Relationship between soil 137Cs inventories and chemical properties in a small intensively cropped watershed

Mabit, Lionel; Bernard, Claude

doi:10.1016/s1251-8050(99)80034-2

Cited by 24 publications

(30 citation statements)

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“…Several studies have examined the relationship between SC and soil erosion (Pennock et al, 1994;Palis et al, 1997;Mabit and Bernard, 1998;Pennock, 2000;VandenBygaart, 2001;Ritchie and McCarty, 2003;Polyakov and Lal, 2004;Shukla and Lal, 2005;Van Oost et al, 2005;Li et al, 2006Li et al, , 2007Mabit et al, 2008) using both field and modelling approaches. The environmental tracer 137 Cs has been used in the past to assess the relationship between soil erosion and SC (DeJong et al, 1983;Pennock et al, 1994;Mabit and Bernard, 1998;Pennock, 2000;Ritchie and Rasmussen, 2000;VandenBygaart, 2001;Ritchie and McCarty, 2003;Van Oost et al, 2005;Li et al, 2006Li et al, , 2007Mabit et al, 2008) as the movement of SC is believed to be linked to the movement of the mineral fraction of soil.…”

Section: Introductionmentioning

confidence: 99%

Hillslope and catchment scale soil organic carbon concentration: An assessment of the role of geomorphology and soil erosion in an undisturbed environment

Hancock¹,

Murphy²,

Evans³

2010

Geoderma

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Section: Introductionmentioning

confidence: 99%

Hillslope and catchment scale soil organic carbon concentration: An assessment of the role of geomorphology and soil erosion in an undisturbed environment

Hancock¹,

Murphy²,

Evans³

2010

Geoderma

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“…Based on previous studies (Mabit and Bernard, 1998;Ritchie et al, 2005;Zhang et al, 2006;Li et al, 2007;Guoxiao et al, 2008), the topography and the slope factor -through water erosion processes -is one of the main factors infl uencing SOM and 137 Cs redistribution in the landscape. In our study fi eld with a relatively fl at topography (only 2 m elevation variation), the soil and SOM redistribution should not be linked to water erosion processes only, but also to tillage erosion.…”

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Spatial distribution and content of soil organic matter in an agricultural field in eastern Canada, as estimated from geostatistical tools

Mabit

Bernard

2009

Earth Surf Processes Landf

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Soil erosion induces soil redistribution within the landscape and thus contributes to the spatial variability of soil quality. This study complements a previous experimentation initiated by the authors focusing on soil redistribution as a result of soil erosion, as indicated by caesium-137 ( 137 Cs) measurements, in a small agricultural fi eld in Canada. The spatial variability of soil organic matter (SOM) was characterized using geostatistics, which consider the randomized and structured nature of spatial variables and the spatial distribution of the samples. The spatial correlation of SOM (in percentages) patterns in the topsoil was established taking into account the spatial structure present in the data. A signifi cant autocorrelation and reliable variograms were found with a R 2 ≥ 0·9, thus demonstrating a strong spatial dependence. Ordinary Kriging (OK) interpolation provided the best cross validation (r 2 = 0·35). OK and inverse distance weighting power two (IDW2) interpolation approaches produced similar estimates of the total SOM content of the topsoil (0-20 cm) of the experimental fi eld, i.e. 211 and 213 tonnes, respectively. However, the two approaches produced differences in the spatial distribution patterns and the relative magnitude of some SOM content classes.The spatialization of SOM and soil redistribution variability -as evidenced by 137 Cs measurements -is a fi rst step towards the assessment of the impact of soil erosion on SOM losses to recommend conservation measures.

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“…Addressing the erosion problem at the watershed scale makes possible the integration of agri-environmental and human parameters. In this context, the use of caesium-137 ( 137 Cs) is of particular interest (Mabit et al 1998). From the spatial redistribution of this radioisotope in the environment, the location, extent and rate of soil loss and deposition can be estimated.…”

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confidence: 99%

“…From the spatial redistribution of this radioisotope in the environment, the location, extent and rate of soil loss and deposition can be estimated. A global sediment budget can also be calculated for a period extending over 35 yr, since the peak of 137 Cs fallout was in 1963 (Ritchie and McHenry 1990;Bernard et al 1998;Mabit et al 1998).…”

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confidence: 99%

“…This approach is admittedly applicable in a Northern European plains environment (under intensive agriculture, on soils vulnerable to crusting) and limited areas, but requires numerous data that are not always available (annual fallout of 137 Cs since its first introduction into the environment, specific information to estimate tillage erosion, etc.). Other authors have focused on relationships between 137 Cs and chemical and physical soil properties (Mabit and Bernard 1998;Pennock 2000).…”

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confidence: 99%

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Quantification of soil redistribution and sediment budget in a Canadian watershed from fallout caesium-137 (¹³⁷Cs) data

Mabit¹,

Bernard²,

Laverdière³

2002

Can. J. Soil. Sci.

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Mabit, L., Bernard, C. and Laverdière M. R. 2002. Quantification of soil redistribution and sediment budget in a Canadian watershed from fallout caesium-137 ( 137 Cs) data. Can. J. Soil Sci. 82: 423-431. The intensification and specialization of agriculture that took place in the past decades have resulted in soil and water degradation in several areas of eastern Canada. Most studies on soil erosion in Quebec have been conducted at the experimental plot scale. Although this approach generates precise data, extrapolation at the field or watershed scale is difficult. In this study, caesium-137 ( 137 Cs) was used to investigate the spatial extent and severity of soil erosion for an 80-ha watershed in Southeastern Quebec (cultivated area = 75 ha). Soil samples were collected based on a 25 × 30 m grid and revealed soil redistribution rates ranging from -20 to +12 Mg ha -1 yr -1 . From radiocaesium measurements, it was estimated that the experimental watershed experienced an average loss of 3.0 Mg ha -1 yr -1 with net sediment export of 2.8 Mg ha -1 yr -1 and a sediment delivery ratio of 93%. Snowmelt erosion is believed to have played an important role in the soil redistribution in this small watershed. Changing sampling strategy was tested (50 × 60 m and 100 × 120 m grid rather than 25 × 30 m) and only minor changes were noticed on soil erosion and sediment production estimates, when samples corresponding to the 50 × 60 m grid were used.

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Relationship between soil 137Cs inventories and chemical properties in a small intensively cropped watershed

Cited by 24 publications

References 8 publications

Hillslope and catchment scale soil organic carbon concentration: An assessment of the role of geomorphology and soil erosion in an undisturbed environment

Hillslope and catchment scale soil organic carbon concentration: An assessment of the role of geomorphology and soil erosion in an undisturbed environment

Spatial distribution and content of soil organic matter in an agricultural field in eastern Canada, as estimated from geostatistical tools

Quantification of soil redistribution and sediment budget in a Canadian watershed from fallout caesium-137 (¹³⁷Cs) data

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Relationship between soil 137Cs inventories and chemical properties in a small intensively cropped watershed

Cited by 24 publications

References 8 publications

Hillslope and catchment scale soil organic carbon concentration: An assessment of the role of geomorphology and soil erosion in an undisturbed environment

Hillslope and catchment scale soil organic carbon concentration: An assessment of the role of geomorphology and soil erosion in an undisturbed environment

Spatial distribution and content of soil organic matter in an agricultural field in eastern Canada, as estimated from geostatistical tools

Quantification of soil redistribution and sediment budget in a Canadian watershed from fallout caesium-137 (137Cs) data

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Quantification of soil redistribution and sediment budget in a Canadian watershed from fallout caesium-137 (¹³⁷Cs) data