CN-121981363-A - Method and system for evaluating disaster reduction capability of ecological elements of coastal zone

CN121981363ACN 121981363 ACN121981363 ACN 121981363ACN-121981363-A

Abstract

The invention provides a method and a system for evaluating disaster reduction capability of ecological elements of a coastal zone, and relates to the technical field of disaster reduction capability evaluation. The scheme includes the steps of obtaining multi-source data, preprocessing the multi-source data to obtain preprocessed multi-source data, extracting the preprocessed multi-source data by means of a preset deep learning model to obtain physical parameters of ecological elements of a coastal zone, constructing a disaster reduction capacity quantization model based on the physical parameters of the ecological elements of the coastal zone, and calculating disaster reduction capacity indexes by means of the disaster reduction capacity quantization model. The invention improves the dynamic monitoring capability of the disaster reduction capability assessment method to the ecological elements, realizes the space refinement analysis of the ecological elements and enhances the data driving capability to the ecological elements.

Inventors

LUO XIAOMEI
AI BIN
XIAO HONG
CHEN SIYU
DUAN HONGSHAN
SHEN HAILUN
LIN XIAOBO
LIANG YUCHEN

Assignees

广东省国土资源测绘院
中山大学

Dates

Publication Date: 20260505
Application Date: 20251209

Claims (10)

1. The method for evaluating the disaster reduction capability of the ecological elements of the coastal zone is characterized by comprising the following steps of: s1, acquiring multi-source data, and preprocessing the multi-source data to obtain preprocessed multi-source data; s2, extracting the preprocessed multi-source data to obtain physical parameters of ecological elements of the coastal zone; S3, constructing a disaster reduction capacity quantization model based on physical parameters of the ecological elements of the coastal zone; s4, calculating a disaster reduction capacity index by using the disaster reduction capacity quantization model.
2. The method for evaluating disaster reduction capability of ecological elements of a coastal zone according to claim 1, wherein the multi-source data comprises remote sensing data and environmental data, the remote sensing data comprises optical remote sensing data and synthetic aperture radar data of the coastal zone, and the environmental data comprises historical or real-time marine hydrologic data of the coastal zone.
3. The method for evaluating disaster reduction capability of an ecological element of a coastal zone according to claim 1, wherein the extracting the preprocessed multi-source data to obtain the physical parameters of the ecological element of the coastal zone comprises: S21, identifying the preprocessed multi-source data by using a preset deep learning model to obtain coastal zone ecological element distribution; s22, inverting the distribution of the ecological elements of the coastal zone to obtain the physical parameters of the ecological elements of the coastal zone.
4. The method for evaluating the disaster reduction capability of the ecological elements of the coastal zone according to claim 3, wherein the obtained physical parameters of the ecological elements of the coastal zone comprise a drag coefficient, a vegetation density and a wave propagation distance.
5. The method for evaluating disaster reduction capability of an ecological element of a coastal zone according to claim 4, wherein the method for acquiring the wave propagation distance comprises: S221, extracting a water boundary from the coastal zone ecological element distribution; s222, extracting a coastline normal direction and a wave incident direction from the water body in the water body boundary; s223, calculating an included angle between the wave incident direction and the normal line of the coastline; S224, calculating the actual path length of the wave passing through the coastal zone ecology along the direction of the included angle, and obtaining the wave propagation distance.
6. The method for evaluating disaster reduction capability of an ecological element of a coastal zone according to claim 5, wherein the disaster reduction capability quantization model is: Wherein, the In order to set the coefficient of the power consumption, In order to have a wave height after a distance x, In order for the incident wave to be of high intensity, For drag coefficient, x is wave propagation distance, N is vegetation density, Is the characteristic width of vegetation.
7. The method for evaluating disaster reduction capability of ecological elements of coastal zone according to claim 6, wherein the disaster reduction capability index The method comprises the following steps: Wherein, the For the wave height after the distance x, And x is the wave propagation distance for the incident wave height.
8. A coastal zone ecological element disaster reduction capability assessment system, comprising: the data acquisition module is used for acquiring multi-source data and preprocessing the multi-source data to obtain preprocessed multi-source data; the ecological element physical parameter extraction module is used for extracting the preprocessed multi-source data to obtain the ecological element physical parameters of the coastal zone; The quantitative model construction module is used for constructing a disaster reduction capacity quantitative model based on the physical parameters of the ecological elements of the coastal zone; and the disaster reduction capability index calculation module is used for calculating a disaster reduction capability index by utilizing the disaster reduction capability quantization model.
9. The computer equipment is characterized by comprising a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete communication with each other through the communication bus; The memory is configured to store at least one executable instruction that causes the processor to perform the operations of the coastal zone ecological element disaster reduction capability assessment method according to any one of claims 1-7.
10. A computer-readable storage medium, wherein at least one executable instruction is stored in the storage medium, which when executed on a computer device, causes the computer device to perform the operations of the coastal zone ecological element disaster reduction capability assessment method according to any one of claims 1 to 7.

Description

Method and system for evaluating disaster reduction capability of ecological elements of coastal zone Technical Field The application relates to the technical field of disaster reduction capability assessment, in particular to a method and a system for assessing disaster reduction capability of ecological elements of a coastal zone. Background The coastal zone ecosystem, such as mangrove forest, coral reef, seaweed bed, etc., has the ability to naturally reduce wave energy and hydrodynamic strength during storm surge and billow impact, and is regarded as an important infrastructure for green disaster prevention and reduction. The traditional ecological disaster reduction capability assessment method mainly relies on field measurement and physical model test and a simple empirical formula. For example, the process of simulating waves to pass through vegetation in a water tank has high precision, but is expensive and difficult to apply on a large scale, and the quality evaluation is carried out according to the existence of an ecological system, so that mangrove forest has high disaster reduction capability and quantitative calculation based on specific growth conditions of vegetation, namely density, width, height and the like is lacking. The traditional method has the defects that the evaluation result is difficult to update rapidly when the state of the ecological elements is changed severely before and after the disaster occurs in the field measurement and the physical model test, and the difference of the disaster reduction capability of the ecological elements with good growth vigor and sparse growth vigor cannot be distinguished by performing qualitative evaluation according to the existence or non-existence of an ecological system. Through the retrieval and discovery of the prior art documents, the prior art discloses a mangrove water level reduction evaluation method and system based on hydrodynamic force and factorial design, wherein the method comprises the steps of constructing a hydrodynamic force model, and extracting tide level and typhoon meteorological driving data of a target area; the method comprises the steps of designing mangrove parameters, inputting the mangrove parameters, tide level and typhoon weather driving data into a hydrodynamic model to drive the model to obtain an output water level, carrying out two-factor factorization design test and analysis by taking the output water level as a dependent variable to obtain factorization analysis results, analyzing the factorization analysis results to obtain storm water level reduction evaluation results under the influence of the mangrove, wherein the data in the method are only artificially set and cannot reflect time-varying physics of ecological elements, and the method lacks data driving capability. Disclosure of Invention Based on the above, it is necessary to provide a method and a system for evaluating the disaster reduction capability of the coastal zone ecological element, which are necessary to provide a method and a system for evaluating the disaster reduction capability for improving the dynamic monitoring capability of the ecological element, realizing the analysis of the space refinement of the ecological element and enhancing the data driving capability of the ecological element aiming at the weak dynamic monitoring capability of the ecological element, the lack of the analysis of the space refinement of the ecological element and the poor data driving capability of the ecological element by the existing disaster reduction capability evaluating method. In order to achieve the technical effects, the technical scheme of the invention is as follows: a coastal zone ecological element disaster reduction capability assessment method comprises the following steps: s1, acquiring multi-source data, and preprocessing the multi-source data to obtain preprocessed multi-source data; s2, extracting the preprocessed multi-source data to obtain physical parameters of ecological elements of the coastal zone; S3, constructing a disaster reduction capacity quantization model based on physical parameters of the ecological elements of the coastal zone; S4, calculating a disaster reduction capacity index by using the disaster reduction capacity quantization model; preferably, the multi-source data comprises remote sensing data and environment data, wherein the remote sensing data comprises optical remote sensing data and synthetic aperture radar data of a coastal zone, and the environment data comprises historical or real-time marine hydrologic data of the coastal zone. Preferably, the extracting the preprocessed multi-source data to obtain physical parameters of ecological elements of the coastal zone includes: S21, identifying the preprocessed multi-source data by using a preset deep learning model to obtain coastal zone ecological element distribution; s22, inverting the distribution of the ecological elements of the coastal zone to obtain