87 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 provides a carbon reduction effect evaluation method and system for a healthy agricultural product production process. According to the method, by tracking carbon migration paths of chemical fertilizer application, organic fertilizer degradation and soil respiration and combining matching analysis of chemical reaction chain data and an agricultural carbon emission database, a carbon retention area and methane generation and distribution characteristics in the production process are accurately identified. Modeling is carried out on the concentration of an intermediate product by applying a dynamic compensation engine, a soil pore optimization scheme and an organic fertilizer gradient feeding strategy are generated, and conversion of degradation residues to a stable carbon form is accelerated by regulating and controlling a micro-aerobic environment. Finally, a carbon cycle equilibrium map is constructed, greenhouse gas emission reduction monitoring and effect quantitative evaluation in the whole production period are achieved, and the soil carbon sequestration capacity is synchronously improved. According to the technical scheme provided by the invention, the agricultural production carbon cycle efficiency can be optimized.

The invention discloses a soil carbon sequestration and emission reduction detection method based on soil respiration monitoring, and relates to the technical field of environment monitoring of soil carbon sequestration and emission reduction, and the method comprises the following steps: S1) arranging a limited number of soil respiration sensors in a target area; and S2) constructing a dynamic weight space mapping system: fusing a soil attribute map, a vegetation index sequence and a micro-topography elevation model obtained by remote sensing to generate a spatial heterogeneity weight base map. According to the soil carbon sequestration and emission reduction detection method based on soil respiration monitoring, through a dynamic weight space mapping system, the soil respiration space heterogeneity characterization problem is solved, and a space rule scale is provided for sparse sensor data; and the distortion risk of traditional uniform distribution and mechanical interpolation in a gradient sudden change area is eliminated. And a two-stage cooperative verification mechanism guarantees the evaluation reliability from two dimensions of a spatial mode and physical measurement.

The invention provides a saline-alkali soil multi-source carbon sequestration synergistic wheat yield-increasing and quality-improving fertilization method, and belongs to the technical field of crop cultivation. The fertilizing method comprises the following steps: applying a base fertilizer to wheat, wherein the base fertilizer comprises decomposed livestock and poultry manure and biochar; the base fertilizer contains 4-6t / hm < 2 > of organic carbon, and the organic carbon input ratio of the decomposed livestock and poultry manure to the biochar is (1-3): (1-3). The soil carbon sequestration capacity is improved through the synergistic effect of the multi-source carbon sequestration materials, the wheat yield and the grain zinc content are remarkably improved by combining precise nutrient regulation and control, meanwhile, the content of organic matter in saline-alkali soil is improved, and the method is suitable for wheat cultivation in saline-alkali soil with the pH being 8-9 and the salt content being smaller than or equal to 0.3%.

The invention relates to the technical field of carbon sink calculation, in particular to a crop carbon sink calculation model, a crop carbon credit calculation method and a storage medium. The crop carbon sink calculation model is a multi-task learning model based on a Transform architecture, and the multi-task learning model comprises a synchronous prediction carbon sink quantity module, a soil carbon sequestration potential module and a carbon emission factor module; the training data of the model comprises the carbon content of the crop physiology knowledge machine; the crop carbon sink calculation model is used for estimating the carbon sink amount of the target farmland area, multi-dimensional calculation of the carbon sink amount is achieved, the model generalization ability and the calculation precision are ensured, meanwhile, the manual dependency degree is reduced, and the calculation efficiency is further improved.

The invention provides a biochar soil carbon sequestration stability prediction method and device and a storage medium, and relates to the technical field of biochar soil carbon sequestration stability prediction.The method comprises the steps that a test soil physical and chemical index data set A and a control soil physical and chemical index data set B are obtained; establishing a nonlinear regression model M1 by using A and B; constructing a training sample set; training a preset initial machine learning model by using the training sample set to obtain a target prediction model M2; obtaining the accuracy eta2 of the prediction result of the M2; if eta2 is greater than QR, predicting the soil carbon sequestration stability of the to-be-predicted soil by using M2; determining a first weight alpha 1 corresponding to the M1 and a second weight alpha 2 corresponding to the M2 according to the eta 1 and the eta 2; determining the soil carbon sequestration stability of the to-be-predicted soil; according to the method, the accuracy of predicting the carbon sequestration stability of the biochar soil is improved.

The invention relates to the technical field of soil carbon improvement, and discloses a composite biological stimulant for tropical rainforest soil carbon improvement and a preparation method and application thereof, the composite biological stimulant is obtained by mixing a microbial preparation, an immobilized carrier, porous biochar, an inorganic mineral compound, a slow release fertilizer, a soil conditioner and a plant symbiotic inoculant; the microbial preparation comprises one or more of lactic acid bacteria, nitrifying bacteria, phosphate solubilizing bacteria, nitrogen-fixing bacteria and arbuscular mycorrhizal fungi; the inorganic mineral compound comprises feldspar, apatite and montmorillonite; the slow-release fertilizer comprises biochar, humic acid and phosphate; the soil conditioner comprises biological colloid prepared from seaweed extract and natural plant fiber prepared from straw and palm fiber; the plant symbiotic inoculant comprises rhizobium and / or endophyte. According to the composite biological stimulant, the soil carbon fixing capacity of the tropical rainforest is remarkably improved, the soil void structure is improved, and the plant growth capacity is enhanced.

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 invention relates to the technical field of fertilizer preparation, and discloses a slow-release and controlled-release multifunctional yield-increasing fertilizer based on carbon sink agriculture and a preparation method thereof.The slow-release and controlled-release multifunctional yield-increasing fertilizer comprises a core layer, a middle layer, a shell layer and an outer attachment layer, and the preparation method comprises the steps that a multi-layer coating design is adopted, and a nutrient core layer is formed through melt blending granulation in sequence; a slow-release and carbon-sequestration synergistic intermediate layer is constructed by biochar-humic acid dynamic cross-linked gel, a photoresponse shell layer is formed by electrostatic spraying of nitrogen-doped nano-zinc oxide composite membrane liquid, and finally, the microbial capsule is accurately anchored on the surface in a micro-aerobic environment through an enzymatic grafting process. Through nano adsorption of a core layer, dynamic crosslinking of a middle layer and multi-level collaborative design of a shell light response film, nutrient controlled release and soil carbon sequestration functions are integrated; a multi-response mechanism is constructed based on environmental signal perception, and dynamic matching of the release rate and crop requirements is realized; an enzymatic grafting technology is used for anchoring a microbial inoculum to break through the bottleneck of activity protection, and an ecological closed loop is formed by combining with a full-degradable material.

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 present invention discloses a biofertilizer and its application in combination with microplastics to enhance soil carbon sequestration. The raw materials of the biofertilizer include a microbial agent and an organic carrier; the strain in the microbial agent is selected from at least one of Bacillus velezensis, Bacillus methylotrophicus, and Bacillus licheniformis; and the organic carrier includes a fermentation product of molasses and animal feces. The present invention combines organic biofertilizer with microplastics to provide a method for enhancing soil carbon sequestration. This method is environmentally friendly, sustainable, and highly efficient. The method can effectively increase soil pH, SOC, and OM, thereby generating better overall benefits.

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 discloses a method for evaluating contribution of a timber forest to carbon dioxide reduction, and relates to the technical field of forestry carbon sink, and the method comprises the steps of normalization processing of tree species, calculation of forest and soil carbon sequestration amount, calculation of carbon footprint, soil respiration loss and net carbon contribution, and the like. By defining an ecological end (wood formation and soil carbon deposition) and a circulation end (wood use and overflow substitution) of the timber forest and providing a carbon sink increment algorithm, the contribution of the timber forest to CO2 reduction in the atmosphere can be evaluated quickly and accurately at low cost.

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.

This application proposes a method and system for constructing a soil carbon sink assessment model, which belongs to the field of model construction. The method includes: using land use type, stratified soil type, topography, climate and meteorology, and NDVI vegetation index as constraints, collecting samples and performing statistics to obtain confidence intervals for stratified soil bulk density, gravel volume fraction, and soil carbon content; performing confidence sorting on soil sample data based on the obtained confidence intervals to obtain high-confidence detection values; using the screened detection values ​​to perform carbon density statistics to obtain stratified carbon density and total carbon storage; using stratified carbon density and total carbon storage as supervision and high-confidence detection values ​​as input to train a soil carbon sink assessment model. By constructing confidence intervals through big data and verifying the credibility of sample data, the method effectively solves the problem of low precision of soil carbon sink assessment using traditional methods and improves the accuracy of soil carbon sink assessment.

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.

The invention provides an immobilized microbial agent with carbon sequestration and decontamination capabilities as well as a preparation method and application thereof, and belongs to the technical field of microorganisms. The immobilized microbial agent is prepared by taking bacillus glutamicum, bacillus, haematococcus, carbon sequestration ammoxidation archaea and carbon sequestration bacterium acetobacter xylinum as raw materials and taking charcoal as a carrier, and has efficient degradation capacity on dimethyl phthalate, diethyl phthalate, dibutyl phthalate, butyl benzyl phthalate and the like; and the soil carbon sequestration capability can be enhanced.

The present application provides a kind of microbial iron reduction coupling biomass carbon soil carbon sequestration-organic pollution control collaborative remediation method, the present application method is by selecting including nitrogen-fixing bacteria, phosphorus solubilizing bacteria and iron-reducing bacteria Compound bacterial species, mixed with biomass carbon to form microorganism-biomass carbon compound, apply to soil, regulate soil environmental conditions, to promote iron cycle and the carbon sequestration effect of biomass carbon.The specific steps include: selecting nitrogen-fixing bacteria consisting of Clostridium pasteurianum and soybean rhizobium, phosphorus solubilizing bacteria consisting of Bacillus subtilis, flavobacterium or Streptomyces, and iron-reducing bacteria consisting of Geobacter;Prepare biomass carbon;Mix compound bacterial species with biomass carbon;Application and adjust soil pH, moisture content and aeration.The method is suitable for various soils, especially soils susceptible to MCPA pollution, can effectively improve the soil carbon sequestration capacity and reduce environmental pollution.