Thermal mechanisms reorganize, not merely attenuate, across the urban–rural gradient: A diurnal analysis of land surface temperature drivers in Changsha, China - Qianjun Wei; Dongxuan Zhou; Xinying Yang; Wenzhong Zhang; Siyu Fan; Wenjun Kuang; Shuchang Luo; De Yu; Jie Tan (Sustainable Cities and Society, 2026)