Spatial heterogeneity and distribution patterns of dissolved carbons and total ammonia nitrogen in the upper Changjiang River under 2022 summer extreme drought conditions. - Zhang, Shuangyin; Wang, Siying; Fu, Chongqing; Zhao, Baocheng; Xu, Jian; Fu, Junlin; Chen, Yiyun; Gao, Lyuzhou (Carbon Balance & Management, 2025)