Subway ecological carbon sink carbon sequestration estimation method and system

Abstract

The invention provides a subway ecological carbon sink carbon sequestration estimation method and system, relates to the field of quantitative models, and aims to solve the problems that research on urban rail transit carbon sink potential is still in a primary stage, mature models and methods are lacked, and existing estimation methods are poor in estimation efficiency. And the uncertainty of the ecological carbon sink estimation method of the urban rail transit cannot be effectively solved. The method comprises the following steps: determining the plant carbon sequestration amount of a target region by obtaining the ground space saving area and the ground ecological environment planting carbon sequestration amount of the target subway region, and calculating the target subway ecological carbon sequestration carbon sequestration amount according to the plant carbon sequestration amount of the target region and the subway operation carbon emission. The subway ecological carbon sink carbon sequestration amount can be accurately estimated, the carbon emission reduction amount is improved, and the accuracy and stability of model estimation are improved; the method can be directly applied to a subway ecological carbon emission reduction estimation system, and the problem that an ecological carbon sink estimation method of urban rail transit is uncertain is effectively solved.

Description

Technical Field

[0001] The present invention belongs to the field of quantitative models, and in particular relates to a method and system for estimating carbon fixation in subway ecological carbon sinks. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] As an important part of urban public transportation, rail transit is widely considered to be an important way to improve transportation efficiency, ease traffic congestion, increase the utilization rate of urban underground space, and achieve energy conservation and emission reduction due to its high speed, large capacity, low environmental impact, and land resource conservation. However, while promoting the green and low-carbon development of urban transportation and greatly improving travel convenience, urban rail transit also produces certain carbon emissions. How to reasonably quantify the carbon emissions of urban rail transit is a key issue in achieving carbon emission reduction in the rail transit sector.

[0004] Carbon sink estimation technology is increasingly used in the field of quantitative models. Through the process, activity or mechanism of removing carbon dioxide from the atmosphere, it can help make the road plant community configuration plan of the target subway area more practical, achieve efficient acquisition of ecological carbon emission reduction in the target subway area, and further determine the carbon emission savings in the target subway area.

[0005] At present, the research on the carbon sink potential of urban rail transit is still in its early stages, lacking mature models and methods. The total carbon emissions of provincial regions can only be calculated based on the summary inventory of information related to the absorbed greenhouse gases, resulting in great uncertainty in the ecological carbon sink estimation method of the target subway area.

[0006] In addition, although there are related ecological carbon sink estimation methods, such as Chinese patent CN117033927B which discloses a real-time monitoring, prediction and analysis method for carbon emissions in subway stations, the accuracy of carbon emission prediction can be improved by analyzing the actual data within the actual carbon emission boundary range. However, the carbon emission factors considered are not comprehensive, and there are problems such as poor interpretability and unclear carbon source detection range, which leads to inaccurate estimation of subway ecological carbon sinks. In other words, it still cannot effectively solve the uncertainty problem of ecological carbon sink estimation methods for urban rail transit. Summary of the invention

[0007] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a method for estimating carbon sequestration in subway ecological carbon sinks, which determines the carbon emission savings in the target area based on the carbon sequestration of plants in the target area, the carbon emissions from subway operations, and the carbon emissions savings of the subway. It can improve the carbon emission reduction of subway ecology, and at the same time has good interpretability, and can be directly applied to the subway ecological carbon emission reduction estimation system.

[0008] To achieve the above objectives, one or more embodiments of the present invention provide the following technical solutions:

[0009] The first aspect of the present invention discloses a method for estimating carbon sequestration in subway ecological carbon sinks, comprising:

[0010] Obtain the ground space saving area and ground ecological environment planting carbon sink carbon fixation amount in the target subway area;

[0011] Determine the amount of plant carbon sequestration in the target subway area based on the ground conservation area and the amount of carbon sequestration planted in the ground ecological environment;

[0012] Calculate the carbon sequestration of the subway ecological carbon sink based on the carbon sequestration of plants in the target subway area and the carbon emissions from subway operations;

[0013] Among them, the specific process of determining the carbon sequestration of plants in the target subway area is as follows:

[0014] Obtain the daily net assimilation per unit leaf area in the target metro area;

[0015] Based on the daily net assimilation, the carbon fixation per unit leaf area was obtained;

[0016] According to the carbon sequestration per unit leaf area, the carbon sequestration of the ground ecological environment planting carbon sink is obtained;

[0017] The carbon sequestration of plants in the target subway area is obtained based on the carbon sequestration of carbon sinks planted in the ground ecological environment.

[0018] As a further technical solution, the ground space saving area of ​​the target subway area is obtained. The specific process is as follows:

[0019] Convert the passenger flow in the target subway area into vehicle flow, and obtain the vehicle flow based on the ratio of pedestrians, motor vehicles and non-motor vehicles;

[0020] Based on the traffic volume of motor vehicles and the width of the road cross section, the actual area of ​​the road is obtained;

[0021] According to the actual area of ​​the road, the ground saving area of ​​the target subway area is obtained.

[0022] As a further technical solution, the traffic volume of motor vehicles is obtained, specifically:

[0023] According to the daily average passenger flow data of the target subway area, the daily pedestrian flow, motor vehicle flow, and non-motor vehicle flow of the target subway area are obtained;

[0024] According to the daily traffic volume of motor vehicles, the daily traffic volume of small passenger cars, the daily traffic volume of large passenger cars and the daily average traffic volume of motor vehicles are obtained.

[0025] As a further technical solution, the total carbon emissions of subway operations are obtained using the formula:

[0026] C e O y =U t ×E k,e +U s ×E k,e ;

[0027] Among them, C e O y is the total carbon emissions from subway operations, U t is the traction power consumption of subway trains, in kW / h; U s E is the power consumption of subway station power and lighting, in kW / h; k,e is the electricity emission factor, and its unit is kg CO2 e / kW·h.

[0028] As a further technical solution, the carbon emission savings in the target metro area are determined by the formula:

[0029] Q g =S×Q d ;

[0030] Among them, Q g represents the amount of carbon sequestration by plants in the target subway area, i.e., the amount of carbon emissions saved in the target subway area, Q d It represents the ground ecological environment planting carbon sink carbon fixation, S is the ground saved area in the target subway area.

[0031] In the second aspect, a subway ecological carbon sink carbon fixation estimation system is disclosed, comprising:

[0032] The data acquisition module is used to obtain the ground space saving area and the carbon sink carbon fixation amount of the ground ecological environment planting in the target subway area;

[0033] The plant carbon fixation calculation module is used to determine the plant carbon fixation in the target subway area according to the ground conservation area and the carbon fixation of the ground ecological environment planting carbon sink in the target subway area. The specific process of determining the plant carbon fixation in the target subway area is as follows: obtaining the daily net assimilation per unit leaf area of ​​the target subway area; obtaining the carbon fixation per unit leaf area according to the daily net assimilation; obtaining the carbon fixation per unit leaf area according to the carbon fixation per unit leaf area; obtaining the carbon fixation per unit leaf area according to the carbon fixation per unit leaf area; obtaining the plant carbon fixation in the target subway area according to the carbon fixation per unit leaf area;

[0034] The subway ecological carbon sink carbon fixation calculation module is used to calculate the subway ecological carbon sink carbon fixation based on the plant carbon fixation in the target subway area and the subway operation carbon emissions.

[0035] As a further technical solution, the data acquisition module includes:

[0036] A ground space saving module, used to obtain the ground space saving area of ​​the target subway area;

[0037] The ground ecological environment planting carbon sink measurement module is used to determine the amount of carbon sequestration by plants in the target subway area.

[0038] As a further technical solution, the ground space saving module includes: a subway passenger flow conversion unit, a road cross-section unit and a subway area saving unit.

[0039] The third aspect of the present invention is to provide a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above method when executing the program.

[0040] A fourth aspect of the present invention is to provide a computer-readable storage medium having a computer program stored thereon, which executes the steps of the above method when executed by a processor.

[0041] One or more of the above technical solutions have the following beneficial effects:

[0042] In this embodiment, the subway ecological carbon sink carbon fixation estimation method determines the plant carbon fixation in the target area by obtaining the ground space saving area and the ground ecological environment planting carbon sink carbon fixation in the target subway area, and determines the saved carbon emissions in the target area according to the plant carbon fixation in the target area and the subway operation carbon emissions. The factors affecting carbon emissions are comprehensive, and the carbon source detection range is clear. The subway ecological carbon sink carbon fixation can be accurately estimated, the carbon emission reduction of the subway ecology can be improved, and the accuracy and stability of the model estimation are improved; at the same time, it has good interpretability and can be directly applied to the subway ecological carbon emission reduction estimation system, which effectively solves the uncertainty problem of the ecological carbon sink estimation method of urban rail transit.

[0043] Advantages of additional aspects of the present invention will be given in part in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0045] Figure 1 This is a flowchart of the steps of a subway ecological carbon sink estimation method in the first embodiment.

[0046] Figure 2 The relevant road design style diagram in the first embodiment;

[0047] Figure 3This is a schematic diagram of the transformation of the ground area of ​​the subway in the first embodiment;

[0048] Figure 4 This is a diagram of the road carbon cycle process in the first embodiment of this invention;

[0049] Figure 5 This is the overall framework of the ecological carbon sink in the first embodiment. DETAILED DESCRIPTION

[0050] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0051] It should be noted that the terms used herein are for describing specific embodiments only and are not intended to be limiting of exemplary embodiments according to the present invention.

[0052] In the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0053] Embodiment 1

[0054] This embodiment discloses a method for estimating carbon sequestration in subway ecological carbon sinks.

[0055] In order to more clearly illustrate this embodiment, the implementation process of the subway ecological carbon sink carbon sequestration estimation method can be specifically described as follows:

[0056] A method for estimating carbon sequestration in subway ecological carbon sinks, comprising:

[0057] S1. Obtain the ground space saving area and ground ecological environment planting carbon sink carbon fixation amount in the target subway area;

[0058] S2. Determine the amount of plant carbon sequestration in the target subway area based on the ground conservation area and the amount of carbon sequestration planted in the ground ecological environment;

[0059] S3. Calculate the carbon sequestration of the target subway ecological carbon sink based on the carbon sequestration of plants in the target subway area and the carbon emissions from subway operations.

[0060] like Figure 1 , Figure 5 As shown, in step S1, the ground space saving area and the carbon sink carbon fixation amount of the ground ecological environment planting in the target subway area are obtained.

[0061] S11. Obtain the ground space saving area of ​​the target subway area.

[0062] The ground space saving module is used to obtain the ground saving area of ​​the target subway area by taking the traffic sharing rate as the main method, including: subway passenger flow conversion unit, road cross-section unit and subway saving area unit.

[0063] S111, converting the passenger flow in the target subway area into vehicle flow, and obtaining the vehicle flow of motor vehicles according to the ratio of pedestrians, motor vehicles and non-motor vehicles;

[0064] The subway passenger flow conversion unit is used to convert the passenger flow of the target subway area into vehicle flow. It converts the subway passenger volume directly into the ground passenger volume, and then calculates the motor vehicle flow based on the ratio of pedestrians, motor vehicles and non-motor vehicles.

[0065] S1111. Obtain the daily pedestrian flow, daily motor vehicle flow, and daily non-motor vehicle flow in the target subway area according to the daily average passenger flow data of the target subway area;

[0066] The annual passenger flow is obtained from the 12-month subway operation annual report data of a certain subway area, and then the daily average passenger flow of the subway operation is obtained. According to the daily average passenger flow data, and based on the ratio of pedestrians, motor vehicles and non-motor vehicles on the road in 1:4:2, the daily pedestrian flow, motor vehicle flow and non-motor vehicle flow of the subway area are calculated. The formula is:

[0067]

[0068] Among them, Ptv is the daily passenger volume of pedestrians, Ptu is the daily passenger volume of roads, Mpt is the daily passenger volume of motor vehicles, N-Mpt is the daily passenger volume of non-motor vehicles, A, B, and C represent road pedestrians, motor vehicles, and non-motor vehicles, respectively, and A:B:C=1:4:2.

[0069] After the above steps, the carbon emissions generated by passenger flow are fully considered, and the carbon emission collection factors are added to make the carbon emission collection factors more comprehensive and the subsequent ecological carbon sink estimation more accurate.

[0070] S1112. According to the daily traffic volume of motor vehicles, obtain the daily traffic volume of small passenger cars, the daily traffic volume of large passenger cars, and the daily average traffic volume of motor vehicles.

[0071] According to the daily traffic volume of motor vehicles Mpt, refer to the vehicle conversion coefficient in Table 1 to calculate the daily traffic volume of small passenger cars, daily traffic volume of large buses, and daily average traffic volume of motor vehicles. The formula is:

[0072]

[0073] Among them, PCU is the daily traffic volume of passenger cars, D is the proportion of passenger cars, and E is the proportion of large buses; P1 is the average number of passengers in a passenger car. If the actual calculation is based on the present invention, it is assumed that the value is 2 people on average; P2 is the average number of passengers in a large bus. If the actual calculation is based on the present invention, it is assumed that the value is 20 on average; LPCU is the daily traffic volume of large buses, ADT is the average daily traffic volume of motor vehicles, and LPCU is the daily traffic volume of large buses.

[0074] Table 1 Vehicle conversion factors

[0075] Vehicle Type Passenger car Large passenger car Large truck Articulated Truck Conversion factor 1.0 2.0 2.5 3.0

[0076] After the above steps, the carbon emissions generated by motor vehicles are fully considered, and the carbon emission collection factor is added, making the carbon emission collection factor more comprehensive and the subsequent ecological carbon sink estimation more accurate.

[0077] S112, based on the traffic volume of motor vehicles and the width of the road cross section, obtaining the actual area of ​​the road;

[0078] In this embodiment, a certain urban area has four lanes in both directions, and the lane width of the inner motor vehicle lane is designed to be 3.5 to 3.75 meters, and that of the non-motor vehicle lane is 1 to 1.5 meters, as shown in Table 2 and Table 3.

[0079] In addition, the road grade is determined according to the traffic volume, and the number of lanes of the road is determined according to the annual average daily traffic volume of passenger cars; the annual average daily traffic volume of equivalent passenger cars for a two-way four-lane expressway is 40,000 pcu to 80,000 pcu; the annual average daily traffic volume of equivalent passenger cars for a two-way six-lane expressway is 60,000 pcu to 120,000 pcu; and the annual average daily traffic volume of equivalent passenger cars for a two-way eight-lane expressway is 100,000 pcu to 160,000 pcu.

[0080] S1121. In the road cross section unit, calculate the road cross section width:

[0081] W=W pc +W pb +W p +W g (3)

[0082] Where W is the road cross-sectional width; W pc W is the width of the motor vehicle road surface; pb W is the width of the non-motorized vehicle lane; p is the sidewalk width; W g is the width of the green belt. p =2, W g is 0.5.

[0083] Table 2 Minimum width of a motor vehicle lane

[0084]

[0085] Table 3 Minimum width of sidewalks

[0086]

[0087] After the above steps, data preparation is provided for calculating the actual area of ​​the road.

[0088] S1122. Obtain the actual area of ​​the road according to the road cross-sectional width.

[0089] like Figure 2 As shown, in this embodiment, this relevant road design is adopted, and in the subway saving area unit, the actual road area is calculated according to the road cross-sectional width, and the formula is:

[0090] Ar=R-(W g ×L)

[0091] =W×LW g ×L

[0092] =(W pc +W pb +W p )×L (4)

[0093] Among them, L is the total length of a city’s subway, R is the road area, Ar is the actual road area, and W is the total length of a city’s subway. g is the width of the green belt.

[0094] By calculating the actual area, the input factors for carbon emission calculations are increased and improved, making the ecological carbon sink estimation more accurate.

[0095] S113. Obtain the ground saving area of ​​the target subway area according to the actual road area.

[0096] Calculate the actual ground road area occupied by the subway based on the actual road area Ar.

[0097] S=Ar-Se (5)

[0098] Among them, S represents the actual ground road area occupied by the subway, that is, the ground saved area in the subway area, Ar is the actual road area, and Se is the subway entrance area (the number of subway entrances of a certain line in a certain city is counted, and the saved area of ​​each subway entrance is about 500m2).

[0099] After the above steps, the ground saved area of ​​the target subway area is obtained, the carbon emission calculation input factors are improved, and accurate data support is provided for the calculation of ground ecological environment carbon sinks.

[0100] S12. Obtain the carbon sequestration amount of carbon sinks planted in the ground ecological environment.

[0101] The ground ecological environment planting carbon sink calculation module is used to determine the carbon sequestration capacity of the ground ecological environment planting carbon sink in the target subway area based on the net carbon fixed and accumulated by the vegetation in the target subway area and the configuration plan of the road plant community in the target subway area.

[0102] The ground ecological environment planting carbon sink calculation module includes: a plant carbon fixation unit, in which the ground ecological environment planting strategy of the target area is determined according to the ground saved area of ​​the target subway area and the carbon fixation of the ground ecological environment planting carbon sink to determine the plant carbon fixation in the target area.

[0103] The carbon emissions and carbon fixation calculation data of ground plant communities are taken as the research objects, and factors such as the energy consumption of subway trains and the carbon fixation and oxygen release of plants need to be considered.

[0104] The specific process is:

[0105] S121. Obtain the daily net assimilation per unit leaf area in the target subway area.

[0106] like Figure 3 As shown, in this embodiment, the carbon fixation per unit leaf area is calculated based on the conversion of subway to ground area, and the formula is:

[0107]

[0108] Where p is the daily net assimilation per unit leaf area, p i is the instantaneous light and speed at the initial measurement point, p i+1 is the instantaneous net photosynthetic rate at the next measuring point, t i is the time of the current measuring point, t i+1 The time for the next measurement point.

[0109] S122. Obtain the daily carbon fixation per unit leaf area based on the daily net assimilation.

[0110] According to the photosynthetic reaction equation (CO2+4H2O→CH2O+3H2O+O2), the CO2 fixation value for one day can be obtained, that is, the daily carbon fixation per unit leaf area can be obtained. The formula is:

[0111]

[0112] S123. Obtain the carbon sequestration amount of the planting carbon sink in the ground ecological environment based on the daily carbon sequestration amount per unit leaf area.

[0113] Based on the estimated daily carbon fixation per unit leaf area, combined with parameters such as plant canopy width, the estimated carbon fixation per unit land area can be obtained using the formula:

[0114]

[0115] Among them, LAI is the leaf area index of individual plants. is the daily carbon fixation per unit leaf area, is the daily carbon sequestration per unit land area.

[0116] Calculate the carbon sequestration amount of ground ecological environment planting carbon sink, the specific formula is:

[0117]

[0118] Among them, S y is the leaf area, Q d It indicates the carbon sequestration amount of the ground ecological environment planted carbon sink. is the daily carbon sequestration per unit land area.

[0119] like Figure 1 , Figure 5 As shown, in step S2, the carbon fixation amount of plants in the target subway area is determined according to the ground conservation area and the carbon fixation amount of carbon sinks planted in the ground ecological environment in the target subway area.

[0120] S21. Determine the ground ecological environment planting strategy for the target area according to the ground conservation area and the carbon sink and carbon fixation amount of the ground ecological environment planting in the target subway area.

[0121] Different planting strategies can be formulated according to the characteristics of specific regions, such as reshaping the abundance of urban habitats based on plant community design.

[0122] There are regular planting designs and natural planting designs, such as single tree planting, two species planting in pairs, three trees planting in clusters, and row planting.

[0123] S22. Determine the amount of carbon fixation by plants in the target area according to the planting strategy for the ground ecological environment of the target area.

[0124] According to the planting strategy of the ground ecological environment in the target area and the carbon sequestration of the ground ecological environment in the planting carbon sink in formula (9), the carbon sequestration of plants in the target subway area is calculated as follows:

[0125] Q g =S×Q d (10)

[0126] Among them, Q g represents the amount of carbon sequestration by plants in the target subway area, i.e., the amount of carbon emissions saved in the target subway area, Q d It represents the ground ecological environment planting carbon sink carbon fixation, S is the ground saved area in the target subway area.

[0127] like Figure 1 , Figure 5As shown, in step S3, the target subway ecological carbon sink carbon sequestration is calculated based on the target subway area plant carbon sequestration and subway operation carbon emissions.

[0128] The ecological carbon sink calculation module of the subway is based on the ecological carbon sink calculation module of the subway, which is used to determine the ecological carbon sink calculation of the target subway, that is, the carbon emissions saved by the subway, based on the carbon emissions during the operation of the target subway and the carbon fixation of the plant community in the ground plant ecological environment.

[0129] The ecological carbon sink calculation module of the subway includes the subway operation carbon emission unit and the subway saved carbon emission unit.

[0130] The subway operation carbon emission unit focuses on the carbon emissions caused by energy consumption during the operation of train acceleration, traction and environmental control systems, station power equipment, lighting equipment and other equipment.

[0131] like Figure 4 As shown, in this embodiment, the total carbon emissions from subway operations are calculated based on the road carbon cycle process, and the formula is:

[0132] C e O y =U t ×E k,e +U s ×E k,e (11)

[0133] Among them, C e O y is the total carbon emissions during the subway operation phase, U t is the traction power consumption of subway trains, in kW / h; U s E is the power consumption of subway station power and lighting, in kW / h; k,e is the electricity emission factor (national grid average), kgCO2 e / kW·h. The Development and Reform Commission will uniformly divide the grid boundaries. If the carbon emissions of rail transit in different cities are selected, the emission factor of the regional grid to which the city belongs will be selected as the basis for calculation.

[0134] After the above steps, the carbon emissions generated by subway operations are obtained, which supplements and improves the input conditions for carbon emission calculation and provides accurate data support for calculating subway ecological carbon sinks.

[0135] The subway carbon emission saving unit is used to determine the carbon emission saving of the target area according to the plant carbon fixation amount and the subway operation carbon emission of the target subway area.

[0136] According to the carbon sequestration of plants in the target subway area and the total carbon emissions from subway operations, the carbon sequestration of subway ecological carbon sinks is calculated. The specific formula is:

[0137] Q t =C e O y -Q g (12)

[0138] Among them, Q g is the carbon sequestration of plants in the target subway area, that is, the carbon emission savings in the target subway area, C e O y It is the total carbon emissions during the subway operation stage.

[0139] After the above steps,

[0140] Embodiment 2

[0141] The purpose of this embodiment is to provide a subway ecological carbon sink carbon fixation estimation system, including:

[0142] The data acquisition module is used to obtain the ground space saving area and the carbon sink carbon fixation amount of the ground ecological environment planting in the target subway area;

[0143] The plant carbon fixation calculation module is used to determine the plant carbon fixation in the target subway area according to the ground conservation area and the carbon fixation of the ground ecological environment planting carbon sink in the target subway area. The specific process of determining the plant carbon fixation in the target subway area is as follows: obtaining the daily net assimilation per unit leaf area of ​​the target subway area; obtaining the carbon fixation per unit leaf area according to the daily net assimilation; obtaining the carbon fixation per unit leaf area according to the carbon fixation per unit leaf area; obtaining the carbon fixation per unit leaf area according to the carbon fixation per unit leaf area; obtaining the plant carbon fixation in the target subway area according to the carbon fixation per unit leaf area;

[0144] The subway ecological carbon sink carbon fixation calculation module is used to determine the target subway ecological carbon sink carbon fixation amount based on the target subway area plant carbon fixation amount and subway operation carbon emissions.

[0145] A subway ecological carbon sink carbon sequestration estimation system in this embodiment implements a subway ecological carbon sink carbon sequestration estimation method in the first embodiment.

[0146] Embodiment 3

[0147] The purpose of this embodiment is to provide a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above method when executing the program.

[0148] Embodiment 4

[0149] The purpose of this embodiment is to provide a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the steps of the above method are performed.

[0150] The steps involved in the apparatus of the above embodiment correspond to the method embodiment 1, and the specific implementation method can refer to the relevant description part of embodiment 1. The term "computer-readable storage medium" should be understood as a single medium or multiple media including one or more instruction sets; it should also be understood to include any medium that can store, encode or carry an instruction set for execution by a processor and enable the processor to execute any method in the present invention.

[0151] Those skilled in the art should understand that the modules or steps of the present invention described above can be implemented by a general-purpose computer device, or alternatively, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. The present invention is not limited to any specific combination of hardware and software.

[0152] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A method for estimating carbon sequestration in subway ecological carbon sinks, characterized in that: include: Obtain the ground space saving area and ground ecological environment planting carbon sink carbon fixation amount in the target subway area; Determine the amount of plant carbon sequestration in the target subway area based on the ground conservation area and the amount of carbon sequestration planted in the ground ecological environment; Calculate the carbon sequestration of the target subway ecological carbon sink based on the carbon sequestration of plants in the target subway area and the carbon emissions from subway operations; Among them, the specific process of determining the carbon sequestration of plants in the target subway area is as follows: Obtain the daily net assimilation per unit leaf area in the target metro area; Based on the daily net assimilation, the daily carbon fixation per unit leaf area was obtained; Based on the daily carbon fixation per unit leaf area, the carbon fixation of plants in the target subway area was obtained.

2. A subway ecological carbon sink carbon sequestration estimation method as claimed in claim 1, characterized in that: Obtain the ground space saving area of ​​the target subway area. The specific process is as follows: Convert the passenger flow in the target subway area into vehicle flow, and obtain the vehicle flow based on the ratio of pedestrians, motor vehicles and non-motor vehicles; Based on the traffic volume of motor vehicles and the width of the road cross section, the actual area of ​​the road is obtained; According to the actual area of ​​the road, the ground saving area of ​​the target subway area is obtained.

3. A subway ecological carbon sink carbon sequestration estimation method as claimed in claim 2, characterized in that: The traffic volume of motor vehicles is: According to the daily average passenger flow data of the target subway area, the daily pedestrian flow, motor vehicle flow, and non-motor vehicle flow of the target subway area are obtained; According to the daily traffic volume of motor vehicles, the daily traffic volume of small passenger cars, the daily traffic volume of large passenger cars and the daily average traffic volume of motor vehicles are obtained.

4. A subway ecological carbon sink carbon sequestration estimation method as claimed in claim 1, characterized in that: Get the total carbon emissions of subway operations, the formula is C e ON y =U t ×E k,e +U s ×E k,e ; Among them, C e O y is the total carbon emissions during the subway operation phase, U t is the traction power consumption of subway trains, in kW / h; U s E is the power consumption of subway station power and lighting, in kW / h; k,e is the electricity emission factor, and its unit is kg CO2 e / kW·h.

5. A subway ecological carbon sink carbon sequestration estimation method as claimed in claim 1, characterized in that: Determine the target subway ecological carbon sink carbon fixation amount, the formula is: Q g =S×Q d ; Among them, Q g represents the amount of carbon sequestration by plants in the target subway area, i.e., the amount of carbon emissions saved in the target subway area, Q d It represents the ground ecological environment planting carbon sinks and carbon fixation, and S is the ground saved area in the target subway area.

6. A subway ecological carbon sink carbon sequestration estimation system, characterized in that: include: The data acquisition module is used to obtain the ground space saving area and the carbon sink carbon fixation amount of the ground ecological environment planting in the target subway area; The plant carbon fixation calculation module is used to determine the plant carbon fixation in the target subway area according to the ground conservation area and the carbon fixation of the ground ecological environment planting carbon sink in the target subway area. The specific process of determining the plant carbon fixation in the target subway area is as follows: obtaining the daily net assimilation per unit leaf area of ​​the target subway area; obtaining the carbon fixation per unit leaf area according to the daily net assimilation; obtaining the carbon fixation per unit leaf area according to the carbon fixation per unit leaf area; obtaining the carbon fixation per unit leaf area according to the carbon fixation per unit leaf area; obtaining the plant carbon fixation in the target subway area according to the carbon fixation per unit leaf area; The subway ecological carbon sink carbon fixation calculation module is used to calculate the subway ecological carbon sink carbon fixation based on the plant carbon fixation in the target subway area and the subway operation carbon emissions.

7. A subway ecological carbon sink carbon sequestration estimation system as claimed in claim 6, characterized in that: The data acquisition module includes: A ground space saving module, used to obtain the ground space saving area of ​​the target subway area; The ground ecological environment planting carbon sink measurement module is used to determine the amount of carbon sequestration by plants in the target subway area.

8. A subway ecological carbon sink carbon sequestration estimation system as claimed in claim 7, characterized in that: The ground space saving module includes: a subway passenger flow conversion unit, a road cross-section unit and a subway area saving unit.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps of the method described in any one of claims 1 to 5 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method described in any one of claims 1 to 5 are performed.

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