Low carbon development patterns of land use under complex terrain conditions: The case of Chongqing in China

•Explored Chongqing's future development path with macro scenarios and local context.•Obtained high-quality land use and land cover change data for Chongqing.•Assessed land-use carbon emissions at various spatial scales in Chongqing.•Accurately evaluated land use change impacts on climate and environment.•Proposed emission reduction strategies for administrative units at different levels in mountainous cities.