Policy-oriented framework for multi-tiered urban development boundaries in the Tibetan-Qiang-Yi corridor
Year: 2025
Type: article
Abstract: Urban development boundaries are critical tools for guiding urban land use and territorial spatial patterns; however, existing studies often overlook the impacts of primary functional zoning. This study, based on "dual evaluation" results and township-level functional zoning, delineates areas suitable and unsuitable for urban construction. Employing the PLUS model, it simulates land use changes in the Panxi Dry-Hot Valley region for 2035 and integrates convex hull model validation to establish multi-tiered urban development boundaries, including baseline, elastic, and priority development boundaries. The findings indicate that: (1) the western region prioritizes ecological protection, while the central region emphasizes agricultural production and urban development; (2) under the natural development scenario, construction land expands significantly by 2035, whereas the policy-driven scenario effectively curbs expansion, demonstrating the regulatory effects of policy constraints; and (3) the areas of the multi-tiered urban development boundaries are 313.37 km², 5882.12 km², and 25023.94 km², respectively. This approach integrates regional planning with policy constraints, providing a systematic framework for delineating hierarchical development boundaries. It mitigates conflicts among urban development, farmland protection, and ecological conservation, offering valuable insights for promoting regional coordinated development.
Authors: Xin Cheng, Zuolin Xiao, Lin Dai, Xinyi Hu, Jie Min, Dasong Li
Institution: Chongqing Normal University
Language: English
Subfield: Global and Planetary Change
Field: Environmental Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,350
Award: G8443166028
OpenAlex ID: W4410768646