Influence of Land Use/Cover Change on Soil Surface Erosion/Deposition Process: Evidence from 137Cs as A Tracer
土地利用/覆盖变化对地表蚀积过程的影响——来自137Cs示踪的证据

Land use/cover changes affect both redistribution of 137Cs inventory and 137Cs depth distribution in soil profile.Redistribution of 137Cs inventory of several main types of land use/cover in Bashang region of Hebei province indicated that the region was in a wind erosion environment,where current agricultural land and deserted arable land are land use types suffering from the most serious wind erosion.137Cs depth distribution denoted the conversion of soil erosion/deposition by wind in the process of land use/cover change,which proved the significance of vegetation restoration by afforesting or planting grass on the current agricultural land in stead of further cultivation for wind erosion control and eco-environmental improvement.The results suggested that the process of land use/cover change should be fully considered in estimating soil erosion/deposition rates using 137Cs as a tracer.