Comparative ecological network pattern analysis: a case of Nanchang

Area of Science:

• Urban ecology
• Landscape ecology
• Conservation science

Background:

• Ecological landscape connectivity is crucial for biodiversity and ecosystem functioning.
• Previous studies used area threshold or CMSPACI methods for ecological source identification.
• A comparative analysis of these methods is lacking.

Purpose of the Study:

• To compare the area threshold and CMSPACI methods for identifying ecological sources.
• To analyze the resulting ecological networks and optimize patterns.
• To provide recommendations for urban ecological network construction.

Main Methods:

• Ecological source identification using area threshold and CMSPACI.
• Minimum cost distance method for corridor generation.
• Circuit theory for barrier identification.

Main Results:

• CMSPACI identified ecological sources with higher connectivity than the area threshold method.
• Corridors generated via CMSPACI exhibited better habitat quality and patch interaction.
• Ecological barriers were primarily roads and construction land, regardless of the method.

Conclusions:

• The CMSPACI method is superior for identifying ecological sources and enhancing landscape connectivity.
• Ecological network optimization requires careful selection of source identification methods.
• Targeted barrier mitigation is essential for effective ecological network design.