51 results about "Carbon fixation" patented technology

The invention discloses a land comprehensive improvement quality evaluation method and system based on big data, relates to the technical field of land resource management, and solves the problem of lack of effective quantification means for more critical ecosystem function indexes. The invention discloses a land comprehensive improvement quality evaluation method and system based on big data. The method comprises the steps that a remote sensing image module and an optical image module are used for collecting image data of soil surface vegetation; uploading the acquired image data to a cloud platform through a data network, and establishing a soil surface vegetation optical evaluation index database; the carbon dioxide monitoring module and the oxygen monitoring module are used for monitoring the carbon dioxide concentration and oxygen near the vegetation on the soil surface in real time. According to the method, a soil surface vegetation carbon sequestration evaluation index database is established to calculate vegetation net primary productivity, biomass and carbon utilization efficiency, the vegetation net primary productivity, biomass and carbon utilization efficiency are summarized through a software program, and an ecological quality comprehensive index of soil surface vegetation is given.

A method of estimating amount of carbon fixation in a plant comprises receiving a set of temporal sequences, respectively corresponding to a set of consecutive days, each sequence describing a size of a part of the plant as measured repeatedly over one of the days. Morphologically equivalent pairs of sequences are identified in the set of sequences, and parameter subtraction is applied between parameters representing sequences in each pair of at least a portion of the pairs, to provide a size change of the plant part for the pair. The method estimates the amount of carbon fixation in the plant based on the size change.

The invention relates to the technical field of microbial carbon sequestration, and discloses bacillus megaterium, a carbon sequestration microbial agent as well as a preparation method and application of the carbon sequestration microbial agent. The preservation number of the bacillus megaterium provided by the invention is CGMCC (China General Microbiological Culture Collection Center) No.35586. The bacillus megaterium provided by the invention is a new strain of bacillus megaterium separated from a water sample in an oil field. The bacillus megaterium can effectively immobilize carbon dioxide in the atmosphere and generate gases such as nitrogen under a high-temperature condition through a unique metabolic pathway, so that the synergistic effect of carbon sequestration and gas production is realized, and the energy recovery rate and environmental benefits of the whole biological process are improved.

This invention discloses a system for combined carbon sequestration and soil improvement using biogas slurry and biochar, relating to the fields of soil improvement and carbon fixation technology. The system includes: calculating the pore mineralization throat ring index by measuring the short-range elution release equivalent, total load equivalent, and connectivity ratio of the composite particles; adjusting the total load equivalent based on this index to obtain the true effective exchange load of the composite particles; and finally calculating the application rate per unit area based on the unit area requirement equivalent of the target plot, using this to guide field application. This invention achieves adaptive quantitative fertilization, effectively ensuring the stability of carbon sequestration and soil improvement effects under complex conditions.

The present application relates to the technical field of ecological environment and carbon emission management, and discloses a method, device and equipment for evaluating carbon sink potential of ecological restoration in an open-pit mine area, which comprises the following steps: obtaining basic data of the mine area, and constructing a multi-dimensional remote sensing data cube, an environmental factor database and a species distribution sample database based on the basic data of the mine area; generating a closed pit spatiotemporal distribution database based on the multi-dimensional remote sensing data cube; modeling the habitat suitability probability of species based on the environmental factor database, the species distribution sample database and the closed pit spatiotemporal distribution database, and generating an ecological restoration suitability spatial zoning database; generating a carbon sink potential spatiotemporal distribution map based on the closed pit spatiotemporal distribution database and the ecological restoration suitability spatial zoning database, and evaluating the carbon sink potential of the mine area based on the carbon sink potential spatiotemporal distribution map; the present application can finely depict the spatiotemporal evolution law of the restoration of the mine area, dynamically quantify the carbon fixation potential of different restoration measures and species types, and obtain a scientific carbon sink evaluation method.

The invention discloses an air purification device and method for generating negative oxygen ions based on microalgae photosynthesis, and belongs to the technical field of microalgae biologication.The air purification device comprises an incubator, a protective cover, a culture light source, a negative oxygen ion generator and a fan, and a plurality of ventilation holes are formed in the protective cover. The air purification method is based on a natural purification mechanism of microalgae photosynthesis, and the problem that pollutants cannot be synchronously reduced and active ingredients cannot be synchronously improved in the traditional technology is creatively solved; according to the system, the physiological characteristics of carbon sequestration and oxygen release of microalgae are utilized, COs are efficiently removed, negative oxygen ions are naturally excited, the passive mode of purification without gain in the traditional technology is thoroughly subverted, the cycle can be restarted infinitely only by supplementing micronutrient salt through self-balancing metabolism of the algae and closed-loop regeneration of the culture solution, and the method is simple and convenient to operate. Therefore, office buildings, residences and even underground spaces can continuously obtain forest-level'air vitamin 'supply, and a self-maintenance healthy air ecological system with zero material consumption, zero ozone and zero site limitation is constructed.

To provide a carbon fixation device and a carbon fixation method that absorb and fixe carbon dioxide by using photosynthetic organisms supported on a fibrous carrier that is swingably installed in water.SOLUTION: A fibrous carrier 18 that is swingably installed in water and supports photosynthetic organisms comprises: a holding plate 9 that extends horizontally from a vertically extending connecting plate 2A and hangs down the plurality of fibrous carriers 18; a rectangular cylinder 3 that connects the vertically extending connecting plates 2A to 2D and surrounds the suspended fibrous carriers 18; a partition plate 5 that is placed at a predetermined distance from the connecting plate 2C opposite the connecting plate 2A and divides the inside of the rectangular cylinder 3; a floating body 4 that is connected to the rectangular cylinder 3 and can float on the water surface; a solar power generation system 13 placed on the floating body 4; and an aeration section 10 provided below a circulation path 19 formed between the partition plate 5 and the connecting plate 2C, thereby allowing the photosynthetic organisms supported on the fibrous carrier 18 to efficiently absorb and fix carbon dioxide.SELECTED DRAWING: Figure 1

The application discloses a kind of desert concentrated salt water solar salt local climate improvement system, belong to ecological engineering and the cross technical field of climate improvement.System includes the large-area solar salt evaporation pond group arranged in inland desert area, the wind tunnel acceleration evaporation distribution arranged along prevailing wind direction, and the ecological gain area of downwind direction.The present application utilizes the super-high evaporation capacity of inland desert area, and the large amount of water vapor generated during the solar salt process is transported to the downwind desert area through the wind tunnel acceleration distribution, continuously increases the local atmospheric water content and air relative humidity, triggers local rainfall increment, so that the annual precipitation of downwind area exceeds the survival threshold of desert vegetation, and promotes the natural recovery of native vegetation.At the same time, large-area evaporation water surface absorbs solar radiation heat, combined with vegetation carbon fixation, forms a significant carbon sink effect.

The present application relates to the technical field of culture medium, and discloses a light response type composite culture medium and application thereof in plant cultivation.A carbon fixation microorganism, a nitrogen fixation microorganism and a TiO2 / CdS heterojunction nanomaterial are used to form microspheres, a light nanomaterial and microorganism synergistic carbon fixation and nitrogen fixation system is constructed, and the system is mixed with a buffer solution composed of dipotassium hydrogen phosphate and potassium dihydrogen phosphate to obtain a light response type composite culture medium.The composite culture medium can improve the carbon and nitrogen cycle efficiency through processes such as photocatalysis, hydrogen storage and carbon and nitrogen fixation, and further significantly improve the plant growth cycle and yield.Experiments show that in a closed environment, the composite culture medium provided by the present application can shorten the growth cycle of lettuce to 20 days, and the fresh weight is increased to 60g after 20 days of growth.

The invention provides a karst rocky desertification side slope ecological restoration method which comprises the following steps: selecting a rocky desertification side slope region, generating a spherical region range based on geographic coordinates, and recording center coordinates of a target side slope; the method comprises the following steps: acquiring vegetation coverage, height and type distribution data based on remote sensing data and field sampling, and acquiring wind speed, wind direction, soil element distribution, precipitation, runoff, vegetation seed bank quantity, seed bank soil humidity, seed particle size distribution and type distribution data at the same time; generating a wind power field function according to the wind speed and wind direction data, analyzing the soil element content, calculating the total rainwater amount and the total runoff amount, and generating the number of effective vegetation seeds; integrating the parameters to construct a carbon sequestration and slow release model, and outputting a carbon cycle model. According to the method, the carbon sequestration capability of the karst rocky desertification slope ecosystem can be accurately evaluated, the dynamic monitoring and optimization of the ecological restoration effect are realized, and the ecological restoration efficiency and the regional ecological stability are improved.

The application relates to a kind of soil carbon fixation and emission reduction field determination method and device, method includes to the organic carbon detection of sampling hole, microorganism activity detection, bulk density detection and temperature and humidity detection, and the concentration change of carbon dioxide and methane in sampling hole is monitored, to determine carbon dioxide and methane emission flux;Then the emission flux is corrected once using the microorganism activity detection result;According to the total amount of soil carbon storage of organic carbon detection result, bulk density detection and temperature and humidity detection, the emission flux of primary correction is corrected twice using the total amount of soil carbon storage, finally, based on the emission flux of secondary correction, determine carbon fixation amount, and determine emission reduction potential index in combination with emission amount.The present application can not only improve detection efficiency and precision, but also simple structure, easy to operate.

The invention discloses an intelligent accounting and prediction method and system for carbon sequestration and emission reduction of biochar based on multi-factor coupling, and the method comprises the steps: S1, carrying out the calculation of the carbon sequestration and emission reduction of biochar under the conditions of the same environment parameter matrix, the same period and the same detection frequency; respectively collecting reference data of blank soil samples without biochar and detection data of multiple groups of mixed soil samples with different biochar addition proportions, and collecting corresponding biochar background data; s2, calculating an environmental parameter coupling correction coefficient and a soil physical and chemical parameter correction coefficient, calculating the carbon sequestration emission reduction amount of a single group of mixed soil samples in combination with charcoal background data, and performing statistical verification on multiple groups of samples; s3, constructing a time sequence-multiple regression coupling prediction model based on the accounting carbon sequestration emission reduction and the environmental parameter matrix, and predicting future carbon sequestration emission reduction; according to the invention, dynamic accounting and long-term trend prediction of carbon sequestration emission reduction based on multi-source real-time detection data are realized.

The application discloses a kind of based on carbon source-sink and biological process's preferential protection area demarcation method, comprising: obtaining the multi-source remote sensing data of research area, generates the ecological resistance surface of research area;Based on circuit theory extraction ecological corridor and ecological node, construct the static ecological network of source-corridor-node structure;For the spatio-temporal heterogeneity characteristics of ecological source, the supply and demand of carbon fixation service of ecological source are calculated;Carbon fixation service as important ecological resources, according to the characteristics of biological migration from low resource habitat to high resource habitat, compare the supply and demand ratio of carbon fixation service between ecological source, to determine the trend of ecological corridor, calculate the flow radius of ecological source carbon sink supply area, according to flow radius determine the biological flow relationship between ecological source, divide ecological source into carbon source protection area and carbon sink protection area.

The invention relates to an intertidal zone benthic microalgae multispectral self-adaptive carbon sequestration rate in-situ monitoring system and method, the system comprises a reactor used for containing intertidal zone sediments, the top of the reactor is covered with a cover plate, and the cover plate is provided with an LED lamp; a through hole is formed in the side wall of the reactor, an electrode penetrates through the through hole, and the other end of the electrode is electrically connected with a monitor; a micro-motor system is further arranged on the side wall of the reactor, and the micro-motor system is electrically connected with the LED lamp so as to control on and off of the LED lamp; a water changing opening is further formed in the side wall of the reactor, and the water changing opening is electrically connected with the micro-motor system so as to control opening and closing of the water changing opening; the scheme provided by the invention has the advantages that the method is not influenced by the environment, and the carbon sequestration rate of the benthic microalgae can be measured at high precision in any adverse environment.

The application discloses a high-efficiency carbon fixation microalgae breeding device, and relates to the technical field of carbon fixation microalgae breeding.The device comprises an elongated pool, a partition plate is arranged at the middle position of the elongated pool, so that a loop-shaped channel in the shape of a long strip is formed in the elongated pool, bottom plates are arranged in the two parallel straight channels of the loop-shaped channel, the upper surfaces of the bottom plates are arranged in an inclined manner, and the inclined directions of the two bottom plates are opposite.Two liquid lifting mechanisms are arranged at the high end positions of the two bottom plates respectively, and are used for lifting the algal liquid in the loop-shaped channel to the high end of the bottom plate, so that the algal liquid flows downward along the upper surface of the bottom plate automatically.Two groups of disturbance mechanisms are arranged on the upper surfaces of the two bottom plates.The algal liquid is driven to form a turbulent state by the bidirectional inclined bottom plates, the liquid lifting mechanism and the disturbance mechanism, the problems of surface light inhibition and bottom dark area are reduced, and the light energy utilization efficiency of the microalgae is improved significantly.

Methods and agricultural formulations for the cultivation of plants such as broad acre crops, fruits and vegetables, perennial tree crops, and ornamentals are described. The methods include contacting the plant with a furanone compound according to Formula I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII, XIII, or XIV as described herein, or a salt or solvate thereof. The methods can provide cultivated plants exhibiting reduced levels of non-photochemical quenching (NPQ), higher levels of carbon fixation, higher levels of carbon storage, increased quantum efficiency, and / or increased stomatal conductance, leading to increased biomass and / or increased crop yields. Furanone compounds and agricultural formulations containing the compounds are also described.

The application discloses a screening method of a biochar modifier suitable for waste ionic rare earth tailing area soil emission reduction and carbon fixation, which comprises the following steps: (1) selecting different biochars, and determining physical and chemical properties of the biochars; (2) performing soil culture test, adding the different biochars into soil by adopting indoor constant-temperature and constant-humidity culture alkali absorption method, and performing soil respiration test determination; (3) calculating soil organic carbon mineralization properties of each group in different culture time sections; and (4) when the soil organic carbon mineralization rate is stable, analyzing the correlation between the soil organic carbon cumulative mineralization amount and the physical and chemical properties of the biochar. The application improves the soil emission reduction and carbon fixation capacity of the waste ionic rare earth tailing area, and also obtains an optimal reference range of the physical and chemical properties of the biochar, thereby providing a theoretical basis for screening the biochar with weak soil organic carbon mineralization in the waste ionic rare earth tailing area. Moreover, the biochar also has a certain effect on the improvement of soil fertility.

The invention discloses a method for preparing a graphene material by taking CO2 as a carbon source, which comprises the following steps: 1) separating, purifying and carbonizing a cultivated diatom colony to obtain a carbon-based precursor; loading the carbon-based precursor in a transition metal matrix to obtain a transition metal loaded carbon-based precursor; and (2) by taking the transition metal loaded carbon-based precursor as a cathode and cooperating with a conductive anode, inserting the cathode and the anode into a CO2 adsorbent, carrying out electrochemical reaction under the actions of CO2 atmosphere, high temperature and electric field to obtain a graphene crude product, and washing, carrying out suction filtration and drying to obtain the graphene material. According to the method, eutrophicated algae and captured CO2 are taken as raw materials, and an electrochemical process based on high temperature and electric field conditions is combined, so that the synergistic advantages of biological carbon sequestration and electrochemical conversion are fully exerted, the utilization efficiency of CO2 is remarkably improved, and formation of a graphene product with rich morphology and relatively large specific surface area is promoted; the related raw materials are low in cost, the process is simple, and a green material synthesis path with low energy consumption and high atom economy is constructed.

The invention relates to the technical field of medical carbon neutralization, in particular to a deduction and calculation method for medical voluntary carbon neutralization. The method comprises the following steps that key information is obtained, and the total carbon emission of a patient is calculated in combination with carbon emission factors in historical data. According to the method, the local climate mean value is obtained to calculate the climate correction factor, the carbon fixation amount of a single plant is corrected in combination with the carbon dioxide equivalent corresponding to fixed carbon in a specific year, then the required planting number of each tree species is calculated, whether the tree species are the optimal tree species is judged according to the required planting number of the tree species and the survival rate of each tree species, and the required planting number is accurately calculated. The planting tree species and number are reasonably selected and distributed, resource waste caused by blind planting is avoided, the resource utilization rate is improved, meanwhile, in the medical voluntary carbon neutralization process, the optimal tree species are accurately screened out, fluctuation of the carbon sequestration amount caused by frequent death of the tree species with the low survival rate is avoided, and the stable carbon sequestration effect is achieved; and the stability of the carbon sequestration effect is improved.

The application discloses a forward osmosis reduction concentration coupled microalgae carbon fixation complementary fusion system and method, and relates to the field of water treatment and carbon fixation. The system comprises a forward osmosis device and a microalgae carbon fixation device. The forward osmosis device comprises a forward osmosis membrane assembly and a feed liquid side and a driving liquid side separated by the forward osmosis membrane assembly. The microalgae carbon fixation device comprises a microalgae photobioreactor. Salt-resistant microalgae are used in the microalgae photobioreactor, and a magnesium chloride solution or a sodium chloride solution is used as microalgae growth liquid. Saline industrial wastewater enters the feed liquid side and, under the action of osmotic pressure, enters the driving liquid side through the forward osmosis membrane assembly to obtain water production. The growth liquid with increased concentration after the growth of microalgae in the microalgae photobioreactor enters the driving liquid side as driving liquid, and the water production dilutes the driving liquid and then returns to be used as microalgae growth liquid again. The application realizes energy saving, water saving and carbon fixation of microalgae while completing raw water treatment process, improves the utilization rate of wastewater resources, and further improves the CO2 absorption rate during microalgae carbon fixation.

This invention discloses a method for accurately measuring tracheid wall thickness in *Pinus sylvestris* based on micro-CT images, a method for selecting high carbon-fixing varieties of *Pinus sylvestris*, and a system, belonging to the field of forest tree genetics and breeding technology. Addressing the systematic underestimation of tracheid wall thickness due to partial volume effect in micro-CT measurements, this invention employs the gray-scale centroid method to calculate the sub-pixel position of the wall-cavity boundary, reducing the measurement error from ±1.5 μm to ±0.3 μm. Based on accurate wall thickness data, screening criteria are established: "average wall thickness ≥ 75th percentile of the population, coefficient of variation ≤ 15%, and proportion of thick-walled tracheids ≥ 60%". Combined with carbon storage index verification, this enables precise selection of high carbon-fixing varieties. This method is non-destructive, efficient, and reproducible, and is applicable to the genetic improvement of *Pinus sylvestris* and similar coniferous trees.

The invention discloses a photo-thermal catalytic reduction denitration coupling carbon sequestration process which comprises the following steps: S1, introducing flue gas into a desulfurization and dehydration chamber, and removing SO2 and moisture in the flue gas; s2, the flue gas treated in the step S1 and ammonia gas are introduced into a photo-thermal denitration chamber at the same time, and under the catalytic action of a denitration catalyst, nitrogen oxide in the flue gas is reduced by the ammonia gas to generate nitrogen; s3, introducing the flue gas treated in the step S2 into a carbon sequestration chamber, and adsorbing and immobilizing CO2 in the flue gas under the action of a CO2 absorbent; and S4, discharging the flue gas treated in the step S3. According to the photo-thermal catalytic reduction denitration coupling carbon sequestration process disclosed by the embodiment of the invention, the photo-thermal denitration chamber is used for converting light energy into heat energy, and heating equipment does not need to be additionally used for heating flue gas, so that the energy consumption is reduced; and moreover, the treated flue gas is discharged after being introduced into the carbon sequestration chamber, so that the emission of greenhouse gas is reduced.

The present application relates to the technical field of wetland ecological restoration, and particularly relates to a nitrogen reduction, carbon fixation and emission reduction method for coastal wetlands based on iron cycle. The present application mixes biochar raw materials with water, and then performs hydrothermal reaction to obtain biochar precursors; the biochar precursors are immersed in a tannic acid modification solution to perform modification to obtain modified biochar precursors; and the modified biochar precursors are pyrolyzed under the condition of ferrocene vapor and inert atmosphere to obtain modified biochar. The present application uses green algae and cordgrass to prepare biochar, and realizes nitrogen reduction, carbon fixation and emission reduction of coastal wetlands based on iron cycle. After adding the modified biochar, the total nitrogen and greenhouse gas emission of the soil in the coastal wetland are reduced compared with those of the control group, and the total carbon content is increased.

The invention discloses a microalgae carbon sequestration system and a microalgae carbon sequestration method thereof, and belongs to the technical field of microalgae carbon sequestration. The system comprises purified ribulose-1, 5-diphosphate carboxylation oxidase (Rubisco), purified ribulose-1, 5-diphosphate carboxylation oxidase (Rubisco), purified ribulose-1, 5-diphosphate carboxylation oxidase (Rubisco), purified ribulose-1, 5-diphosphate carboxylation oxidase (Rubisco) The invention discloses a chitosan-silicon dioxide hybrid gel microsphere for immobilizing ribulose-1, 5-diphosphate carboxylation oxidase, the particle size of the chitosan-silicon dioxide hybrid gel microsphere is 150-250 microns, the porosity is 40-60%, the pore diameter is 5-20 nm, and carbonic anhydrase is optionally contained in the chitosan-silicon dioxide hybrid gel microsphere; the living microalgae cells are suspended in the culture solution, and the living microalgae cells can freely enter and exit from the peripheral area of the chitosan-silicon dioxide hybrid gel microspheres and cannot penetrate through pore channels of the chitosan-silicon dioxide hybrid gel microspheres; and the photobioreactor is used for accommodating a culture solution and providing illumination for the living microalgae cells. According to the invention, the increase of microalgae biomass can be realized, and the efficiency of fixing CO2 by microalgae cells is improved.

The invention provides a microalgae carbon sequestration efficiency improving device with built-in optical fiber bundle-quantum dot light guide, and belongs to the field of biological carbon sequestration. A traditional external light source irradiates a microalgae photobioreactor through a spatial light path, and the problems that light cannot penetrate into algae liquid, and the wavelength is limited by the light source exist. According to the invention, the optical fiber bundle protected by the transparent light guide tube is placed in the microalgae photoreactor for light guide, so that the illumination depth is prolonged, and the illumination area is increased. In addition, a quantum dot solution can be introduced into the light guide tube, and light with a proper wavelength is introduced through the optical fiber to irradiate the quantum dot solution to pump and emit light. The quantum dot has the characteristics of wide absorption spectrum and narrow emission spectrum, can capture ultraviolet-blue-violet light which is difficult to utilize by microalgae chlorophyll, and emits light with new wavelength through fluorescence resonance energy transfer to irradiate microalgae. The built-in optical fiber bundle-quantum dot solution is introduced to guide light and emit light, so that the illumination depth of algae liquid can be prolonged, the illumination area can be increased, the microalgae carbon sequestration efficiency and the biomass yield can be improved, the wavelength can be regulated and controlled based on the fluorescence resonance energy transfer characteristic of quantum dots, the illumination requirements of different types of microalgae can be accurately matched, and the application prospect is wide. And the device adaptation range is expanded.

The invention discloses an air pressure measurement-based carbon sequestration amount indirect measurement method, which is implemented on a closed wet-process carbon sequestration system equipped with an inlet gas flowmeter and a reaction kettle pressure gauge, and CO2 with the total input amount of Nin in the system can be divided into three parts, namely carbon sequestration amount NI, water soluble amount NII and free amount NIII according to the distribution position and the occurrence state. Nin and NIII are directly measured through an inlet gas flowmeter and a reaction kettle pressure gauge. Meanwhile, the method comprises a first round of pressure measurement, that is, a corresponding relation of NII in an effective stable pressure Pd range under the liquid-gas two-phase condition is calibrated and established in advance. And then carrying out a second round of pressure measurement in a solid-liquid-gas three-phase carbon sequestration process, and obtaining NI according to a formula NI = Nin-NII-NIII by combining the pre-measured NII with the directly measured Nin and NIII. According to the method, sampling is not needed, errors caused by non-uniform materials and non-representative sampling are avoided, the carbon sequestration amount is deduced by directly measuring the pressure, the overall carbon sequestration level of the materials can be reflected, and the analysis accuracy of the carbon sequestration amount is remarkably improved.

The invention relates to the technical field of ecological environment and carbon emission management, and discloses a strip mine area ecological restoration carbon sink potential assessment method, device and equipment, and the method comprises the steps: obtaining mine area basic data, and constructing a multi-dimensional remote sensing data cube, an environmental factor database and a species distribution sample database based on the mine area basic data; generating a closed pit space-time distribution database based on the multi-dimensional remote sensing data cube; performing species inhabitation suitability probability modeling based on the environmental factor database, the species distribution sample database and the closed pit spatial and temporal distribution database, and generating an ecological restoration suitability spatial partition database; based on the closed pit space-time distribution database and the ecological restoration suitability space partition database, a carbon sink potential space-time distribution diagram is generated, and the mining area carbon sink potential is evaluated based on the carbon sink potential space-time distribution diagram. And a scientific carbon sink estimation method is obtained.

The invention relates to the technical field of wetland ecological restoration, in particular to a coastal wetland nitrogen reduction, carbon sequestration and emission reduction method based on iron circulation. The preparation method comprises the following steps: mixing a biochar raw material with water, and carrying out hydrothermal reaction to obtain a biochar precursor; immersing the biochar precursor into the tannic acid modification solution, and modifying to obtain a modified biochar precursor; under the condition of ferrocene steam and inert atmosphere, pyrolyzing the modified biomass precursor to obtain the modified biochar. According to the method, the biochar is prepared from enteromorpha and spartina alterniflora, nitrogen reduction, carbon sequestration and emission reduction of the coastal wetland are achieved on the basis of iron circulation, compared with control group soil, the total nitrogen and greenhouse gas emission of coastal wetland soil added with the modified biochar is reduced, and the total carbon content is increased.

The invention provides a forest carbon sequestration amount evaluation method based on climate index influence. The method comprises the following steps: determining a complete growth cycle of a forest; calculating the forest carbon sequestration amount after biological correction; calculating to obtain a winter temperature anomaly index WTAIi, a summer temperature anomaly index STAIi, a growth season monthly rainfall anomaly index GSPAI-Si, a growth season double-month rainfall anomaly index GSPAI-Bi and an annual sunshine anomaly index YSAIi of the research area in the year Ti; and constructing a forest carbon sequestration quantity-climate index model. From the perspective of coping with climatic changes and guaranteeing the forest carbon sequestration amount, a'forest carbon sequestration amount-climatic index 'model capable of quantifying the influence of climatic abnormity on the forest carbon sequestration amount is constructed by designing the climatic index capable of representing the abnormal degree of climatic conditions, and objective and efficient evaluation of the influence of the forest carbon sequestration amount is developed.

The application discloses a kind of karst peak cluster depression's plant community recovery method, including target site selection, select the peak cluster depression in karst region as target site;Slope position grading, according to the target site selected, according to the distance between peak and depression, the target site is divided into multiple slope positions;Plant configuration, according to the characteristics of different slope positions, select suitable high carbon fixation plant species for configuration;Planting, according to the plant species selected according to different slope positions, according to the plant planting habit is planted;Nursing management, the plant after planting is managed, and the management content includes topdressing, disease and insect pest control.The present application is based on the principles of restoration ecology, pedology, under the background of "double carbon", aiming at the harsh habitat of FAST Ningjing area karst peak cluster depression and the site conditions of different spatial parts, screening high carbon fixation native plants, and reasonably configuring and supplementing in different slope positions, so as to improve the carbon fixation capacity of FAST Ningjing area karst peak cluster depression.