A method for evaluating ecological restoration effect of natural forest

By combining spatial overlay analysis and lidar data, the problem of insufficient identification of understory structure in the evaluation of natural forest ecological restoration was solved, and the degree of ecological niche filling was accurately quantified and managed.

CN122114372APending Publication Date: 2026-05-29CHENGDU ACAD OF AGRI & FORESTRY SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHENGDU ACAD OF AGRI & FORESTRY SCI
Filing Date
2026-02-11
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing natural forest ecological restoration assessment methods cannot accurately identify understory structure information, and the assessment results are out of touch with the ecological reality, making it difficult to quantify the degree of niche filling.

Method used

The spatial overlay analysis method was used to divide forest ecological monitoring units. Three-dimensional ecological indicators were obtained by combining airborne lidar and ground-based lidar data. The weights of the indicators were calculated by a subjective and objective weighting method, and the succession constraint factor adjustment coefficient was introduced to construct a niche filling degree evaluation model based on the Laplace membership function.

Benefits of technology

It enables precise quantification of the ecological restoration effect of natural forests, identifies understory vegetation and vertical structure, improves the sensitivity and accuracy of evaluation, and provides a scientific basis for management.

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Abstract

The present application relates to the technical field of ecological restoration effect evaluation, in particular to a natural forest ecological restoration effect evaluation method, the steps are as follows: based on the microtopography and geomorphology characteristics and the spatial distribution characteristics of vegetation community of the target natural forest area, using spatial overlay analysis method, it is divided into multiple forest ecological monitoring units, and the three-dimensional ecological index set of each unit is obtained by combining airborne and ground-based laser radar point cloud data; according to the three-dimensional ecological index set, the index weight is calculated by using the subjective and objective combination weighting method; the subjective and objective weight is fused by introducing the succession limiting factor adjustment coefficient, and the ecological limiting dynamic weight value of each unit is obtained, and the niche filling degree evaluation model based on laplace membership function is constructed, and the ecological restoration effect of natural forest is qualitatively evaluated. The present application can accurately monitor the vertical structure by fusing air-ground radar data, effectively identify pseudo-restoration; the evaluation sensitivity and scientificity are significantly improved by introducing the succession dynamic weighting and laplace model.
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