Empirical relationships of the landslides in the Chinese Loess Plateau and affect factors analysis

The CLP (Chinese Loess Plateau) is one of the most densely distributed landslides areas. The empirical relationships of the landslides in the CLP remain unclear, and its influencing factors are controversial. According to regional landslide data, this paper studies the relationships and discusses the factors affecting landslides in the CLP. The results show that the area (A) -volume (V) of landslides follows a power law trend described by V = 1.53 A (1.19) and the frequency distribution range of H/L (height drop (H)/travel length (L)) is between 0.2 and 1.0, more specifically between 0.2 and 0.4, accounting for 26.1% of the total landslides, indicating that the landslides primarily belong to long run-out landslides. The function of V and H/L of the landslides is followed by H/L = 2.39 V (-0.102). About 87% of the landslide is distributed within the equilibrium or mature stages of the watershed. The landslide's size increases, and the slope of the landslides are steeper with an increase in H-I (hypsometric integral). Meanwhile, the loess thickness, human activities, and slope effects on landslides induce landslide occurrence and have positive and negative effects on the landslides within the CLP. With climate change, the risk of landslides will increase in the CLP.

Automated summary

This paper studies the relationships and influential factors of landslides in the densely distributed Chinese Loess Plateau (CLP). It finds that the area-volume relationship of landslides follows a power law trend and that the majority of landslides are long run-out landslides. The size of landslides increases with an increase in hypsometric integral, and factors such as loess thickness, human activities, and slope have both positive and negative effects on landslides in the CLP. The study also suggests that landslide risk will increase with climate change.