Estimation of medium-term soil redistribution rates in Ibadan, Nigeria, by using the 137 Cs technique
Soil erosion is a widespread and serious problem in Nigeria, West Africa. The 137 Cs technique is an alternative to field plots for generating data on medium-term soil redistri bution. It was tested in 2007 in Ibadan, Nigeria, which means the firs t time in the derived savanna. To analyse the vertical and spatial distribution of this nuclide in the soil, core samples were taken either randomly or along transects in an uncultivated and a cultivated site. The study showed an accumulation of 137 Cs near the soil surface and a slow decr ease with depth in the undisturbed site. The arable land was characterized by an almost uniform 137 Cs distribution within the ploughed layer. The reference inventory of 137 Cs determined on the uncultivated site was 569.3 ± 150.1 Bq m -2 ; the inventory of 137 Cs on the field ranged from 96.9 to 1494.4 Bq m -2 . Comparisons with the reference inventory showed smaller values for the upper slope and higher values for the lower slope of the cultivated site, wh ich indicated soil redistribution. The conversion of the inventories into quantitative data of erosi on and deposition by a proportion model revealed, for example, that about 148.5 t ha -1 yr -1 were eroded from the cropland in furrows leading downslope. The estimated results were comparable to erosion measurements made nearby. Hence, the 137 Cs technique is useful as a method to generate data on soil redistribution a nd therefore a tool for improved natural resource management in Nigeria.
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| Format: | Conference Paper biblioteca |
| Language: | English |
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2008
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| Subjects: | soil erosion, soil redistribution, cs technique, fertile topsoil, uncultivated and a cultivated site, inventory, radionuclides, improved natural resource management, |
| Online Access: | https://hdl.handle.net/10568/90797 |
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dig-cgspace-10568-907972023-02-15T06:39:30Z Estimation of medium-term soil redistribution rates in Ibadan, Nigeria, by using the 137 Cs technique Junge, Birte Dercon, Gerd Abaidoo, Robert C. Chikoye, David Stahr, Karl soil erosion soil redistribution cs technique fertile topsoil uncultivated and a cultivated site inventory radionuclides improved natural resource management Soil erosion is a widespread and serious problem in Nigeria, West Africa. The 137 Cs technique is an alternative to field plots for generating data on medium-term soil redistri bution. It was tested in 2007 in Ibadan, Nigeria, which means the firs t time in the derived savanna. To analyse the vertical and spatial distribution of this nuclide in the soil, core samples were taken either randomly or along transects in an uncultivated and a cultivated site. The study showed an accumulation of 137 Cs near the soil surface and a slow decr ease with depth in the undisturbed site. The arable land was characterized by an almost uniform 137 Cs distribution within the ploughed layer. The reference inventory of 137 Cs determined on the uncultivated site was 569.3 ± 150.1 Bq m -2 ; the inventory of 137 Cs on the field ranged from 96.9 to 1494.4 Bq m -2 . Comparisons with the reference inventory showed smaller values for the upper slope and higher values for the lower slope of the cultivated site, wh ich indicated soil redistribution. The conversion of the inventories into quantitative data of erosi on and deposition by a proportion model revealed, for example, that about 148.5 t ha -1 yr -1 were eroded from the cropland in furrows leading downslope. The estimated results were comparable to erosion measurements made nearby. Hence, the 137 Cs technique is useful as a method to generate data on soil redistribution a nd therefore a tool for improved natural resource management in Nigeria. 2008 2018-02-06T12:14:48Z 2018-02-06T12:14:48Z Conference Paper Birte, J., Dercon, G., Abaidoo, R.C., Chikoye, D. & Stahr, K. (2008). Estimation of Medium-Term Soil Redistribution Rates in Ibadan, Nigeria, by using the 137Cs Technique: Proceedings of Tropentag: Conference on International Research on Food Security, Natural Resource Management and Rural Development, University of Hohenheim, 7-9 October, 2008. Stuttgart: University of Hohenheim. https://hdl.handle.net/10568/90797 en Open Access application/pdf |
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soil erosion soil redistribution cs technique fertile topsoil uncultivated and a cultivated site inventory radionuclides improved natural resource management soil erosion soil redistribution cs technique fertile topsoil uncultivated and a cultivated site inventory radionuclides improved natural resource management |
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soil erosion soil redistribution cs technique fertile topsoil uncultivated and a cultivated site inventory radionuclides improved natural resource management soil erosion soil redistribution cs technique fertile topsoil uncultivated and a cultivated site inventory radionuclides improved natural resource management Junge, Birte Dercon, Gerd Abaidoo, Robert C. Chikoye, David Stahr, Karl Estimation of medium-term soil redistribution rates in Ibadan, Nigeria, by using the 137 Cs technique |
| description |
Soil erosion is a widespread and serious problem in Nigeria, West Africa. The 137 Cs technique is
an alternative to field plots for generating data
on medium-term soil redistri
bution. It was tested
in 2007 in Ibadan, Nigeria, which means the firs
t time in the derived savanna. To analyse the
vertical and spatial distribution
of this nuclide in the soil, core samples were taken either
randomly or along transects in
an uncultivated and a cultivated
site. The study showed an
accumulation of
137
Cs near the soil surface and a slow decr
ease with depth in the undisturbed site.
The arable land was characterized by an almost uniform
137
Cs distribution within the ploughed
layer. The reference inventory of
137
Cs determined on the uncultivated site was 569.3
±
150.1 Bq
m
-2
; the inventory of
137
Cs on the field ranged from 96.9 to 1494.4 Bq m
-2
. Comparisons with the
reference inventory showed smaller values for
the upper slope and higher values for the lower
slope of the cultivated site, wh
ich indicated soil redistribution.
The conversion of the inventories
into quantitative data of erosi
on and deposition by a proportion model revealed, for example, that
about 148.5 t ha
-1
yr
-1
were eroded from the cropland in furrows leading downslope. The
estimated results were comparable to erosion measurements made nearby. Hence, the
137
Cs
technique is useful as a method to generate data
on soil redistribution a
nd therefore a tool for
improved natural resource management in Nigeria. |
| format |
Conference Paper |
| topic_facet |
soil erosion soil redistribution cs technique fertile topsoil uncultivated and a cultivated site inventory radionuclides improved natural resource management |
| author |
Junge, Birte Dercon, Gerd Abaidoo, Robert C. Chikoye, David Stahr, Karl |
| author_facet |
Junge, Birte Dercon, Gerd Abaidoo, Robert C. Chikoye, David Stahr, Karl |
| author_sort |
Junge, Birte |
| title |
Estimation of medium-term soil redistribution rates in Ibadan, Nigeria, by using the 137 Cs technique |
| title_short |
Estimation of medium-term soil redistribution rates in Ibadan, Nigeria, by using the 137 Cs technique |
| title_full |
Estimation of medium-term soil redistribution rates in Ibadan, Nigeria, by using the 137 Cs technique |
| title_fullStr |
Estimation of medium-term soil redistribution rates in Ibadan, Nigeria, by using the 137 Cs technique |
| title_full_unstemmed |
Estimation of medium-term soil redistribution rates in Ibadan, Nigeria, by using the 137 Cs technique |
| title_sort |
estimation of medium-term soil redistribution rates in ibadan, nigeria, by using the 137 cs technique |
| publishDate |
2008 |
| url |
https://hdl.handle.net/10568/90797 |
| work_keys_str_mv |
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| _version_ |
1779065388043075584 |