44 results about "Water scarcity" patented technology

The invention discloses a water-grain-energy-ecology association system collaborative configuration method considering unconventional water utilization, which comprises the following steps: firstly, constructing a water-grain-energy-ecology association system collaborative configuration model, and quantitatively analyzing the interaction relationship among water resource distribution, agricultural production, energy utilization and ecological protection; a vine copula method is adopted to quantify a complex interdependence relationship among a plurality of random variables; vine copula and a multi-stage stochastic optimization method are integrated to solve the model, and the influence of the brackish water utilization rate, the joint default probability and the incoming water level on the WFEE association system is analyzed. According to the method, cooperative configuration of unconventional and conventional water resources is considered, the pressure of shortage of regional water resources is relieved, and the complex mutual influence relationship among the subsystems is reflected.

The invention discloses a hydrological and biological communication-based degraded marsh rapid recovery method, which aims at the problems of water resource shortage and biological isolation in a degraded marsh area, and comprises the following steps of: constructing a controllable hydrological communication channel between the degraded marsh area and an adjacent natural river, accurately opening the controllable hydrological communication channel in a natural river flooding season, and utilizing flood power to realize rapid recovery of the degraded marsh area. And the natural and efficient supply of water resources to the recovered degraded marsh area and the direct input of various aquatic organisms in the natural river are synchronously realized. And according to the life cycle key stage of the target aquatic organism, the opening time, frequency and period of the controllable hydrological communication channel are regulated and controlled, and the biological input effect is maximized. After the controllable hydrological communication channel is closed, the degenerated marsh area is kept stable in the non-flood period, and habitat building and monitoring are assisted. The method is low in cost, high in efficiency and small in ecological risk, can quickly reconstruct aquatic organism communities and ecological network functions, and is particularly suitable for restoration engineering of large-scale returning to wetness and degraded marsh.

The invention discloses an arid and semi-arid region well and canal double-irrigation rotation irrigation wind-solar complementary intelligent water-saving salt-control irrigation device and method. The device comprises a sensor monitoring module used for acquiring environment data and water level information of well water and canal water in real time; the energy supply module comprises a solar assembly and a wind power generation assembly, the solar assembly is used for converting solar energy into electric energy, the wind power generation assembly is used for converting wind energy into electric energy, and the energy supply control module is connected with the sensor monitoring module and the energy supply module. The calculation module is used for calculating irrigation water quantity according to the environment data and the water level information; and the irrigation module is connected with the control module and is used for controlling the output water quantity according to the calculated irrigation water quantity. Water resource shortage in arid and semi-arid areas can be relieved, and water resource waste in the irrigation process is avoided.

The invention discloses a short-medium-long nested water-saving irrigation decision-making method based on numerical weather forecast. The method comprises the following steps: (1) checking the precision of a numerical weather forecast product; (2) constructing a real-time irrigation forecasting model; (3) real-time irrigation forecast is driven by numerical weather forecast, and a'short-medium-long 'nested water-saving irrigation decision is implemented; real-time irrigation forecast is driven by numerical weather forecast, a water-saving irrigation decision and an irrigation water plan are implemented layer by layer with the forecast period of weather forecast as a guide, the forecast period of real-time irrigation forecast is prolonged, the problem of rain after irrigation is solved, and the method has a remarkable water-saving effect in the aspect of relieving water resource shortage in the drought period.

The utility model relates to the technical field of irrigation devices, in particular to a rainwater collecting and recycling water-saving irrigation device. The device comprises a rainwater collecting assembly, a sundry removing assembly is arranged on the rainwater collecting assembly, a planting assembly is arranged at the top of the rainwater collecting assembly, and an irrigation assembly is arranged on the planting assembly. When irrigation is needed in sunny weather, the system can automatically and uniformly irrigate collected rainwater through the irrigation assembly only by starting the electric pump, tedious manual operation is not needed, labor cost is saved, meanwhile, timeliness and accuracy of irrigation are guaranteed, and healthy growth of plants is facilitated. According to the water-saving irrigation device, rainwater is collected in rainy days through the rainwater collecting assembly and stored for follow-up plant irrigation, dependence on traditional water resources is greatly reduced, the utilization efficiency of the water resources is improved, the purpose of water-saving irrigation is achieved, and the problem of water resource shortage is solved.

The invention discloses an irrigation pipe network intelligent scheduling method and system based on a hydraulic model, and the method can simulate the hydraulic behaviors of a pipe network in different operation scenes through the construction of a hydraulic irrigation simulation model, thereby achieving the precise simulation and prediction of the hydraulic behaviors in the irrigation pipe network. On the basis, an irrigation pipe network intelligent scheduling optimization objective function is established by taking optimal water supply quality as an objective according to the requirements of crop types and growth cycles of a target area for water. The minimum absolute error between the actual irrigation amount and the theoretical water demand is considered, key conditions such as the water supply amount constraint, the head valve working pressure constraint and the pipeline pressure constraint are also fused, and the scientificity and rationality of irrigation scheduling are ensured. Therefore, the irrigation efficiency can be remarkably improved, water resources are saved, healthy growth of crops is promoted, and effective technical support is provided for solving the problems of water resource shortage, poor irrigation management and the like in modern agriculture.

The invention is applicable to the technical field of sunlight utilization and wastewater treatment, and provides a preparation method and application of a photo-thermal-photocatalytic solar interface evaporator. According to the method, alkalized polyacrylonitrile aerogel is used as a matrix framework, BiOI-Bi-Bi2O3 composite particles are used as main photo-thermal-photocatalytic functional materials, and the photo-thermal-photocatalytic solar interface evaporator is prepared. And the single layer of Ti < 3 > C < 2 > T < x > MXene is used as a synergistic photo-thermal and photo-photocatalytic auxiliary agent. According to the prepared composite aerogel, BiOI, Bi2O3 and Bi are combined to form a stable interface heterostructure, and meanwhile, full-wave-band efficient utilization of a solar spectrum is realized by utilizing single-layer Ti < 3 > C < 2 > T < x > MXene. The evaporator can be used for effectively treating a water source containing complex pollutants and synchronously realizing desalination and deep purification. The evaporator has remarkable effects in the aspects of improving the photo-thermal conversion efficiency, optimizing the evaporation process and the resource utilization rate, protecting the environment, saving energy and the like, and has wide application prospects in the aspects of water resource shortage and water environment pollution.

The invention discloses a cloud supercooled water content prediction method based on deep learning and spatio-temporal data driving, and the method comprises the steps: obtaining satellite multi-channel radiation transmission data, carrying out the channel screening and feature extraction, obtaining radar reflectivity data, and carrying out the data interpolation and feature extraction; the method comprises the following steps: acquiring conventional meteorological data of a ground automatic meteorological station, performing feature extraction, fusing the features by using a multi-head attention mechanism to obtain fused features, establishing a deep learning neural network model, and predicting the content of supercooled water in cloud in a future time period. The method can more comprehensively and accurately predict the content and the distribution condition of the supercooled water in the cloud, and has important scientific and practical significance for relieving water resource shortage, improving the ecological environment and guaranteeing low-altitude economic safety.

The invention relates to a sewage treatment water quality prediction method based on an optimized minimum count summary algorithm and a deep learning model, and aims to improve the accuracy of water quality monitoring and reduce the monitoring cost. Along with the acceleration of industrialization and urbanization processes, the problems of water pollution and water resource shortage are more and more serious. In order to improve the utilization efficiency of water resources, sewage recovery and treatment are particularly critical. In the sewage treatment process, water quality monitoring data provides an objective evaluation standard for the treatment process, but due to monitoring period and cost differences of different water quality indexes, a traditional direct measurement method faces great challenges. According to the method, the minimum count summary (Count Min Sketch, CMS) algorithm and the deep learning model are combined, the optimized minimum count summary algorithm is used for extracting frequency domain information, and the frequency domain information serves as features to be input into the long short-term memory network (LSTM)-Attention model, so that the precision of water quality prediction is remarkably improved. The method not only improves the prediction precision of the model, but also is efficient and low in cost.

The invention discloses a method for preparing a blended micromolecular biphenyl tetracarboxylic acid-polyvinylidene fluoride membrane through electrostatic spinning, a blended membrane and a method for recovering silver ions in a water body. The method for preparing the blended small molecular biphenyl tetracarboxylic acid-polyvinylidene fluoride membrane through electrostatic spinning comprises the following steps: S1, carrying out electrostatic spinning on a solution composed of polyvinylidene fluoride, biphenyl tetracarboxylic acid and a solvent, and collecting a fiber membrane; and S2, carrying out heat treatment on the fiber membrane to obtain the blended small molecular biphenyl tetracarboxylic acid-polyvinylidene fluoride membrane. According to the BPTC-PVDF nanofiber matrix membrane prepared by the method disclosed by the invention, adsorbed silver ions can be converted into elemental silver under an illumination condition, so that not only can the silver ions in wastewater be effectively removed, but also silver resources can be recycled, and powerful technical support and a solution are provided for solving global problems such as water resource shortage and environmental pollution.

The application discloses an adaptive method for relieving double risks of water quality and water quantity of agriculture, and belongs to the technical field of water resource management.The method is based on a farmland soil nitrogen balance and hydrodynamics coupling model, quantifies a pollution emission list of subdivided sources in the growth process of specific crops, and simulates agricultural pollution dilution water quantity; a crop water requirement model is used to calculate irrigation water consumption of the specific crops in the whole growth period; a water resource loss evaluation module is established to evaluate potential agricultural yield reduction and economic loss caused by water resource shortage; a scenario library of water and fertilizer coordination strategies is constructed to compare the relieving effects of different adaptive strategies on water quantity depletion type and water quality pollution type water resource risks.The application solves the technical problem that it is difficult to simultaneously cope with water quantity risks and water quality risks to develop targeted adaptive strategies, can effectively relieve water resource pressure, improve the sustainability of agricultural production, realize optimal allocation of water resources, and further guarantee the health of an ecological system.

The invention discloses a liquid energetic material composed of non-dangerous chemical raw materials and a preparation method of the liquid energetic material, the liquid energetic material is formed by mixing an oxidizing agent concentrated solution and glycerin in proportion, and the oxidizing agent concentrated solution is obtained by mixing calcium ammonium nitrate, ammonium carbonate and water in proportion and then conducting filtration and vacuum concentration. According to the invention, the prior art is greatly improved, and the three raw materials are all non-dangerous chemicals, so that the traffic and storage safety in the long-time land and marine transportation process in the offshore oilfield operation can be greatly improved; the mode of obtaining the liquid energetic material on site is simple, and seamless butt joint operation with existing liquid gunpowder deflagration fracturing can be achieved; the influence of temperature on solubility is overcome, the composition proportion is moderate, the system can be completely dissolved after being prepared, the operation water adding amount is reduced by utilizing crystal water in the raw materials, and the preparation method is suitable for the environment in shortage of water resources.

The subject invention provides compositions and methods of their use for improving soil structure and hydrology. Advantageously, the compositions and methods of the subject invention can be formulated as environmentally-friendly, non-toxic and cost-effective solutions to the growing problems of, for example, water shortages, water-use inefficiency, declining soil health, nutrient leaching and runoff, and soil-borne greenhouse gas emissions.

The application discloses a kind of reservoir water resource optimal allocation method based on multi-stage multi-objective belonging to water resource management technical field, comprising the following steps: A, predict the water resource demand, water resource available quantity, social economy and other basic data in basin;B, with the maximum unit water resource utilization benefit as target, with reservoir water balance, irrigation and power generation water demand, salinity leaching and so on as constraint condition, construct water resource optimal allocation model;C, coupling fixed combination stochastic programming and fractional programming method is solved to model, according to the water resource shortage obtained under different probability level arrangement production to reach maximum unit allocation water benefit.The application fully considers the necessity of joint management of upstream hydropower generation and downstream agricultural irrigation in reservoir management system, reasonably allocates water resources, land resources and energy in the basin, obtains the maximum unit allocation water benefit, so as to relieve water contradiction and improve the utilization efficiency of resources.

The invention belongs to the technical field of industrial sewage treatment, and provides a multi-water-source coupling application method for wastewater reuse, which comprises the following steps: balancing municipal sewage multi-point introduction load, blending reclaimed water with new water, online cleaning and ultrafiltration during immersion, online cleaning of a reverse osmosis membrane and online sterilization of the reverse osmosis membrane. The application of the method relieves the restriction of water resource shortage on sustainable development of companies; meanwhile, the situations of shortage of urban water resources and serious water area pollution can be relieved, co-fusion development of cities and enterprises is achieved, a new sustainable development way is developed for green development of iron and steel enterprises and comprehensive utilization of water resources, and wide popularization prospects and profound social significance are achieved.

An offshore energy generation system (OEGS), is described. The offshore energy generation system delivers clean energy in the form of electricity and / or ammonia (NH3) and freshwater to offshore or onshore consumers. By deploying this offshore energy generation system, the net zero emissions targets from IPCC can be achieved and the water scarcity crisis mitigated. The offshore energy generation system enables better safety of the population served, optimal use of land, eliminate land use conflicts and enables the protection of the world cultural heritage. The offshore energy generation system comprises of an electric power generation system based on nuclear or hydrogen (H2) fuel cells, ammonia generation, freshwater generation, offshore cranes, data processing centers, blockchain, helideck, telecommunications system, automation and control system, nitrogen and hydrogen generation systems.

The invention discloses a key path and intermediate node identification method for implied water shortage risk transmission based on an intermediary centrality algorithm, and relates to the field of water resource management. The water shortage risk of each department in each area is calculated based on the water resource dependency of each department in each area and in combination with the water shortage probability of each area; constructing a hidden water shortage risk transfer matrix according to the water shortage risk of each department and based on a multi-region input-output model; based on the structural path analysis and the hidden water shortage risk transfer matrix, identifying a key transmission path of the hidden water shortage risk, and constructing a hidden water shortage risk transmission network; the key intermediate nodes in the implicit water shortage risk transmission network are identified based on an intermediary centrality algorithm, and all key transmission paths and intermediate nodes of implicit water shortage risk transmission in a supply chain can be identified, so that the toughness of the whole trade network in coping with water resource shortage is improved.

The invention discloses a water resource dynamic bearing capacity evaluation method and system, and relates to the technical field of water resource management. An input-output relation among a climate mode, a meteorological factor and a land water resource system, a water resource circulation conversion relation equation, a pollutant circulation conversion relation equation, an economic and social system internal restriction equation, a water resource bearing index restriction equation and an ecological and environment control target restriction equation are used as constraints; establishing a water resource dynamic bearing capacity model; and on the basis of the established water resource dynamic bearing capacity model, predicting a water resource bearing capacity change trend in future time. According to the method, the dynamic bearing capacity change trend of the water resource can be accurately evaluated in real time, and the defects of an existing static model in practical application are overcome. Under the extreme conditions of water resource shortage, drought and the like, a scientific decision basis can be provided for government departments, and sustainable development of social economy is guaranteed.

The invention discloses compression type air condensation water taking equipment powered by solar energy, which integrates a solar power generation panel, a storage battery, a compressor, an evaporator, a condenser, a capillary tube and other key components, and converts solar energy into electric energy through the solar power generation panel to drive the compressor to compress a refrigerant, so that the refrigerant is condensed into water. Heat is released in the condenser, the air is heated, and meanwhile the air is condensed into a liquid state; the liquid refrigerant enters the evaporator after being throttled by the capillary tube, is quickly evaporated and absorbs heat, so that the surface temperature of the evaporator is suddenly reduced, and water vapor in air is promoted to be condensed into water. The equipment is compact in structure, portable and flexible, can be widely applied to water-deficient areas, field operation, remote mountainous areas and other scenes, and realizes efficient, environment-friendly and economical water resource acquisition; by optimizing the evaporation and condensation process, the water taking efficiency is improved, the energy consumption is reduced, remarkable social and economic benefits are achieved, and an innovative solution is provided for solving the problem of water resource shortage.

This application discloses a method and system for intelligent scheduling of irrigation pipe networks based on a hydraulic model. By constructing a hydraulic irrigation simulation model, it is possible to simulate the hydraulic behavior of the pipe network under different operating scenarios, thereby achieving accurate simulation and prediction of the hydraulic behavior within the irrigation pipe network. On this basis, based on the type of crops in the target area and their water requirements during their growth cycle, and with the goal of optimizing water supply quality, an optimization objective function for intelligent scheduling of the irrigation pipe network is established. Not only is the minimum absolute error between the actual irrigation volume and the theoretical water demand considered, but key conditions such as water supply constraints, head valve working pressure constraints, and pipeline pressure constraints are also incorporated to ensure the scientific nature and rationality of irrigation scheduling. Therefore, it can significantly improve irrigation efficiency, save water resources, promote the healthy growth of crops, and provide effective technical support for solving problems such as water resource shortages and poor irrigation management in modern agriculture.

The invention discloses a sewage treatment method of an industrial enterprise. The treatment method and process of a whole treatment system from front to back are as follows: incoming water, an interception grate, a coarse screen, a fine screen, a pre-sedimentation tank, a sedimentation tank, a filter and reclaimed water reuse; wherein sludge water of the preliminary sedimentation tank and sludge water of the sedimentation tank are conveyed to the concentration tank and the plate-and-frame filter, and sludge cakes are conveyed outwards. The invention aims to provide the sewage treatment method for the industrial enterprise, and the treated sewage is industrial and domestic mixed wastewater, so that the sewage can be reused, the pressure of water resource shortage is relieved, and sustainable utilization of water resources is realized.

The invention provides a regional water ecological bearing capacity evaluation method and system, and relates to the technical field of regional water ecological bearing capacity evaluation.A to-be-monitored region is divided into three core subsystems including a water resource utilization subsystem, a carbon sink capacity subsystem and an energy consumption subsystem, a multi-dimensional coupling matrix is constructed, the mutual relation between the subsystems is quantified, and the water ecological bearing capacity is evaluated. Therefore, complex feedback among water resources, carbon sink and energy is revealed, the linkage effect of water resource shortage on the vegetation carbon sequestration amount and energy production is simulated through a system dynamics model, historical data calibration and real-time monitoring data dynamic correction are combined, and the accuracy and timeliness of the model are ensured; setting a reference threshold value based on the historical bearing capacity, and dynamically adjusting through a correction formula to form a real-time bearing capacity threshold value; and finally, calculating a comprehensive coordination degree, comparing the comprehensive coordination degree with a dynamic bearing capacity threshold value, dividing bearing capacity grades, and triggering early warning when the bearing capacity is close to or exceeds the threshold value.

The invention discloses a rainwater collection and irrigation device for a loess plateau. The rainwater collection and irrigation device mainly solves the problems of water and soil loss, water scarcity and agricultural irrigation in specific regions. According to the scheme, firstly, large-range coverage is formed in the loess plateau area through a rainwater collection shed, the greenhouse is made of a water-permeable material, normal rainwater moistening of land under the area is not affected while rainwater collection of the coverage area is achieved, and water and soil are kept after rainstorm impact force is weakened through the net-shaped greenhouse; then the collected rainwater flows into the underground part of the device through a central pipeline, is collected to an underground water storage system after being filtered, is connected with a drip irrigation system through the action of a water pump, and is used for performing drip irrigation on ground crops when the rainwater in the current area is deficient; meanwhile, a power supply system is arranged outside the device, and integration and automation of the whole device are achieved. According to the regional characteristics of the loess plateau region, local water and soil loss can be effectively improved, and the utilization rate of natural water resources in the region is increased.

The utility model discloses a rainwater collecting and irrigating device for a loess plateau. The rainwater collecting and irrigating device mainly solves the problems of water and soil loss, water scarcity and agricultural irrigation in specific areas. Comprising a rainwater collecting shed, a power supply system, a filtering unit, a water storage tank, a micro water pump and a water dropper, wherein the rainwater collecting shed is connected with the water storage tank through a central pipeline, the micro water pump is mounted in the water storage tank, and a water outlet of the micro water pump is connected with the dripper through a bent water pipe extending to the ground; large-range coverage is formed in the loess plateau area through a rainwater collection greenhouse, and water and soil are kept after the greenhouse is made of a net-shaped water-permeable material to weaken the impact force of rainstorm; the collected rainwater is filtered and then collected to the water storage system; and meanwhile, a power supply system is arranged outside the device, so that integration and automation of the whole device are realized. According to the regional characteristics of the loess plateau area, the utilization rate of natural water resources in the loess plateau area can be effectively increased.

The present invention discloses an integrated ice-melting, water-supplying, and water-purifying station for high-altitude cold regions. The station comprises a spray-type rapid ice-melting water-supplying device, a hot water boiler, a vacuum multi-stage cascade water purification device, and a desalination water purification device. The water outlet of the spray-type rapid ice-melting water-supplying device is connected to the water inlet of the vacuum multi-stage cascade water purification device, which is in turn connected to the water inlet of the desalination water purification device. The water outlet of the desalination water purification device is connected to an external water supply pipeline. The water outlet of the spray-type rapid ice-melting water-supplying device is also connected to a meltwater discharge pipe, the end of which is provided with a direct discharge quick connector. The water outlet of the vacuum multi-stage cascade water purification device is also connected to a water purification pipe, which is in communication with the meltwater discharge pipe. The spray-type rapid ice-melting water-supplying device is also connected to a hot water boiler for providing hot water for spraying ice-melting. The station solves the problem of water scarcity for domestic use in high-altitude cold regions, has good environmental adaptability, and is highly practical.

The present application relates to a kind of integrated joint deployment method of pan-basin water network system based on subsequent water source water supply. Including analysis is included in pan-basin water network system water transfer project and water supply project, construct integrated water network system;Pan-basin supply-demand relationship analysis is carried out in layers and grades, according to the composition and positional relationship of the pan-basin water network system Direct object and indirect object of subsequent water source water supply object are determined, and the water supply amount of each water supply object is determined;Pan-basin water network system integrated joint deployment model of subsequent water source water supply is constructed, and target function and constraint condition are set in layers and grades;Layered and graded scheduling rule system is formulated, and scheduling rules are formulated respectively;The pan-basin water network system integrated joint deployment model is optimized and solved based on the scheduling rule system, and the pan-basin water network system integrated joint deployment scheme is obtained.The present application realizes the further improvement of water resource shortage condition, and water resources are coordinated in a larger range and higher level pan-basin.

The utility model relates to the technical field of water tanks, and discloses a building water tank convenient for observing water level, which comprises a shell, the top end of the shell is fixedly connected with a fixed shell, the rear end of the fixed shell is fixedly connected with a stable shell, the left end of the fixed shell is fixedly connected with a hydraulic rod, and the inside of the fixed shell is fixedly connected with a fixed filter plate. And the output end of the hydraulic rod is fixedly connected with a movable filter plate, the interior of the fixed shell is fixedly connected with a stable filter plate, and the interior of the fixed shell is slidably connected with a filter residue collecting box. According to the utility model, the movable filter plate is attached to the hole of the fixed filter plate, and rainwater flows into the fixed shell from the fixed filter plate and the movable filter plate, so that the rainwater can be conveniently collected, an additional water source can be provided by collecting the rainwater, and the dependence on limited tap water resources is reduced; the method is particularly important for areas which face water resource shortage or need to limit tap water consumption.

The invention discloses a modified photo-thermal evaporator and a preparation method and application thereof, and belongs to the technical field of solar photo-thermal conversion and advanced manufacturing. A layer of aluminum oxide thin film of a grass-shaped structure is accurately deposited on the surface of the evaporator through an ALD technology, the hydrophilicity, the light absorption rate and the evaporation efficiency of the evaporator are remarkably improved through the thin film, and the service life of the evaporator is prolonged. And the negative influence of salt crystallization on the performance of the evaporator is effectively reduced. The preparation process is simple, low in cost, environment-friendly and pollution-free, large-scale application is expected to be realized, and a brand-new technical path is provided for solving the problem of global water resource shortage.

This paper discloses a method for predicting supercooled water content in clouds based on deep learning and spatiotemporal data. The method involves acquiring multi-channel satellite radiation transmission data and performing channel screening and feature extraction, acquiring radar reflectivity data and performing data interpolation and feature extraction, acquiring conventional meteorological data from ground-based automatic weather stations and performing feature extraction, fusing these features using a multi-head attention mechanism to generate fused features, and establishing a deep learning neural network model to predict supercooled water content in clouds for future time periods. This method enables more comprehensive and accurate prediction of supercooled water content and distribution in clouds, and has important scientific and practical significance for alleviating water resource shortages, improving the ecological environment, and ensuring economic security at low altitudes.

The present invention discloses a method for identifying key paths and intermediate nodes of implicit water shortage risk transmission based on the betweenness centrality algorithm, which relates to the field of water resources management. The method includes obtaining the water shortage probability of each region, and calculating the water shortage risk of each department in each region based on the water resource dependence of each department in each region combined with the water shortage probability of each region; constructing an implicit water shortage risk transfer matrix based on the water shortage risk of each department and a multi-regional input-output model; identifying the key transmission paths of implicit water shortage risk based on structural path analysis and the implicit water shortage risk transfer matrix, and constructing an implicit water shortage risk transmission network; identifying key intermediate nodes in the implicit water shortage risk transmission network based on the betweenness centrality algorithm. The present invention can identify all key transmission paths and intermediate nodes of implicit water shortage risk propagation in the supply chain, thereby enhancing the resilience of the entire trade network in coping with water shortage.