Aeolian activity characteristics and influencing factors of the dry lakebed of Chahan Lake on the Bashang Plateau
Received date: 2024-10-28
Revised date: 2024-12-06
Online published: 2025-03-26
In recent decades, climate change and unsustainable water resource exploitation have disrupted the natural balance of inland lake ecosystems in China, leading to the shrinkage of lakes and the exposure of dry beds prone to wind erosion and salt-dust storms, which pose greater environmental risks than typical sandstorms. This study investigates the dry lakebed of Chahan Lake on the Bashang Plateau, a critical upwind area for Beijing-Tianjin-Hebei. Through field observations, ground surveys, and sediment sampling, the spatial-temporal patterns of springtime aeolian activity and influencing factors were analyzed. Results show that aeolian activity decreases over spring due to weakening winds, increasing precipitation, and the formation and fragmentation of surface salt crusts. Early spring sees much stronger activity than late spring. A high-risk zone for salt-dust release, covering 10.27 km², was identified in the southwestern lake center and a 0.72 km² sand accumulation area downwind, with maximum sand transport intensity reaching 88 336.60 g·m⁻¹·d⁻¹.
Key words: dry lakebed; aeolian activity; salt-dust storm; field observation; Chahan Lake
Ying Liu , Rende Wang , Hongjun Jiang , Qing Li , Yixiao Yuan , Ruchun Zhang , Tao Zhang . Aeolian activity characteristics and influencing factors of the dry lakebed of Chahan Lake on the Bashang Plateau[J]. Journal of Desert Research, 2025 , 45(2) : 129 -141 . DOI: 10.7522/j.issn.1000-694X.2024.00170
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