Synergistic effects of vegetation restoration and check dams on water erosion in a slope‐gully system

• DOI: 10.1002/ldr.4704
• Publication Date: 2023-04-06T04:40:06Z
• Authors: Lulu Bai; Peng Shi; Zhanbin Li; Peng Li; Zhun Zhao; Jingbin Dong; Lingzhou Cui; Hongbo Niu; Pengju Zu; Manhong Cao
• Keywords: Siltation; Revegetation; Gully Erosion

Abstract Restoring vegetation and constructing check dams are important measures for controlling water erosion in slope‐gully systems. However, percolation through the dam body could lead to shortened runoff paths gully. Moreover, synergistic effects of patterns siltation‐induced path length decrease (RPLD) systems on reducing remain unclear. In this study, 20 physical models were constructed quantitatively evaluate effect these under simulated rainfall. The included four slope (no vegetation, up‐slope, middle‐slope, down‐slope) five levels RPLD gully (0, 1, 2, 3, 4 m). Owing effects, combined led a more considerable reduction soil loss than single measure. Furthermore, was related shorter paths. mean produced following yield order: down‐slope (2.84%) > middle‐slope (2.81%) up‐slope (1.78%); m (3.18%) 3 (2.66%) 2 (2.29%) 1 (1.78%). sediment yields (18.15%) (12.63%) (6.67%), (14.56%) (12.82%) (11.73%) (10.82%). These results suggest that revegetation lower parts slope, along with dams, will be effective erosion. Such should considered future modeling.