Modelling Nutrient Load Changes from Fertilizer Application Scenarios in Six Catchments around the Baltic Sea

Thodsen, Hans; Farkas, Csilla; Chormański, Jarosław; Trolle, Dennis; Blicher-Mathiesen, Gitte; Grant, Ruth; Engebretsen, Alexander Melvold; Kardel, Ignacy; Andersen, Hans Estrup

doi:10.3390/agriculture7050041

Cited by 17 publications

(8 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Only a limited number of studies on nutrient loads have analysed climate impacts combined with comprehensive socioeconomic changes. Most impact studies in the Baltic Sea Drainage Basin (BSDB) evaluated effects of nutrient reduction measures or land use changes (Wulff et al 2014; Thodsen et al 2017). Andersson and Arheimer (2003) made a historical reconstruction of nutrient pathways during 100 years of societal changes in a Swedish river basin, while Eriksson Hägg et al (2014) combined climate projections to the 2100s with scenarios of changes in population and their diet in the BSDB.…”

Section: Introductionmentioning

confidence: 99%

Future socioeconomic conditions may have a larger impact than climate change on nutrient loads to the Baltic Sea

Bartošová

Capell

Olesen

et al. 2019

Ambio

View full text Add to dashboard Cite

The Baltic Sea is suffering from eutrophication caused by nutrient discharges from land to sea, and these loads might change in a changing climate. We show that the impact from climate change by mid-century is probably less than the direct impact of changing socioeconomic factors such as land use, agricultural practices, atmospheric deposition, and wastewater emissions. We compare results from dynamic modelling of nutrient loads to the Baltic Sea under projections of climate change and scenarios for shared socioeconomic pathways. Average nutrient loads are projected to increase by 8% and 14% for nitrogen and phosphorus, respectively, in response to climate change scenarios. In contrast, changes in the socioeconomic drivers can lead to a decrease of 13% and 6% or an increase of 11% and 9% in nitrogen and phosphorus loads, respectively, depending on the pathway. This indicates that policy decisions still play a major role in climate adaptation and in managing eutrophication in the Baltic Sea region.Electronic supplementary materialThe online version of this article (10.1007/s13280-019-01243-5) contains supplementary material, which is available to authorized users.

show abstract

Section: Introductionmentioning

confidence: 99%

Future socioeconomic conditions may have a larger impact than climate change on nutrient loads to the Baltic Sea

Bartošová

Capell

Olesen

et al. 2019

Ambio

View full text Add to dashboard Cite

show abstract

“…Coupling of groundwater model with SWAT hydrological model to obtain detailed information on groundwater recharge rate and nitrate loads leached from soil. SWAT has already been used in a number of studies on the hydrological balance and nutrient transport in the Baltic region [38][39][40][41][42][43], including the Puck Bay region [44,45]. However, there has been no attempt to apply SWAT-MODFLOW coupling on the Polish Baltic coast.…”

mentioning

confidence: 99%

Evaluation of the Influence of Farming Practices and Land Use on Groundwater Resources in a Coastal Multi-Aquifer System in Puck Region (Northern Poland)

Szymkiewicz

Potrykus

Jaworska-Szulc

et al. 2020

Water

View full text Add to dashboard Cite

This study focuses on the modeling of groundwater flow and nitrate transport in a multi-aquifer hydrosystem in northern Poland, adjacent to Puck Bay (Baltic sea). The main goal was to investigate how changes in land use and farming practices may affect groundwater recharge and submarine groundwater discharge (SGD) to the sea and the associated N-NO3 fluxes. An integrated modelling approach has been developed, which couples the SWAT hydrologic model, MODFLOW-NWT groundwater flow model, and MT3DMS transport model. Transient simulations were performed for a 10 y period, assuming 10 different scenarios of land use (farming, grassland, forest) and crop types. Both recharge and SGD showed a distinct pattern of seasonal time variability. In terms of the average flow rates, the effect of varying crop type was more significant than that of land use change, with the minimum recharge and SGD corresponding to winter wheat and the maximum for peas and potatoes. Nitrate loads were strongly affected by both land use and crop type, with minimum values obtained for grassland and maximum values for canola.

show abstract

“…Although unable to differentiate the extent of fertilizer N runoff from other nutrient sources, Asmala et al [134] suggested that the best approach to reduce nutrient flows was to improve fertilizer use efficiency at the farm level. By performing simulations with SWAT model for six catchments with major agricultural crop production systems in the Baltic Sea drainage basin, Thodsen et al [135] estimated that a change in mineral fertilizer use of ± 20% increased watershed nitrate-N loads between 0 and ± 13%.…”

Section: The Baltic Seamentioning

confidence: 99%

Fertilizers and nitrate pollution of surface and ground water: an increasingly pervasive global problem

2021

View full text Add to dashboard Cite

Nitrate pollution of ground and surface water bodies all over the world is generally linked with continually increasing global fertilizer nitrogen (N) use. But after 1990, with more fertilizer N consumption in developing countries especially in East and South Asia than in the industrialized nations in North America and Europe, nitrate pollution of freshwaters is now increasingly becoming a pervasive global problem. In this review it has been attempted to review the research information generated during the last two decades from all over the world on different aspects of nitrate pollution of natural water bodies. It is now evident that not more than 50% of the fertilizer N is directly used by the crops to which it is applied. While a small portion may directly leach down and may reach ground and surface water bodies, a large proportion ends up in the soil organic N pool from where N is mineralized and is taken up by plants and/or lost via leaching during several decades. Present trends of nitrate pollution of freshwaters, therefore, reflect legacies of current and past applications of fertilizers and manures. Tools such as simulation models and the natural variation in the stable isotopes of N and oxygen are now being extensively used to study the contribution of fertilizers and other sources to nitrate enrichment of freshwaters. Impacts of agricultural stewardship measures are being assessed and nitrate enrichment of water bodies is being managed using modern digital models and frameworks. Improved water and fertilizer management in agroecosystems can reduce the contribution of fertilizers to nitrate pollution of water bodies but a host of factors determine the magnitude. Future research needs are also considered.

show abstract

Modelling Nutrient Load Changes from Fertilizer Application Scenarios in Six Catchments around the Baltic Sea

Cited by 17 publications

References 58 publications

Future socioeconomic conditions may have a larger impact than climate change on nutrient loads to the Baltic Sea

Future socioeconomic conditions may have a larger impact than climate change on nutrient loads to the Baltic Sea

Evaluation of the Influence of Farming Practices and Land Use on Groundwater Resources in a Coastal Multi-Aquifer System in Puck Region (Northern Poland)

Fertilizers and nitrate pollution of surface and ground water: an increasingly pervasive global problem

Contact Info

Product

Resources

About