Spatial-temporal pattern of ecosystem services and sustainable development in representative mountainous cities: A case study of Chengdu-Chongqing Urban Agglomeration - Liang Chen; Ying Yao; Keming Xiang; Xiaoai Dai; Wenyu Li; Hang Dai; Ke Lu; Weile Li; Heng Lu; Yang Zhang; Huan Huang; Meilian Wang (Journal of Environmental Management, 2024)