Fig. 1
From: Characterization and evaluation of Fe2+ and Mn2+ in reservoirs and sediments in the Jianghuai Region

Reservoir location and sampling point setting (a: dafangying, b: modun, c: dongpu, d: zhongxing).
From: Characterization and evaluation of Fe2+ and Mn2+ in reservoirs and sediments in the Jianghuai Region

Reservoir location and sampling point setting (a: dafangying, b: modun, c: dongpu, d: zhongxing).