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MaxEnt model-based snail intrusion adaptability analysis method, system and terminal

An analysis method and biotechnique, applied in the field of optimization and application of ecological distribution models, can solve the problems of reduced model transfer ability, overfitting during model construction, and reduced efficiency and reliability of snail invasion fitness analysis. The effect of transferring ability, reducing computing time, and improving the efficiency and reliability of fitness analysis

Pending Publication Date: 2022-04-01
SUN YAT SEN UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of this application is to provide a method, system and terminal for analyzing the fitness of snail invasion based on the MaxEnt model, and to solve the problems caused by the distribution point and environment of the snail invasion fitness analysis model in the prior art. The factors have not been screened, and also because of collinearity and other problems, the model is overfitted, resulting in a decrease in the transferability of the model, and finally leading to a significant reduction in the efficiency and reliability of the fitness analysis of snail invasion.

Method used

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  • MaxEnt model-based snail intrusion adaptability analysis method, system and terminal
  • MaxEnt model-based snail intrusion adaptability analysis method, system and terminal
  • MaxEnt model-based snail intrusion adaptability analysis method, system and terminal

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Embodiment 1

[0067] Embodiment 1: Amethyst snail invasion fitness analysis method;

[0068] The ENM tool was used to screen the 4698 species distribution points downloaded by GBIF, and the longitude and latitude of 1679 distribution points were finally retained. There are 56 species of bio1-19, tmax1-12, tmin1-12, prec1-12 and elev downloaded by worldclim Collinearity analysis of environmental factors, such as image 3 As shown, BIO2, 6, 12, 13, 18; prec5, 7, tmax11 and tmin4 are finally selected, and the selected factors and species distribution points are imported into the Kuenm package for optimization, such as Figure 4 As shown, the combination with the smallest AICc, ie, FC=LQH, RM=2, is selected for model construction. Based on the constructed method, the fitness for the invasion of snail snails in the area to be predicted was analyzed. The area under the receiver operating curve (AUC) of the analyzed image of the suitable living area is as follows: Figure 5 As shown, the respon...

specific Embodiment

[0072] like Figure 9 A schematic diagram showing the structure of a snail invasion fitness analysis system based on the MaxEnt model in the embodiment of the present invention.

[0073] The system includes:

[0074] The model construction module 111 is used to screen multiple species distribution points and multiple environmental variables corresponding to the collected snail invasion events, and construct a parameter-optimized analysis model for the fitness of snail invasion based on the MaxEnt model;

[0075] The fitness analysis module 112 is connected to the model construction module 111 and is used to analyze the fitness of the snail invasion in the area to be predicted based on the fitness analysis model of the snail invasion.

[0076] It should be noted that it should be understood Figure 9 The division of each module in the system embodiment is only a division of logical functions, and may be fully or partially integrated into a physical entity or physically separa...

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Abstract

The invention discloses a MaxEnt model-based snail invasion adaptability analysis method and system and a terminal, and the method comprises the steps: screening a plurality of species distribution points and a plurality of environment variables corresponding to collected snail invasion events, and constructing a parameter-optimized snail invasion adaptability analysis model based on a MaxEnt model; and based on the snail invasion adaptability analysis model, analyzing snail invasion adaptability of a to-be-predicted region. According to the method, the complexity of the Maxent adaptive model can be reduced, so that the operation time is shortened, overfitting is avoided during model construction, the model transfer capability is improved, the method can be suitable for adaptive analysis of various invasive snail species, and the adaptive analysis efficiency of the invasive snail species is greatly improved.

Description

technical field [0001] This application relates to the field of optimization and application of ecological distribution models, in particular to a method, system and terminal for analyzing the fitness of snail invasion based on the MaxEnt model. Background technique [0002] With the advancement of the global integration process, the exchanges between countries have become closer, bringing a lot of invasive alien organisms, which have caused certain harm to our country's native species, ecological environment, human health, and social economy. Quantitative risk assessment of invasive alien species is the general trend of development. At present, risk quantification is mainly reflected in the colonization risk, spread risk and social impact of invasive alien species. The fitness analysis of invasive alien species in target areas is a qualitative analysis. basis for reproductive risk assessment. [0003] The MaxEnt model is currently recognized as the ecological model with th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20
CPCY02A90/40
Inventor 李学荣殷颖璇吴银娟何晴潘筱雯
Owner SUN YAT SEN UNIV