What question did this study set out to answer?

The research aims to create a robust ecological security pattern framework using data-driven methods for urban areas.

March 14, 2026Land Degradation and Development2 citations

Developing Ecological Security Pattern Based on Clustering Algorithm and Interpretable Machine Learning: A Case Study of Zhengzhou Metropolitan Area, China

SYSicheng YanZhejiang Chinese Medical University ZSZhenqin Shi WZWenbo ZhuHenan University

Key Points

The research aims to create a robust ecological security pattern framework using data-driven methods for urban areas.
Utilized K-means clustering to identify ecological sources based on data distribution.
Employed LightGBM-SHAP to analyze ecological resistance surfaces.
Integrated circuit theory within the framework to optimize ecological security.
Analyzed relationships between ecological factors quantitatively and qualitatively.
Identified 63 ecological sources and 131 ecological corridors in the Zhengzhou Metropolitan Area.
Ecological security levels decreased from mountainous regions to plains, with over half classified as medium-low or low security.
Revealed nonlinear relationships and thresholds for factors like elevation and population density.
Proposed a spatial optimization framework with differentiated restoration strategies for various zones.

Abstract

ABSTRACT Worsening ecological security crises, driven by human activities and rapid urbanization, require more effective ecological security patterns (ESP). Traditional ESP construction relies on multi‐factor overlay analysis and subjective weighting for source identification and resistance surface construction, introducing homogenization bias and failing to capture nonlinear ecological relationships. Moreover, previous studies typically improved individual construction stages in isolation rather than within a unified framework. This study developed a data‐driven framework coupling K‐means clustering algorithm, LightGBM‐SHAP interpretable machine learning, and circuit theory to construct and optimize the ESP for the Zhengzhou Metropolitan Area (ZMA). K‐means clustering identifies ecological sources from intrinsic data distributional patterns without subjective weighting, while LightGBM‐SHAP constructs the ecological resistance surface and reveals how natural and anthropogenic factors influence ecological security. The results showed the following: (1) 63 ecological sources concentrated in western mountainous areas and 131 ecological corridors along with ecological pinch points, barrier points, and breakpoints were identified. (2) Ecological security levels decreased from the western mountainous areas to the eastern plains, with over half the study area classified as medium‐low or low security. The interpretability analysis revealed nonlinear relationships and threshold effects in key factors including elevation, slope, population density, and nighttime light. (3) A spatial optimization framework of “One Core, Two Barriers, Three Corridors, Four Zones” was proposed with differentiated restoration strategies for each zone. This study presents a replicable integrated framework that reduces subjectivity across multiple ESP construction stages and provides a reference for ecologically fragile regions facing rapid urbanization and conservation pressures.

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