Use of 137Cs and 210Pbex fallout radionuclides for spatial soil erosion and redistribution assessment on steeply sloping agricultural highlands

Yoon, Jung-Hwan; Kim, Young Nam; Kim, Kye-Hoon; Kirkham, M.B.; Kim, Hyuck Soo; Yang, Jae E.

doi:10.1007/s11629-021-7080-0

Cited by 8 publications

(4 citation statements)

References 36 publications

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“…As mentioned above, the results of this study show that the FRN concentration was related to SOM content (Table 1, Figure 3), similar to previous studies' findings [35,41]. These indicate that FRN concentrations may be largely dependent on SOM content.…”

Section: Differentiating the Potential Ss Sources By Binding Frns And...supporting

confidence: 91%

“…FRNs can allocate the amount of SS contributed by each source via physical or biogeochemical properties [38,39]. Several researchers have explained that this method can determine soil and sediment redistribution dynamics within agricultural [40,41] and forested [31,36,42] catchments. Moreover, FRNs have been used to complement conventional methods for assessing SS movement and tracing SS sources within catchments [31,32,35].…”

Section: Introductionmentioning

confidence: 99%

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Differentiating Potential Suspended Sediment Sources Using Radionuclide Tracers and Soil Organic Matter Analysis in a Headwater Catchment in Chuncheon, South Korea

Nam,

Kim,

Jang

et al. 2024

Water

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Identifying potential sources of suspended sediment (SS) in headwater catchments is crucial for water quality management. To differentiate these potential SS sources, we investigated the distribution of two fallout radionuclides (FRNs), 137Cs and 210Pbex, using gamma spectrometry along with soil organic matter (SOM) analysis in a headwater catchment with five potential SS sources: cultivated land, non-harvested forest floor, eroded hillslope, harvested forest floor, and stream bank. The 137Cs and 210Pbex concentrations and the SOM content were considerably higher in the harvested forest floor materials than in the other four potential SS source materials. FRN concentrations revealed distinct properties according to the type of potential SS sources. Specifically, the combination of FRNs (with the effect of SOM content removed) associated with the mineral fraction and SOM showed distinguishable differences among the potential SS sources, except for no difference between cultivated land and eroded hillslope. Therefore, SOM and FRNs, or their combination, can be effective indices to differentiate or trace potential SS sources on various land use/land cover types within a catchment. Further field tests will allow the tracing techniques that bind FRNs with SOM to contribute to understanding SS transport from non-point sources within a catchment.

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Section: Differentiating the Potential Ss Sources By Binding Frns And...supporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Differentiating Potential Suspended Sediment Sources Using Radionuclide Tracers and Soil Organic Matter Analysis in a Headwater Catchment in Chuncheon, South Korea

Nam,

Kim,

Jang

et al. 2024

Water

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“…Other previous studies have also demonstrated that diffuse run-off accounts for 75% of soil degradation. This is indeed an erosive process that occurs silently, but its longterm impact is very significant (Navas et al, 2011;Azaiez, 2016;Xu et al, 2019;Azaiez and Hamza, 2021;Yoon et al 2021).…”

Section: Discussionmentioning

confidence: 99%

Insights into soil loss in the Jouah basin using EPM model and Caesium 137 as an isotopic tracer

Azaiez

2024

Egypt.J. Soil Sci.

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ONITORING water erosion is a difficult task, due to its complex and variable occurrence in both time and space. Climate forcing, steep slopes and anthropogenic action are the primary factors that can endanger soil resources. Located in the heart of the country's agricultural cradle, the Jīzān region is experiencing a twofold degradation of its land. It is both qualitative in the alluvial plain and quantitative in the mountainous areas. This is why it is so important to find a methodological and experimental framework that is suitable for the local conditions of the wadi Jouah watershed, which has undergone a twofold soil loss quantification. The work was started by applying an empirical model based on the Erosion Potential Model (EPM), followed by careful experimental verification using results from monitoring the Caesium-137 Isotopic Tracer. The specific soil loss was around 35.4 t ha -1 yr -1 according to the EPM equation and around 25.5 t ha -1 yr -1 based on Caesium-137 monitoring. This methodological validation is of crucial importance not only in determining the main sediment-emitting zones and the factors behind slope destabilization, but also in understanding and highlighting the regional context of the erosive dynamics in the intertropical, semi-arid, and mountain regions.

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“…First, existing relevant studies in the area were widely collected. Second, wind and water erosion rates of soils in agro-pastoral areas were assessed through field soil survey sampling combined with the use of well-established tracer methods [28][29][30][31][32][33][34] . This integrated approach enables the assessment of soil wind and water erosion rates in agropastoral areas and helps to determine their relative roles in this intertwined area.…”

mentioning

confidence: 99%

Contribution of wind and water erosion in the agricultural and pastoral areas of northern China based on 137Cs tracer technology

Jiang,

Guo,

et al. 2024

Preprint

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This study focuses on the important ecological challenges facing agricultural and pastoral areas in northern China: soil wind and water erosion, both of which contribute significantly to soil degradation. Understanding the relative impacts of these erosion types is crucial for effective erosion control measures. We explored the ratio of soil wind erosion to water erosion in an agro-pastoral zone based on topographic and geomorphic conditions using the 137Cs tracer method. The study showed that cropland is the land type that has suffered the most severe erosion in the region in recent decades. Specifically, on gentle slopes (6–8°), the rate of water erosion exceeded the rate of wind erosion by a factor of about eight, while on steeper slopes (10–15°) this trend was more pronounced, with the rate of water erosion exceeding the rate of wind erosion by a factor of about 27. This result was verified by the measured data in the previous study area. Taken together, water erosion dominates in the agricultural and pastoral areas of northern China, while wind erosion takes second place. Future erosion prevention strategies should prioritize hydraulic erosion control measures on sloping cropland. In addition, it is crucial to promote research on the compound mechanism of wind and water erosion to adopt more effective erosion control measures and ensure the sustainable development of the ecological environment in the region.

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Use of 137Cs and 210Pbex fallout radionuclides for spatial soil erosion and redistribution assessment on steeply sloping agricultural highlands

Cited by 8 publications

References 36 publications

Differentiating Potential Suspended Sediment Sources Using Radionuclide Tracers and Soil Organic Matter Analysis in a Headwater Catchment in Chuncheon, South Korea

Differentiating Potential Suspended Sediment Sources Using Radionuclide Tracers and Soil Organic Matter Analysis in a Headwater Catchment in Chuncheon, South Korea

Insights into soil loss in the Jouah basin using EPM model and Caesium 137 as an isotopic tracer

Contribution of wind and water erosion in the agricultural and pastoral areas of northern China based on 137Cs tracer technology

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