Abstract
The Sawuer Mountains, located in the western Junggar Basin within northern Xinjiang of China, are considered as a distinct watershed between the Xinjiang inland water system and the Arctic Ocean water system. The suitable climate has fostered the widespread development of peat in the Sawuer Mountains, but our understanding about peat development and their environmental evolution remains limited. This study conducted the detailed investigation of peat developments and their environmental evolution in the Sawuer Mountains inferred from two cores using multi-proxies (peat accumulation rates, loss-on-ignition, total nitrogen, total phosphorus, humification and n-alkanes). The dating results present that peat began to develop at ∼3.1 cal kyr BP. The multi-proxies reveal that the climate exhibited a dry environment at ∼3.1-∼2.24 cal kyr BP and an increasing moisture at ∼2.24-∼1.42 cal kyr BP with the past 1420 years being characterized by an overall drying trend, agreeing well with other records from northern Xinjiang. The moisture reconstruction was both modulated by the NAO (North Atlantic Oscillation) phase and the solar forcing in the late Holocene.
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