Abstract
AbstractThe demand for land exploitation to accommodate increasing population in metropolis is escalating worldwide. The unprecedented Mountain Excavation and City Construction project in the hilly gully Loess Plateau of China is a crustal surgery to seek the balance between urbanization and sustainability in the forerunner Yan'an city. Here, we rely on multisource remote sensing imagery to characterize the contemporary anthropogenic modification of the loess landscape. The topography has been reshaped with ±80‐m elevation changes and 1.28 × 108‐m3 mass transfer by 2015. The subsidence rates at up to ∼70 mm/year during 2014–2020 are proportional to the amount of the filling mass, which is expected to reach stabilization by 2030. Hundreds‐of‐kilopascal stress changes are distributed in the shallow zone due to the mass transfer. Continuous monitoring is an integral part of hazard mitigation in this naturally landslide hazard‐prone loess environment.
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