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Ecological Security Pattern Construction in Karst Area Based on Ant Algorithm.

Xiaoqing Zhao¹, Qifa Yue¹, Jianchao Pei²

¹School of Earth Sciences, Yunnan University, Kunming 650500, China.

International Journal of Environmental Research and Public Health

|July 2, 2021

Summary

Ecological security patterns were constructed in Guangnan County, a fragile Karst region, identifying 23 ecological sources and 23 corridors. This study provides a framework for ecological protection and sustainable development in Karst areas.

Keywords:

Ant algorithm Karst area ecological security pattern ecosystem services the paradigm of “Source-Corridor-Ecological restoration point”

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Area of Science:

Environmental Science
Ecology
Geography

Background:

Ecological security patterns are crucial for ecosystem services and sustainable development, especially in fragile regions like the Karst area of southeastern Yunnan.
Guangnan County faces ecological fragility, necessitating targeted strategies for environmental protection.

Purpose of the Study:

To construct an ecological security pattern for Guangnan County, integrating ecological conditions and rocky desertification mechanisms.
To identify ecological sources, corridors, and restoration points to enhance regional ecological security.

Main Methods:

Hot spot analysis was used to identify ecological sources.
A resistance factor index system, modified by ecological sensitivity, was developed.
Ant algorithm and Kernel density analysis were employed to determine ecological corridors and restoration points.

Main Results:

Twenty-three ecological sources (16.74% of the total area) were identified, primarily forests in non-Karst zones.
The revised resistance surface showed lower values in the north and higher in the south, aligning with Karst distribution.
Twenty-three ecological corridors and thirty-eight ecological restoration points were established, vital for maintaining source connectivity.

Conclusions:

The constructed "Source-Corridor-Ecological restoration point" paradigm effectively outlines the ecological security pattern for Guangnan County.
The findings offer a theoretical basis and practical guidance for ecological security pattern construction in Karst regions.
This research supports regional ecological security and promotes sustainable development in ecologically vulnerable areas.