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Estimation of soil erosion from caesium-137 measurements in a small, cultivated catchment in Australia

✍ Scribed by R.J. Loughran; G.L. Elliott; B.L. Campbell; D.J. Shelly

Publisher: Elsevier Science
Year: 1988
Weight: 441 KB
Volume: 39
Category: Article
ISSN: 0883-2889
DOI: 10.1016/0883-2889(88)90009-3

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✦ Synopsis

Measurements

are reported of the distribution of "'Cs within a 6.6 ha drainage basin on cultivated black earth soils located near Merriwa in New South Wales (N.S.W.). The results were used to estimate net loss as well as accumulation of soil. The losses of "'Cs from the catchment slopes were assessed relative to an estimated input of "'Cs of 1OOmBq cm-l.

A regression equation was developed which relates the net loss of soil by erosion of black earth soils (kg ha-' y-') as a function of the measured loss of '~'CS activity in the soil expressed as a percentage of the normal input value.

Each input datum of '~'CS activity into the regression equation was obtained under similar conditions. Rates of soil losses, estimated at 19 sites, ranged between 420 and 2970 kg ha-' y-' with an average of 1530 kg ha-' y-l. The results confirmed the usefulness of the "'Cs technique for estimating loss of soil by erosion

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