How can the landscape ecological security pattern be quantitatively optimized and effectively evaluated? An...

Area of Science:

• Ecological security patterns
• Landscape ecology
• Urban planning

Background:

• Optimizing landscape ecological security patterns is crucial for creating suitable environments and fostering human-nature harmony.
• Urban development necessitates strategic planning to balance ecological integrity with human activities.

Purpose of the Study:

• To optimize the landscape ecological security pattern in the main urban area of Chongqing.
• To integrate landscape quantity and spatial structure using ecological nodes for improved ecological function.

Main Methods:

• Utilized the granularity inverse method, minimum cumulative resistance model, and spatial network analysis.
• Employed ecological nodes to optimize the landscape ecological security pattern.
• Analyzed the effectiveness of the optimized pattern.

Main Results:

• Identified an optimal granularity of 500 m for ecological sources, with 220 sources covering 188,691.03 hm².
• Defined land-use zones including ecological buffer (57.78%) and protection/utilization (20.87%).
• Established 70 ecological corridors totaling 415.89 km and 41 ecological node service areas (236.0723 hm²).

Conclusions:

• The optimized landscape ecological security pattern effectively converted 209.1384 hm² of non-ecological land to ecological land.
• The study demonstrates a successful approach to enhancing urban ecological environments through integrated pattern optimization.