Ballantine,D.J., Walling,D.E., Collins,A.L. and Leeks,G.J.L.(2009): The content and storage of phosphorus in fine-grained channel bed sediment in contrasting lowland agricultural catchments in the UK. Geoderma, 151, 141-149.

『英国の低地農業集水域の比較における細粒流底堆積物中のリンの成分と存在量』

『Abstract
　Deposition and storage of the fine sediment on channel beds can represent an important component of catchment sediment budgets and can therefore have implications for particulate phosphorus (PP) transfers. Accordingly, spatial and temporal variations in the phosphorus )P) content of the fine (＜63μm) bed sediment and associated P storage have been studied in three UK lowland permeable catchments, the Pang and Lambourn (Berkshire) and the Tern (Shropshire). These catchments were chosen because of their contrasting geologies. Fine bed sediment was sampled in representative reaches on a bi-monthly basis using a resuspension technique, and analysed for total P, a range of P fractions and particle size. The results demonstrate significant spatial and temporal variability in PP concentrations and storage both between and within the study catchments, with concentrations and storage of PP higher in the Tern catchment than in the Pang and Lambourn, mainly due to the contrasting geologies and different land management practices in the catchments. Maximum and minimum PP concentrations and storage occurred in late summer and winter, respectively. It was concluded that geology played an important role in P storage associated with fine bed sediments.

Keywords: Phosphorus; Storage; Bed sediment; UK; Spatial variation; Temporal variation』

1. Introduction
2. Materials and methods
　2.1. Study areas
　2.2. Field sampling
　2.3. Laboratory analyses
3. Results
　3.1. Spatial variation in TP concentrations
　　3.1.1. Between catchment variation in TP concentrations
　　3.1.2. Within catchment variation in TP concentrations
　3.2. Spatial variations in phosphorus fractions
　　3.2.1. Between catchment variation in phosphorus fractions
　　3.2.2. Within catchment variation in phosphorus fractions
　3.3. Variations in specific surface area between, and within, catchments
　3.4. TP storage
　　3.4.1. Spatial variation in TP storage between catchments
　　3.4.2. Spatial variation in TP storage within catchments
　3.5. Temporal variation in phosphorus concentrations, storage and SSA
　　3.5.1. Temporal variation in phosphorus concentrations
　　3.5.2. Temporal variation in phosphorus storage
　　3.5.3. Temporal variation in SSA values
　3.6. Bed sediment PP storage in the context of downstream suspended sediment-associated PP fluxes
4. Discussion
　4.1. Spatial differences in TP concentrations - between and within catchments
　4.2. Seasonal differences in concentrations of TP and P fractions
　4.3. Spatial variations in TP storage
　4.4. Seasonal variations in TP storage
　4.5. Comparisons with other studies
5. Conclusion
Acknowledgements
References

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