TY - JOUR
T1 - Climate change impacts on contaminant loads delivered with sediment yields from different land use types in a Carpathian basin
AU - Szalińska, Ewa
AU - Zemełka, Gabriela
AU - Kryłów, Małgorzata
AU - Orlińska-Woźniak, Paulina
AU - Jakusik, Ewa
AU - Wilk, Paweł
N1 - Funding Information:
This research was partially funded by the National Science Center, Poland (research grant No. 2016/23/N/ST10/01292). Modeling was performed as a part of the Polish Institute of Meteorology and Water Management FBW-6 and FBW-7 statutory tasks. The Authors are very grateful to Dr. Gord Paterson for his statistical insight.
Funding Information:
This research was partially funded by the National Science Center, Poland (research grant No. 2016/23/N/ST10/01292 ). Modeling was performed as a part of the Polish Institute of Meteorology and Water Management FBW-6 and FBW-7 statutory tasks. The Authors are very grateful to Dr. Gord Paterson for his statistical insight.
Publisher Copyright:
© 2020 The Author(s)
PY - 2021/2/10
Y1 - 2021/2/10
N2 - Soil runoff and sediment transport are considered as an important vector for particle-bound contaminant transfer from source to receiving waters. Under changing climate conditions and rapid basin development, identification of sediment origins is critical for planning further action to reduce erosion effects, and further pollution to surface waters. The goal of this study was to distinguish sediment sources in a Carpathian basin (Wolnica River, southern Poland) and to perform source-oriented contaminant load estimations. Sediment yields (SYLD) and land use specific sediment yields (LUSY) were modeled with the use of the Macromodel DNS/SWAT (Discharge-Nutrients-Sea/Soil and Water Assessment Tool). Sorting of sediment sources was performed by the fingerprinting method using variability of the geochemical composition of soils (Pb, Zn, Cd, Cu, Mn, Ni, Fe, Hg, total N and P, Σ16 PAHs, and 137Cs) of four land use (LU) types: arable lands (A), grasslands (G), residential areas (R), and forests (F). Statistical analysis revealed six metals (Pb, Zn, Cd, Cu, Ni, and Hg) as fingerprint properties providing the best source discrimination in this basin. The contribution of particular land use origin assessed with the use of the mixing model varied in the range of 20–30%. Finally, estimation of land use specific contaminant loads in suspended sediments was performed as a result of a modeling and sediment fingerprinting combination. The final estimates revealed yearly LUSY values varying between 716 t/y for A, 12 t/y for F, and metal loads from 31 kg/y for Zn to values below 100 g/y for Cd and Hg. Long-term predictions (2046–2055) of the metal loads revealed an increase by 75% under the combined RCP 8.5 climate change and land use scenarios. These findings are of great value for land management in the Carpathian basins, especially with regards to the predicted increase of forest cover which significantly alters contaminant signals conveyed through the system.
AB - Soil runoff and sediment transport are considered as an important vector for particle-bound contaminant transfer from source to receiving waters. Under changing climate conditions and rapid basin development, identification of sediment origins is critical for planning further action to reduce erosion effects, and further pollution to surface waters. The goal of this study was to distinguish sediment sources in a Carpathian basin (Wolnica River, southern Poland) and to perform source-oriented contaminant load estimations. Sediment yields (SYLD) and land use specific sediment yields (LUSY) were modeled with the use of the Macromodel DNS/SWAT (Discharge-Nutrients-Sea/Soil and Water Assessment Tool). Sorting of sediment sources was performed by the fingerprinting method using variability of the geochemical composition of soils (Pb, Zn, Cd, Cu, Mn, Ni, Fe, Hg, total N and P, Σ16 PAHs, and 137Cs) of four land use (LU) types: arable lands (A), grasslands (G), residential areas (R), and forests (F). Statistical analysis revealed six metals (Pb, Zn, Cd, Cu, Ni, and Hg) as fingerprint properties providing the best source discrimination in this basin. The contribution of particular land use origin assessed with the use of the mixing model varied in the range of 20–30%. Finally, estimation of land use specific contaminant loads in suspended sediments was performed as a result of a modeling and sediment fingerprinting combination. The final estimates revealed yearly LUSY values varying between 716 t/y for A, 12 t/y for F, and metal loads from 31 kg/y for Zn to values below 100 g/y for Cd and Hg. Long-term predictions (2046–2055) of the metal loads revealed an increase by 75% under the combined RCP 8.5 climate change and land use scenarios. These findings are of great value for land management in the Carpathian basins, especially with regards to the predicted increase of forest cover which significantly alters contaminant signals conveyed through the system.
KW - Fingerprinting method
KW - Macromodel DNS/SWAT
KW - Metals
KW - Sediment production
KW - SYLD
KW - Variant scenarios
UR - http://www.scopus.com/inward/record.url?scp=85093702638&partnerID=8YFLogxK
U2 - 10.1016/j.scitotenv.2020.142898
DO - 10.1016/j.scitotenv.2020.142898
M3 - Article
C2 - 33348488
AN - SCOPUS:85093702638
SN - 0048-9697
VL - 755
JO - Science of the Total Environment
JF - Science of the Total Environment
M1 - 142898
ER -