sink enhancement measures, the process returns to obtaining the annual carbon emissions, annual carbon sinks, and annual clean energy carbon neutrality contribution of the target watershed until the target watershed is determined to be a zero-carbon watershed.

[0054] Reference Figure 6 When the annual average carbon neutrality rate is less than 100%, the specific steps may include: 1. Analyze the carbon source structure and carbon neutrality capacity structure of the target watershed, and identify the maximum carbon source and key carbon sink potential of the target watershed; 2. Based on the potential of the largest carbon source and key carbon sink, formulate targeted zero-carbon construction plans for the target river basin, clarify the emission reduction and carbon sink enhancement paths, and implement emission reduction and carbon sink enhancement measures on an annual cycle; In terms of emission reduction pathways, the main focus is on reducing carbon emission intensity. Implementable measures cover three aspects: energy structure transformation, transportation and buildings, and agriculture and waste management. Specifically: Energy structure transformation includes both residential and heating aspects as well as production energy consumption. Residential and heating aspects include promoting solar water heaters, energy-saving renovations of rural houses, and electric heating; production energy consumption aspects include installing photovoltaics in facility agriculture, installing photovoltaics in tourism facilities, and replacing streetlights with solar / LED lights. Transportation and construction includes promoting electric vehicles and using green materials and energy-efficient designs in new buildings. Agriculture and waste management includes agricultural production and waste treatment. Agricultural production includes soil testing and fertilizer recommendation, organic fertilizer substitution, intermittent irrigation of rice, and improvement of livestock and poultry manure management. Waste treatment includes eliminating open burning of straw and garbage, promoting classification and resource utilization, and building decentralized sewage treatment facilities to reduce anaerobic emissions of organic matter. In terms of carbon sequestration pathways, the main focus is on enhancing carbon absorption capacity. Implementable measures cover four aspects: improving forest and grassland quality, strengthening soil carbon sequestration, protecting and restoring wetlands, and increasing the development of clean energy. Specifically: Improving the quality of forests and grasslands includes protection, management, and afforestation. Protection includes strict protection of existing natural and mature forests with the highest carbon sequestration benefits. Management includes tending and replanting sparse and secondary forests to increase growth and carbon density. Afforestation includes scientific afforestation of suitable barren hills and wastelands, prioritizing native and high carbon sequestration tree species. Enhancing soil carbon sequestration includes both agricultural and engineering aspects. In agriculture, this includes promoting conservation tillage, such as no-till farming and straw mulching; increasing the application of organic fertilizers / planting green manure, etc. In engineering, this includes promoting soil and water conservation projects such as slope terracing and ditch management to reduce carbon loss. Wetland protection and restoration includes riparian zone protection and ecological restoration, reservoir and pond protection and ecological restoration, and marsh wetland protection and ecological restoration.

[0055] 3. Conduct watershed carbon neutrality monitoring and reassessment, i.e., return to steps 101 and 102 in the following year to recalculate. ; 4. If If the carbon neutrality is greater than or equal to 100%, the target watershed meets the zero-carbon watershed construction standard and achieves carbon neutrality; if... If it is less than 100%, repeat steps 1-3 until... Greater than or equal to 100%.

[0056] This embodiment takes carbon neutrality within the watershed unit as the core objective when the annual average carbon neutrality rate is less than 100%. It carries out systematic zero-carbon construction of the target watershed through emission reduction and carbon sequestration, and realizes a refined watershed sustainable development model with multiple objectives such as soil and water conservation, pollution control, ecological health and net-zero greenhouse gas emissions.

[0057] Figure 7 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application, such as... Figure 7 As shown, the electronic device may include: a processor 710, a communication interface 720, a memory 730, and a communication bus 740, wherein the processor 710, the communication interface 720, and the memory 730 communicate with each other via the communication bus 740. The processor 710 can call a computer program in the memory 730 to execute the steps of the zero-carbon watershed determination method, such as including: To obtain the annual average carbon emissions, annual average carbon sink, and annual average carbon neutrality contribution of clean energy in the target watershed; Based on the average annual carbon emissions, the average annual carbon sink, and the average annual carbon neutrality contribution of clean energy, the target watershed is determined to be a zero-carbon watershed.

[0058] Furthermore, the logical instructions in the aforementioned memory 730 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0059] On the other hand, this application also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can perform the steps of the zero-carbon watershed determination method provided in the above embodiments, such as including: To obtain the annual average carbon emissions, annual average carbon sink, and annual average carbon neutrality contribution of clean energy in the target watershed; Based on the average annual carbon emissions, the average annual carbon sink, and the average annual carbon neutrality contribution of clean energy, the target watershed is determined to be a zero-carbon watershed.

[0060] On the other hand, embodiments of this application also provide a non-transitory computer-readable storage medium storing a computer program thereon, the computer program being used to cause a processor to execute the steps of the zero-carbon watershed determination method provided in the above embodiments, for example including: To obtain the annual average carbon emissions, annual average carbon sink, and annual average carbon neutrality contribution of clean energy in the target watershed; Based on the average annual carbon emissions, the average annual carbon sink, and the average annual carbon neutrality contribution of clean energy, the target watershed is determined to be a zero-carbon watershed.

[0061] The non-transitory computer-readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to magnetic memory (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO)), optical memory (e.g., CD, DVD, BD, HVD), and semiconductor memory (e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)).

[0062] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method for determining zero-carbon watersheds, characterized in that, include: To obtain the annual average carbon emissions, annual average carbon sink, and annual average carbon neutrality contribution of clean energy in the target watershed; Based on the average annual carbon emissions, the average annual carbon sink, and the average annual carbon neutrality contribution of clean energy, the target watershed is determined to be a zero-carbon watershed.

2. The method for determining zero-carbon watersheds according to claim 1, characterized in that, Obtain the average annual carbon emissions for the target watershed, including: The annual average carbon emissions from domestic energy consumption, agricultural production activities, waste disposal, transportation, and other domestic consumption in the target watershed are obtained. The annual average carbon emissions of the target watershed are obtained based on the annual average carbon emissions from the energy consumption of daily life, the agricultural production activities, the waste disposal, the transportation, and other daily consumption.

3. The method for determining zero-carbon watersheds according to claim 1, characterized in that, Obtain the average annual carbon sink of the target watershed, including: The annual average carbon sink of vegetation, soil, water bodies, and soil and water conservation measures in the target watershed are obtained. The annual average carbon sink of the target watershed is obtained based on the annual average carbon sink of the vegetation, the annual average carbon sink of the soil, the annual average carbon sink of the water body, and the annual average carbon sink of the soil and water conservation measures.

4. The method for determining zero-carbon watersheds according to claim 1, characterized in that, Obtain the average annual clean energy carbon neutrality contribution of the target watershed, including: Obtain the average annual outward power transmission and grid baseline emission factor of the target watershed; Based on the average annual outward power transmission and the grid baseline emission factor, the average annual clean energy carbon neutrality contribution of the target watershed is obtained.

5. The method for determining zero-carbon watersheds according to claim 1, characterized in that, The determination of a target watershed as a zero-carbon watershed based on the average annual carbon emissions, the average annual carbon sink, and the average annual carbon neutrality contribution of clean energy includes: The corrected annual average carbon sink is obtained by deducting non-persistent risks from the aforementioned annual average carbon sink. The annual carbon absorption is obtained by summing the corrected annual average carbon sink and the annual average carbon neutrality contribution of clean energy. The ratio of the annual average carbon absorption to the annual average carbon emissions is calculated to obtain the annual average carbon neutrality rate; If the annual average carbon neutrality rate is greater than or equal to 100%, the target watershed is determined to be a zero-carbon watershed.

6. The method for determining zero-carbon watersheds according to claim 5, characterized in that, After obtaining the annual average carbon neutrality rate, the process includes: When the annual carbon neutrality rate is less than 100%, analyze the structural composition of the annual carbon emissions and the annual carbon sink to identify the largest carbon source and key carbon sink in the target watershed. Based on the largest carbon source and the key carbon sink, a zero-carbon construction plan is formulated for the target watershed, and emission reduction and carbon sink increase measures are implemented. Then, the process returns to the steps of obtaining the annual average carbon emissions, annual average carbon sinks, and annual average carbon neutrality contribution of clean energy in the target watershed until the target watershed is determined to be a zero-carbon watershed.

7. The method for determining zero-carbon watersheds according to claim 2, characterized in that, The annual carbon emissions from the energy consumption for daily life are based on the annual average consumption of coal, liquefied petroleum gas, electricity, and firewood. The annual carbon emissions from agricultural production activities are based on the annual use of fertilizers, pesticides, the annual planting area of ​​paddy fields under continuous flooding, the annual number of large livestock and manure management, and the annual fuel consumption of agricultural machinery. The annual carbon emissions from waste treatment are obtained based on the methods of treating crop straw, domestic waste, and domestic sewage. The annual carbon emissions from transportation are based on the annual fuel consumption of private cars / agricultural vehicles and the annual frequency of public transportation use. The annual carbon emissions from other consumer goods are calculated based on the annual number of express parcels.

8. The method for determining zero-carbon watersheds according to claim 2, characterized in that, The annual average carbon emissions from residential energy consumption, agricultural production activities, waste disposal, transportation, and other residential consumption are all calculated based on the emission factor method.

9. The method for determining zero-carbon watersheds according to claim 3, characterized in that, The annual average carbon sequestration of vegetation is obtained based on the annual average carbon sequestration of arbor forests, shrub forests, and grasses; The average annual carbon sequestration of the soil is obtained based on the average annual increase in carbon sequestration of the soil in the plots where remediation measures have been implemented. The annual average carbon sink of the water body is obtained based on the annual average increase in carbon sink of the water body and the annual average increase in carbon sink of sediments in the water body; The annual average carbon sequestration of the soil and water conservation measures is obtained based on the annual average erosion reduction and emission reduction of the soil and water conservation measures.

10. The method for determining zero-carbon watersheds according to claim 3, characterized in that, The annual average carbon sequestration of vegetation, the annual average carbon sequestration of soil, the annual average carbon sequestration of water bodies, and the annual average carbon sequestration of soil and water conservation measures are all calculated based on the carbon sequestration rate method or the net ecosystem productivity method.

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