54 results about "Soil carbon sequestration" patented technology

The invention provides a method for regulating and controlling fertilization based on a soil carbon sequestration rate and a land manure nutrient demand quantity, and relates to the technical field of agricultural fertilization methods. According to soil background carbon and a target nitrogen demand quantity, initial manure is calculated and applied according to a preset carbon-nitrogen ratio to start microbial activity; soil biophysical signals are monitored in real time and compared with the efficient carbon sequestration signals, when the matching degree is lower than a first threshold value, it is judged that a window period is entered, and if the matching degree is further lower than a second threshold value in the window period, second manure is immediately and dynamically calculated and dressed on the basis of the descending duration and the average value of the matching degree; when the matching degree is recovered or naturally increased to be higher than a third threshold value through a preset interval after topdressing, the window period is ended; based on the sum of all the topdressing amounts in the current period, the base fertilizer amount in the next period is corrected, and finally before the critical period of nitrogen demand, the third final fertilizer is accurately calculated and supplemented by measuring soil available nitrogen and deducting the expected nitrogen supply contribution of early-stage topdressing, so that sufficient nitrogen supply in the yield forming period is ensured.

The invention discloses a construction method for forming a modified aggregate based on wood vinegar and charcoal mixing, and belongs to the technical field of carbon sequestration and agricultural soil carbon sequestration. The method mainly comprises the following steps: mixing biochar, organic acid and mineral powder in proportion, adding water, granulating by using a stirrer to form an initial aggregate, stabilizing the initial aggregate through an aging maintenance process, and finally applying the obtained high-stability aggregate to a soil layer. The core of the method is that large-particle, porous and stable aggregates are artificially prefabricated, so that the physical and chemical stability of the biochar in the soil is greatly enhanced, and the decomposition and migration of the biochar are effectively inhibited. According to the method, long-term and efficient storage of atmospheric carbon dioxide is achieved, the granular structure and fertility of the sandy loam soil can be remarkably improved, and the method has the double benefits of soil carbon sequestration and water and fertilizer retention improvement.

The application discloses a method for monitoring carbon sink in non-carbonate rock area by using carbonate rock powder, and relates to the technical field of carbon sink monitoring. The method for monitoring carbon sink in non-carbonate rock area by using carbonate rock powder realizes real-time monitoring and storage of carbon sink data in non-carbonate rock area, and ensures the continuity and integrity of the data. Based on multivariate regression analysis, the soil and vegetation carbon sink characteristics of the non-carbonate rock area are evaluated, the soil carbon sink index and the vegetation carbon sink index are obtained, and the overall carbon sink index is evaluated. By using the carbon sink index data, a probability distribution model is fitted, the critical value of the natural fluctuation range of the carbon sink index is identified, and the threshold range of the carbon sink index is determined. The linear relationship between the mesh number of the carbonate rock powder and the soil carbon sequestration rate is analyzed by using a linear regression model, and a carbon sink linear regression model is constructed. When the carbon sink index is lower than the threshold range, the application amount and frequency of the carbonate rock powder are dynamically adjusted according to the carbon sink linear regression model, and the carbon sink management is optimized.

The invention relates to the technical field of straw degrading microbial inoculants, in particular to a bacterium-algae composite microbial inoculant capable of efficiently degrading straw and reducing emission and sequestering carbon as well as a preparation method and application of the bacterium-algae composite microbial inoculant, and the bacterium-algae composite microbial inoculant is prepared by mixing blue-green algae and Cellulomonas illani according to a mass ratio of 1: (3-9), preferably 1: 7. The preparation method comprises the following steps: respectively culturing blue-green algae and strains to specific optical densities, centrifugally collecting algae and thalli, mixing according to a ratio, complementing the mass with humic acid, and drying and powdering to obtain the microbial inoculum. When the complex microbial inoculant is applied according to 10 g / m < 2 > after straw returning to the field, the straw degradation efficiency can be remarkably improved, meanwhile, through the carbon sequestration effect of blue-green algae, emission of CO2 and CH4 is reduced, straw carbon is promoted to be converted into soil organic carbon, the soil carbon sequestration function is enhanced, the crop growth performance is improved, the synergistic interaction of straw degradation, carbon emission reduction and soil recarburization is achieved, and the crop yield is improved. The method is suitable for agricultural waste recycling and green low-carbon agricultural development.

The invention discloses a biomass power plant ash composition for improving soil carbon sink as well as a preparation method and application of the biomass power plant ash composition, and belongs to the technical field of agricultural resources and environment. The composition is formed by compounding fly ash and slag according to the dry basis mass ratio of (2-3): 1, and the heavy metal content of the composition meets the agricultural safety standard. The preparation method comprises the steps of raw material pretreatment and optimized compounding. The core of the method is that the fly ash is used as a main carbon source by increasing the proportion of the fly ash, physical protection is provided by utilizing the microporous structure of the slag, and the fly ash and the slag jointly act on the soil, so that the organic carbon library of the soil is rapidly and stably increased. Experiments show that the composition provided by the invention can significantly improve the organic carbon content and the carbon library management index (CPI) of soil, effectively reduce the daily average mineralization rate of organic carbon, and realize efficient and high value-added resource utilization of biomass ash in the field of soil carbon sequestration.

The invention relates to the technical field of soil conditioners and applications thereof, and discloses a soil carbon sequestration-pollution reduction-yield increase multi-effect synergistic microbial inoculum and an application thereof in ploughing ability improvement, the soil carbon sequestration-pollution reduction-yield increase multi-effect synergistic microbial inoculum comprises an organic pollutant degradation functional flora, a soil carbon sequestration functional flora and a small molecular organic matter production functional flora; the organic pollutant degrading functional flora comprises efficient pollutant degrading bacteria; the soil carbon sequestration functional flora comprises ammonia oxidizing bacteria, ammonia oxidizing archaea, complete ammonia oxidizing bacteria, sulfate reducing bacteria, iron reducing bacteria, rhizobium and photosynthetic flora; the micromolecular organic matter production functional flora comprises heterotrophic nitrification-aerobic denitrification bacteria, zoogloea, phosphorus-accumulating bacteria and photosynthetic bacteria. According to the scheme, multiple florae are specifically arranged in the synergistic agent, and through the synergistic interaction effect of the florae, the effects of the synergistic agent in multiple fields of soil carbon sequestration, pollution reduction and yield increase are effectively improved.

The application discloses a kind of microbial fertilizer and its in improving white pulp soil carbon sequestration capacity and application in promoting straw decomposition, belong to the technical field of microbial fertilizer.The microbial fertilizer includes organic matter, biochar, microbial inoculant, trace element and microbial activator;The microbial inoculant includes bacillus ND2 and bacillus megaterium CICC 22681;The microbial activator includes fulvic acid, gamma-polyglutamic acid and sorbitol.The microbial fertilizer of the application has the dual function of white pulp soil improvement and straw decomposition, can accelerate straw decomposition, improve white pulp soil structure, improve soil fertility and carbon sequestration capacity, help agricultural waste resourceization and soil quality improvement collaborative development, in white pulp soil area or other barren soil area in future agricultural production, it is expected to become important technical support for promoting sustainable development of ecological agriculture, and application prospect is wide.

The invention discloses a knowledge-guided and process-driven forest soil layered carbon sink simulation system, which comprises the following steps of: screening a continuous and complete soil profile according to forest soil organic carbon layered observation data; optimizing process model parameters of the terrestrial ecosystem at each measuring point by adopting a Bayesian data assimilation technology; processing the current vegetation terrain soil attribute data to obtain multi-modal standardized data as an input variable of a random forest model, performing heterogeneity learning and scale expansion on optimization parameters by using the random forest model, and simulating the organic carbon reserve of the current layered soil based on steady-state hypothesis and external driving data of a lattice point scale; and based on an instantaneous hypothesis, generating a future forest soil layered carbon sink simulation result by taking scale extension parameters and future external driving data as driving and combining current layered soil organic carbon reserves, so as to realize accurate, digital and intelligent monitoring and evaluation of the forest soil carbon sink capacity.

The invention relates to the technical field of agricultural resources and environment, and discloses a preparation method and application of an in-situ activator for carbon sequestration, pollution reduction and yield increase of soil. The activator comprises the following raw materials in parts by mass: 5-15 parts of a modified mineral carrier, 10-15 parts of an organic slow-release matrix, 6-13 parts of a lactic acid bacteria crude extract, 5-15 parts of a fungus crude extract, 5-12 parts of a yeast crude extract, 10-20 parts of a microbial fermentation humus crude extract, 4-8 parts of a complexing agent, 5-10 parts of a protective agent, 3-8 parts of root-promoting signal molecules and 1-3 parts of quorum sensing molecules. According to the scheme, five units including a supporting framework, an active component, a complexing agent, a protective agent and a trace substance are jointly assembled to serve as a core of the activator, the activator is supported by a porous carrier, a compound enzyme-humus system and an oxygen-iron-sulfur electron shuttle system are colonized on the surface, nutrient substance aggregates are slowly released, and signal molecule induction is combined, so that the activity of the activator is improved. And soil carbon reservoir expansion, pollutant passivation and crop root development promotion are realized. According to the preparation, the soil carbon sequestration efficiency can be improved by 25% or above, the heavy metal activity can be reduced by 40-65%, and the average yield of crops can be increased by 15-20%.

The invention relates to the field of ecological restoration, and discloses a soil carbon sequestration restoration method aiming at plateau peat land freeze-thaw characteristics, which comprises the following steps: S1, on-site data acquisition and raw material preparation: acquiring data of a plateau peat land construction site through an acquisition tool, and preparing a restoration matrix material at the same time; s2, threat level weight distribution and comprehensive restoration base value coefficient establishment: based on the data collected in the step S1, dividing and distributing physical stress data and chemical stress data weights, and establishing a comprehensive restoration base value coefficient according to the distributed physical stress data and chemical stress data weight values; and S3, dynamically adjusting a formula and performing precise adaptive construction: performing formula adjustment and adaptive construction on the repair base value material prepared in the step S1 through the comprehensive repair base value coefficient obtained in the step S2. According to the method, through field data acquisition and stress index construction, the repair prescription can be accurately matched with the specific stress type of the field, and accurate construction is realized.

This invention discloses a production method for preparing artificial land using various types of stones, a complete technology for preparing artificial soil through on-site crushing and application to the comprehensive transformation of national land. This invention employs on-site mobile processing, avoiding transportation costs. A single unit can produce soil for 1500 mu (approximately 100 hectares) annually, with a standard farmland cost of only 2658 yuan per mu, and the cost of remediating polluted farmland not exceeding 10,000 yuan per mu. The produced soil has a thickness of 33.3 cm, does not compact, and has extremely high water retention; even after 10 days at high temperatures, the moisture content of the lower layer still reaches 70%. Heavy metal content in the soil and agricultural products is far below national standards, mercury was not detected, and it is safe to grow all grains and vegetables. This invention can be applied on a large scale to the remediation of polluted farmland and the enhancement of carbon sequestration in industrial areas. It can rapidly increase soil carbon sequestration, lower temperatures, and transform ineffective rocky land into high-yield farmland, completely solving global problems such as the extremely slow formation, rapid loss, non-renewability, arable land shortage, and global warming of natural soils. One-time transformation benefits millennia, possessing extremely high economic, ecological, and social value.

The invention relates to the technical field of biochar materials, in particular to a soil carbon sequestration synergistic organic pollutant degradation method based on an iron-modified oxygen-carrying biochar material. According to the preparation method of the iron-modified oxygen-carrying biochar, iron modification and nano oxygen loading modification are combined, micropores of the prepared iron-modified oxygen-carrying biochar are obviously increased, the opening degree of the pores is increased, and the specific surface area and the number of surface active sites of the material are remarkably increased; the modified biochar material has very excellent performance in the aspects of promoting fixation of organic carbon in soil and adsorbing and degrading antibiotics, and has a relatively good application prospect in soil carbon fixation and emission reduction and pollutant degradation.

The invention provides a method for regulating and controlling fertilization based on soil carbon sequestration rate and grassland manure nutrient demand, and relates to the technical field of agricultural regulation and control fertilization, the method comprises the following steps: carrying out grid division on a target field, collecting soil related data, determining the organic carbon content through a carbon dioxide flux method, and calculating the net carbon sequestration rate of each grid unit; based on the photosynthetic production principle and the leaf area index, in combination with the biomass loss rate and the growth stage, a nutrient concentration dynamic model is established, the nutrient absorption amount of each grid is accurately evaluated, a nutrient demand net function is established through the existing nutrient and manure release amount of soil, and the comprehensive nutrient demand index is further calculated. Differentiated fertilization of field grid units is realized by adopting a clustering algorithm. By integrating soil carbon flux monitoring, a vegetation growth model and a clustering analysis technology, fine identification and dynamic regulation and control of grassland nutrient requirements are realized, and the fertilization precision and the soil carbon sequestration efficiency are improved.

This invention discloses a method and application for soil improvement and carbon sequestration enhancement in castor bean cultivation in saline-alkali land, relating to the field of agricultural planting technology. The method includes: planting castor beans in saline-alkali land using an agroforestry model; and spraying exogenous hormones during the seedling, budding, and flowering stages of the castor beans. The exogenous hormones are indoleacetic acid (IAA) or gibberellin, with the IAA and gibberellin spraying concentrations ranging from 50 μM to 200 μM. This method can lower the soil pH in coastal saline-alkali land, improve soil physicochemical properties, and increase soil organic carbon and organic matter content. Simultaneously, it can effectively enhance soil carbon storage, castor bean plant carbon sequestration, and total carbon accumulation. The method has low operating costs, stable improvement effects, and balances the needs of land use and ecological carbon sequestration improvement in saline-alkali land, providing a theoretical basis and technical support for enhancing soil carbon sequestration in coastal saline-alkali land.

The invention belongs to the technical field of constructed wetlands, and provides a method for improving carbon sink of a constructed wetland, and the method comprises a coupling mechanism of seasonal water level regulation and control, deep pool and shoal habitat differentiation, directional mowing removal and mowing object conversion and back application wetland formation. According to the method, an ecological cascade coupling mechanism is formed by adopting multiple factors such as seasonal water level regulation and control, deep pool and shoal habitat differentiation and directional mowing removal, and the machine is used for constructed wetlands, so that the plant carbon sequestration capacity, the soil carbon sequestration capacity and the water carbon sequestration capacity can be enhanced, and meanwhile, carbon release of plants and a soil layer at the last growth stage is reduced; and the plants at the last growth stage are converted into soil organic carbon from a carbon source in a manner of converting and applying the mow to the wetland, so that the constructed wetland is improved from a traditional water quality purification body to a carbon sink body.

The invention relates to the technical field of bio-organic fertilizers, in particular to a functional bio-organic fertilizer based on kitchen garbage anaerobic fermentation biogas residues as well as a preparation method and application of the functional bio-organic fertilizer. The functional bio-organic fertilizer based on the kitchen waste anaerobic fermentation biogas residues comprises the following components in parts by mass: 40-60 parts of kitchen waste anaerobic fermentation biogas residues, 15-30 parts of an organic carbon source conditioner, 10-20 parts of biogas residue biochar, 5-15 parts of humic acid, 2-5 parts of bentonite, 2-8 parts of a compound microbial agent, 1-5 parts of nutrient-loaded zeolite and 1-5 parts of polyglutamic acid. The bio-organic fertilizer prepared by the invention can effectively reduce the dependence of agricultural chemical fertilizers, reduce carbon emission in the chemical fertilizer application process, increase the carbon sequestration amount of soil and reduce the emission of greenhouse gases such as N2O in the field, and has a remarkable carbon sequestration effect and a remarkable greenhouse gas emission reduction effect.

The invention discloses a Qinghai-Tibet Plateau soil carbon sequestration monitoring method based on a capacitance sensor array, and belongs to the field of soil carbon sequestration monitoring, and the method comprises the steps: deploying a sensor array to collect capacitance signals, and eliminating noise and adapting to the characteristics of a frozen soil alternating region in combination with a time domain filtering and adaptive adjustment technology; identifying moisture and mineral interference types by using a support vector machine, and performing signal correction by fusing multi-point data through Kalman filtering; extracting a carbon quantity change feature vector based on the correction signal, and integrating time sequence information to dynamically capture a change trend; adjusting and judging the fluctuation trend of the carbon reserves through the parameters of the mapping model, and finally generating a carbon sequestration monitoring report and a carbon reserve change index which are fused with the deviation correction result. According to the invention, the problems of serious signal interference and insufficient measurement precision in a complex environment are effectively solved, and the accuracy and reliability of soil carbon sequestration monitoring are remarkably improved.

The invention belongs to the field of thermal power generation, and relates to a method and system for generating power by using biomass fuel, and the method comprises the following steps: carrying out preliminary anaerobic pyrolysis on biomass at 200-300 DEG C to obtain a biomass baking material; continuously pyrolyzing a part of the biomass baking material at 500-600 DEG C to prepare charcoal and biomass pyrolysis gas with high calorific value; directly putting the other part of the biomass baking material into a biomass boiler for combustion; introducing the prepared biomass pyrolysis gas into a boiler hearth and carrying out co-combustion power generation with biomass; the prepared biochar is subjected to soil carbon sequestration to realize carbon sequestration. The energy density of the biomass fuel is improved, the combustion condition of direct combustion of biomass is improved, and alkali metal corrosion is reduced.

This disclosure relates generally to determining a change in soil organic carbon quantity in a geographical area, and determining a total carbon footprint of an agricultural area. A processor calibrates an in-silico model configured to simulate soil carbon sequestration within the geographical area using measurements received from one or more sensors placed at: a first location having environmental conditions similar to the geographical area; and / or a second location associated with the geographical area, the measurements being indicative of: (a) a level of carbon flux; and optionally (b) one or more environmental conditions; of the geographical area. The processor provides input data, and determines the change in soil organic carbon quantity based on an output of the in-silico model. The processor determines the total carbon footprint based on the change in soil organic carbon quantity and a livestock carbon footprint determined by applying a carbon accounting model to livestock data.

The invention relates to the technical field of microbial stress resistance evaluation, in particular to a soil strain carbon sequestration and salt tolerance evaluation method and application thereof. Comprising the following steps: (1) separating a salt-tolerant strain, and measuring the optimal salt growth concentration; (2) determining a carbon sequestration salt-tolerant capability index of the strain to obtain observation data; (3) carrying out standardization processing on the data, constructing an evaluation index minimum data set and determining the weight of each index; and (4) converting the measured value of each index into a membership function value by adopting a range method, and calculating a carbon sequestration and salt tolerance index of the soil strain to obtain a carbon sequestration and salt tolerance grade of the strain. Based on the response characteristics of the soil carbon sequestration and salt inhibition capacities and the crop salt-tolerant capacity under the optimal growth concentration of the salt-tolerant strain, the carbon sequestration and salt-tolerant capacity grade of the soil strain is comprehensively evaluated by adopting a multi-path analysis method, and theoretical and technical support can be provided for development of salt-tolerant microbial agent products in different areas.

The invention discloses an urban green land soil improvement method based on green land carbon sink enhancement, and relates to the technical field of soil improvement, and the method comprises the following steps: carrying out soil quality diagnosis on soil of a target green land, preparing a functional soil matrix according to a diagnosis result, and carrying out soil replacement in a plant root zone; the method comprises the following steps: selecting plants with deep root systems and an efficient carbon sequestration function, constructing a three-dimensional community combining arbors, shrubs and herbaceous plants, and planting in a structured mode; aggregate forming bacteria, efficient carbon conversion bacteria and rhizosphere symbiotic growth-promoting bacteria are prepared into a compound microbial agent, and the compound microbial agent is inoculated to a root zone in a step-by-step targeted mode when plants are planted and after the plants are planted; a mineral stabilizer rich in multivalent metal ions is added into the soil, and an organic covering composed of different functional layers is laid on the surface layer; soil key indexes are monitored regularly, and a soil carbon sink system is maintained and managed. According to the invention, the improvement from single carbon sequestration to systematic ecological function improvement in soil improvement is realized.

This invention relates to the fields of ecological science and soil carbon sequestration technology, specifically to a method for promoting soil carbon sequestration using calcium ions and biochar. The method comprises the following steps: pre-culturing soil under sealed, light-protected conditions for 6-10 days; adding biochar and a calcium source to the pre-cultured soil; mixing thoroughly; and then formally culturing under the same conditions as the pre-culture for 50-70 days. This invention introduces calcium ions into biochar. Calcium ions, through cation bridging and inorganic cementation, significantly promote the formation of large soil aggregates and substantially increase the saturated adsorption capacity and affinity of biochar for dissolved organic carbon, thereby effectively reducing the risk of mineralization loss of organic carbon in the soil. This method is simple to operate and low in cost, providing effective technical support for overcoming the bottleneck of soil carbon sequestration using biochar and improving the application benefits of biochar.

The invention relates to the technical field of soil improvement, in particular to a carbon sequestration and sink increase method of enzymolysis residue biochar in soil in a mine ecological restoration area, an enzymolysis residue soil conditioner comprises the following components in parts by weight: 30-40 parts of enzymolysis residue biochar, 40-50 parts of bentonite or kaolin, 5-10 parts of humic acid, 5-10 parts of ground phosphate rock and 0.1-0.3 part of a functional microbial agent; the invention further discloses a soil carbon sequestration and sink increasing method which comprises the following steps: deeply plowing waste land soil, keeping 60-80% of the water-holding capacity of the soil, uniformly spreading the soil on the surface of the soil according to 10t-30t / hm < 2 > after standing, sufficiently mixing the enzymolysis residue soil conditioner with the soil through secondary plowing, and subsequently planting barren-resistant and stolon-developed extreme environment adaptive herbaceous plants. According to the method, high-stability biochar is prepared from enzymolysis residues and compounded to form a multifunctional enzymolysis residue soil conditioner for precise application, and the technical problems that organic carbon of a traditional mining area repairing material is prone to mineralization, the carbon sequestration effect is poor, the improvement function is single, and the risk of secondary pollution exists are solved.

The invention discloses an in-situ culture device and method for analyzing the ecological effect of a root system and mycorrhiza, the in-situ culture device comprises a first culture device, a second culture device and a third culture device, and the three culture devices are mesh bags made of nylon or polyester high polymer materials with acid and alkali resistance and ultraviolet ray resistance; the mesh bag is filled with carbon source soil subjected to standardized treatment; the three groups of mesh bags are simultaneously arranged in the field in situ; and the apertures of the three groups of mesh bags are respectively 1 mu m, 38 mu m and 1000 mu m. According to the device, separation and comparative analysis of different underground carbon input paths are realized through multi-aperture design, so that the relative contribution of a root system and mycorrhiza in the soil carbon immobilization and nutrient circulation process is quantitatively analyzed. The device is simple in structure, high in repeatability, small in disturbance to an ecological system and suitable for long-term in-situ microorganism-plant interaction research in forest, grassland and farmland ecological systems.

The invention belongs to the technical field of soil amendments, and particularly relates to a soil carbon immobilization amendment based on agricultural waste compost humification and a preparation method and application of the soil carbon immobilization amendment. The preparation method comprises the following steps: mixing the rotten vegetable leaves with straw powder for aerobic composting, and mixing the obtained fermentation product with glutamine for humification to obtain a decomposed material; mixing the decomposed material, modified charcoal and polyglutamic acid to obtain a mixed base material; the modified biochar is obtained by pyrolyzing rotten vegetable leaves in an inert atmosphere, activating with phosphoric acid and then performing secondary pyrolysis; and mixing the mixed base material and the compound functional bacterial liquid, and carrying out micro-aerobic directional after-ripening to obtain the soil carbon immobilization improver. According to the invention, glutamine is added to enhance the synthesis of humic acid, the modified charcoal has a mesoporous structure and can physically isolate microbial extracellular enzyme, so that the biodegradation half-life period of the loaded humic acid is prolonged, carboxyl of polyglutamic acid and phenolic hydroxyl of humic acid form a hydrogen bond network, the stability of an aggregate can be enhanced, and efficient and lasting carbon sequestration is realized.

The application discloses a preparation method of litter-based biochar and a soil carbon fixation method. The preparation method of the litter-based biochar comprises the following steps: (1) collecting litter as coarse material, and crushing the coarse material to obtain fine material; (2) drying the fine material, and then forming the fine material into particles; and (3) pyrolyzing the particles after the particle forming, so as to obtain the litter-based biochar. The litter and other waste biomasses with small bulk density are first formed into particles and then pyrolyzed, so that the yield, stability and the carbon fixation and emission reduction potential in soil of the biochar are significantly increased. Through technical means, the carbon fixation rate of the litter for producing the biochar and the stability of the litter-based biochar are enhanced, and then the carbon fixation and emission reduction potential of the litter-based biochar in soil is improved. The particle biochar produced by the application has better yield, carbon content, carbon stability and soil carbon fixation and emission reduction potential compared with the biochar without particle forming.

The invention discloses a soil carbon sequestration and recarburization optimization method based on artificial intelligence, and relates to the technical field of soil carbon sequestration and recarburization. The method comprises the following steps: acquiring a soil internal data set and a remote sensing image data set of soil in a target area; constructing a time prediction model based on an LSTM network, inputting a soil internal data set, and outputting a future soil carbon content change rate; constructing a spatial distribution prediction model, inputting a remote sensing data set, and outputting soil carbon density spatial distribution; combining the change rate with the spatial distribution by using a weighted fusion algorithm to calculate a soil carbon reserve prediction value, and further obtaining the soil carbon sequestration capability; determining a microbial respiration rate, calculating carbon content natural loss in combination with soil oxygen content, and then obtaining soil carbon sink potential in combination with carbon sequestration capacity; and grading the target area according to the carbon sink potential, and implementing carbon sequestration and recarburization measures for areas with different potential grades. By integrating multi-source data, soil carbon content coupling analysis is realized, and the pertinence of carbon sequestration and recarburization measures is optimized.

The application discloses a kind of soil carbon sequestration and carbon increase optimization method based on artificial intelligence, and the application relates to soil carbon sequestration and carbon increase technical field.The steps of the method include: obtaining the soil internal data set and remote sensing image data set of the target area soil;Based on LSTM network, a time prediction model is constructed, the soil internal data set is input, and the future soil carbon content change rate is output;A spatial distribution prediction model is constructed, the remote sensing data set is input, and the soil carbon density spatial distribution is output;The change rate and spatial distribution are combined using a weighted fusion algorithm to calculate the predicted value of soil carbon storage, and then the soil carbon sequestration capacity is obtained;Determine the microbial respiration rate, calculate the carbon content natural loss combined with the soil oxygen content, and then obtain the soil carbon sink potential combined with the carbon sequestration capacity;According to the carbon sink potential, the target area is classified, and carbon sequestration and carbon increase measures are implemented for different potential level areas.The application integrates multiple data sources to realize soil carbon content coupling analysis, and then optimizes the pertinence of carbon sequestration and carbon increase measures.

The invention discloses an irrigation and fertilization optimization method and system for corn and soybean intercropping, and relates to the technical field of corn and soybean irrigation and fertilization. Coverage crops are scientifically introduced through an environment-crop interaction coefficient algorithm, and the ecological function of the coverage crops as service crops is fully exerted; a time sequence feature fusion module combined with an attention mechanism and a self-adaptive multi-task learning model are adopted, the space-time interaction rule between corn, soybeans and covering crops can be deeply excavated, accurate prediction of water and fertilizer requirements and synchronous evaluation of soil carbon reserves are achieved, the high yield of the crops is guaranteed, and the soil carbon sequestration capacity is remarkably improved; the water and fertilizer package and the scheduling plan for dynamic risk adjustment are generated, and the intelligent irrigation equipment is directly linked, so that full-chain closed-loop intelligent management is realized, the utilization efficiency of water and fertilizer resources is greatly improved, and climate and ecological risks in the production process are effectively reduced.