An ecological security scenario construction and visualization method based on element linkage

Abstract

The application provides an ecological safety scenario construction and visualization method based on element linkage, comprising: constructing an ecological safety index library, including an index directory library, an index information library and an index database; constructing an ecological safety monitoring model library, including an index monitoring model and a cascade monitoring model; constructing an ecological safety event library, extracting information such as time, place, person and emotion based on event extraction; constructing an ecological safety situation plotting library, plotting situation coordinates, situation trajectories and situation areas; constructing an ecological safety scenario based on index, model, event and plotting situation elements, displaying the results of element linkage in a time axis aggregation mode, and displaying scenario visualization in different time granularity switching modes. The application constructs a scenario through various situation elements such as index, model, event and situation, and visualizes the scenario from multiple elements, multiple perspectives, multiple levels and multiple dimensions.

Description

Technical Field

[0001] The present invention relates to a scenario construction and visualization method, in particular to an ecological security scenario construction and visualization method based on element linkage. Background Art

[0002] Ecological security refers to a country's ability to maintain a relatively intact, unthreatened ecosystem that supports its survival and development, as well as its ability to address major ecological challenges, both internally and externally. Ecological security is a fundamental condition for human survival and development. Humans and the ecological environment are inextricably linked, and a stable and suitable ecological environment is the fundamental guarantee for human survival and socioeconomic development. In recent decades, while humanity has enjoyed the material and spiritual wealth created, it has also accumulated numerous ecological risks through long-term, irrational exploitation of resources and the environment. Currently, threats to my country's ecological security include: excessive compression of natural ecological space, significant desertification, land degradation, and soil erosion, severe water shortages, challenges to biodiversity, deteriorating urban and rural living environments, and climate change posing new challenges to fragile ecosystems. If these ecological security issues are not addressed, they will lead to systemic ecological problems and crises, becoming a major obstacle to sustainable economic development and social stability.

[0003] Ecological security research in the natural sciences primarily focuses on the construction of ecological security indicator systems and the evaluation of ecological security model indices. Ecological security research in the social sciences primarily focuses on the role of ecological security in overall national security and the development of ecological security within the context of ecological civilization. The construction and visualization of ecological security scenarios are systemic concepts. The construction of ecological security indicator systems and the evaluation of ecological security model indices can only describe ecological scenarios based on a single indicator element, lacking a comprehensive understanding of the temporal and spatial dimensions of ecological security. Summary of the Invention

[0004] Purpose of the invention: The technical problem to be solved by the present invention is to provide an ecological security scenario construction and visualization method based on factor linkage in response to the shortcomings of the existing technology.

[0005] In order to solve the above technical problems, the present invention discloses an ecological security scenario construction and visualization method based on element linkage, comprising the following steps:

[0006] Step 1: Build an ecological security indicator library, including: an ecological security indicator catalog library, an ecological security indicator information library, and an ecological security indicator database;

[0007] The fields in the ecological security indicator catalog library include: indicator ID, name, serial number and parent node;

[0008] The fields in the ecological security indicator information database include: name, description, source, unit and region;

[0009] The fields in the ecological security index database include: time, granularity and value;

[0010] The indicators in the ecological security index library include: per capita pollution emissions, pollution emissions per unit GDP, proportion of built-up areas, drought area, flood area, economic losses, pest and disease and rodent infestation area, degree of disaster, loss rate, wind erosion rate, soil salinity, vegetation plus soil coverage, river sedimentation, evapotranspiration, carbon sequestration capacity, water conservation, flood storage, air purification, water purification, wind and sand control, soil conservation and the richness of endangered species.

[0011] Step 2: Build an ecological security monitoring model library, including indicator monitoring models and cascade monitoring models; set alarm types, including numerical alarms and fluctuation alarms; generate alarm details based on the set threshold conditions; specifically, the following steps are included:

[0012] Step 2-1: Construct an ecological security indicator monitoring model. Select key monitoring indicators from the ecological security indicator database, including: per capita pollution emissions, pollution emissions per unit of GDP, drought-affected area, flood-affected area, vegetation and soil cover, and endangered species richness; and establish an indicator monitoring model for each key monitoring indicator.

[0013] Step 2-2: Set the numerical alarm and fluctuation alarm conditions for each indicator monitoring model, including: alarm type, alarm relationship, alarm threshold, alarm level and time range;

[0014] Step 2-3: According to the set value alarm and fluctuation alarm conditions, when the value of the key monitoring indicator or the fluctuation range of the value exceeds the set threshold, the corresponding alarm details are generated;

[0015] Steps 2-4: Construct an ecological security cascade monitoring model, dividing the ecological security indicator database into three levels. Level 1 indicators include: ecological pollution, ecological disasters, ecological destruction, and ecological protection and service trade-offs; level 2 indicators include: industrial pollution, urbanization pollution, climate disasters, vegetation disasters, biological invasions, ecological and environmental problems, response capacity, institutional development, ecosystem services, and biodiversity protection; and level 3 indicators include: pollutant emissions, waste discharge, urban land, droughts, waterlogging, vegetation fires, vegetation pests and diseases, invasive species, soil erosion, desertification, salinization, rocky desertification, river and lake siltation, protected area construction, infrastructure, economic conditions, social culture, institutional integrity, climate regulation, hydrological regulation, purification function, conservation function, and biodiversity.

[0016] Steps 2-5: Based on the scores and weights of each level of indicators, calculate the Ecological Security Cascade Monitoring Model Index using the weighted sum method. The specific methods include:

[0017] Step 2-5-1: normalize each level of indicators. The specific method is as follows:

[0018] The indicator is normalized according to the normalization formula, and the normalized value r of the indicator is mapped to [0,1] as follows:

[0019]

[0020] Among them, max(x) and min(x) represent the maximum and minimum values ​​of the indicator x respectively.

[0021] Step 2-5-2: Calculate the Ecological Security Cascade Monitoring Model Index. The specific method is as follows:

[0022]

[0023] Among them, M is the ecological security cascade monitoring model index, r i represents the normalized score of the i-th indicator, w i represents the weight of the i-th indicator.

[0024] Steps 2-6: Set numerical alarm and fluctuation alarm conditions for the ecological security cascade monitoring model, including: alarm type, alarm relationship, alarm threshold, alarm level, and time range;

[0025] Step 2-7: According to the set numerical alarm and fluctuation alarm conditions, when the ecological security cascade monitoring model index or the fluctuation range of the index exceeds the set threshold, corresponding alarm details are generated.

[0026] Step 3: Build an ecological security event database. Based on ecological security events, use extraction, entity recognition, and sentiment judgment methods to extract the time, location, people, and sentiment information of the events.

[0027] The construction of the ecological security event database includes the following steps:

[0028] Step 3-1: The first stage of processing is at the article level. First, the collected articles in the field of ecological security are divided into sentences, and entity recognition is performed on each sentence. The entity recognition results are used as the basis for sentence summaries;

[0029] Step 3-2: The second stage of processing is at the sentence level, filtering each potential key sentence. In this stage, sentence pattern filtering is first performed. After filtering, the sentence is segmented and the part of speech is marked.

[0030] Step 3-3: The third stage of processing is the change from sentence level to event level. Based on the above processing results, the template matching method is used to extract the elements of the event from the sentence, including: initiator, recipient, event type and event location;

[0031] The template matching method is to match the event to be extracted with the known pattern, including: constructing event trigger words, selecting candidate event sentences and constructing event patterns.

[0032] Steps 3-4: The fourth stage is the emotion extraction stage, which extracts the emotional description of the event in the article and determines the holder of the emotion;

[0033] Steps 3-5: The fifth stage is the event element encoding stage, which is to fill in the attributes of the extracted event elements.

[0034] Step 4: Build an ecological security situation mapping database and draw situation coordinates, situation trajectories, and situation areas;

[0035] The construction of the ecological security situation mapping database includes the following steps:

[0036] Step 4-1: Plot the pre-set key ecological security events, their evolution trends, and their impact ranges on a geographic information system (GIS) map, drawing situation coordinates, situation trajectories, and situation area information.

[0037] Step 4-2: Store the situation coordinates, situation trajectory, and situation area plotting information into corresponding databases respectively.

[0038] Step 5: Use the ecological indicators in the ecological security indicator library, the ecological models in the ecological security monitoring model library, the ecological events in the ecological security event library, and the situation plots in the ecological security situation plot library as scenario elements to construct ecological security scenarios. Use a timeline aggregation method to display the results of the linkage of various scenario elements. Switch the display of ecological security scenarios based on different time granularities to complete the construction and visualization of ecological security scenarios based on element linkage.

[0039] The specific steps include:

[0040] Step 5-1: Select preset indicators from the ecological security indicator library, select preset models from the ecological security model library, select preset events from the ecological security event library, and select preset situation plots from the ecological security situation plot library to construct ecological scenarios;

[0041] Step 5-2: Use the timeline scrolling mode to display the distribution and changes of the situational element information of indicators, models, events and situations at each moment;

[0042] Step 5-2: Switch to different time granularities and display the scenario element information at the time granularity of year, month or day on the time axis.

[0043] Beneficial effects:

[0044] The present invention is based on long-term tracking of the ecological security field, and the method has the following beneficial effects:

[0045] First, scenario construction includes multiple scenario elements such as indicators, models, events, and situations, and can conduct scenario analysis from multiple elements, multiple perspectives, multiple levels, and multiple dimensions;

[0046] Second, ecological security monitoring is based on two main lines: indicators and events. These two lines complement each other. Based on the early warning items in the ecological security indicator system, it is possible to identify risk items that may generate early warnings in events, providing a theoretical basis for evaluating ecological events. At the same time, the development trends of ecological events provide verification and supplementation for the effectiveness of the ecological security indicator system.

[0047] Third, scenario visualization is displayed through timeline aggregation and time granularity switching, which can show the evolution of ecological scenarios from the time and space dimensions. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, and the above and / or other advantages of the present invention will become more apparent.

[0049] Figure 1 It is a schematic diagram of the overall process of the present invention.

[0050] Figure 2 This is a schematic diagram of the ecological safety cascade monitoring model in the present invention. DETAILED DESCRIPTION

[0051] The principles of this invention are as follows: Scenarios are constructed through scenario elements such as indicators, models, events, and trends, and scenario visualization is achieved through the linkage of these elements. Based on these indicators, an ecological security risk assessment index system is constructed to provide a detailed description of the entire ecological security system. The theoretical description of system elements and the interactions between these elements is translated into specific evaluation indicators, achieving a quantitative description of the ecological security system and supporting subsequent measurement and evaluation research. Based on these events, numerous historical ecological event cases are collected and organized. By combining these historical case trends, key time points are identified and key indicators of interest are obtained. Through this constructed index system, the level of early warning of these events is further monitored and scenario elements are extracted. Based on the trends, scenario evolution is visualized from both temporal and spatial dimensions. These four elements complement each other, enabling analysis and presentation of scenarios from multiple elements, perspectives, levels, and dimensions.

[0052] like Figure 1 The figure shows a flow chart of the method for constructing and visualizing ecological security scenarios based on factor linkage in the present invention. The contents of the specific modules include:

[0053] Step 1: Build an ecological security indicator database, including an ecological security indicator catalog, an ecological security indicator information database, and an ecological security indicator database. The ecological security indicator catalog includes fields such as indicator ID, name, sequence number, and parent node; the ecological security indicator information database includes fields such as name, description, source, unit, and region; and the ecological security indicator database includes fields such as time, granularity, and value. Key indicators in the ecological security indicator database include per capita pollution emissions, pollution emissions per unit of GDP, proportion of built-up area, drought-affected area, flood-affected area, economic losses, pest and disease-infested area, degree of damage, erosion rate, wind erosion rate, soil salinity, vegetation and soil cover ratio, river sedimentation, evapotranspiration, carbon sequestration capacity, water conservation, flood storage, air purification, water purification, wind and sand control, soil conservation, and endangered species richness.

[0054] Step 2: Construct an ecological security monitoring model library, which includes the following steps:

[0055] Step 2-1: Construct an ecological security indicator monitoring model and select indicators such as per capita pollution emissions, pollution emissions per unit GDP, drought-affected area, flood-affected area, vegetation + soil cover rate, and endangered species richness from the ecological security indicator database as key monitoring indicators;

[0056] Step 2-2: Set value alarms and fluctuation alarms for each indicator monitoring model. The alarm conditions include alarm type, alarm relationship, alarm threshold, alarm level, time range, etc.

[0057] Step 2-3: According to the set value alarm and fluctuation alarm conditions, when the indicator value or the fluctuation range of the indicator value exceeds the set threshold, the corresponding alarm details are generated;

[0058] Steps 2-4: Construct an ecological security cascade monitoring model, such as Figure 2 As shown in Table 1, the first-level indicators include ecological pollution, ecological disasters, ecological destruction, ecological protection, and service trade-offs; the second-level indicators include industrial pollution, urbanization pollution, climate disasters, vegetation disasters, biological invasions, ecological and environmental problems, response capacity, system construction, ecosystem services, and biodiversity protection; the third-level indicators include pollutant emissions, waste emissions, urban land, droughts, waterlogging, vegetation fires, vegetation pests and diseases, invasive biological hazards, soil erosion, desertification, salinization, rocky desertification, river and lake siltation, protected area construction, infrastructure, economic conditions, social culture, institutional integrity, climate regulation, hydrological regulation, purification function, conservation function, and biodiversity, as shown in Table 1;

[0059] Steps 2-5: Calculate the cascade monitoring model index based on the scores and weights of each layer of indicators using the weighted sum method;

[0060] Normalize the underlying indicators according to the normalization formula and map the values ​​to [0,1]:

[0061]

[0062] max(x) and min(x) represent the maximum and minimum values ​​of the indicator respectively.

[0063] The indicators at each level are calculated using the weighted sum method, and the final score of the ecological security cascade monitoring model is obtained:

[0064]

[0065] r i represents the normalized score of the i-th indicator, w i represents the weight of the i-th indicator. M is the index of the ecological security cascade monitoring model.

[0066] Step 2-6: Set numerical alarms and fluctuation alarms for the cascade monitoring model. Alarm conditions include alarm type, alarm relationship, alarm threshold, alarm level, time range, etc.

[0067] Step 2-7: According to the set numerical alarm and fluctuation alarm conditions, when the model index or the fluctuation range of the model index exceeds the set threshold, corresponding alarm details are generated.

[0068] Table 1 Ecological security cascade monitoring model

[0069]

[0070] Step 3: Build an ecological security event database, which includes the following steps:

[0071] Step 3-1: The first stage of processing is at the chapter level. First, the article is divided into sentences and entity recognition is performed on each sentence. The entity recognition results can be used as the basis for sentence summaries. Then, the key sentences are extracted based on the TextRank algorithm. The calculation formula is as follows;

[0072]

[0073] Among them, WS(V i ) represents the weight of sentence i, In(V i ) represents the set of sentences preceding sentence i, Out(V j ) represents the set of sentences following sentence j, W ji Represents the similarity between two sentences, WS(V j) represents the weight of sentence j in the previous iteration, and d is the damping coefficient, generally set to 0.85. After calculating the weight of each sentence, sort them in descending order by weight, and select the top few as key sentences.

[0074] Step 3-2, the second stage of processing is at the sentence level. For each potential key sentence, it needs to be filtered. At this stage, sentence pattern filtering is first performed to filter out sentences that are obviously impossible to extract events, such as sentences containing interrogative or negative words, such as "whether", "can", "deny", "?", etc.; after filtering, some basic natural language processing work needs to be performed on the sentences, and the sentences are segmented and marked with parts of speech based on existing segmentation tools to support subsequent event extraction based on lexical and syntactic structures;

[0075] Step 3-3: The third stage of processing is the change from sentence level to event level. Based on the natural language processing results of the sentence, the template matching method is used to extract the initiator, recipient, event type, and event location from the sentence;

[0076] The core idea of ​​the template matching algorithm is to use various pattern matching algorithms to match the event to be extracted with the known pattern, including several key steps such as event trigger word construction, candidate event sentence selection, and event pattern construction.

[0077] 1) Event trigger word construction

[0078] Common event trigger words in the field of ecological security are as follows:

[0079] Event Type Event trigger words ecological pollution Pollution, waste, emissions ecological disasters dry up, dry up, flood, trigger ecological damage Destruction, deterioration, degradation, extinction, indiscriminate hunting, deforestation, and clearing of forests for farmland ecological protection Governance, improvement, purification, and beautification

[0080] 2) Selection of candidate event sentences

[0081] A sentence describing an event element must contain at least one event trigger word. These sentences are called candidate event sentences. A sentence describing an event in a text typically consists of a trigger word and any number of event arguments. For example, the forest fire in Liangshan, Sichuan, in March 2020.

[0082] 3) Construction of event pattern

[0083] A pattern library is constructed for each category of events, and the event elements in the event instance are replaced with special symbols to generate the initial pattern, such as XXX (time) YYY (place) causes ZZZ (drought / flood / fire).

[0084] Steps 3-4: The fourth stage is the sentiment extraction stage. Based on the positive word dictionary, negative word dictionary, negation word dictionary, and degree adverb dictionary, the sentiment description of the event in the article is extracted and the holder of the sentiment is determined;

[0085] Steps 3-5, the fifth stage is the event element coding stage, which fills the attributes of the extracted event elements (sponsor, recipient, place of occurrence, time) and converts them according to the character dictionary table and place name dictionary table.

[0086] Step 4: Build an ecological security situation mapping database, which includes the following steps:

[0087] Step 4-1: Plot key ecological security-related events, their evolutionary trends, and their impact areas on a GIS (Geographic Information Systems) map, drawing situation coordinates (points), situation trajectories (lines), and situation areas (surfaces);

[0088] Step 4-2: Build an ecological security situation mapping library and store situation coordinates, situation trajectory, and situation area mapping information in corresponding databases.

[0089] Step 5: Ecological security scenario construction and visualization, including the following steps:

[0090] Step 5-1: Select relevant indicators from the ecological security indicator library, including per capita pollution emissions, pollution emissions per unit GDP, drought-affected area, flood-affected area, vegetation + soil cover, and endangered species richness; select relevant models from the ecological security model library, including the ecological security cascade detection model; select relevant events from the ecological security event library; and select relevant situation plots from the ecological security situation plot library to construct ecological scenarios.

[0091] Step 5-2: Use the timeline scrolling mode to display the distribution and changes of indicators, models, events, situations and other information at each moment;

[0092] Step 5-2: Switch to different time granularities and display the scenario element information of time granularities such as year, month, and day on the time axis.

[0093] In a specific implementation, this application provides a computer storage medium and a corresponding data processing unit. The computer storage medium is capable of storing a computer program that, when executed by the data processing unit, executes the invention of the method for constructing and visualizing ecological security scenarios based on factor linkage provided by the present invention, as well as some or all of the steps in each embodiment. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

[0094] Those skilled in the art can clearly understand that the technical solutions in the embodiments of the present invention can be implemented by means of computer programs and their corresponding general hardware platforms. Based on this understanding, the technical solutions in the embodiments of the present invention, in essence or in other words, the part that contributes to the prior art, can be embodied in the form of a computer program, i.e., a software product. The computer program software product can be stored in a storage medium and includes a number of instructions for enabling a device including a data processing unit (which can be a personal computer, server, single-chip microcomputer, MUU or network device, etc.) to execute the methods described in various embodiments of the present invention or certain parts of the embodiments.

[0095] This invention provides a concept and method for constructing and visualizing ecological security scenarios based on factor linkage. There are numerous methods and approaches for implementing this technical solution. The foregoing description is merely a preferred embodiment of the invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the invention, and such improvements and modifications are also within the scope of protection of the invention. Any components not specified in this embodiment may be implemented using existing technologies.

Claims

1. A method for constructing and visualizing ecological security scenarios based on factor linkage, characterized in that: The steps include: Step 1: Build an ecological security indicator library, including: an ecological security indicator catalog library, an ecological security indicator information library, and an ecological security indicator database; Step 2: Build an ecological security monitoring model library, including indicator monitoring models and cascade monitoring models; set alarm types, including numerical alarms and fluctuation alarms; and generate alarm details based on the set threshold conditions. Step 3: Build an ecological security event database. Based on ecological security events, use extraction, entity recognition, and sentiment judgment methods to extract the time, location, people, and sentiment information of the events. Step 4: Build an ecological security situation mapping database and draw situation coordinates, situation trajectories, and situation areas; Step 5: Use the ecological indicators in the ecological security indicator library, the ecological models in the ecological security monitoring model library, the ecological events in the ecological security event library, and the situation plots in the ecological security situation plot library as scenario elements to construct ecological security scenarios. Use a timeline aggregation method to display the results of the linkage of various scenario elements. Switch the display of ecological security scenarios based on different time granularities to complete the construction and visualization of ecological security scenarios based on element linkage.

2. The method for constructing and visualizing ecological security scenarios based on factor linkage according to claim 1 is characterized in that: The fields in the ecological security indicator catalog library described in step 1 include: indicator ID, name, sequence number and parent node; The fields in the ecological security indicator information database include: name, description, source, unit and region; The fields in the ecological security index database include: time, granularity and value; The indicators in the ecological security index library include: per capita pollution emissions, pollution emissions per unit GDP, proportion of built-up areas, drought area, flood area, economic losses, pest and disease and rodent infestation area, degree of disaster, loss rate, wind erosion rate, soil salinity, vegetation plus soil coverage, river sedimentation, evapotranspiration, carbon sequestration capacity, water conservation, flood storage, air purification, water purification, wind and sand control, soil conservation and the richness of endangered species.

3. The method for constructing and visualizing ecological security scenarios based on factor linkage according to claim 2 is characterized in that: Step 2 specifically includes the following steps: Step 2-1: Construct an ecological security indicator monitoring model. Select key monitoring indicators from the ecological security indicator database, including: per capita pollution emissions, pollution emissions per unit of GDP, drought-affected area, flood-affected area, vegetation and soil cover, and endangered species richness; and establish an indicator monitoring model for each key monitoring indicator. Step 2-2: Set the numerical alarm and fluctuation alarm conditions for each indicator monitoring model, including: alarm type, alarm relationship, alarm threshold, alarm level and time range; Step 2-3: According to the set value alarm and fluctuation alarm conditions, when the value of the key monitoring indicator or the fluctuation range of the value exceeds the set threshold, the corresponding alarm details are generated; Steps 2-4: Construct an ecological security cascade monitoring model, dividing the ecological security indicator database into three levels. Level 1 indicators include: ecological pollution, ecological disasters, ecological destruction, and ecological protection and service trade-offs; level 2 indicators include: industrial pollution, urbanization pollution, climate disasters, vegetation disasters, biological invasions, ecological and environmental problems, response capacity, institutional development, ecosystem services, and biodiversity protection; and level 3 indicators include: pollutant emissions, waste discharge, urban land, droughts, waterlogging, vegetation fires, vegetation pests and diseases, invasive species, soil erosion, desertification, salinization, rocky desertification, river and lake siltation, protected area construction, infrastructure, economic conditions, social culture, institutional integrity, climate regulation, hydrological regulation, purification function, conservation function, and biodiversity. Steps 2-5: Calculate the Ecological Security Cascade Monitoring Model Index using the weighted sum method based on the scores and weights of each level of indicators; Steps 2-6: Set numerical alarm and fluctuation alarm conditions for the ecological security cascade monitoring model, including: alarm type, alarm relationship, alarm threshold, alarm level, and time range; Step 2-7: According to the set numerical alarm and fluctuation alarm conditions, when the ecological security cascade monitoring model index or the fluctuation range of the index exceeds the set threshold, corresponding alarm details are generated.

4. The method for constructing and visualizing ecological security scenarios based on factor linkage according to claim 3 is characterized in that: The specific method for calculating the ecological security cascade monitoring model index using the weighted sum method described in steps 2-5 includes: Step 2-5-1, normalizing each level of indicators; Step 2-5-2, calculate the ecological security cascade monitoring model index.

5. The method for constructing and visualizing ecological security scenarios based on factor linkage according to claim 4 is characterized in that: Step 2-5-1 is to normalize each level of indicators. The specific method is as follows: The indicator is normalized according to the normalization formula, and the normalized value r of the indicator is mapped to [0,1] as follows: Among them, max(x) and min(x) represent the maximum and minimum values ​​of the indicator x respectively.

6. The method for constructing and visualizing ecological security scenarios based on factor linkage according to claim 5 is characterized in that: The specific method for calculating the ecological security cascade monitoring model index described in step 2-5-2 is as follows: Among them, M is the ecological security cascade monitoring model index, r i represents the normalized score of the i-th indicator, w i represents the weight of the i-th indicator.

7. The method for constructing and visualizing ecological security scenarios based on factor linkage according to claim 6 is characterized in that: The construction of the ecological security event database described in step 3 includes the following steps: Step 3-1: The first stage of processing is at the article level. First, the collected articles in the field of ecological security are divided into sentences, and entity recognition is performed on each sentence. The entity recognition results are used as the basis for sentence summaries; Step 3-2: The second stage of processing is at the sentence level, filtering each potential key sentence. In this stage, sentence pattern filtering is first performed. After filtering, the sentence is segmented and the part of speech is marked. Step 3-3: The third stage of processing is the change from sentence level to event level. Based on the above processing results, the template matching method is used to extract the elements of the event from the sentence, including: initiator, recipient, event type and event location; Steps 3-4: The fourth stage is the emotion extraction stage, which extracts the emotional description of the event in the article and determines the holder of the emotion; Steps 3-5: The fifth stage is the event element encoding stage, which is to fill in the attributes of the extracted event elements.

8. The method for constructing and visualizing ecological security scenarios based on factor linkage according to claim 7 is characterized in that: The template matching method described in step 3-3 is to match the event to be extracted with the known pattern, including: constructing event trigger words, selecting candidate event sentences and constructing event patterns.

9. The method for constructing and visualizing ecological security scenarios based on factor linkage according to claim 8 is characterized in that: The construction of the ecological security situation mapping database described in step 4 includes the following steps: Step 4-1: Plot the pre-set key ecological security events, their evolution trends, and their impact ranges on a geographic information system (GIS) map, drawing situation coordinates, situation trajectories, and situation area information. Step 4-2: Store the situation coordinates, situation trajectory, and situation area plotting information into corresponding databases respectively.

10. The method for constructing and visualizing ecological security scenarios based on factor linkage according to claim 9, characterized in that: Step 5 specifically includes the following steps: Step 5-1: Select preset indicators from the ecological security indicator library, select preset models from the ecological security model library, select preset events from the ecological security event library, and select preset situation plots from the ecological security situation plot library to construct ecological scenarios; Step 5-2: Use the timeline scrolling mode to display the distribution and changes of the situational element information of indicators, models, events and situations at each moment; Step 5-2: Switch to different time granularities to display scenario element information at the time granularity of year, month, or day on the time axis.

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