Cost-effective sampling of 137Cs-derived net soil redistribution: part 2 estimating the spatial mean change over time

摘要: The caesium-137 (137Cs) technique for estimating net, time-integrated soil redistribution by the processes of wind, water and tillage is increasingly being used with repeated sampling to form a baseline evaluate change over small (years decades) timeframes. This interest stems from knowledge that since 1950s has responded dynamically different phases land use management. Currently, there no standard approach detect in 137Cs-derived net thereby identify driving forces responsible change. We outline recent advances space-time monitoring literature which provide rigorous statistical pragmatic time spatial mean environmental properties. apply framework, estimate minimum detectable consider information content cost implications designs study area Chinese Loess Plateau. Three (1954–1996, 1954–2012 1996–2012) erosion were attributed well-documented historical management practices across region. recommend design considered carefully alongside cost-effective correctly attribute cause particularly scales variation.