Method for evaluating security risk level of street tree based on tree attribute data

Abstract

The invention discloses a method for evaluating the security risk level of a street tree based on tree attribute data, and the method comprises the steps: selecting the security risk evaluation index data of the street tree, and carrying out the standardization processing of the selected security risk evaluation index data of the street tree, and obtaining an evaluation index data set; checking the evaluation index data set, judging whether the evaluation index data set is suitable for factor analysis or not, calculating feature values and feature vectors of the evaluation index data set passing the checking by adopting a principal component analysis method, extracting common factors according to feature information and an accumulated variance contribution rate, and estimating a factor load matrix; performing weighted summation according to the variance contribution rate of the common factor to obtain a common factor weight, and calculating street tree safety risk comprehensive score data based on the common factor weight; and rating the street tree safety risk comprehensive score data by using a k-means clustering method to obtain a safety risk level of the street tree.

Description

technical field [0001] The invention relates to the technical field of safety risk assessment, in particular to a method for evaluating the safety risk level of street trees based on tree attribute data. Background technique [0002] As an important part of urban green space, street trees connect the scattered "point" and "surface" green space systems in the city in the form of "lines", and play an irreplaceable role in improving the urban ecological environment and creating a good street view . At the same time, street trees also have potential dangers, such as tree falling, splitting, broken branches, etc., which will endanger the safety of urban residents, traffic and facilities. In recent years, with the continuous development of urbanization, the problems of urban ecological environment have become increasingly prominent, and the safety of street trees has gradually received more attention. How to accurately and quickly evaluate the safety risk of street trees has beco...

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: In order to solve the problems of inadequate index system for street tree safety risk evaluation and strong subjectivity of the evaluation model in the prior art, the present invention proposes a method for evaluating the safety risk level of street tree based on tree attribute data to scientifically determine the safety risk of street tree , providing scientific support for street tree management and organic regeneration

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