Influence of seasonal and annual hydrological variations on erosion and phosphorus transport from arable areas in Finland

Puustinen, Markku; Tattari, Sirkka; Koskiaho, Jari; Linjama, Jarmo

doi:10.1016/j.still.2006.03.011

Cited by 105 publications

(69 citation statements)

References 7 publications

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“…5a). Eroded sediments are typically enriched with P relative to the bulk soil (up to a factor of five times) due to the preferential removal of fine soil particles having a greater P content (Sharpley et al 2002;Puustinen et al 2007). Fractional export of NAPI by rivers is also dependent on the number of storm events ([50 mm per 24 h, Fig.…”

Section: Long-term Fate Of Anthropogenic P Inputsmentioning

confidence: 99%

Influence of legacy phosphorus, land use, and climate change on anthropogenic phosphorus inputs and riverine export dynamics

Chen

Guo

et al. 2014

Biogeochemistry

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A quantitative understanding of riverine phosphorus (P) export in response to changes in anthropogenic P inputs (NAPI), land use and climate is critical for developing effective watershed P control measures. This study indicated that annual riverine TP export for the six catchments of the Yongan River watershed in eastern China increased 4.1-30.3-fold over the 1980-2010 period. Increased riverine TP export resulted from a 61-85 % increase in NAPI and a 2.6-14.6-fold increase in riverine export fraction of NAPI due to 36-43, 30-125, and 65-76 % increases in developed land area (D%), drained agricultural land area (DA%), and storm events, respectively. For the 31-year cumulative record, 1.6-14 % of NAPI was exported by rivers, 40-64 % was stored in the upper 20 cm of agricultural soils, and 30-55 % was retained in other landscape positions. An empirical model that incorporates annual NAPI, precipitation, D%, and DA% accounted for 94 % of the variation in annual riverine TP fluxes across the six catchments and 31 years. The model estimated that NAPI and legacy P contributed 42-92 % and 8-58 % of annual riverine TP flux, respectively. The model forecasts an 8-18 % increase in riverine TP flux by 2030 due to a 4 % increase in precipitation with no changes in NAPI and land use compared to the 2000-2010 baseline condition. Enhanced export of NAPI and legacy P by changes in land use and climate will delay the decrease in riverine P flux in response to NAPI reductions and should be considered in developing and assessing watershed P management strategies.

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Section: Long-term Fate Of Anthropogenic P Inputsmentioning

confidence: 99%

Influence of legacy phosphorus, land use, and climate change on anthropogenic phosphorus inputs and riverine export dynamics

Chen

Guo

et al. 2014

Biogeochemistry

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“…As a result, the P concentration of eroded sediments increased (with no increase in TSS between 1980 and 2010, Fig. 2c), since fine soil particles having a greater P content can be transported preferentially via erosion (Puustinen et al, 2007). Increasing NPS P inputs may also be associated with increasing agricultural land area having efficient drainage systems (R 2 = 0.47, p b 0.01) and increasing developed land area (R 2 = 0.46, p b 0.01) (Supplementary material: Fig.…”

Section: Tablementioning

confidence: 99%

Reconstructing historical changes in phosphorus inputs to rivers from point and nonpoint sources in a rapidly developing watershed in eastern China, 1980–2010

Chen

Guo

et al. 2015

Science of The Total Environment

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“…The driving hydrological events were irrigation in dry periods of the crop growing season for the IRF channel, and precipitation in wet periods of the growing season for the main channel. Both hydrological event and source type are determining factors for sediment generation, delivery, and transport (Puustinen et al 2007;Gellis and Noe 2013;Walling 2013). The differences in hydrological characteristics and sediment sources explain the difference in the suspended sediment samples collected between the IRF channel and the main channel.…”

Section: Comparison Of Sediments Among the Six Monitoring Stationsmentioning

confidence: 99%

Determining sources of fine-grained sediment for a reach of the Lower Little Bow River, Alberta, using a colour-based sediment fingerprinting approach

et al. 2017

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Identifying the predominant sources of sediment is a key requirement for soil erosion control within watersheds. A 4 yr study from 2009 to 2012 was conducted to apportion sediment sources in a subcatchment of the Lower Little Bow River watershed, AB, Canada. This study catchment lies along a 6 km reach of the river, having an upstream inlet and downstream outlet; as such, it represents the first application of the sediment fingerprinting technique in a reach setting. Six monitoring stations were established along this reach of river to collect sediments using passive time-integrated sediment samplers. Source material samples were collected throughout the study catchment. Reflectance spectra of source and sediment samples were determined using a diffuse reflectance spectrometer. Source materials were classified into five sources using canonical discriminant analysis. Following the normality test, analysis of variance and stepwise discriminant function analysis, four colour coefficients were selected and fitted to the Bayesian mixing model of stable isotope analysis in R. The results indicated that the unknown upstream sediment source was the single largest (37.4%) contributor of sediments, suggesting that there is sediment coming from a significant source or sources not represented within the study catchment. Irrigation return flow channels were the second largest contributor (25.6%), while the third largest contributor, agricultural land, had a minimal contribution (9.2%). Source contribution had a small spatial but large temporal variation. The results indicated that identifying the origin of secondary sediment sources of upstream and irrigation flow channels is a critical step for soil erosion control in the study subwatershed.Key words: colour coefficient, fingerprinting, MixSIAR, sediment sources.Résumé : Identifier les sources principales de sédiments est une exigence capitale lorsqu'on veut combattre l'érosion du sol dans un bassin hydrographique. De 2009 à 2012, les auteurs ont entrepris une étude visant à établir les sources de sédimentation d'un bassin versant secondaire de la Lower Little Bow River, en Alberta. Le bassin en question se situe le long d'un tronçon de six kilomètres de la rivière et compte une entrée en amont ainsi qu'un exutoire en aval. En tant que telle, l'étude correspond à la première application d'une technique de cartographie des sédiments dans un bief. Six postes de surveillance ont été aménagés le long du bief et les sédiments ont été recueillis au moyen de systèmes d'échantillonnage passif intégré dans le temps. Les échantillons de matériaux d'origine ont été glanés à la grandeur du bassin versant à l'étude. Le spectre de réflectance des échantillons prélevés à la source et des sédiments a été établi avec un spectromètre à réflectance diffuse. Les matériaux d'origine ont été répartis entre cinq sources par analyse discriminante canonique. À partir des résultats du test de normalité, de l'analyse de la variance et de l'analyse discriminante des fonctions pas à pas, les ...

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Influence of seasonal and annual hydrological variations on erosion and phosphorus transport from arable areas in Finland

Cited by 105 publications

References 7 publications

Influence of legacy phosphorus, land use, and climate change on anthropogenic phosphorus inputs and riverine export dynamics

Influence of legacy phosphorus, land use, and climate change on anthropogenic phosphorus inputs and riverine export dynamics

Reconstructing historical changes in phosphorus inputs to rivers from point and nonpoint sources in a rapidly developing watershed in eastern China, 1980–2010

Determining sources of fine-grained sediment for a reach of the Lower Little Bow River, Alberta, using a colour-based sediment fingerprinting approach

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