CN115936292A - Neutralization method for carbon absorption by plants in vehicle emission on highway - Google Patents
Neutralization method for carbon absorption by plants in vehicle emission on highway Download PDFInfo
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Abstract
The invention discloses a method for neutralizing carbon absorbed by plants discharged by vehicles on a highway, which comprises the following steps: s1, calculating the carbon emission of the vehicles on the highway based on the existing charging and monitoring data; s2, calculating the carbon fixation amount of the existing green plants in the expressway; and S3, calculating the newly increased greening area of the expressway to enable the vehicle to discharge and the plants to absorb carbon for neutralization. The invention relates to the fields of traffic carbon emission, environmental engineering and the like, can be used for energy conservation and emission reduction in the traffic and transportation industry, and provides powerful technical support for carbon neutralization time points in the traffic and transportation industry in advance. Based on the existing charging and monitoring data, the carbon neutralization of the highway is realized only by expanding the greening area, the problem of outstanding resource and environment constraint is solved, and the high-quality development road with ecological priority and green and low carbon for highway traffic is promoted.
Description
Technical Field
The invention relates to the field of carbon emission and environmental engineering of traffic, in particular to a method for neutralizing carbon absorbed by plants and emitted by vehicles on a highway.
Background
With the accelerated industrialization and urbanization process and the continuous upgrading of consumption structures, the energy demand of China is increased rigidly, the resource and environment problems are still one of the bottlenecks restricting the development of the economy and the society of China, and the situation of energy conservation and emission reduction is severe. The strategic goal of double carbon requires the acceleration of the construction of low-carbon transportation systems. The carbon neutralization policy is implemented, and the promotion of low-carbon green transformation of transportation is important. At the same time, the role of plant greening as a carbon emission absorbent cannot be neglected.
According to the ecological technology screening and layout method (CN 201911046969.1) in urban relocation landscaping, by adopting a scheme of actively introducing historical data and current situation data and matching with an intelligent analysis library, the ecological technology and the layout scheme can be intelligently screened and evaluated according to the design purpose, so that intelligent help and design guidance are facilitated. The method realizes multi-level and multi-dimensional superposition analysis to perform different types of park green land suitable ecological technology application and layout, and can output a park green land ecological technology application system frame diagram and a park green land design scheme-based partition ecological technology layout diagram, thereby being capable of practically guiding the ecological design and construction of the city park green land and having remarkable promotion effect on the construction level and ecological service function of the city park green land. However, the highway plant greening planning in China still has a plurality of problems, such as: the whole planning design is lacked, and the greening schemes of all road sections are not uniform, so that the whole greening effect is not ideal; the species and the planting form of the plants are single, and blind spots exist in greening coverage; the greening idea is laggard, and the characteristics of beautiful appearance and light ecology are achieved.
Disclosure of Invention
The invention solves the technical problem that the method for carbon neutralization through vehicle emission and plant absorption on the highway is designed, can be used for energy conservation and emission reduction in the transportation industry, and provides powerful technical support for carbon neutralization time points in the transportation industry in advance. The method is based on the existing charging and monitoring data, a carbon emission calculation model is constructed to accurately calculate the carbon emission of vehicles in the highway network, meanwhile, the fixed carbon amount of the existing plant greening in the highway is calculated, the carbon emission amount of the highway which is not sealed by the plant greening is obtained, and the greening area required by realizing the carbon neutralization of the highway is estimated. A carbon neutralizing method by plant absorption for the carbon discharged from vehicles on highway is disclosed.
The invention is realized by at least one of the following technical schemes.
A highway vehicle emission-plant carbon absorption neutralization method comprises the following steps:
s1, calculating the carbon emission of the vehicles on the highway based on the existing charging and monitoring data;
s2, calculating the carbon fixation amount of the existing green plants in the expressway;
and S3, calculating the greening area required by carbon neutralization absorbed by plants discharged by vehicles on the highway.
Further, calculating the carbon emission of the highway vehicles based on the existing charging and monitoring data comprises the following steps:
s11, classifying the vehicles running on the expressway network;
s12, calculating the average hundred kilometer energy consumption value of each type of vehicle type:
firstly, acquiring a hundred-kilometer energy consumption value of each vehicle in the expressway network, and then calculating the average value of the hundred-kilometer energy consumption of each type of vehicle after classification:
in the formula (I), the compound is shown in the specification,
the hundred kilometer energy consumption value of the kth vehicle in the ith vehicle is fuel j, and n is the total vehicle frequency;
s13, calculating the consumption of each type of fuel
Multiplying the counted number of the vehicle types of each type by the average driving mileage and the average energy consumption to obtain the fuel consumption of each type of vehicle types:
in the formula, n i,j The number of vehicles of class i as fuel j; d i,j Average of class i vehicles for fuel jDriving mileage; consume i,j Fuel consumption of class i vehicle for fuel j;
s14, converting fuel consumption into kilogram standard coal
energy＝consume j ×α j (3)
In the formula, alpha j Conversion factor for converting fuel j to kilogram standard coal;
s15, calculating the carbon emission of the vehicle
Vehicle carbon emissions include CO 2 Emission amount and emission factor:
in the formula, AD j Refers to the activity level of the jth fuel; EF j CO of jth fuel 2 An emission factor;
AD j ＝NCV j ×FC j (5)
in the formula, NCV j Means average lower calorific value, FC, of the jth fuel j Is jth fuel consumption; the carbon dioxide emission factor is calculated as follows:
EF j ＝CC j ×OF j ×44/12 (6)
in the formula, CC j Is the carbon content per calorific value, OF, OF the j-th fuel j The carbon oxidation rate of the jth fuel, 44/12 is the ratio of carbon dioxide to carbon molecular weight.
Further, vehicles traveling on the highway network are classified into 6 categories by vehicle type: respectively a mini-type passenger car, a medium-type passenger car, a large-scale passenger car, a mini-type light cargo vehicle, a special operation vehicle, a medium cargo vehicle, a special operation vehicle, a heavy cargo vehicle and a special operation vehicle; the classification into 7 broad categories by fuel type: gasoline, diesel, pure electric, natural gas, hybrid, hydrogen fuel cell, and other types, respectively.
Further, the method for calculating the carbon fixation amount of the existing green plants on the expressway comprises the following steps:
s21, in a plant photosynthetic rate daily change curve, assimilation quantity is the area enclosed by a net photosynthetic rate curve and a time horizontal axis:
in the formula: p is the total assimilation amount of the plant; p a The instantaneous photosynthesis rate of the initial point; p a+1 The instantaneous photosynthesis rate at time a + 1; t is t a Is the instantaneous time (h) of the initial point; t is t a+1 The time of the next measuring point and b is the measuring times;
s22, converting the measured daily assimilation total amount into a daily unit leaf area carbon fixation amount:
in the formula: 44 is CO 2 The molar mass of (a);
s23, calculating the carbon fixation amount of the existing greening area in the expressway:
in the formula: LAI is the plant leaf area index; s d A greening area of the d-th greening type; m is a greening type.
Further, highway greening types are divided into three categories: greening of the central separation zone, roadside greening and greening of the intercommunicating areas; the central separation belt is used for preventing dazzling of light caused by vehicles at night, inducing sight and beautifying roads; the roadside greening comprises a fill slope section, an excavation slope section, road shoulders, a tunnel inlet, a tunnel outlet and a platform; the greening of the intercommunicating area comprises two parts of a ramp and a side slope and is used for stabilizing the roadbed, preventing scouring and keeping water and soil.
Further, the vehicle information includes: entry zone codes, entry road segment numbers, entry station codes, toll time, lane type, license plate number, vehicle type, vehicle speed, kilometer number, total weight, weight limit, overrun rate, upload time.
Further, the vehicle information includes a vehicle model, a vehicle type, an engine model, a rated power, a displacement, a vehicle finishing quality, a driving type, a transmission type, a fuel type, a discharge standard, a displacement, a hundred kilometers of fuel consumption and a hundred kilometers of power consumption.
Furthermore, the greening maintenance information comprises the position of the plant, the plant type, the planting length, the planting mode and the greening area.
Further, the method for analyzing, fusing and processing the existing highway toll and monitoring data comprises the following steps:
1) Data association matching;
2) Rejecting outliers in the data;
3) Deduplication over duplicate values in the data;
4) Complement data missing values.
Further, the calculation of greening area required for discharging of highway vehicles-plant absorption "carbon neutralization" comprises the following steps:
s31, calculating the carbon emission of the non-greened plants on the expressway:
in the formula:
is CO 2 Discharge amount>
The carbon content of the existing greening area in the expressway is fixed.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention relates to the fields of traffic carbon emission, environmental engineering and the like, can be used for energy conservation and emission reduction in the traffic and transportation industry, and provides powerful technical support for carbon neutralization time points in the traffic and transportation industry in advance.
2. The method and the system are fully based on the existing charging and monitoring data, realize carbon neutralization of the expressway only by enlarging the greening area, are favorable for solving the problem of outstanding resource and environment constraint, and promote the high-quality development road with ecological priority and green and low carbon for highway traffic.
Drawings
FIG. 1 is a flow chart of a method for carbon absorption and neutralization by plants in an expressway vehicle emission process;
FIG. 2 is a schematic diagram of the communication segment from Beijing pearl south high speed Beijing to Hao head;
fig. 3 is a schematic diagram of a section from london to elemene intercommunication on a south-two-ring highway.
Detailed Description
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example 1
As shown in figure 1, the invention relates to a highway vehicle emission-plant carbon absorption neutralization method, which comprises the following steps:
s1, calculating the carbon emission of the highway vehicles based on the existing charging and monitoring data, and comprising the following steps of:
the existing toll and monitoring of the highway is the vehicle information collected by the highway in a certain period of time, and the main fields comprise: entry zone code, entry road segment number, entry station code, toll time, lane type, license plate number, vehicle type, vehicle speed, kilometer number, total weight, weight limit, overrun rate, upload time and other fields;
s1.1, collecting greening maintenance information, motor vehicle registration information and automobile energy consumption information.
S1.1.1. The highway greening information is information about green plants collected on a highway section, and the main fields comprise: the plant location, the plant type, the planting length, the planting mode, the greening area and other fields.
S1.1.2, the motor vehicle registration information is vehicle information collected when a vehicle is registered, and the main fields comprise: the name of the person belonging to the vehicle, the ID card number of the vehicle, the issuing authority, the issuing date, the number plate number, the number plate color, the vehicle type, the total mass, the servicing mass, the total number of axles and other fields;
s1.1.3, the automobile energy consumption information is energy consumption data of vehicles of different types, and the main fields comprise: vehicle model, vehicle type, engine model, rated power, displacement, vehicle service quality, drive type, transmission type, fuel type, emission standard, displacement, hundred kilometers of fuel consumption, hundred kilometers of power consumption, and the like.
S1.2. Data analysis, fusion and processing
S1.2.1, data association matching;
s1.2.2, removing abnormal values in the data;
s1.2.3, removing duplication of repeated values in data;
s1.2.4, supplementing the missing data value.
S1.3, calculating the carbon emission of the vehicles on the highway, comprising the following steps:
carbon emission in the highway network mainly refers to carbon dioxide (CO) generated by the combustion activity of vehicle fuel 2 ) And (4) discharging. The method comprises the following steps:
s1.3.1, classifying vehicles running on expressway network
According to the classification standard of the highway model of the transportation department, the vehicle is divided into 6 types (see table 1 in detail), namely a minitype passenger car, a middle passenger car, a large passenger car, a minitype light cargo vehicle, a special operation vehicle, a middle cargo vehicle, a special operation vehicle, a heavy cargo vehicle and a special operation vehicle; j is a fuel type, which is divided into 7 categories, namely gasoline, diesel, pure electric, natural gas, hybrid power, hydrogen fuel cell and other types.
TABLE 1 vehicle type Classification criteria
S1.3.2, calculating average hundred kilometers energy consumption value of each type of vehicle model
Firstly, acquiring a hundred-kilometer energy consumption value of each vehicle in the expressway network, and then calculating an average value of the hundred-kilometer energy consumption of each type of vehicle after classification:
in the formula (I), the compound is shown in the specification,
the energy consumption value of the kth vehicle in the ith vehicle as the fuel j is L/100km or (kw.h)/100 km; and n is the total vehicle number.
S1.3.3. Calculating the consumption of each type of fuel
And multiplying the counted number of the vehicle types of each type by the average driving mileage and the average energy consumption to obtain the fuel consumption of each type of vehicle types.
In the formula, n i,j The number of vehicles of class i as fuel j; d i,j The average mileage of class i vehicle for fuel j; consume i,j Fuel consumption of the i-th vehicle as fuel j.
S1.3.4. Conversion of Fuel consumption to kilogram standard coal
The heat contained in various energy sources is different, and in order to facilitate mutual comparison and research and calculation on the total quantity, various fuel quantity units need to be uniformly converted into kilogram standard coal. China also refers to positioning standard coal containing 7000 calorie (290306 joules) of heat per kilogram as standard coal.
energy＝consume j ×α j (3)
In the formula, alpha j Is the conversion factor for fuel j to kg standard coal. The various energy type conversion criteria are shown in table 2 below:
TABLE 2 conversion table of energy types
S1.3.5. Calculation of carbon emission of vehicle
Vehicle carbon emissions primarily refer to carbon dioxide (CO) produced by the fuel combustion event 2 ) And (4) discharging. CO2 2 Calculating the emission amount and the emission factor:
in the formula, AD j Refers to the activity level of the jth fuel, in GJ; EF j Refers to the CO2 emission factor of the jth fuel, in tCO2/GJ.
AD j ＝NCV j ×FC j (5)
In the formula, NCV j Means average lower heating value, FC, of the jth fuel j Is the jth fuel consumption. The carbon dioxide emission factor of fossil fuels is calculated as follows:
EF j ＝CC j ×OF j ×44/12 (6)
in the formula, CC j Is the carbon content per calorific value, OF, OF the j-th fuel j The carbon oxidation rate of the jth fuel, 44/12 is the ratio of carbon dioxide to carbon molecular weight.
S2, calculating the carbon fixation amount of the plants, comprising the following steps:
s21, the highway greening is divided into three types: central compartment greening, roadside greening and intercommunicating area greening.
The central separation belt greening device mainly has the functions of preventing dazzling of light, guiding sight and beautifying roads caused by vehicles at night. Design and planning usually takes the form of a unified form of low shrubs, plants resistant to exhaust pollution or absorbing exhaust gas should be selected, and tough shrubs that grow slowly and are easy to trim and manage should be preferred. The selected varieties mainly comprise gold leaves, pittosporum tobira, red loropetalum, safflowers, golden containers, rhododendrons, ligustrum quihoui and the like.
Roadside greening as an important component of main line greening comprises a fill slope section, an excavation slope section, road shoulders, a tunnel inlet and outlet, a platform and the like. The main functions of the device are to clearly show the road boundary and induce the sight, the design and planning should form the greening landscape with different characteristics according to different areas, and the selected varieties mainly comprise ficus microcarpa, cinnamomum camphora, chinese red pine, isobaric cotton, autumn maple, prunus salicina, bougainvillea and the like.
The greening of the intercommunicating area comprises two parts of a ramp and a side slope, the main functions of the greening include stabilizing a roadbed, preventing scouring and keeping water and soil, and the design and the planning follow the principle of adjusting to local conditions and are coordinated and unified with the greening of the central separation belt as much as possible. The greening area of the intercommunicated area is wide, the greening plants planted artificially are well-arranged, the arbors, the shrubs, the grasses and the ground covers are complete, and the greening landscape retaining the primary plants fully utilizes the primary plants to perform proper supplement or modification to different degrees. Artificially-planted greening trees mainly comprise plants convenient to maintain, such as ceiba, cercis chinensis, ceiba meissimae, sophora japonica, ficus microcarpa and the like; shrubs are mainly ornamental flowers, such as oleander, safflower, michelia figo, erythrina indica, bougainvillea, and the like; the flower bed plant mainly comprises red-backed cinnamon, golden leaf, yellow banyan and the like.
S22, in a plant photosynthetic rate daily variation curve, the assimilation quantity is the area enclosed by the net photosynthetic rate curve and a time horizontal axis:
in the formula: p is the total assimilation of the plant in mmol (m) 2 ·d)；P a The instantaneous photosynthesis rate [ mu ] mol (m) of the initial point 2 ·s)；P a+1 The instantaneous photosynthesis rate at time a + 1; t is t a Is the instantaneous time (h) of the initial point; t is t a+1 The time at the point a +1 and the number of measurements b.
S23, converting the daily assimilation total amount into the daily unit leaf area carbon fixation amount by measuring:
in the formula: 44 is CO 2 Molar mass of (a).
S24, calculating the carbon fixation amount of the existing greening area in the expressway:
in the formula: LAI is the plant leaf area index; s d Green area of the d-th type of greening, m 2 (ii) a d is a greening type (m = 3), and is respectively a central separation belt greening, a roadside greening and an intercommunication area greening.
S3, calculating the greening area required by 'carbon neutralization' by vehicle emission-plant absorption on the highway, wherein the method comprises the following steps:
s31, calculating the carbon emission of the non-greened plants on the expressway:
s32, calculating the greening area required to be newly increased for realizing the vehicle emission-carbon neutralization absorption of plants on the highway:
in a certain period, because the carbon emission of the vehicle is increased sharply or the photosynthesis of the plants is weak, the carbon fixation of the plants is saturated, or the plants are not subjected to the photosynthesis in the greening process at night, the carbon emission generated by the vehicle is diffused into the air. To this end, the present invention incorporates a peripheral retention factor that is used to calculate the amount of total carbon emissions that can be absorbed by the plant.
In the formula: β is a peripheral retention coefficient.
Example 2
The method selects the Beijing pearl south high-speed Beixing intercommunication to the chelating head intercommunication section crossing the North interchange of the Guangzhou airport for research, the length of the road section is 20 kilometers, the road section is positioned in the Taihe intercommunication to the high post intercommunication section, and the road section where the greening maintenance standard is positioned is in the administrative scope of the Guangzhou city.
S1, calculating the carbon emission of the highway vehicles based on the existing charging and monitoring data;
s1.1, collecting greening maintenance data of the Taihe intercommunication and the Ganggang intercommunication section of the Kyozhuan expressway, wherein the pile number of the section is K2055+800-K2150+400, taihe town of the white cloud district in Guangzhou city, south China, and Taigang town in Qingyuan city, north China to Ganggang town in Fugang county in Qingyuan city, the sections are about 95 kilometers in length, six full-line bidirectional lanes are provided, and the total greening area is about 152 ten thousand square meters. As the greening distribution of the expressway is uniform, the unit greening area of the expressway can be calculated to be 32 ten thousand square meters. The specific link information is shown in fig. 2.
S1.2 data preprocessing steps are as follows:
s1.21, removing abnormal data in highway charging and monitoring information, motor vehicle registration information and automobile energy consumption information;
s1.22, unifying fuel names in motor vehicle registration information, and unifying the fuel with less quantity into other types;
s1.23, performing minor-class completion on fuel consumption and power consumption data which are missing in the automobile energy consumption data through an averaging method based on the automobile type and the fuel type;
s1.24, performing large-class completion on fuel consumption and power consumption data missing in the automobile energy consumption data by an averaging method based on automobile types;
s1.25, motor vehicle registration information contains repeated data caused by part of updated vehicle information, and the latest vehicle information is sequentially screened according to the certification date to repeat the repeated data;
s1.26, standardizing important fields such as highway charging and monitoring data and motor vehicle registration information license plate numbers;
s1.27, associating and matching highway toll and monitoring data with motor vehicle registration information through a license plate number field;
s1.28, according to the vehicle model, for example: BMW325Li and the like, and the automobile energy consumption information is associated and matched;
s1.29, for the missing data of the vehicle model, according to the vehicle type, for example: the average value of similar vehicle types in the vehicle energy consumption information is related and matched;
s1.210, keeping the record number and counting data which cannot be matched;
s1.211, counting the average driving mileage of a vehicle in a single trip;
s1.212, performing secondary classification on the vehicles according to the vehicle specifications, and counting the number of the vehicles of different types and the average driving mileage of a single trip;
s1.213, carrying out equal proportion sample expansion on the number of records which cannot be matched with data due to the loss of the license plate number field according to the number of vehicles of different types;
s1.214, carrying out equal proportion sample expansion according to the number of vehicles with different fuel types due to the missing data of the fuel type field.
S1.3, calculating the carbon emission of the highway section
After classifying according to the vehicle specification in 2021, counting the number of vehicles passing through various vehicle types from north to south, wherein the number of door frames 4C3406 is used as the vehicle statistical data passing through north to south, and the statistical results are shown in the following table 3 and table 4:
TABLE 3 number of door frame 4C3406 various vehicle type
TABLE 4 number of gantry 4D3417 vehicle type
Counting the number of vehicles which are communicated to the chelating head and communicated with different fuel types after being classified according to vehicle specifications in 2021, wherein the counting results are shown in the following table 5 and table 6:
TABLE 5 number of fuel type trains for gantry number 4C3406
TABLE 6 number of fuel type runs for gantry number 4D3417
3. And calculating the average energy consumption and the fuel consumption of various vehicles, and converting the calculated result into kilogram standard coal. And calculates the carbon emissions produced by the Beixing communication to the chelate communication vehicle 2021 year old. The calculation results are shown in Table 7
TABLE 7 results of carbon emissions calculations for Beixing intercommunication to chelating head intercommunication segment vehicles
As can be seen from table 7, the cumulative number of vehicles communicating from north to the head of the truck communicating to the head of the truck in 2021 year is 1790.5 ten thousand, which results in 240184.8 ten thousand tons of carbon emissions.
The annual carbon fixation amount of plants at the section from Beixing intercommunication to Hao cephali intercommunication is calculated, and the result is shown in Table 8
TABLE 8 carbon fixation amount for greening period of Beixing intercommunication to chelating head intercommunication plant
As can be seen from table 8, in 2021, the carbon fixing amount of plants communicating with the chelating head is about 6014.1 tons, and the carbon emission amount of plants not being sequestered by greening plants is about 234171 tons, considering that the carbon emission is diffused into the air. The calculated carbon emission amount of the road section which can be absorbed by plant greening is 70251.3 tons. If the "carbon neutralization" is realized by increasing the greening area, the area needs to be increased by about 11.6 times based on the original greening area. Therefore, in order to promote a high-quality development road with ecological priority and green and low carbon for highway traffic, a large amount of green plants are required to be planted around the highway.
Example 3
The south two-ring highway in Guangzhou city connects the area of the wine in Guangzhou city with the area of the south China sea in Foshan city, the east of the highway has an east-gush and east-gush overpass of the area of the wine in Guangzhou city, the west of the south sea area of Foshan city has a Jiujiang town Jiujiang overpass, the total length of the road is 50 kilometers, the whole line has six bidirectional lanes, the timing speed is 100 kilometers/hour, and the total greening area is about 92 thousand square kilometers. The method selects the intercommunication from London to elemi as a research section, the mileage of the section is about 15 kilometers, and the greening area of the section can be calculated to be about 27.6 ten thousand square kilometers.
S1, calculating the carbon emission of the highway vehicles based on the existing charging and monitoring data;
s1.1, collecting greening maintenance data of a section where two-loop highways of Guangzhou city London are communicated to elemene communication, wherein the section spans south sand areas of Guangzhou city and moral areas of Foshan city, the length of the section is about 15 kilometers, a whole-line bidirectional six-lane is provided, and the total greening area is about 27.6 ten thousand square meters. The specific link information is shown in fig. 3.
S1.2 data preprocessing
S1.3, calculating the carbon emission of the highway section
After classifying according to vehicle specifications in 2021, counting the number of times of vehicles communicated with various vehicle types by London and Terra to each other, wherein the number of door frames is 4C3A04 as the vehicle statistical data passing east to west, the number of door frames is 4D3A06 as the vehicle statistical data passing west to east, and the statistical results are shown in the following table 9 and table 10:
TABLE 9 number of door frame 4C3A04 various vehicle type
TABLE 10 number of door frame 4D3A06 number of vehicle type
After classifying according to the vehicle specification in 2021, counting the number of vehicles communicating different fuel types from Beixing to the chelating head, wherein the counting result is shown in the following tables 11 and 12:
TABLE 11 number of fuel type cars for gantry number 4C3A04
TABLE 12 number of cars for each fuel type of gantry number 4D3A06
3. And calculating the average energy consumption and the fuel consumption of various vehicles, and converting the calculated result into kilogram standard coal. And calculates the carbon emissions produced by london intercommunicating to elemene intercommunicating vehicles in 2021. The calculation results are shown in Table 13
TABLE 13 results of carbon emissions calculations for Beixing intercommunication to chelating head intercommunication segment vehicles
As can be seen from table 13, the cumulative number of vehicles in 2021 year after london intercommunicates with elemi core intercommunicates is 3837.7 ten thousand, which results in 555806.6 ten thousand tons of carbon emissions.
The annual carbon fixation amount of plants at the section from Beixing intercommunication to Hao cephalic intercommunication for greening is calculated, and the result is shown in Table 14
TABLE 14 carbon fixation amount of plants at the section from Beixing to Hao tou intercommunicating
As can be seen from Table 14, the carbon fixing amount of the plant communicated to the chelate head in North Xing of 2021 is about 5274.2 tons, and the carbon emission amount of the plant not sealed by the green plants is about 550532.4 tons, considering that the carbon emission can diffuse into the air. The calculated carbon emission which can be absorbed by plant greening on the road section is 165159.72 tons. The vehicle emission-plant absorption 'carbon neutralization' of the highway can be realized by expanding by about 31.3 times on the basis of the original greening area. Therefore, in order to promote the road with high quality, green and low carbon, which is ecologically preferred by highway traffic, a great amount of green plants are required to be planted around the highway.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. A highway vehicle emission-plant carbon absorption neutralization method is characterized by comprising the following steps:
s1, calculating the carbon emission of the vehicles on the highway based on the existing charging and monitoring data;
s2, calculating the carbon fixation amount of the existing green plants in the expressway;
and S3, calculating the greening area required by carbon neutralization absorbed by plants discharged by vehicles on the highway.
2. The method for carbon absorption by plants and neutralization of emissions from highway vehicles according to claim 1, wherein calculating carbon emissions from highway vehicles based on existing toll and monitoring data comprises the steps of:
s11, classifying vehicles running on the expressway network;
s12, calculating the average hundred kilometer energy consumption value of each type of vehicle type:
firstly, acquiring a hundred-kilometer energy consumption value of each vehicle in the expressway network, and then calculating the average value of the hundred-kilometer energy consumption of each type of vehicle after classification:
in the formula (I), the compound is shown in the specification,
the hundred kilometer energy consumption value of the kth vehicle in the ith vehicle is fuel j, and n is the total vehicle frequency;
s13, calculating the consumption of each type of fuel
Multiplying the counted number of the vehicle types of each type by the average driving mileage and the average energy consumption to obtain the fuel consumption of each type of vehicle types:
in the formula, n i,j The number of vehicles of the ith class as fuel j; d i,j The average mileage of class i vehicle for fuel j; consume i,j Fuel consumption of class i vehicle for fuel j;
s14, converting fuel consumption into kilogram standard coal
energy＝consume j ×α j (3)
In the formula, alpha j Conversion factor for converting fuel j to kilogram standard coal;
s15, calculating the carbon emission of the vehicle
Carbon emissions of vehicles including CO 2 Emission amount and emission factor:
in the formula, AD j Refers to the activity level of the jth fuel; EF j CO of jth fuel 2 An emission factor;
AD j ＝NCV j ×FC j (5)
in the formula, NCV j Means average lower calorific value, FC, of the jth fuel j Is the jth fuel consumption; the carbon dioxide emission factor is calculated as follows:
EF j ＝CC j ×OF j ×44/12 (6)
in the formula, CC j Is carbon content per calorific value, OF, OF the j-th fuel j The carbon oxidation rate for the jth fuel, 44/12 is the ratio of carbon dioxide to carbon molecular weight.
3. The method for carbon absorption and neutralization by plants discharged from vehicles on expressways according to claim 2, wherein the vehicles running on the expressways network are classified into 6 categories according to vehicle types: respectively a mini-type small passenger car, a medium-sized passenger car, a large passenger car, a mini-type light cargo vehicle, a special operation vehicle, a medium cargo vehicle, a special operation vehicle, a heavy cargo vehicle and a special operation vehicle; the classification into 7 broad categories by fuel type: gasoline, diesel, pure electric, natural gas, hybrid, hydrogen fuel cell, and other types, respectively.
4. The method for carbon absorption and neutralization by plants discharged by vehicles on the expressway according to claim 1, wherein the step of calculating the carbon fixation amount of the existing green plants on the expressway comprises the following steps:
s21, in a plant photosynthetic rate daily change curve, assimilation quantity is the area enclosed by a net photosynthetic rate curve and a time horizontal axis:
in the formula: p is the total assimilation amount of the plant; p is a The instantaneous photosynthesis rate of the initial point; p is a+1 The instantaneous photosynthesis rate at time a + 1; t is t a Is the instantaneous time of the initial point; t is t a+1 The time of the next measuring point is b, and the measuring times are b;
s22, converting the measured daily assimilation total amount into a daily unit leaf area carbon fixation amount:
in the formula: 44 is CO 2 The molar mass of (a);
s23, calculating the carbon fixation amount of the existing greening area in the expressway:
in the formula: LAI is the plant leaf area index; s d A greening area of the d-th greening type; m is a greening type.
5. The method for carbon-absorption neutralization by discharging plants from expressway vehicles according to claim 4, wherein the types of expressway greenery are classified into three categories: greening of the central separation zone, roadside greening and greening of the intercommunicating areas; the central separation belt is used for preventing dazzling of light caused by vehicles at night, inducing sight and beautifying roads; the roadside greening comprises a fill slope section, an excavation slope section, road shoulders, a tunnel inlet, a tunnel outlet and a platform; the greening of the intercommunicated area comprises two parts of a ramp and a side slope, and is used for stabilizing the roadbed, preventing scouring and keeping water and soil.
6. The method of claim 1, wherein the vehicle information comprises: entry zone code, entry road segment number, entry station code, toll collection time, lane type, license plate number, vehicle type, vehicle speed, kilometer number, total weight, weight limit, overrun rate, upload time.
7. The method of claim 1, wherein the vehicle information comprises vehicle type, engine type, rated power, emission, vehicle quality, drive type, transmission type, fuel type, emission standard, emission, fuel consumption per hundred kilometers, and power consumption per hundred kilometers.
8. The method as claimed in claim 1, wherein the greening maintenance information includes plant location, plant type, planting length, planting mode and greening area.
9. The highway vehicle emission-plant carbon absorption neutralization method as claimed in claim 1, wherein the existing highway toll and monitoring data is analyzed, fused and processed, and the method comprises the following steps:
1) Data association matching;
2) Rejecting outliers in the data;
3) Deduplication over duplicate values in the data;
4) Complement the data missing value.
10. The carbon-absorbing neutralization method for discharging vehicles on expressways according to any one of claims 1 to 9, wherein the calculation of the greening area required for carbon-absorbing neutralization by discharging vehicles on expressways comprises the following steps:
s31, calculating the carbon emission of the non-sealed and stored greening plants of the expressway:
in the formula:
is CO 2 Discharge amount>
The carbon content of the existing greening area in the expressway is fixed. />
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