Research Progress on Dynamic Monitoring Technology of Soil Erosion in Sloping Farmland

Abstract

Abstract In this paper, the dynamic monitoring of soil erosion on sloping farmland was systematically summarized and analyzed from the two aspects of research methods and monitoring techniques. In terms of monitoring methods, the main methods are field runoff monitoring test plot observation, indoor and outdoor artificial simulated rainfall observation and water flushing test observation. In terms of monitoring technology, there are mainly contact monitoring technologies such as steel brazing, erosion needle and element tracing, and non-contact monitoring technologies such as three-dimensional laser technology, close range photogrammetry and model simulation prediction. Among them, the field runoff monitoring test plot observation method can obtain the natural soil erosion on the slope, the artificial simulated rainfall and water flushing test can realize the human controlled soil erosion monitoring test on the slope, and the test data has better availability and controllability. In terms of monitoring technology, 3d laser and close-range photogrammetric reconstruction technology have prominent advantages in dynamic monitoring of soil erosion on slope surface, which provides a new monitoring means and ideas for soil erosion monitoring on sloping farmland.