Schistosomiasis transmission risk grading-based snail suppression ecological revetment design method and system, computer equipment and medium

Abstract

The invention discloses a snail suppression ecological revetment design method and system based on schistosomiasis transmission risk grading, computer equipment and a storage medium. The design method comprises the steps that river reach division is carried out in the flow direction of a river channel, and ecological environment data of each river reach under different hydro-meteorological conditions are obtained; based on the ecological environment data, calculating a comprehensive index of the schistosomiasis transmission risk of each river reach under different hydro-meteorological conditions; dividing each river reach into a low-risk river reach or a high-risk river reach according to the comprehensive index; and matching river bank construction schemes corresponding to the risky river reaches of different grades. According to the technical scheme, accurate recognition of the oncomelania breeding place is achieved, the river reach is divided into the high-risk river reach and the low-risk river reach, then key prevention and control measures are adopted for the high-risk river reach, and relatively mild ecological protection measures are adopted for the low-risk river reach. In this way, precise prevention and control of different risk areas are achieved, excessive intervention on an ecological system is reduced, and collaborative improvement of the snail suppression efficiency and ecological benefits is achieved.

Description

Technical Field

[0001] This application relates to the field of water conservancy and schistosomiasis control technology, and in particular to a snail-suppressing ecological bank protection design method, system, computer equipment and medium based on the risk classification of schistosomiasis transmission. Background Technology

[0002] Schistosomiasis is a serious parasitic disease caused by the parasite Schistosoma infecting humans. It can lead to irreversible damage such as hepatosplenomegaly, portal hypertension, and developmental disorders in children. The World Health Organization lists it as the second largest source of economic burden from tropical diseases globally. Oncomelania japonica is the only intermediate host of Schistosoma, and controlling Oncomelania japonica is the most effective way to control schistosomiasis.

[0003] Existing water conservancy projects primarily control the spread of Oncomelania snails and schistosomiasis through two main methods: First, by altering the riverbank and sandbar environment through projects such as hardening slopes and excavating isolation ditches, environmental factors like soil moisture content, vegetation cover, and water level are changed, thereby interfering with the breeding and reproduction of Oncomelania snails. Second, by influencing the migration and spread of Oncomelania snails in water through projects such as culverts and snail-sedimentation ponds, the spread of Oncomelania snails can be prevented. However, while current water conservancy measures can reduce the snails' living space in the short term, their rigid engineering structures and one-way intervention models disrupt the integrity of the riparian ecosystem. In practice, they often fall into the paradox of "using ecological destruction to curb pathogen transmission," weakening the water body's self-purification capacity and biodiversity, and causing unsustainable control effectiveness due to delayed environmental response.

[0004] Therefore, how to achieve the organic unity of accurate identification and ecological control of snail breeding grounds, and thus synergistic improvement of snail suppression effectiveness and ecological benefits, is an urgent problem to be solved. Summary of the Invention

[0005] This application provides a snail-suppressing ecological revetment design method, system, computer equipment, and medium based on schistosomiasis transmission risk classification, aiming to solve the problem that the snail-suppressing effectiveness and ecological benefits cannot be synergistically improved in the existing technology.

[0006] To achieve the above objectives, this application proposes a snail-suppressing ecological revetment design method based on schistosomiasis transmission risk classification. This design method includes: The river is divided into sections along its flow direction, and ecological environment data for each section under different hydrological and meteorological conditions are obtained. The river is divided into independent sections on both banks, and the ecological environment data includes the maximum flow rate of the river section, the cross-sectional area of ​​the river section, the distance of the river from the settlement, the vegetation coverage, the soil moisture content, and the average density of Oncomelania snails. Based on the aforementioned ecological and environmental data, a comprehensive index of the risk of schistosomiasis transmission in each river section under different hydrological and meteorological conditions was calculated. Based on the comprehensive index, each river segment is divided into a low-risk river segment or a high-risk river segment; Match riverbank construction plans with different risk levels for different river sections.

[0007] In some embodiments, the process of dividing the river into river sections along the river's flow direction and obtaining ecological and environmental data for each river section under different hydrological and meteorological conditions includes: The river channel is divided into sections based on the initial data generated from the ecological and environmental characteristics collected by on-site survey equipment. Based on the Oncomelania snail diffusion model and combined with the initial data, the ecological environment data of each river section under different hydrological and meteorological conditions are simulated and predicted.

[0008] In some embodiments, based on the ecological and environmental data, a comprehensive index of the risk of schistosomiasis transmission in each river section under different hydrological and meteorological conditions is calculated. The formula for calculating the comprehensive index is:

[0009] In the formula, for each river segment, α is the hydrological weight; Qmax is the maximum flow of the river segment; A is the cross-sectional area of ​​the river segment; β is the habitat weight; γ is the resident exposure risk weight; V is the vegetation coverage (%); λ1 is the vegetation weight; W is the soil moisture content (%); λ2 is the soil moisture weight; S is the average density of Oncomelania snails, in units of snails / m²; λ3 is the Oncomelania snail density weight; γ is the exposure risk weight; and D is the distance from the river channel to the residential area, in units of m.

[0010] In some embodiments, dividing river sections into low-risk and high-risk sections based on the comprehensive schistosomiasis transmission risk index includes: Set a reference value for the comprehensive index; The comprehensive index of each river section under different hydrological and meteorological conditions is compared with the reference value, and the river section is determined to be a low-risk or high-risk river section based on the comparison results.

[0011] In some embodiments, comparing the comprehensive index of each river segment under different hydrological and meteorological conditions with the reference value, and determining whether a river segment is a low-risk or high-risk river segment based on the comparison results includes: At least the comprehensive index of each river section under the dry season, normal water season and high water season should be compared with the reference value; The river section is classified as a high-risk river section when the comprehensive index in any period is not lower than the reference value, and the river section is classified as a low-risk area when the comprehensive index in all periods is lower than the reference value.

[0012] In some embodiments, matching riverbank construction schemes to river sections of different risk levels further includes: A scheme library is established in advance; the scheme library includes a first riverbank construction scheme and a second riverbank construction scheme. The first riverbank construction scheme is to plant native plants on the riverbank; the second riverbank construction scheme is to establish a graded prevention and control zone on the riverbank based on the target elevation and snail distribution characteristics of the river section. For low-risk river sections, a first-bank construction plan is used, and for high-risk river sections, a second-bank construction plan is used.

[0013] In some embodiments, before matching a first riverbank construction plan to a low-risk river section and a second riverbank construction plan to a high-risk river section, the following steps are included: For high-risk river sections, at least the elevation-screw distribution data should be obtained during the dry season, normal water season, and wet season. Based on the elevation-helix distribution data for each period, the target elevation-helix distribution characteristics are determined through weighted superposition calculation.

[0014] This application also proposes a snail-suppressing ecological revetment design system based on schistosomiasis transmission risk classification. The system includes field survey equipment and computer equipment, wherein the computer equipment includes: The data acquisition module is used to divide the river into sections along the river's flow direction and acquire ecological and environmental data for each section under different hydrological and meteorological conditions. The index calculation module is used to calculate the comprehensive index of schistosomiasis transmission risk for each river section under different hydrological and meteorological conditions based on the ecological and environmental data. The risk classification module is used to classify each river segment into a low-risk or high-risk river segment based on the comprehensive schistosomiasis transmission risk index. The scheme matching module is used to match riverbank construction schemes with river sections of different risk levels.

[0015] This application also proposes a computer device including a processor and a memory, the memory being used to store a computer program, which, when executed by the processor, implements the snail-suppressing ecological revetment design method based on schistosomiasis transmission risk classification as described above.

[0016] This application also proposes a computer-readable storage medium storing computer instructions for causing a computer device to execute the snail-suppressing ecological revetment design method based on schistosomiasis transmission risk classification as described above.

[0017] This application proposes a design method, system, computer equipment, and storage medium for snail-suppressing ecological revetment based on schistosomiasis transmission risk classification. The design method includes: dividing the river into sections along the river's flow direction and acquiring ecological and environmental data for each section under different hydrological and meteorological conditions; calculating a comprehensive index of schistosomiasis transmission risk for each section under different hydrological and meteorological conditions based on the ecological and environmental data; classifying each river section into low-risk or high-risk sections according to the comprehensive index; and matching corresponding riverbank construction schemes to river sections of different risk levels. In this application's technical solution, by accurately identifying snail breeding grounds, river sections are divided into high-risk and low-risk sections. Targeted prevention and control measures are then implemented for high-risk sections, while relatively mild ecological protection measures are adopted for low-risk sections. This allows for precise prevention and control in different risk areas, reducing excessive intervention in the ecosystem and achieving a synergistic improvement in snail-suppressing effectiveness and ecological benefits. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a flowchart illustrating an embodiment of the snail-suppressing ecological revetment design method based on schistosomiasis transmission risk classification in this application. Figure 2 This is a schematic diagram of the structure of an ecological bank protection system established for a second riverbank construction scheme according to an embodiment of this application; Figure 3 This is a schematic diagram of the structure of a snail-suppressing ecological bank protection engineering design system according to an embodiment of this application; Figure 4 This is a schematic diagram of the hardware structure of a computer device according to an embodiment of this application. Detailed Implementation

[0018] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0019] It should be noted that, unless otherwise stated or limited, all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0020] It should also be noted that, unless otherwise stated or limited, when an element is referred to as "fixed to" or "set on" another element, it may be directly on the other element or there may be an intervening element present. When an element is referred to as "connected to" another element, it may be directly connected to the other element or there may be an intervening element present.

[0021] Furthermore, unless otherwise stated or limited, the descriptions involving "first," "second," etc., in this application are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0022] See Figure 1 As shown, this application proposes a snail-suppressing ecological revetment design method based on schistosomiasis transmission risk classification. This design method includes: Step S10: Divide the river into sections along the river's flow direction and obtain ecological and environmental data for each section under different hydrological and meteorological conditions.

[0023] It is understandable that different river sections have different ecological environments due to factors such as topography and water flow. Dividing the river into sections along the direction of the river and dividing the river into independent sections on both banks can accurately locate the characteristics of different river sections and help to conduct in-depth research on the actual situation of each river section.

[0024] The process involved acquiring multi-dimensional ecological and environmental data, including hydrological data such as maximum flow rate and cross-sectional area of ​​the river section, spatial data such as distance from the river to residential areas, ecological data such as vegetation cover and soil moisture content, and the crucial data on the average density of Oncomelania snails. This comprehensive data reflects the ecological and environmental conditions of each river section, providing a solid foundation for subsequent risk assessments and construction plan development. For example, the maximum flow rate and cross-sectional area of ​​the river section reflect the hydraulic characteristics of the river and have a certain impact on the migration and spread of Oncomelania snails; the distance from the river to residential areas relates to the potential threat of schistosomiasis transmission to human health; and vegetation cover and soil moisture content are closely related to the survival environment of Oncomelania snails. By acquiring this data, a more accurate understanding of the actual situation of each river section can be obtained, providing a scientific basis for subsequent steps.

[0025] Specifically, ecological and environmental characteristics can be collected through on-site survey equipment, and river sections can be divided based on the initial data generated from these characteristics. This on-site survey equipment can directly acquire actual data about the river and its surrounding environment, reflecting the true ecological and environmental characteristics of the river. Dividing river sections based on this initial data ensures that the division results highly match the actual ecological condition of the river. For example, using a BeiDou-guided drone equipped with lidar, a hyperspectral imaging module, and a soil moisture sensor can acquire data on the three-dimensional topography, vegetation cover, and soil moisture content of the river, accurately identifying the ecological differences between different river sections.

[0026] However, the initial data obtained from on-site surveys has certain limitations and cannot cover all hydrological and meteorological conditions. Therefore, simulation and prediction are performed based on the Oncomelania snail dispersal model combined with the initial data to expand the data acquisition dimensions and obtain ecological and environmental data for each river section under different hydrological and meteorological conditions. Specifically, the Oncomelania snail dispersal model can simulate the dispersal patterns of Oncomelania snails under different environmental conditions and, combined with the initial data, simulate and predict the ecological and environmental data of each river section under different hydrological and meteorological conditions, thereby predicting the changing trends of schistosomiasis transmission in advance. For example, by simulating the dispersal of Oncomelania snails under different rainfall and water level changes, changes in schistosomiasis transmission in each river section can be predicted in advance, providing more comprehensive data support for risk assessment. This Oncomelania snail dispersal model is based on the existing technology of calculating the migration trajectory of Oncomelania snails with floating debris using the Lagrange method to predict the dispersal characteristics of Oncomelania snails.

[0027] Step S20: Based on ecological and environmental data, calculate the comprehensive index of schistosomiasis transmission risk in each river section under different hydrological and meteorological conditions.

[0028] This step aims to comprehensively consider the impact of various ecological and environmental factors on the risk of schistosomiasis transmission. By calculating a comprehensive index, the risk status of each river section can be assessed more comprehensively and accurately. Different factors have different mechanisms of action and degrees of influence on schistosomiasis transmission; the calculation of the comprehensive index can quantify and integrate these factors, avoiding the one-sidedness of assessments based on single factors.

[0029] For example, in river sections with high flow rates and low vegetation cover, Oncomelania snails are more likely to be washed away by the water flow, resulting in a relatively low risk of transmission. Conversely, in river sections with low flow rates, high vegetation cover, and suitable soil moisture content, Oncomelania snails are more likely to breed and reproduce, leading to a higher risk of transmission. A comprehensive index can take these factors into account to provide a more accurate risk assessment result.

[0030] The formula for calculating the composite index is as follows:

[0031] In the formula, for each river segment, α is the hydrological weight; Qmax is the maximum flow of the river segment; A is the cross-sectional area of ​​the river segment; β is the habitat weight; γ is the resident exposure risk weight; V is the vegetation coverage (%); λ1 is the vegetation weight; W is the soil moisture content (%); λ2 is the soil moisture weight; S is the average density of Oncomelania snails, in units of snails / m²; λ3 is the Oncomelania snail density weight; γ is the exposure risk weight; and D is the distance from the river channel to the residential area, in units of m.

[0032] Step S30: Based on the comprehensive index, each river segment is divided into a low-risk river segment or a high-risk river segment.

[0033] In this step, river sections are divided into low-risk and high-risk sections to clarify the key areas for prevention and control. High-risk river sections are high-risk areas for schistosomiasis transmission, such as sections with slow-flowing water, sparse vegetation, and moist soil suitable for Oncomelania snails, which require stricter and more effective prevention and control measures. Low-risk river sections, such as sections with rapid water flow, dense vegetation, and dry soil unsuitable for Oncomelania snails, can have their prevention and control efforts appropriately reduced to avoid excessive intervention.

[0034] The risk classification of river sections includes: Establish a reference value for the comprehensive index. It's understandable that the comprehensive index will differ across river sections due to variations in ecological environment and hydrological / meteorological conditions. By setting a reference value, the comprehensive index of each river section can be compared and evaluated within a unified framework, ensuring objectivity and consistency in risk classification. The reference value can serve as a "watershed," classifying river sections with a comprehensive index above this value as high-risk and those below as low-risk, thus avoiding inconsistencies in risk classification caused by subjective judgment.

[0035] Then, the comprehensive index of each river section under different hydrological and meteorological conditions is compared with the reference value. Based on the comparison results, the river section is determined to be a low-risk or high-risk section. This allows for precise risk classification of each river section. Different hydrological and meteorological conditions affect the ecological environment of the river section and the survival and reproduction of Oncomelania hupensis snails, thus leading to changes in the comprehensive index. By comparing these factors, the risk level of each river section under different conditions can be accurately determined.

[0036] Specifically, the comprehensive index of each river section under the dry season, normal season, and high season should be compared with the reference value. If the comprehensive index under any period is not lower than the reference value, the river section should be classified as a high-risk river section, and if the comprehensive index under all periods is lower than the reference value, the river section should be classified as a low-risk area. In this way, high-risk river sections can be accurately screened and omissions should be avoided.

[0037] Under a specific numerical setting, the reference value of the comprehensive index is set to 0.8. If the comprehensive index R of a river section is greater than or equal to 0.8 in all periods, the river section is classified as a high-risk river section; if the comprehensive index of a river section is less than 0.8 in all periods, it is classified as a low-risk river section, so as to ensure that the prevention and control measures are accurate and effective.

[0038] Step S40: Match the corresponding riverbank construction plan to the river sections with different risk levels.

[0039] In this step, matching corresponding riverbank construction plans to river sections with different risk levels can improve the prevention and control effect. For high-risk river sections, the construction plan can focus on directly inhibiting the breeding and spread of Oncomelania snails, while for low-risk river sections, the construction plan can focus on ecological protection and restoration, such as strengthening vegetation restoration and improving soil conditions, thereby enhancing the stability and self-regulation capacity of the ecosystem.

[0040] The process involves establishing a pre-defined scheme database, including construction schemes for the first and second riverbanks. The first scheme involves planting native vegetation on the riverbank, adapting to local climate and soil conditions. This effectively enhances the slope's resistance to erosion, reduces manual maintenance costs, and showcases a landscape that harmonizes with the local natural environment. The second scheme involves establishing tiered prevention and control zones on the riverbank based on the target elevation and snail distribution characteristics of the river section. This multi-layered, three-dimensional prevention and control system aims to effectively block the spread of Oncomelania snails and improve the effectiveness of snail control. Subsequently, the first scheme is applied to low-risk river sections, while the second scheme is applied to high-risk river sections.

[0041] It is worth noting that before matching the first riverbank construction plan to low-risk river sections and the second riverbank construction plan to high-risk river sections, the following steps are included: for high-risk river sections, at least the elevation-helix distribution data under the dry season, normal water season, and wet season are obtained; based on the elevation-helix distribution data for each period, the target elevation-helix distribution characteristics are determined through weighted superposition calculation. The formula for the weighted superposition calculation of each helix is:

[0042] Among them, W1, W2, and W3 represent the weighting of the spirals during the wet season, normal season, and dry season, respectively, and their specific weight values ​​can be assigned according to the proportion of the water season duration. W1 = G_wet season / 12, W2 = G_normal season / 12, W3 = G_dry season / 12, where G_wet season, G_normal season, and G_dry season are the durations of the wet season, normal season, and dry season in a year, respectively (in months). In this way, through precise weighting and data analysis, accurate target elevation-spiral distribution characteristics are obtained, and then scheme matching can be performed based on the elevation distribution of spirals above, spirals below, and dense spirals.

[0043] For details, please refer to Figure 2 The diagram shows the structure of the ecological bank protection system established by the second riverbank construction scheme. Based on the elevation-screw distribution characteristics of the river channel, the system consists of a shallow water inactivation zone 61, a mid-level modification zone 62, and a high-level safety zone 63 arranged sequentially in a direction 100 degrees away from the river channel on the riverbank.

[0044] The shallow water inactivation zone 61 is located between the lower spiral and dense spiral lines, and includes a sunken snail-blocking trench 611. The sunken design of the snail-blocking trench 611 forms a physical barrier, effectively blocking the migration path of Oncomelania snails. Typically, a certain depth of water accumulates within the snail-blocking trench 611. Since Oncomelania snails prefer moist environments but cannot live in deep water, the water depth prevents their survival after they enter the trench, achieving inactivation. The bottom elevation of the snail-blocking trench 611 is lower than the year-round low water level of the river channel 100, allowing for water infiltration from the river channel 100 to maintain a stable water level within the trench. Generally, the depth of the snail-blocking trench 611 ensures continuous flooding for more than 8 months, and the width of the trench 611 is between 0.5 and 5 meters. Furthermore, snail-killing modules 612 can be further installed within the snail-blocking trench 611, such as… Figure 1As shown, the molluscicide module 612 is a ceramic module for releasing molluscicides. Molluscicides typically contain chemical components toxic to Oncomelania snails, such as sodium pentachlorophenate and niclosamide. These chemicals can disrupt the physiological functions of Oncomelania snails, leading to their death. The ceramic materials, such as diatomaceous earth and cordierite, have a porosity of 63%–50% and a specific surface area >50 m² / g, thus achieving a high loading capacity of 0.5–1.2 g / cm³ for the molluscicide. This allows for further enhancement of the snail-disinfecting effect in the shallow water inactivation zone 61 using chemical methods. Furthermore, the molluscicide release cycle is no less than 180 days, ensuring that the molluscicide module 612 can continuously and stably release the molluscicide, guaranteeing a certain concentration of effective drug environment within the snail-blocking trench 611, thereby inhibiting the survival and reproduction of Oncomelania snails for a long period. Compared to frequent manual harvesting or chemical spraying, this significantly reduces labor costs and intensity. It is worth noting that the proper selection and use of molluscicides can reduce environmental pollution and impacts on non-target organisms, achieving more environmentally friendly snail control.

[0045] The intermediate layer modification zone 62 is located between the dense spiral line and the upper spiral line. The intermediate layer modification zone 62 includes a snail-free topsoil layer 621. The snail-free topsoil layer 621 involves removing the original contaminated soil layer containing snails or snail eggs and replacing it with clean topsoil free of snails and insect eggs. Through soil replacement, the breeding environment of Oncomelania snails is directly eliminated, thereby blocking the snail's reproductive chain. The thickness of the snail-free topsoil layer 621 is generally controlled at 63–60 cm to ensure no residual snails or insect eggs remain. Furthermore, a snail-proof geomembrane 612 is installed on the snail-free topsoil layer 621. The pore size of the snail-proof geomembrane 612 does not exceed 2 mm. On the one hand, because the pore size of the geomembrane is much smaller than the size of an adult Oncomelania snail (average field size 8–61 mm), it can directly prevent snails from burrowing into the soil layer; on the other hand, the geomembrane can reduce water infiltration, maintaining the snail-free topsoil layer 621 relatively dry (soil moisture ≤ 25%), thus disrupting the moist microenvironment required for Oncomelania snail survival. The snail-free topsoil layer 621 and the snail-proof geomembrane 612 are laid inclined towards the snail-blocking trench 611. The moderate slope accelerates surface runoff and prevents water from accumulating on the surface of the snail-free topsoil layer 621. The inclination angle is 61°–15°, and a drainage blind trench (not shown in the attached diagram) is also constructed within the snail-free topsoil layer 621. This drainage blind trench collects water from surface runoff and directs its discharge, further reducing soil moisture and drying the soil environment. This exposes the snails, causing them to dehydrate and die, thus inhibiting egg hatching.

[0046] A high-level safety zone 63 is located above the spiral-shaped area, and is planted with snail-inhibiting plants. It is understood that snails generally have low survival rates above the spiral-shaped area, but planting snail-inhibiting plants further enhances the control effect. In a specific implementation plan, the high-level safety zone 63 includes a hardened slope 631, a pedestrian walkway 632, and a green isolation belt 633, arranged sequentially in a direction 100 meters away from the river channel. The snail-inhibiting plants are planted within the green isolation belt 633. Thus, the high-level safety zone 63 further constructs the ultimate defense against snail spread through a dual strategy of physical isolation and ecological barriers, its spatial layout following the principle of "100 meters away from the river channel, with progressive buffering." Specifically, the hardened slope 631 can block the mechanical migration of snails, preventing vehicles / personnel from carrying snails into the safety zone; the pedestrian walkway 632 provides a safe passageway, avoiding direct contact with potentially contaminated areas; and the green isolation belt 633, planted with snail-inhibiting plants, inhibits snail spread through ecological competition. It is worth noting that the greenbelt 633 is designed to control Oncomelania snails under specific conditions. In the event of a flood, if the water level rises continuously and submerges the pedestrian walkway 632, the snail-suppressing plants in the greenbelt 633 will act as an ecological barrier. These snail-suppressing plants include Jatropha curcas, Pterocarya stenoptera, Oleander, Ginger turmeric, Calligonum mongolicum, Liriope muscari, and Bambusa textilis.

[0047] In summary, the snail-suppressing ecological revetment design method based on schistosomiasis transmission risk grading proposed in this application, through scientific risk assessment and targeted construction plans, organically combines schistosomiasis control with ecological protection, aligning with the concept of sustainable development. While effectively controlling the spread of schistosomiasis, it protects the balance and stability of the riparian ecosystem, providing a guarantee for the harmonious coexistence of humans and nature.

[0048] This application also proposes a snail-suppressing ecological revetment design system based on schistosomiasis transmission risk classification. Since the design system provided in this embodiment corresponds to the design method provided in the above embodiments, the implementation methods of the aforementioned snail-suppressing ecological revetment design method based on schistosomiasis transmission risk classification are also applicable to the snail-suppressing ecological revetment engineering design system provided in this embodiment. Figure 3 As shown, the snail-suppressing ecological bank protection engineering design system 500 may include: a data acquisition module 510, an index calculation module 520, a risk classification module 530, and a scheme matching module 540.

[0049] Specifically, the data acquisition module 510 is used to divide the river into sections along the river flow direction and acquire ecological and environmental data of each section under different hydrological and meteorological conditions; the index calculation module 520 is used to calculate the comprehensive index of schistosomiasis transmission risk of each section under different hydrological and meteorological conditions based on the ecological and environmental data; the risk classification module 530 is used to classify each section into low-risk or high-risk sections according to the comprehensive index of schistosomiasis transmission risk; and the scheme matching module 540 is used to match the corresponding riverbank construction schemes for river sections of different risk levels.

[0050] Please see Figure 4 This application also provides a computer device, which includes one or more processors 10, a memory 20, and interfaces for connecting the various components, including high-speed interfaces and low-speed interfaces. The various components are interconnected via different buses and can be mounted on a common motherboard or otherwise installed as needed. The processor can process instructions executed within the computer device, including instructions stored in or on memory to display graphical information of a GUI on an external input / output device (such as a display device coupled to the interface).

[0051] In some alternative implementations, multiple processors and / or multiple buses can be used with multiple memories and multiple memory units, if desired. Similarly, multiple computer devices can be connected, each providing some of the necessary operations (e.g., as a server array, a group of blade servers, or a multiprocessor system). Figure 4 Take a processor 10 as an example.

[0052] Processor 10 may be a central processing unit, a network processor, or a combination thereof. Processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The programmable logic device may be a complex programmable logic device (CAMP), a field-programmable gate array (FPGA), a general-purpose array logic (GDA), or any combination thereof.

[0053] The memory 20 stores instructions executable by at least one processor 10 to cause at least one processor 10 to perform the method shown in the above embodiments.

[0054] The memory 20 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the computer device. Furthermore, the memory 20 may include high-speed random access memory and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some alternative embodiments, the memory 20 may optionally include memory remotely located relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0055] The memory 20 may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as flash memory, hard disk or solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0056] The computer device also includes a communication interface 30 for communicating with other devices or communication networks.

[0057] This application also provides a computer-readable storage medium. The methods described in this application can be implemented in hardware or firmware, or implemented as recordable on a storage medium, or implemented as computer code downloaded over a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and subsequently stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that computers, processors, microprocessor controllers, or programmable hardware include storage components capable of storing or receiving software or computer code. When the software or computer code is accessed and executed by the computer, processor, or hardware, the methods shown in the above embodiments are implemented.

[0058] The above are only some or preferred embodiments of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A method for designing snail-suppressing ecological revetments based on schistosomiasis transmission risk grading, characterized in that, include: The river is divided into sections along its flow direction, and ecological environment data for each section under different hydrological and meteorological conditions are obtained. The river is divided into independent sections on both banks, and the ecological environment data includes the maximum flow rate of the river section, the cross-sectional area of ​​the river section, the distance of the river from the settlement, the vegetation coverage, the soil moisture content, and the average density of Oncomelania snails. Based on the aforementioned ecological and environmental data, a comprehensive index of the risk of schistosomiasis transmission in each river section under different hydrological and meteorological conditions was calculated. Based on the comprehensive index, each river segment is divided into a low-risk river segment or a high-risk river segment; Match riverbank construction plans with different risk levels for different river sections.

2. The snail-suppressing ecological revetment design method based on schistosomiasis transmission risk classification according to claim 1, characterized in that, The process of dividing the river into sections along its flow direction and obtaining ecological and environmental data for each section under different hydrological and meteorological conditions includes: The river channel is divided into sections based on the initial data generated from the ecological and environmental characteristics collected by on-site survey equipment. Based on the Oncomelania snail diffusion model and combined with the initial data, the ecological environment data of each river section under different hydrological and meteorological conditions are simulated and predicted.

3. The snail-suppressing ecological revetment design method based on schistosomiasis transmission risk classification according to claim 2, characterized in that, Based on the aforementioned ecological and environmental data, a comprehensive index of the risk of schistosomiasis transmission in each river section under different hydrological and meteorological conditions is calculated. The formula for calculating the comprehensive index is as follows: In the formula, for each river segment, α is the hydrological weight; Qmax is the maximum flow of the river segment; A is the cross-sectional area of ​​the river segment; β is the habitat weight; and γ is the resident exposure risk weight. V represents vegetation coverage (%); λ1 represents vegetation weight; W represents soil moisture content (%); λ2 represents soil moisture weight; S represents the average density of Oncomelania snails, in units of snails / m²; λ3 represents the snail density weight; γ represents the exposure risk weight; and D represents the distance from the river channel to the settlement, in units of meters.

4. The snail-suppressing ecological revetment design method based on schistosomiasis transmission risk classification according to claim 1, characterized in that, The division of river sections into low-risk and high-risk sections based on the comprehensive schistosomiasis transmission risk index includes: Set a reference value for the comprehensive index; The comprehensive index of each river section under different hydrological and meteorological conditions is compared with the reference value, and the river section is determined to be a low-risk or high-risk river section based on the comparison results.

5. The snail-suppressing ecological revetment design method based on schistosomiasis transmission risk classification according to claim 4, characterized in that, The step of comparing the comprehensive index of each river section under different hydrological and meteorological conditions with the reference value, and determining whether a river section is a low-risk or high-risk river section based on the comparison results includes: At least the comprehensive index of each river section under the dry season, normal water season and high water season should be compared with the reference value; The river section is classified as a high-risk river section when the comprehensive index in any period is not lower than the reference value, and the river section is classified as a low-risk area when the comprehensive index in all periods is lower than the reference value.

6. The snail-suppressing ecological revetment design method based on schistosomiasis transmission risk classification according to claim 1, characterized in that, The matching of riverbank construction schemes with different risk levels for river sections also includes: A scheme library is established in advance; the scheme library includes a first riverbank construction scheme and a second riverbank construction scheme. The first riverbank construction scheme is to plant native plants on the riverbank; the second riverbank construction scheme is to establish a graded prevention and control zone on the riverbank based on the target elevation and snail distribution characteristics of the river section. For low-risk river sections, a first-bank construction plan is used, and for high-risk river sections, a second-bank construction plan is used.

7. The snail-suppressing ecological revetment design method based on schistosomiasis transmission risk classification according to claim 6, characterized in that, Before matching the first riverbank construction plan to low-risk river sections and the second riverbank construction plan to high-risk river sections, the following steps are also included: For high-risk river sections, at least the elevation-screw distribution data should be obtained during the dry season, normal water season, and wet season. Based on the elevation-helix distribution data for each period, the target elevation-helix distribution characteristics are determined through weighted superposition calculation.

8. A snail-suppressing ecological bank protection design system based on schistosomiasis transmission risk classification, characterized in that, include: The data acquisition module is used to divide the river into sections along the river's flow direction and acquire ecological and environmental data for each section under different hydrological and meteorological conditions. The index calculation module is used to calculate the comprehensive index of schistosomiasis transmission risk for each river section under different hydrological and meteorological conditions based on the ecological and environmental data. The risk classification module is used to classify each river segment into a low-risk or high-risk river segment based on the comprehensive schistosomiasis transmission risk index. The scheme matching module is used to match riverbank construction schemes with river sections of different risk levels.

9. A computer device, characterized in that, It includes a processor and a memory, the memory being used to store a computer program, which, when executed by the processor, implements the snail-suppressing ecological revetment design method based on schistosomiasis transmission risk classification as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing a computer device to execute the snail-suppressing ecological revetment design method based on schistosomiasis transmission risk classification as described in any one of claims 1 to 7.

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