A 1.68 Ma organic isotope record from the Hetao Basin, upper reaches of the Yellow River in northern China: Implications for hydrological and ecological variations

Quaternary hydrological and ecological variation of the paleolakes, intermittently developed within the Hetao Basin in North China, is not only closely related to the evolution of the Yellow River discharge but also influenced by the East Asian summer monsoon. However, long-term variability history of hydrology and ecology of these lakes, as well as the driving mechanism, is still poorly understood. Here, we reconstructed the hydrological and...