CN-122022117-A - Scattered green land carbon sink measuring and calculating device and method based on box-type respiration method

CN122022117ACN 122022117 ACN122022117 ACN 122022117ACN-122022117-A

Abstract

The invention belongs to the technical field of carbon sink monitoring, and particularly discloses a scattered green land carbon sink measuring and calculating device and method based on a box-type respiration method, wherein the method comprises the steps of dividing areas by adopting a gridding point distribution method, and randomly selecting a sampling party covering different vegetation types and interference factors; the dynamic acquisition detection stage comprises the steps of setting time frequency parameters of dynamic acquisition, acquiring gas in a region according to the set time frequency parameters, simultaneously monitoring basic environment quality, vegetation coverage and artificial interference intensity in real time, simultaneously monitoring the running state of a sensor in real time, starting buzzing alarm by a data terminal if abnormal data transmission occurs, automatically recording abnormal time and abnormal types, and the data correction calculation and output stage comprises the steps of calling and storing a corresponding correction model based on the micro-environment factor data types, calculating carbon flux and carbon sink according to a box method, and outputting data according to two modes of real-time display and storage and derivation.

Inventors

YANG WEI
WANG YITING
YE ZHEN
CHEN DONGXU
WANG DEYONG
MA ZHENJIANG
YU ZHAO
Bai Menxin
LI SHU
SUN YINAN

Assignees

中电科联海创智信息科技有限公司

Dates

Publication Date: 20260512
Application Date: 20251219

Claims (7)

1. The scattered green land carbon sink measuring and calculating method based on the box-type respiration method is characterized by comprising a sample plot investigation stage, a dynamic acquisition monitoring stage and a data correction calculation and output stage, and comprises the following specific contents: Dividing the area by adopting a gridding point distribution method, and randomly selecting a sampling party covering different vegetation types and interference factors; Setting a time-frequency parameter for dynamic acquisition, acquiring gas in an area according to the set time-frequency parameter, simultaneously monitoring the quality of a basic environment, vegetation coverage and artificial interference intensity in real time, simultaneously monitoring the running state of a sensor in real time, starting a buzzing alarm by a data terminal if data transmission is abnormal, and automatically recording the abnormal time and the abnormal type; And a data correction calculation and output stage, namely calling and storing a corresponding correction model based on the micro-environment factor data type, calculating the carbon flux and the carbon sink according to a box method, and outputting the data according to two modes of real-time display and storage and derivation.
2. The method for measuring and calculating scattered green carbon sink based on box-type respiration method as claimed in claim 1, wherein the specific steps of the sample plot investigation stage are as follows: s1, dividing areas according to 10m x 10m grids by adopting a grid point distribution method and according to scattered green land distribution characteristics, and randomly selecting 1 x 1 sample sides covering different vegetation types and artificial interference areas in each grid; s2, comprehensively flattening broken stone sundries with the surface diameter of more than 2cm, irregular plots and areas with height differences; And S3, marking an acquisition point, installing an acquisition device and waiting for detection.
3. The method for measuring and calculating scattered green carbon sink based on the box-type respiration method according to claim 1, wherein in the dynamic acquisition and detection stage, three acquisition time periods are set, namely 6:00-8:00 in the morning, 12:00-14:00 in the afternoon and 18:00-20:00 in the evening, the acquisition frequency of a growing season is set to be 1 time a day, the acquisition frequency of a non-growing season is set to be 1 time a day, and extreme weather stops acquisition.
4. The method for measuring and calculating scattered green carbon sink based on the box-type respiration method according to claim 3, wherein in the dynamic acquisition and detection stage, the specific acquisition steps of the gas in the sample are as follows: s1, starting a dynamic acquisition module, and sealing the box body after mixing the gas inside and outside the box; S2, extracting gas in the tank once every 10min by the circulating pump, automatically analyzing the gas concentration after the gas sensor receives the collected gas, and automatically uploading the collection time, the gas concentration and the sample side number to the control terminal; S3, synchronously performing step S2, detecting passing persons and vehicles by using an infrared sensor, recording the passing times in 1h, grading according to the standards of 0 times = low interference, 1-3 times = medium interference and 3 times = high interference, acquiring a sample side vegetation image by using an image acquisition instrument, uploading the vegetation image to a system, automatically analyzing the duty ratio, outputting vegetation coverage, monitoring temperature and humidity data in real time by using the sensor, and obtaining multi-source micro-environment factor data; and S4, storing the gas concentration data and the micro-environment factor data in a control terminal, and naming the sample side number, the acquisition time and the parameter type.
5. The method for calculating scattered green carbon sink based on box-type respiration method according to claim 1, wherein the data correction calculation and output stage is implemented as follows: S1, after the system receives each data, automatically judging the effectiveness of the data, if no abnormal record for more than 10 times is generated in the process of monitoring the artificial interference intensity for 1h, vegetation coverage data is in the range of 0-100%, and the basic environment quality does not greatly jump, judging that the verification is passed, otherwise, returning to a dynamic acquisition stage for re-acquisition; S2, correcting the data by using different correction models: the formula for correcting the artificial interference is as follows: wherein In order to compensate for the post-disturbance concentration, In order to be the original concentration, Low interference as interference coefficient =0.05, Medium interference =0.1, High interference =0.15, Low interference for interference classification value =1, Medium interference =2, High interference =3; The vegetation coverage correction is: wherein For the corrected concentration of the coverage, For the coverage factor, 0.02, Is vegetation coverage; s3, according to the corrected data, according to a formula The carbon flux was calculated, wherein, For the carbon flux to be high, In order to collect the volume of the box, In order to correct the concentration change rate of the CO 2 , the system automatically checks the calculation result, if the carbon flux is between-50 and 50 mg/(m 2 . H), the verification is passed, otherwise, the measurement is returned to the step b to readjust the correction coefficient; S4, according to the carbon flux value, according to a formula The carbon sink amount is calculated, wherein, In order to obtain the carbon sequestration quantity, In order to calculate the period of time, Taking the average value of all the sample side data as the sample area to obtain the carbon sink quantity of scattered greenhouses.
6. Scattered green land carbon sink measuring and calculating device based on box respiration method, a serial communication port, including base (1), collection case (2), gas analysis appearance (3), base (1) can dismantle with collection case (2) and be connected, collection case (2) are equipped with temperature and humidity sensor (4), temperature and humidity sensor (4) all with gas analysis appearance (3) signal connection, the intercommunication has exhaust tube (5) and intake pipe (6) on collection case (2), the head of exhaust tube (5) is connected with aspiration pump (7), exhaust tube (5) and intake pipe (6) all communicate with gas analysis appearance (3).
7. The scattered green carbon collecting device based on the box-type respiration method according to claim 6, wherein a silica gel sealing ring (8) is arranged at the bottom of the collecting box (2).

Description

Scattered green land carbon sink measuring and calculating device and method based on box-type respiration method Technical Field The invention relates to the technical field of carbon sink monitoring, in particular to a scattered green land carbon sink measuring and calculating device and method based on a box-type respiration method. Background Along with the signing of international climate agreements, ecological compensation and carbon trade market formation are promoted by quantifying carbon fixing capability of forests, grasslands, wetlands and other ecological systems. The method system is built gradually on the basis of a national greenhouse gas inventory guide of an inter-government climate change specialized committee (IPCC) and various ecology carbon circulation models, and integrates space analysis technologies such as remote sensing, a geographic information system and the like, so that a comprehensive methodology covering macroscopic region assessment and microscopic sample area monitoring is formed. At present, the mainstream carbon sink measuring and calculating technology mainly comprises three types, namely a biomass checking method based on ground field investigation, a model inversion method based on remote sensing data, a regional carbon sink estimation method based on remote sensing means such as multispectral and laser radar, and the like, and a vorticity correlation method in the micro-aeropictology field, wherein the carbon sink is calculated by directly monitoring carbon dioxide flux between the atmosphere and the ground surface to reflect carbon exchange of an ecosystem scale. In addition, some emerging technologies are attempting to integrate multisource data with machine learning algorithms to improve the spatio-temporal accuracy of the measurement. However, there are significant limitations to the prior art of measuring and calculating. Firstly, the field investigation method represented by the biomass investigation method has high cost, limited coverage, high dependence on an empirical equation and larger uncertainty of an extrapolation result in a complex environment. Secondly, the remote sensing inversion method is easily influenced by weather, sensor performance and physical change, and has weak capability of measuring and calculating underground carbon reserves such as a soil carbon reservoir. Again, the vorticity correlation method can directly measure, but the equipment is expensive, the deployment conditions are harsh, the data processing is complex, and the large-scale application is difficult. In general, the existing method is difficult to balance among precision, efficiency and cost, the technical system is not unified, and the authority of carbon sink metering results and the marketization process of carbon sink assets are restricted. Disclosure of Invention The invention aims to provide a scattered green land carbon sink measuring and calculating device and method based on a box-type respiration method, which are used for solving the problems that the efficiency and the cost in the prior art are contradictory, the carbon sink measuring and calculating requirement of a large-scale scattered green land cannot be adapted, and the application scene is limited. In order to achieve the aim, the basic scheme provided by the invention is that the scattered green land carbon sink measuring and calculating method based on the box-type respiration method comprises a sample plot investigation stage, a dynamic acquisition monitoring stage and a data correction calculation and output stage, and the specific contents are as follows: Dividing the area by adopting a gridding point distribution method, and randomly selecting a sampling party covering different vegetation types and interference factors; Setting a time-frequency parameter for dynamic acquisition, acquiring gas in an area according to the set time-frequency parameter, simultaneously monitoring the quality of a basic environment, vegetation coverage and artificial interference intensity in real time, simultaneously monitoring the running state of a sensor in real time, starting a buzzing alarm by a data terminal if data transmission is abnormal, and automatically recording the abnormal time and the abnormal type; And a data correction calculation and output stage, namely calling and storing a corresponding correction model based on the micro-environment factor data type, calculating the carbon flux and the carbon sink according to a box method, and outputting the data according to two modes of real-time display and storage and derivation. The invention has the working principle that based on a box type respiration method, firstly, typical sample sides covering different vegetation and interference factors are selected through gridding distribution points, then, the gas in a box is dynamically collected according to set frequency, environment parameters, vegetation coverage, artificial interference and equipment operati