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Updated: Sep 6, 2025
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Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm
Published on: December 9, 2012
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Ecological security assessment and ecological pattern optimization for Lhasa city (Tibet) based on the minimum
Lei Huang1,2, Dongrui Wang3, Chunli He3
1Tourism and Urban-Rural Planning College, Chengdu University of Technology, No. 239, Section 2, Chenghua Avenue, Chenghua District, Chengdu, 610059, China. 22261586@qq.com.
Summary
Lhasa
Area of Science:
- Ecological security assessment
- Spatial analysis of biodiversity
- Environmental management in alpine regions
Background:
- Tibet's alpine regions are unique and biodiverse.
- Lhasa's growth strains its fragile environment.
- Balancing development and conservation is critical.
Purpose of the Study:
- To evaluate Lhasa's ecological security level.
- To identify ecological corridors and nodes.
- To propose an ecological network for sustainable development.
Main Methods:
- Ecological resistance surface construction using factor index.
- Minimum Cumulative Resistance (MCR) and gravity models.
- Identification of ecological sources, corridors, and nodes.
Main Results:
- Overall good ecological security, with high levels in the north/northwest/northeast.
- Low ecological security concentrated in the south and city center.
- Identified 51 ecological nodes and 80 potential corridors (3449.7 km).
Conclusions:
- Lhasa's ecological security is generally good but spatially uneven.
- A proposed ecological network (one ring, three belts) supports sustainable development.
- Findings offer spatial planning guidance for Lhasa's ecological economy.
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