This research demonstrates a multi-scale ecological security approach for arid cities, integrating ecosystem services and sustainable development goals.
Key Points
The study reveals significant scale-dependent variations in ecological sources' protection needs, impacting conservation strategy.
Ecological sources in Zhangye span approximately 18,367.93 km², covering 47.6% of the city's area.
A three zones and three belts spatial pattern was developed to optimize ecological planning based on regional conservation objectives.
The proposed multi-scale integration fosters a harmonious balance between macro-regional and micro-local conservation efforts.