Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

99 results about "Future climate" patented technology

Future Climate. Future global climate is influenced by both internal and external factors. Internal forces include naturally occurring oscillations of the weather through to seasonal changes such as El Nino-Southern Oscillation (ENSO) or decadal changes such as the Pacific Decadal Oscillation (PDO).

Multi-scene land gradient utilization carbon emission prediction method, coupling model, system and storage medium

The invention relates to the technical field of land utilization change evaluation, in particular to a multi-scene land gradient utilization carbon emission prediction method and system and a readable storage medium. A multi-scenario land gradient utilization carbon emission prediction coupling model under three scenarios of historical development trend, future climate change and policy planning effect is considered to comprehensively evaluate the influence of land gradient utilization change on carbon emission under different development paths. And a decision basis is provided for formulating scientific and reasonable regional space planning, a carbon emission reduction policy and a sustainable development strategy. The invention aims to solve the problem of how to improve the simulation accuracy of the carbon emission management regulation simulation system.
Owner:YUNNAN NORMAL UNIV

Atmosphere data assimilation method, device and equipment and storage medium

The invention provides an atmosphere data assimilation method and device, equipment and a storage medium. Relates to the technical field of computer science and atmospheric science fusion. The method comprises the following steps: adding a cost function, priori estimation and the gradient of the cost function into a gradient-based descent algorithm, adding posteriori estimation, and constructing a four-dimensional variation and ensemble Kalman filtering combined model based on Bayesian priori information; and carrying out data assimilation on atmosphere data based on the four-dimensional variation and ensemble Kalman filtering combined model. According to the method, an artificial intelligence technology is combined, especially deep learning and a Bayesian optimization adaptive algorithm are adopted, a traditional data assimilation algorithm is enhanced and optimized, and the method can be widely applied to prediction of extreme weather events such as high temperature and heat waves. Through assimilation of historical data and real-time observation data, the prediction precision of the future climate change trend is significantly improved, and more powerful support is provided for extreme weather early warning and decision making.
Owner:LANZHOU UNIV

Comprehensive evaluation method for phenological change trend of vegetation

The invention relates to the field of ecological environment and climate change research, and discloses a vegetation phenology change trend comprehensive evaluation method, which comprises the following steps: acquiring climate data and tree ring data of a target area, simulating a relationship between radial growth and phenology of a tree by using a Vaganov-Shashki n model based on the acquired data, and generating a time sequence of phenology change; extracting phenological key nodes such as growing season starting time, end time and growing season length; analyzing the driving effect of climatic factors on phenological key nodes, and determining main influence factors; on the basis of the climate model and different emission scenes, predicting the vegetation phenological trend under future climate change; the response of the regional ecosystem to climate changes is evaluated based on historical and future data. Through simulation and quantitative analysis, a scientific basis is provided for long-term trend prediction and regional ecological management of vegetation phenological change, and the method has high applicability and reliability.
Owner:GANSU AGRI UNIV

Flood season water environment pollution control method

The invention discloses a flood season water environment pollution prevention and control method, and relates to the technical field of water pollution prevention and control, and the method comprises the following specific steps: data collection and preprocessing: collecting related data covering hydrology, water quality, land utilization, population distribution and industrial layout from each information department, according to the method, the influence of climate change on flood season water pollution is considered, historical meteorological data of a target area is collected and analyzed, a long-term climate change trend is accurately identified by using a meteorological analysis model, a climate background basis is provided for correlation analysis, and on the basis, a water pollution diffusion prediction model and a hydrological simulation model are combined, so that the flood season water pollution prediction accuracy is improved. The water regimen change characteristics and the water pollution risk degree of the flood season in the future specific prediction period are analyzed, the current flood season water pollution problem can be effectively solved, the adaptability to future climate change challenges can be improved, and a scientific basis is provided for making a long-term water pollution prevention and control strategy.
Owner:NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA

Method and device for simulating suitable habitat of species in future climate

The invention relates to a species suitable habitat simulation method and device under future climate, and the method comprises the steps: obtaining remote sensing data, foundation observation data and species distribution data in a target region, and carrying out the unified preprocessing of the data, and obtaining processed data; constructing environment characteristic variables based on the processed data, and performing screening to obtain a training data set meeting species suitability modeling input conditions; and constructing a species suitability model under the current climate condition by using the training data set, predicting species suitable habitat distribution under a future climate scene by using the species suitability model, and analyzing a spatial change trend according to the species suitable habitat distribution. Therefore, the problems that remote sensing and foundation observation data are isomerism in the aspects of time, space, scale and the like, an effective data fusion and index conversion mechanism is lacked, registration errors and feature inconsistency are easily caused, and the accuracy and reliability of ecological parameter estimation are affected are solved.
Owner:TSINGHUA UNIVERSITY

Urban rainfall area IDF curve establishment constraint method and system

The invention provides an urban rainfall area IDF curve establishment constraint method and system. The method comprises the following steps: collecting actually measured rainfall data and GCM simulated rainfall data; establishing a spatial downscaling model, and performing spatial downscaling on the grid monthly rainfall estimated by the GCM in the future period; calculating the condition transition probability of rainfall occurrence in each calendar month in the future period; generating a parameter set for driving a random rainfall generator, and inputting the parameter set into the random rainfall generator to obtain a daily rainfall sequence in a future period; performing time discretization from the daily scale to the hour scale on the daily rainfall sequence in the future time period; extracting an annual maximum value sequence from the hour drop sequence in the future time period to carry out regional frequency analysis, and constructing an urban rainfall region IDF curve; constructing a random forest model, and deducing alternative factors of IDF curve migration change; and an emergence constraint model is constructed, and the uncertainty of urban rainfall risk prediction under future climate change is reduced. The accuracy of rainfall frequency analysis is improved.
Owner:WUHAN UNIV

Soil micro-ecology flora regulation and control method and system

The invention discloses a flora regulation and control method and system for soil micro-ecology, and belongs to the technical field of microbial flora regulation and control, and the method comprises the steps: continuously collecting real-time environment data based on a target soil region, combining future climate prediction data, and generating a predicted scene sequence through Monte Carlo simulation; constructing a microbial community composition table, screening core strains, and performing metagenome sequencing; taking the core strain as a game participant, constructing a participant strategy set, calculating an income matrix library, setting an environment correction coefficient for each scene, carrying out scene-based game solving, and generating a balanced summary table; a regulation response prediction model is constructed, multiple optimization objectives are set, robustness constraints and expert rules are introduced, candidate regulation schemes are generated, optimal scheme solving is carried out, it is ensured that regulation measures can achieve an expected effect by guiding inter-species competition, and original flora balance is prevented from being damaged.
Owner:SHAANXI INST OF BIOLOGICAL AGRI +1

Historical time sequence insufficiency-oriented violent snow disaster risk degree probability prediction method

The invention discloses a sudden snow disaster risk degree probability prediction method oriented to insufficient historical time sequences. The method comprises the following steps: step 1), constructing a multi-index risk index based on related data such as historical snow disasters; 2) performing time sequence modeling on the violent snow disaster risk index by adopting an autoregressive integral moving average model, and capturing trend and periodic characteristics of the violent snow disaster risk index; 3) discretizing a continuous risk index of modeling production into a plurality of risk levels, and constructing a state transition probability matrix; step 4), introducing space neighborhood influence and carrier exposure constraint, and constructing a Markov space weighted state transition model; 5) coupling CMIP6 climate scene data, and dynamically adjusting future state transition probability, and 6) fusing ARIMA trend prediction and Markov state transition probability, and outputting future multi-period snowstorm disaster risk level probability distribution.According to the method, the accuracy of snowstorm disaster risk prediction and the modeling ability and prediction adaptability of future climate change scenes are improved.
Owner:INST OF DESERT METEOROLOGY CMA URUMQI

Hydrological model time-varying parameter prediction method based on ensemble Kalman filtering and deep residual network

The invention discloses a hydrological model time-varying parameter prediction method based on ensemble Kalman filtering and a deep residual network. The hydrological model time-varying parameter prediction method comprises the following steps: acquiring watershed multi-source data; acquiring time-varying parameter historical time sequence data of the hydrological model by using an ensemble Kalman filtering method; constructing a deep residual network prediction model based on the convolutional neural network; and training the model, inputting the obtained hydrological and meteorological data in the future climate mode into the trained model, and outputting hydrological model time-varying parameters in the future scene. According to the method, the historical data of the time-varying parameters of the hydrological model are acquired by using a data assimilation method, the future change of the parameters of the hydrological model is predicted through the deep residual network and future climate mode data, and a brand new data driving method is provided for dynamic prediction of the parameters of the hydrological model; and powerful technical support is provided for water resource management and climate change challenges in the future.
Owner:NANJING HYDRAULIC RES INST

Method and system for predicting drought and flood sudden change based on artificial intelligence

The invention provides a drought and flood sudden change prediction method and system based on artificial intelligence, and the method comprises the steps: collecting the in-out reservoir runoff observation data of a reservoir in a target region, obtaining a restored natural reservoir runoff series based on a water balance method, calibrating a long-short-term memory model through a minimum batch gradient descent method, and carrying out the prediction of the drought and flood sudden change. Based on the natural reservoir runoff, the actual reservoir runoff and meteorological data, constructing a long-short-term memory model to simulate the influence of water conservancy project regulation and storage on the runoff; based on an earth system mode set and a multivariable deviation correction method, performing spatial downscaling on output data of earth system modes to obtain corrected meteorological variables; driving a multi-member set of an earth system mode, and separating by adopting a detection attribution technology to obtain a contribution rate of man-made climate compulsion to drought and flood sudden turning event evolution; and predicting a daily runoff process under future climate change, and predicting a future drought and flood sudden turning event by adopting deep learning and superposition of regulation and storage influence of a water conservancy project.
Owner:YOUJIANG WATER CONSERVANCY DEV CO LTD +1

BMP optimal configuration method adapting to climate change based on SWAT

The invention relates to the technical field of environmental science, and discloses an SWAT-based BMP optimal configuration method adaptive to climate change, and the method comprises the steps: collecting pollution data of a target agricultural region, and constructing an NPS simulation model of the target agricultural region based on an SWAT model; collecting basic data of a target agricultural area, determining implementation data of a plurality of preset optimal management measures, and constructing an optimal management measure database; based on the optimal management measure database, performing parameter optimization on the NPS simulation model to form an NPS simulation optimization model; simulating climate change in future time according to the climate observation data and the historical meteorological data, and constructing a meteorological database; and based on the meteorological database, operating the NPS simulation optimization model, and performing optimal management measure optimization configuration analysis through a genetic algorithm to obtain an optimal management measure optimization result. According to the method, resources can be reasonably configured, and the flexibility, adaptability and actual effect of optimal management measures are improved.
Owner:SUN YAT SEN UNIV

Alpine grassland livestock capacity monitoring and predicting method and system based on climate change

PendingCN121119205AEnsemble learningForecastingClimatic adaptationEngineering
The invention discloses an alpine grassland livestock capacity monitoring and predicting method and system based on climate change. The alpine grassland livestock capacity monitoring and predicting method based on climate change comprises the following steps: 1) modeling data preprocessing: acquiring grassland type data and meteorological factor data, and carrying out space-time mask fusion, year / month scale space-time alignment and dynamic standardization to obtain grassland type standardized data; 2) feature screening and XGBoost modeling: performing feature importance screening and multi-parameter grid search optimization on grassland type standardized data by using a random forest model, and establishing and verifying a model; 3) preprocessing future CMIP6 climate factor data; and (4) predicting the livestock carrying capacity by using the results of the steps (2) and (3). According to the method, the potential influence of the climate change on the alpine grassland ecosystem can be evaluated on the regional scale, the variation trend of the future livestock capacity is accurately predicted, and a scientific basis is provided for formulating pasturing area management, ecological restoration and climate adaptability strategies.
Owner:NANJING UNIV OF INFORMATION SCI & TECH

Multi-source rainfall fusion correction method for regional rainfall type landslide threshold

PendingCN120744751ABiological modelsEarly warning systemClimatic adaptation
The invention discloses a multi-source rainfall data fusion method for a regional landslide early warning threshold. The method comprises the following steps: improving the spatial resolution of long-sequence raster data by adopting a statistical downscaling technology; according to the landslide position, selecting an optimal neighborhood method or a Thiessen polygon method to generate a site and grid representative precipitation sequence pair; establishing a dry day / wet day discrimination model based on the characteristics of the rainfall event triggering the landslide; correcting daily precipitation based on a quantile mapping method; and constructing a regional rainfall landslide threshold curve and performing precision test. According to the method, the defects of low precision of long-sequence grid data, short site data time sequence and space-time difference between a site rainfall observation position and a landslide occurrence position can be improved, and an effective means for establishing a rainfall type landslide early warning system is provided for a data lacking area. Meanwhile, the method can be migrated to rainfall type landslide risk assessment in a global future climate situation mode, and scientific support is provided for constructing a climate adaptation type disaster reduction system.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES

Machine learning and multi-factor coupled concrete carbonization depth prediction model establishment method

The invention relates to a machine learning and multi-factor coupled concrete carbonization depth prediction model establishment method. The method specifically comprises the steps of obtaining future global climate data; building a dynamic temperature and humidity coupling carbonization model; building a diffusion-reaction equation of CO2, Ca (OH) 2 and relative humidity, and correcting a CO2 diffusion coefficient; setting initial and boundary conditions of the equation; future climate data is dynamically mapped to concrete surface concentration calculation under boundary conditions, and a surface mass transfer correction coefficient equation driven by wind speed is introduced; performing space-time discretization on the equation, introducing Taylor expansion to construct a third-order precision difference format, and solving a nonlinear coupling equation set; future global climate data are input into the dynamic temperature and humidity coupling carbonization model, the surface boundary condition of the coupling carbonization model in each time and space step length is updated, the internal diffusion coefficient is corrected in real time, and the change of the carbonization depth along with time is calculated. The method provides a scientific basis for the durability design of the infrastructure, and has remarkable economic benefits and social values.
Owner:NANJING UNIV OF SCI & TECH

A method and device for simulating wind erosion at a construction site

The present invention provides a method and device for simulating wind erosion at a construction site, the method comprising the following steps: Step 1: Collect 0-5 cm surface soil samples of the riverside slope to be studied using a base with a detachable baffle on one side; Step 2: Combine a cover with an adjustable baffle with a base filled with topsoil to form an airtight space; Step 3: Connect an adjustable-speed blower to the cover to ensure airtightness at the interface, adjust the wind speed to a preset value, and simulate the normal wind speed of the research point; Step 4: Install a particle capture device at the opening on the opposite side of the cover connected to the blower to receive particles generated by wind erosion, and complete the measurement of wind erosion amount and particle size composition. This method fills the data gap caused by the incomplete collection of wind erosion products by the existing wind erosion monitoring method. The technical solution of the adjustable wind speed and slope windward angle of the present application has the technical effect of restoring the current and simulating the acquisition of wind erosion parameters under different degrees of future climate change conditions.
Owner:BEIJING WATER SCI & TECH INST

Flood and drought disaster risk assessment and deduction system and method based on slope multi-level regulation and storage

The invention relates to a flood and drought disaster risk assessment and deduction system and method based on slope multi-level regulation and storage, and belongs to the technical field of flood and drought disaster risk prevention and control and watershed hydrological regulation and control. The method comprises the following steps: acquiring multi-source data of a target drainage basin, performing water source refined analysis through coupling of water transfer coefficients (K1 and K2) based on a hierarchical synergistic effect of'upper closure-middle retention-lower dissipation 'of a slope, and calculating a controllable, effective and renewable water source amount; in combination with the regulation and storage capacity difference of each level, carrying out flood and drought disaster chain risk collaborative assessment, and outputting hierarchical risks and 0-10 level set risk indexes; a physical mechanism and data driving coupled scene deduction model is driven, and historical extreme event redisk and future climate scene prediction are completed; and after rendering by a visual engine, through hierarchical slope regulation and storage threshold comparison, outputting a regulation and storage measure layout optimization scheme. The system adopts a micro-service architecture and comprises a data management module, a multi-level regulation and storage collaborative analysis module, a water source analysis module, a risk evaluation module, a scene deduction module, a decision support module and a threshold comparison module. According to the method, high-resolution accurate positioning, low-error simulation and efficiency improvement of flood and drought disaster risks are realized, a decision closed loop from risk identification to optimization regulation is formed, and direct and quantitative technical support can be provided for flood and drought prevention and control engineering practice of drainage basins.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1

Reservoir scheduling method and system based on rainfall forecast and remote sensing monitoring, and storage medium

The invention provides a reservoir scheduling method based on rainfall forecast and remote sensing monitoring. The reservoir scheduling method comprises the following steps: step 1, collecting basic data of a research area and constructing a plurality of basic databases; 2, the basic data of the basic database are preprocessed; 3, constructing a weather forecast model taking the reservoir catchment range as a core, and forecasting weather data in a forecast period; step 4, constructing a distributed hydrological model considering future climate and land utilization or cover change, and calculating a reservoir incoming flow process in a prediction period; 5, calculating irrigation area water deficit state data based on the irrigation area crop remote sensing image; 6, the incoming flow process and irrigation area water deficit state data of the reservoir in the future period in the prediction period serve as input conditions, boundary conditions and constraint conditions are coupled, and a reservoir adaptability scheduling model is constructed; and 7, solving the reservoir adaptability scheduling model. According to the invention, through comprehensive analysis of multi-source information, a multi-level scheduling model is established, and accurate scheduling of the reservoir is realized.
Owner:CHINA THREE GORGES CORPORATION +1

Method for simulating spatial and temporal change of drainage basin runoff under climate change based on RCCC-WBM model

The invention discloses a method for simulating spatial and temporal change of drainage basin runoff under climate change based on an RCCC-WBM model. The method comprises the following steps: acquiring actually measured rainfall, runoff, air temperature, evapotranspiration data and future climate data of a research area; performing cutting, interpolation, downscaling and multi-mode averaging processing on the corresponding future climate data, and calculating corresponding future evapotranspiration data; constructing a model, and performing parameter calibration and verification; 4 climate estimation scenes are classified and input into the model, and future runoff is simulated; and performing time change analysis on the monthly future runoff sequence. According to the method, the problems that a hydrological model adopted by an existing method is complex in structure, multiple in parameter, difficult to calibrate, insufficient in resolution ratio, low in precision and different in regional adaptability are fully solved; according to the method, a linear trend analysis method and a nonlinear trend analysis method are combined, the future runoff trend is analyzed, and the problem that an existing prediction method is not comprehensive enough in time change characteristic analysis is solved.
Owner:CHINA YANGTZE POWER

Simulation method and system for engineering geological survey in alpine permafrost region based on digital twinning

The application discloses a simulation method and system for engineering geological survey in alpine permafrost regions based on digital twinning, and relates to the technical field of engineering geological survey.The method comprises the following steps: obtaining multi-source heterogeneous data to construct a digital base; constructing a thermal-water-force-fracture multi-field coupling physical model based on the phase field theory; constructing a generative adversarial network as a time reversal engine to learn the mapping from the current state to the past state; inputting the current measured state into the time reversal engine to generate a historical evolution sequence, and comparing the historical evolution sequence with actual geological relics to dynamically calibrate model parameters; loading future climate scenarios to perform forward prediction, and fusing monitoring data through Kalman filtering to form a closed-loop corrected digital twin; and outputting a risk thermodynamic map, a fracture connectivity atlas and an engineering warning level based on the prediction result.The method can realize dynamic calibration and real-time early warning of the engineering geological model in the permafrost region, and improve the accuracy and calculation efficiency of the prediction of engineering geological disasters in cold regions.
Owner:JIANGSU LIANYUNGANG GEOLOGY ENG RECONNAISSANCE INST

Multi-lake system low-carbon-ecology collaborative scheduling method and system adapting to extreme climate

The invention discloses a multi-lake system low-carbon-ecology collaborative scheduling method and system adapting to extreme climate. The method comprises the following steps: constructing a future extreme climate scene set; constructing an urban-natural drainage basin coupling hydrological model, and obtaining multiple groups of lake inflow runoff sequences driven by various future extreme climate scenes according to the urban-natural drainage basin coupling hydrological model; taking minimization of annual total diversion carbon emission as a single target, and constructing a low-carbon-ecological collaborative optimization model according to a future extreme climate scene set and an urban-natural drainage basin coupling hydrological model; inputting each group of into-lake runoff sequences into a low-carbon-ecological collaborative optimization model for solving to obtain a plurality of groups of candidate scheduling schemes; and screening the candidate scheduling schemes to obtain an optimal scheduling scheme. The method can fully consider the uncertainty of future climate, improves the reliability of a scheduling scheme, solves the problem of difficulty in decision making of a multi-target model, and can be widely applied to the technical field of water resource scheduling.
Owner:SUN YAT SEN UNIV

Method and system for predicting carbon sequestration potential of wetland vegetation under future climate change

The present application discloses a wetland vegetation carbon sequestration potential prediction method and system under the influence of future climate change, belongs to the technical field of wetland vegetation carbon sequestration potential prediction, and comprises the following steps: obtaining the net primary productivity of vegetation, the vegetation coverage, the monthly temperature, the precipitation and the atmospheric carbon dioxide concentration in the historical period and the future period; calculating the annual average net primary productivity of vegetation, the coverage and the multi-year average vegetation coverage; calculating the annual average temperature, the precipitation and the carbon dioxide concentration; extracting the wetland vegetation pixel distribution as the research area range; calculating the ratio of the annual average net primary productivity to the vegetation coverage to obtain the wetland vegetation carbon sequestration potential value in the historical period; adopting the multiple stepwise regression analysis method to build a per-pixel wetland vegetation carbon sequestration potential estimation model; and utilizing the annual temperature, the precipitation and the carbon dioxide concentration in the future period to realize the accurate prediction of the wetland vegetation carbon sequestration potential in the research area range in the future period.
Owner:NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S

Constructed wetland space optimization arrangement method and system

The invention discloses an artificial wetland space optimization arrangement method and system, a non-point source pollution model is constructed based on a hydrological response unit, target meteorological data, target pollution data and an SWAT model, and the simulation precision of the non-point source pollution process can be improved. Climate scene data is constructed through future climate data, a preset path rule and a simple quantile algorithm, and the influence of climate change on pollution load can be reflected. Furthermore, a wetland optimization model is constructed based on a non-point source pollution model and a target function, the scientificity of an optimization strategy is enhanced, candidate wetland areas are identified by a spatial analysis algorithm based on a complex terrain index CTI, and the maximum potential area of each candidate wetland area is counted, so that efficient identification of potential arrangement areas can be realized. The constructed wetland optimization regulation and control scheme is generated based on the preset genetic algorithm, and the constructed wetland space optimization arrangement is performed according to the scheme, so that the optimization and practicability of the constructed wetland layout can be realized.
Owner:SUN YAT SEN UNIV

Ecological system productivity estimation method for predicting optimal vegetation temperature based on LSTM (Long Short Term Memory)

The invention discloses an ecological system productivity estimation method for predicting the optimal vegetation temperature based on LSTM, and relates to the technical field of ecological information, and the method comprises the steps: obtaining historical weather, terrain and future climate data; constructing a spatial neighborhood of a target pixel, quantifying climate connectivity cost based on terrain and a wind field, and generating anisotropic spatial features; resolving a dynamic space-time confidence factor representing the microclimate complexity; inputting the anisotropic spatial features and the historical temperature into a long short-term memory network, regulating and controlling fusion weight through a dynamic gating mechanism by using confidence factors, and predicting the optimal vegetation temperature; constructing a decoupling model containing thermal kinetic energy and nonlinear thermal stress terms, and calculating productivity based on a predicted value and future temperature; according to the method, the microclimate heterogeneity and the vegetation thermal adaptation mechanism can be accurately depicted, and the estimation precision of the productivity of the ecological system under the complex climate scene is effectively improved.
Owner:NANJING UNIV

Analysis method and system for watershed nitrate loss based on prediction results of climate and land use type changes

The present invention provides a method and system for analyzing nitrate loss in a basin based on the prediction results of climate and land use type changes, which relates to the field of determination and analysis of basin water resources. Based on the observed data of meteorological stations and meteorological factors of GCMs, the present invention predicts future precipitation and temperature under different SSP scenarios; based on historical land use data and LUH2 land use data, spatio-temporal conversion is performed to obtain future land use types under different SSP scenarios; the two sets of output results are used as input conditions for the surface water-groundwater coupling model, and the nitrate loss data in the basin under climate and land use changes are analyzed. The present invention can predict future climate and land use type changes, analyze the evolution laws of future water resources volume and surface water-groundwater interaction volume in the study area, and give more accurate quantitative results on the impact of climate and land use type changes on nitrate loss in the basin.
Owner:NANJING HYDRAULIC RES INST

Agroclimate resource evaluation system based on climate mode driving

The invention provides an agricultural climate resource evaluation system based on climate mode driving, and the system can generate future climate estimation data through the cooperation of a plurality of modules including data acquisition, preprocessing, statistical downscaling, mode evaluation, multi-mode collection, agricultural climate resource calculation, visual output and the like. According to the system, the prediction precision can be adjusted according to actual observation data, automatic data downloading and space-time matching are achieved through a Python script library, and a multi-level data output module provides provincial and city-county scale evaluation reports and an interactive visual platform. And real-time query and decision support is provided for the user, so that the precision and reliability of climate prediction are remarkably improved.
Owner:海南省气候中心 +1

Crop irrigation and fertilization decision-making method based on probability constraint

The invention provides a crop irrigation and fertilization decision-making method based on probability constraint. The crop irrigation and fertilization decision-making method comprises the steps of obtaining multi-source input data, and collecting key growth index data of crops through field trials. A Markov chain is adopted to simulate distribution and correlation of different variables in meteorological historical observation data, a day-by-day meteorological sequence is generated, and the day-by-day meteorological sequence is used for reflecting the natural variation rate and uncertainty of future climate conditions. A to-be-optimized water and fertilizer management variable set is set, the crop DSSAT model is operated in each meteorological scene, and constraint conditions are constructed; and under the constraint condition, carrying out global optimization on the target function by adopting a multi-target optimization algorithm to obtain a Pareto optimal solution set. By introducing a multi-scene meteorological simulation method and combining a crop DSSAT model and a multi-objective optimization algorithm, the adaptive capacity and robustness of a crop management scheme under actual climate conditions are improved, and the scientificity and systematicness of agricultural management decisions are further improved.
Owner:SHENZHEN FENGNONG SHUZHI AGRI TECH CO LTD

Regional crop water productivity prediction method, device, equipment, medium and product

PendingCN122088789ASolve the problem of "not seeing the whole picture"Solve the problem of "unclear mechanism"ForecastingMachine learningWater productivitySoil science
This application discloses a method, apparatus, equipment, medium, and product for predicting regional crop water productivity, relating to the field of smart agriculture. The method includes inputting historical and future climate data into an ecosystem process model to obtain simulated net primary productivity and simulated evapotranspiration for historical and future times; using a bias mapping method based on the simulated evapotranspiration, actual evapotranspiration, and simulated evapotranspiration for future times to obtain predicted evapotranspiration for future times; training multiple machine learning models based on the simulated net primary productivity, agricultural management data, and grain yield per unit area for historical times to obtain a crop yield prediction model; obtaining the predicted grain yield per unit area for future times based on the crop yield prediction model; and obtaining the regional crop water productivity based on the predicted evapotranspiration and the predicted grain yield per unit area for future times. This application can achieve high-precision, high spatiotemporal resolution, and high-reliability prediction of regional crop water productivity.
Owner:INSTITUTE OF ENVIRONMENT AND SUSTAINABLE DEVELOPMENT IN AGRICULTURE CAAS

Evaluation method for plant habitat suitability

PendingCN120450486AForecastingOptimality modelClimatic adaptation
The invention belongs to the technical field of protection biology, and particularly relates to a plant habitat suitability evaluation method. According to the specific technical scheme, survival rate and growth rate indexes under different precipitation amounts and temperature gradients are evaluated through field planting experiments, a model is established, and expression and potential adaptability of research species on different climate gradients are quantified and evaluated; mapping an optimal model result to a geographic space through a geographic information system or remote sensing data, and performing time regression on past climate suitability indexes to obtain the suitability change rate of the research species; and carrying out linear regression in the future time by utilizing the suitability change rate, which is an index showing the adaptability change trend of the research species, and predicting the future climate adaptability of the research species to obtain the suitable habitat area of the research species in the future space, thereby providing support for the protection work of the research species.
Owner:CHENGDU INSTITUTE OF BIOLOGY CHINESE ACADEMY OF SCIENCES

A method for assessing water resources stress integrating socio-economic and climate change

The application relates to a water resource pressure assessment method integrating social economy and climate change. It relates to the technical field of water resource pressure assessment in arid river basins. The method comprises the following steps: obtaining historical values and predicted values of social economic data, correcting the predicted values of the social economy to obtain corrected predicted values; calculating potential evapotranspiration in different scenarios based on historical scenario meteorological data and corrected future climate mode data; calculating future basin water resources based on the correlation between basin rainfall and water resources; extracting drought intensity characteristics according to the change trend of the historical scenario and the future scenario basin drought index; constructing a basin water resource pressure index calculation formula; and according to the calculated water resource pressure index of the water resource region, standardizing the index to obtain a standardized index, and evaluating the change trend of the water resource pressure of the region in different scenarios according to the standardized index. The method solves the problem of quantification and evaluation of basin water resource pressure under complex conditions.
Owner:CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACAD OF SCI

Methods for predicting local and global climate changes

The invention describes a method by which it is possible to predict past and future climate changes by measuring changes in local and global magnetic fields on the Earth's surface in time and space and comparing them with older measurements and effects.
Owner:UEHLIN JURGEN