Incorporating water-energy-carbon constraints into the optimization of urban refined land use: A case study of Zhengzhou, China - Zhixiang Xie; Wei Feng; Rongqin Zhao; Liangang Xiao; Hanbing Li; Shuangsheng Yao; Yaohui Gao; Yufei Ji; Xiaowei Chuai (Sustainable Cities and Society, 2026)