Loess in China occupies 0.63 million square kilometer and exists in 12 provinces, of which 0.4 million square kilometer is loess plateau. Loess plateau is the main product base of oil, gas, and coal resources. Unfortunately, it is also a geo-hazard-prone region, including collapse, landslide, earthflow, land subsidence, and ground fissures. In the past 30 years, thousands of people died by the loess geo-hazards.1 Currently, loess geo-hazards threaten the transportation system, local citizens, and natural resource exploration. The trigger factors of a loess landslide comprise of earthquake, strong rainfall, and seasonal irrigation.2–6 The characteristics of a loess landslide are special in the following aspects: group occurrence, small spatial scale, and temporal abrupt deformation for most specific landslides. Consequently, the detection of loess landslides over a large area, high-precision deformation monitoring, and early warning of the specific loess landslide are still challenging. The landslide in the southern bank of Jinghe River, Shaanxi province, China, is one of the typical cases, which is mainly triggered by farmland irrigation.7–9 The southern bank of Jinghe River, a small section of the subregion of Weibei loess plateau in Weihe basin, is 27.1 km in length, including three towns as Taiping, Jiangliu, and Gaozhuang and 21 villages. The heights on this terrace range from 450 to 580 m, with the slopes from 4 to 9‰. The height differences between the top and toe of the terrace range from 30 to 90 m. Since 1976, around 50 landslides over 27 sites have taken place along this region.7 These landslides have seasonal features, which are correlated with heavy rainfall and farmland irrigation. More than 80 percent of the landslides occurred in spring or autumn, with a certain time lag of irrigation or heavy rainfall.