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

Journal of Environmental Radioactivity
A ChappellX Y Li

Abstract

The caesium-137 ((137)Cs) 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 to evaluate change over small (years to decades) timeframes. This interest stems from knowledge that since the 1950s soil redistribution has responded dynamically to different phases of land use change and management. Currently, there is no standard approach to detect change in (137)Cs-derived net soil redistribution and thereby identify the driving forces responsible for change. We outline recent advances in space-time sampling in the soil monitoring literature which provide a rigorous statistical and pragmatic approach to estimating the change over time in the spatial mean of environmental properties. We apply the space-time sampling framework, estimate the minimum detectable change of net soil redistribution and consider the information content and cost implications of different sampling designs for a study area in the Chinese Loess Plateau. Three phases (1954-1996, 1954-2012 and 1996-2012) of net soil erosion were detectable and attributed to well-documented historical change in land use and management practices in the stu...Continue Reading

References

May 24, 2006·Molecular and Cellular Probes·Johanna M de GruijterRobin B Gasser
Aug 10, 2007·Proceedings of the National Academy of Sciences of the United States of America·David R Montgomery
Dec 8, 2007·The Science of the Total Environment·X MorvanM G Kibblewhite

❮ Previous
Next ❯

Related Concepts

Related Feeds

Ataxia telangiectasia (MDS)

Ataxia telangiectasia is a rare neurodegenerative diseases caused by defects in the ATM gene, which is involved in DNA damage recognition and repair pathways. Here is the latest research on this autosomal recessive disease.