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Characteristics of extreme precipitation and its effects on soil and water retention in Sichuan, China under multiple climate change elements

Year: 2025
Type: article
Abstract: During climate change, extreme precipitation events (EPEs) can negatively impact regional water supplies, agriculture, and soil and water conservation. While previous studies have focused on individual climate drivers or hydrological impacts, the simultaneous correlation among multiple climate factors, EPEs, and soil and water conservation capacity has rarely been examined. To address this, this study analyzed 60 years of daily precipitation data in Sichuan Province to investigate the spatial and temporal evolution of EPEs, identify mutation years and future trends. We examined how combinations of climate elements interact to affect EPEs over time and space, quantified their impacts and assessed corresponding shifts in soil and water conservation capacity before and after detected mutation years. Results show an upward trend in EPEs over the past 60 years in Sichuan Province, with notable spatial differences: the western region is becoming wetter, while the eastern region is becoming drier. Although annual precipitation shows no significant change, daily precipitation intensity rose sharply in 2006, leading to marked increases in soil and water retention, especially in eastern Sichuan. Moreover, combined climate drivers, particularly the Arctic Oscillation and sunspot activity, play a strong role in influencing EPE intensity, especially in southern Sichuan. This study provides insights into the impact of climatic factor combinations on EPEs and soil and water conservation, aiding regional water management and disaster prevention in the face of complex climate change.
DOI: 10.1016/j.ecolind.2025.113702
Language: English
Open Access status: gold
Estimated APC paid: $3,650
OpenAlex ID: W4411117732
FWCI: 2.54
Cites: 102
Cited by: 6
Related to: 10