Ding, Wenbin ， Wang, Tong ， Ma, Tao ， Wu, Xihui ， Wang, Fei
2025-10-26 HYDROLOGICAL SCIENCES JOURNAL 2025 70(卷), 14(期), (2663-2673页)
This study determines the spatiotemporal dynamics in soil moisture (SM) and the impact of rainfall at various depths across three typical revegetation types through in situ monitoring. Mean SM across the 0-300 cm soil profile was 10.08%, 8.48%, and 7.75% in grassland, caragana, and black locust, respectively, during the growing seasons. SM vertical variation across the entire soil profile displayed three distinct phases: a rapid decline layer (0-60 cm), a relative stability layer (60-180 cm), and a slow increase layer (180-280 cm). Black locust exhibited superior temporal stability compared to caragana and grassland. The fluctuation in SM temporal variation increased during growing seasons, with more obvious variation in the surface layer. SM spatiotemporal dynamics were mainly affected by the synergistic effect of rainfall amount and duration. The impact of individual rainfall characteristics on SM variability is relatively minor. These findings offer critical insights to optimize vegetation restoration strategies within this semi-arid context.