Method for establishing carbon sink comprehensive measurement model based on difference between life cycle and habitat

Abstract

The invention relates to a carbon sink comprehensive measurement model establishment method based on life cycle and habitat difference, and the method comprises the steps: data collection and arrangement: obtaining carbon sink related data such as vegetation biomass growth rate, carbon absorption rate, soil organic matter content and the like, and carbon emission data in the whole process of a construction period, an operation period, a maintenance period and a decommissioning period; key factors are selected, and the core functions of the total carbon absorption amount, the soil carbon fixing amount and the life cycle carbon emission are analyzed; constructing a model, calculating the total carbon sink amount through a formula # imgabs0 #, introducing climate, soil and vegetation weighting factors, and adjusting the model to adapt to different habitat differences; and verifying and optimizing the model, and verifying the precision of the model in combination with field monitoring data. According to the method and the model provided by the invention, the carbon sink measurement model is comprehensively constructed by introducing the life cycle whole-flow carbon emission and habitat difference factors, so that the problems of neglect of life cycle, insufficient habitat adaptability and the like are effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental remediation, and particularly to a method for establishing a comprehensive carbon sink measurement model based on life cycle and habitat differences. Background Art

[0002] With the increasingly severe global climate change problem, carbon sink technology, as an important means to reduce the concentration of carbon dioxide in the atmosphere, has received extensive attention. Carbon sink is the ability of ecosystems such as forests, wetlands, and soils to absorb and store carbon dioxide in the atmosphere for a long time, which plays a key role in achieving the carbon neutrality goal. However, the existing carbon sink measurement methods have certain limitations, which are mainly reflected in the following aspects: 1. Ignoring the impact of the entire life cycle process: Most of the existing carbon sink measurement methods only focus on the positive carbon sink capacity of vegetation photosynthesis and soil carbon fixation, and do not fully consider the carbon emissions generated during the entire life cycle of the project (such as construction, operation, maintenance, and decommissioning phases). For example, mechanized planting, irrigation, and fertilization during forest afforestation will all bring carbon emissions, which will significantly offset the carbon sink capacity. If only carbon absorption is considered while ignoring the negative carbon emissions in the life cycle, it may lead to an overestimation or distortion of the carbon sink volume.

[0003] 2. Failing to fully reflect the impact of habitat differences on carbon sink capacity: Carbon sink capacity is significantly affected by regional habitat conditions (such as climate, soil, and vegetation type). For example, in arid regions with relatively high average annual temperature and less precipitation, the growth rate of vegetation is slow, and the carbon absorption is much lower than that in humid tropical forest areas. At the same time, different types of soils (such as black soil, sandy soil) have significant differences in carbon sink capacity due to differences in organic matter content and carbon fixation efficiency. Most of the existing carbon sink models are based on idealized or averaged conditions and do not perform weighted adjustments for the regional characteristics of different habitats, thus affecting the accuracy of carbon sink assessment results.

[0004] 3. Lack of quantification of the comprehensive effect of multiple factors on carbon sink capacity: Carbon sink capacity is the result of the comprehensive action of multiple factors, including vegetation type, growth rate, soil properties, life cycle carbon emissions, and climate conditions. Most of the current carbon sink measurement methods estimate carbon sink capacity using a single factor or a simple linear relationship, and fail to construct a comprehensive measurement model. For example, a model that only evaluates carbon sink capacity based on forest coverage rate cannot reflect the potential of soil carbon fixation, nor can it quantify the offset effect of life cycle carbon emissions.

[0005] 4. Limitations of application scenarios: Currently, most carbon sink models are mainly applicable to forest ecosystems and are difficult to be extended to various types of ecosystems such as urban green spaces, wetlands, and farmlands. With the advancement of the carbon neutrality goal, artificial ecosystems (such as urban greening and constructed wetlands) have gradually become an important part of carbon sinks, and there is an urgent need to establish a general carbon sink measurement method that can cover multiple ecosystems.

[0006] Therefore, we propose a method for establishing a comprehensive carbon sink measurement model based on life cycle and habitat differences to solve the above problems. Summary of the Invention

[0007] The purpose of the present invention is to solve the above technical problems and provide a method for establishing a comprehensive carbon sink measurement model based on life cycle and habitat differences.

[0008] To achieve the above purpose, the present invention is implemented as follows: A method for establishing a comprehensive carbon sink measurement model based on life cycle and habitat differences, the method comprising the following steps: The first step, data collection and collation: Obtain the vegetation growth data of the target area, including the biomass growth rate , the vegetation carbon absorption rate , the carbon sink capacity weight of the vegetation type ; Obtain the soil-related data of the target area, including the soil organic matter content , the soil carbon fixation amount ; Collect the carbon emission data throughout the life cycle, including the carbon emissions during the construction period , the carbon emissions during the operation period , the carbon emissions during the maintenance period and the carbon emissions during the decommissioning period ; Obtain the regional habitat factor data, including the annual average temperature , the optimal temperature , the annual precipitation , the optimal precipitation ; The second step, selection of key factors: Determine the following key factors according to data analysis: the total vegetation carbon absorption , the soil carbon fixation amount , the life cycle carbon emissions , and the habitat weighting factor, and the habitat weighting factor includes climate factor weighting , soil factor weighting and vegetation factor weighting ; The third step, model construction: The comprehensive carbon sink measurement mathematical model is: ,

[0009] : Total carbon sink volume; : : Carbon emissions during the life cycle; : Soil carbon sequestration volume; Incorporate habitat differences into the model, and the adjusted formula is: ; Step 4, Model verification and optimization: Verify the model using the field monitoring data of the target area, and optimize the adjustment coefficients of each parameter according to the actual data; Step 5, Output results: Calculate and generate the total carbon sink volume of the target area , analyze the impact of carbon emissions and habitat differences in each life cycle stage on the carbon sink, and form a carbon sink assessment report.

[0010] As a preferred technical solution of the present invention, the carbon emissions during the entire life cycle The calculation formula is:

[0011] Wherein: : Carbon emissions during the construction period of the stage; : Carbon emissions during the operation period; Total number of life cycle stages. : Carbon emissions during the maintenance period; : Carbon emissions during the decommissioning period.

[0012] As a preferred technical solution of the present invention, the vegetation carbon absorption is calculated based on the following formula:

[0013] Wherein: : Carbon absorption rate per unit biomass; : Growth rate of vegetation biomass.

[0014] As a preferred technical solution of the present invention, the soil carbon sequestration volume The calculation formula is:

[0015] Wherein: : Soil organic matter content; : Soil organic matter carbon sequestration efficiency coefficient

[0016] As a preferred technical solution of the present invention, the climate factor weighting Calculated based on the following formula:

[0017] Wherein: : Annual average temperature of the region; : Optimal temperature for carbon sink; : Annual precipitation of the region; Optimal precipitation for carbon sink; Adjustment coefficient of climate factors.

[0018] As a preferred technical solution of the present invention, the vegetation factor weighting Calculated based on the following formula:

[0019] Wherein: Vegetation adjustment coefficient of the regional specific ecosystem; Carbon sink capacity weight of vegetation types, including weight values of arbors, shrubs and herbaceous plants.

[0020] As a preferred technical solution of the present invention, the soil factor weighting Calculated based on the following formula:

[0021] Wherein: Soil organic matter content; Soil factor adjustment coefficient.

[0022] As a preferred technical solution of the present invention, the model verification includes the following steps: obtaining carbon sink monitoring data through field investigation, comparing the model output results; optimizing the weight parameters based on machine learning algorithms.

[0023] As a preferred technical solution of the present invention, the output carbon sink assessment report includes: calculation results of the total carbon sink ; carbon emission decomposition results at each life cycle stage; weight analysis of the impact of habitat differences on carbon sink; providing carbon neutrality optimization suggestions.

[0024] As a preferred technical solution of the present invention, the method is applicable to ecosystems such as forests, wetlands, grasslands, desertification control areas, etc., as well as urban green spaces and farmland ecosystems.

[0025] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention innovatively incorporates the carbon emissions throughout the entire life cycle (including the construction, operation, maintenance, and decommissioning phases) into the carbon sink measurement model. By quantifying positive carbon absorption and negative carbon emissions, it comprehensively evaluates the actual carbon sink capacity of carbon sink projects. By introducing a comprehensive formula and a multi-factor adjustment mechanism, it solves the problem of overestimation or distortion of carbon sink amounts in the existing technology, significantly improving the accuracy and scientific nature of the carbon sink assessment results.

[0026] 2. The present invention constructs a carbon sink weighted adjustment method based on habitat differences, fully considering the impacts of climate factors (such as annual average temperature and precipitation), soil factors (such as organic matter content and carbon fixation efficiency), and vegetation factors (such as type and growth rate) on the carbon sink capacity, significantly improving the adaptability of the model in different ecological regions. The model of the present invention is applicable not only to natural ecosystems (such as forests, grasslands, and wetlands), but also to artificial ecosystems (such as urban green spaces, constructed wetlands, and farmlands), having a wide range of application scenarios.

[0027] 3. The present invention can provide accurate carbon sink amount data, providing a scientific basis for the realization of the carbon neutrality goal, the reasonable pricing of the carbon trading market, and the management and protection of ecosystems. By accurately evaluating the carbon sink capacity, the present invention helps to formulate more fair, scientific, and sustainable carbon emission rights trading rules, providing strong technical support for addressing global climate change. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 is a flowchart of a method for establishing a comprehensive carbon sink measurement model based on the life cycle and habitat differences; Figure 2 is the data type included in the data collection and collation of the method for establishing a comprehensive carbon sink measurement model based on the life cycle and habitat differences. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] To make the objectives, technical solutions, and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions in the present invention in conjunction with the drawings in the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present invention belong to the scope of protection of the present invention.

[0031] The following is combined with the attachedFigure 1 and Figure 2 , a detailed description of the specific implementation manners of the present invention will be given.

[0032] Example 1: This example is a method for establishing a comprehensive carbon sink measurement model based on life cycle and habitat differences, and the method includes the following steps: The first step is data collection and collation, including vegetation growth data, soil data, life cycle carbon emission data, and habitat factor data, where: Collection of vegetation growth data: Through field surveys and remote sensing monitoring technologies, obtain the vegetation growth data within the target area, including: biomass growth rate , in units of tons / hectare / year, indicating the biomass growth of vegetation per year; carbon absorption rate of unit biomass of vegetation , in units of tons of carbon / ton of biomass, indicating the amount of carbon absorbed by plants during photosynthesis; carbon sink capacity weight of vegetation types , determined by the differences in carbon sink capacities of different vegetation (trees, shrubs, herbaceous plants).

[0033] Collection of soil data: Obtain the soil organic matter content within the target area , in units of grams / kilogram of soil, indicating the proportion of organic matter content in the unit soil; at the same time, obtain the soil carbon fixation amount , calculated from the amount of carbon fixed by soil organic matter.

[0034] Collection of life cycle carbon emission data: According to the whole process of the carbon sink project from construction to decommissioning, collect the following data: carbon emissions during the construction period , such as the emissions during mechanical operations in the process of vegetation planting; carbon emissions during the operation period , such as the emissions during vegetation maintenance and irrigation; carbon emissions during the maintenance period , such as the emissions during fertilization and pruning; carbon emissions during the decommissioning period , such as the emissions during project abandonment or vegetation cleaning.

[0035] Collection of habitat factor data: Obtain the climate factor and soil factor data of the target area, including: annual average temperature and optimal temperature annual precipitation and optimal precipitation .

[0036] The second step is to select key factors: Through data collation and analysis, select the following key factors: Total vegetation carbon absorption , used to evaluate the amount of carbon fixed by vegetation through photosynthesis; Soil carbon fixation amount , used to evaluate the amount of carbon fixed by soil organic matter; Total life cycle carbon emissions , used to quantify the carbon emissions generated during construction, operation, maintenance, and decommissioning; Climate, soil, and vegetation weighting factors, used to adjust the model to adapt to habitat differences in different regions.

[0037] Step 3, model construction: The comprehensive carbon sink measurement model is constructed through the following formula:

[0038] Where: : Comprehensive carbon sink quantity, unit: ton carbon / year; , is the total amount of carbon absorbed by vegetation; , is the carbon emissions throughout the process; , is the soil carbon fixation amount.

[0039] The adjustment formula for habitat factor weighting is:

[0040] Where: is the comprehensive carbon sink quantity, is the climate factor weighting, is the soil factor weighting is the vegetation factor weighting. The climate factor weighting is calculated based on the following formula:

[0041] Where: : Annual average temperature of the region; : Optimal temperature for carbon sink; : Annual precipitation of the region; Optimal precipitation for carbon sink; Adjustment coefficient of climate factor.

[0042] The soil factor weighting is calculated based on the following formula:

[0043] Where: Soil organic matter content; Soil organic matter carbon fixation efficiency coefficient.

[0044] The vegetation factor weighting is calculated based on the following formula:

[0045] Wherein: The vegetation adjustment coefficient of the region-specific ecosystem; The carbon sink capacity weight of the vegetation type, including the weight values of arbors, shrubs and herbaceous plants.

[0046] Fourth step, model verification and optimization: Verify the model using the field monitoring data of the target area, and optimize the adjustment coefficients of each parameter according to the actual data; The model verification includes the following steps: Obtain carbon sink monitoring data through field surveys, and compare the model output results; Optimize the weight parameters based on machine learning algorithms.

[0047] Fifth step, output results: Calculate and generate the comprehensive carbon sink volume of the target area , analyze the impact of carbon emissions and habitat differences in each life cycle stage on the carbon sink, and form a carbon sink assessment report. The output carbon sink assessment report includes: The calculation result of the comprehensive carbon sink volume ; The carbon emission decomposition results in each life cycle stage; The weight analysis of the impact of habitat differences on the carbon sink; Provide suggestions for carbon neutrality optimization.

[0048] The method for establishing a comprehensive carbon sink measurement model based on life cycle and habitat differences in this embodiment is applicable to ecosystems such as forests, wetlands, grasslands, desertification control areas, etc., as well as urban green spaces and farmland ecosystems.

[0049] Embodiment 2 This embodiment is applied to carbon sink measurement of forest ecosystems. Taking a certain tropical forest area as an example, the specific steps are as follows: Data collection: Vegetation data: The biomass growth rate of tropical forest arbors tons / hectare / year, the carbon absorption rate per unit biomass tons of carbon / ton of biomass; Vegetation type weight (arbor), soil data: Soil organic matter content g / kg, soil fixation efficiency coefficient .

[0050] Life cycle carbon emissions: Carbon emissions during the construction period tons of carbon / year, carbon emissions during the operation period tons of carbon / year, carbon emissions during the maintenance period tons of carbon / year, carbon emissions during the retirement period are negligible.

[0051] Habitat data: Annual average temperature °C, optimal temperature °C; Annual precipitation mm, optimal precipitation mm; Climate adjustment coefficient , 。

[0052] Model calculation: Total vegetation carbon absorption: tons of carbon per year; Total carbon emissions during the life cycle: tons of carbon per year.

[0053] Soil carbon sequestration: tons of carbon per year; Unweighted comprehensive carbon sink volume: tons of carbon per year; Climate factor weighting: ; Final weighted comprehensive carbon sink volume:

[0054] The method for establishing a comprehensive carbon sink measurement model based on life cycle and habitat differences in the present invention incorporates the carbon emissions throughout the life cycle into the carbon sink measurement model, significantly improving the accuracy and scientific nature of the carbon sink assessment results. The model established by the present invention is applicable not only to natural ecosystems (such as forests, grasslands, and wetlands), but also to artificial ecosystems (such as urban green spaces, constructed wetlands, and farmlands), and has a wide range of application scenarios.

[0055] The method of the present invention can provide accurate carbon sink volume data, providing a scientific basis for the realization of the carbon neutrality goal, the reasonable pricing of the carbon trading market, and the management and protection of ecosystems, and also helps to formulate more fair, scientific, and sustainable carbon emission rights trading rules, providing strong technical support for addressing global climate change.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A method for establishing a comprehensive carbon sink measurement model based on life cycle and habitat differences, characterized in that The method includes the following steps: First step, data collection and collation: Obtain the vegetation growth data of the target area, including the biomass growth rate , the vegetation carbon absorption rate , the carbon sink capacity weight of the vegetation type ; Obtain soil-related data of the target area, including soil organic matter content , soil carbon sequestration ; Collect carbon emission data throughout the entire life cycle, including carbon emissions during the construction period , carbon emissions during the operation period , carbon emissions during the maintenance period and carbon emissions during the decommissioning period ; Obtain regional habitat factor data, including the average annual temperature among climate factors , optimal temperature , annual precipitation , optimal precipitation ; Second step, selection of key factors: Determine the following key factors based on data analysis: total vegetation carbon absorption , soil carbon sequestration , life cycle carbon emissions , and the habitat weighting factor, which includes climate factor weighting , soil factor weighting and vegetation factor weighting ; the life cycle carbon emissions The calculation formula is: The calculation formula is: ， Wherein: : Carbon emissions during the construction period of the th stage; : Carbon emissions during the operation period; Total number of life cycle stages, : Carbon emissions during the maintenance period; : Carbon emissions during the decommissioning period, Third step, model construction: The comprehensive carbon sink measurement mathematical model is: ， : Total carbon sink; : : Life cycle carbon emissions; : Soil carbon sequestration; Incorporating habitat differences into the model, the adjusted formula is: ; Fourth step, model verification and optimization: Verify the model using the field monitoring data of the target area, and optimize the adjustment coefficients of each parameter according to the actual data; Fifth step, result output: Calculate and generate the comprehensive carbon sink volume of the target area , analyze the impacts of carbon emissions and habitat differences in each life cycle stage on the carbon sink, and form a carbon sink assessment report.

2. The method for establishing a comprehensive carbon sink measurement model based on life cycle and habitat differences according to claim 1, wherein The total vegetation carbon absorption is calculated based on the following formula: ， Wherein: : Carbon absorption rate per unit biomass; : Vegetation biomass growth rate.

3. The method for establishing a comprehensive carbon sink measurement model based on life cycle and habitat differences according to claim 1, wherein The amount of soil carbon sequestration The calculation formula is as follows: ， Wherein: : Soil organic matter content; : Soil organic matter carbon fixation efficiency coefficient.

4. The method for establishing a comprehensive carbon sink measurement model based on life cycle and habitat differences according to claim 1, wherein The climate factor weighting is calculated based on the following formula: ， Wherein: : Annual average temperature of the region; : Optimal temperature for carbon sink; : Annual precipitation of the region; Optimal precipitation for carbon sink; Adjustment coefficient of climate factors.

5. The method for establishing a comprehensive carbon sink measurement model based on life cycle and habitat differences according to claim 1, characterized in that, The weighted vegetation factor is calculated based on the following formula: ， Wherein: Vegetation adjustment coefficient of the region-specific ecosystem; Carbon sequestration capacity weights of vegetation types, including weight values of arbors, shrubs and herbaceous plants.

6. The method for establishing a comprehensive carbon sink measurement model based on life cycle and habitat differences according to claim 1, wherein The weighted soil factor is calculated based on the following formula: ， Wherein: Soil organic matter content; Carbon fixation efficiency coefficient of soil organic matter.

7. The method for establishing a comprehensive carbon sink measurement model based on life cycle and habitat differences according to claim 1, characterized in that The model verification and optimization include the following steps: Obtain carbon sink monitoring data through field surveys and compare the model output results; Optimize the weight parameters based on machine learning algorithms.

8. The method for establishing a comprehensive carbon sink measurement model based on life cycle and habitat differences according to claim 1, characterized in that, The output carbon sink assessment report includes Total carbon sink Calculation result The carbon emission decomposition results at each life cycle stage; The weight analysis of the impact of habitat differences on carbon sinks; Provide suggestions for carbon neutrality optimization.

9. The method for establishing a comprehensive carbon sink measurement model based on life cycle and habitat differences according to claim 1, wherein The method is applicable to forest, wetland, grassland, desertification control area ecosystems, as well as urban green space and farmland ecosystems.

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