Study on the driving force of seasonal changes of soil erosion in Lulang-Tongmai section of Sichuan-Tibet Highway
Xu Tong, Zhu Kangcheng, Wu Hua, Chen Yingzhu, Zhou Jianwei, Chen Linna, Kong Yuzhong
TL;DR
This study examines how seasonal changes in climate affect soil erosion along a section of the Sichuan-Tibet Highway, identifying key factors like temperature and rainfall.
Contribution
The study identifies seasonal variations in the driving forces of soil erosion and quantifies the interaction effects of climate factors.
Findings
Soil erosion intensity decreased from 2000 to 2023 but remains severe near specific bridges.
Rainfall is strongly correlated with erosion, while vegetation reduces erosion over time.
Seasonal drivers include temperature and precipitation in spring, summer, and autumn, and elevation in winter.
Abstract
In the context of global climate change, the section of the Sichuan-Tibet Highway from Lulang to Tongmai has become a focal point for soil erosion research due to its unique geographical location and complex natural environment. Studies have shown that between 2000 and 2023, soil erosion intensity in this area has decreased. However, erosion intensity increases from southwest to northeast, with particularly severe erosion near the Tongmai Grand Bridge and Polong Gou Grand Bridge. Correlation analysis reveals a significant positive correlation between rainfall and soil erosion, while vegetation cover is positively correlated with erosion in the short term but contributes to reduced erosion over the long term. Geodetector analysis indicates that the main driving factors vary by season. In spring, summer, and autumn, temperature and precipitation are the primary drivers, with driving…
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Taxonomy
TopicsSoil erosion and sediment transport · Hydrology and Watershed Management Studies · Hydrology and Sediment Transport Processes