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Updated: Jun 13, 2026
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Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm
Published on: December 9, 2012
[Urban ecological land in Changsha City: its quantitative analysis and optimization]
Xiao-Li Li1, Guang-Ming Zeng, Lin Shi
1Ministry of Education Key Laboratory of Environmental Biology and Pollution Control, College of Environmental Science and Engineering, Hunan University, Changsha 410082, China. zwplxl@163.com
Summary
This study evaluated Changsha
Area of Science:
- Urban ecology
- Environmental management
Background:
- Ecological land construction is vital for urban sustainability.
- Assessing the status and distribution of urban ecological land is crucial for effective planning.
- Changsha City's 2007 ecological land status required comprehensive analysis.
Purpose of the Study:
- To construct a hierarchy index system for evaluating ecological land construction.
- To analyze and optimize the distribution pattern of urban ecological land in Changsha.
- To develop an integrated evaluation system for urban ecological land.
Main Methods:
- Developed a hierarchy index system for catastrophe progression method.
- Utilized Geographic Information System (GIS) and 'least-cost' modeling for ecological corridor construction.
- Employed conflict analysis and Fragstats software for optimization and verification.
Main Results:
- Changsha's 2007 urban ecological land had medium ecological efficiency (0.9416), with high quantitative but low coordination indices.
- Optimized ecological land distribution enhanced ecological efficiency to 0.9618.
- Key landscape indices like SHDI and CONTAG improved post-optimization.
Conclusions:
- The constructed hierarchy index system effectively evaluates urban ecological land.
- Optimization strategies significantly improved ecological land efficiency and landscape patterns in Changsha.
- Integrated evaluation systems are essential for rational urban ecological land planning.
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