Looking back to move forward: Restoring vegetated canals to meet missing Water Framework Directive goals in agricultural basins DOI Creative Commons
Elisa Soana, Anna Gavioli,

Federica Neri

et al.

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 905, P. 167331 - 167331

Published: Sept. 23, 2023

Nitrate pollution and eutrophication remain pressing issues in Europe regarding the quality of aquatic ecosystems safety drinking water. Achieving water goals under Water Framework Directive (WFD) has proven to be particularly challenging agricultural catchments, where high nitrate concentrations are main reason for failure many bodies meet a good ecological status. Canals ditches common man-made features irrigated drained landscapes and, when vegetated, have recently been identified as denitrification hotspots. By combining experimental data GIS-based upscaling estimation, potential capacity canal network reduce loads was quantified several scenarios differing level extent length conservative management practices implemented. The analysis carried out lowlands Po River basin, which is largest hydrographic system Italy global hotspot nitrogen inputs eutrophication. Scenario simulations showed that maintaining vegetation at least 25 % length, selecting sites with availability (>2.4 mg N L-1), would promote greater permanent removal. increased load reduction target required achieve WFD status waters draining into Adriatic Sea during spring-summer months, risk higher. Promoting by postponing mowing in-stream end growing season could an effective mitigation strategy improve basins contribute achieving goals.

Language: Английский

Distribution, sources and main controlling factors of nitrate in a typical intensive agricultural region, northwestern China: Vertical profile perspectives DOI
Dan Wang, Peiyue Li, Ningning Yang

et al.

Environmental Research, Journal Year: 2023, Volume and Issue: 237, P. 116911 - 116911

Published: Aug. 18, 2023

Language: Английский

Citations

36
Recent regional changes in nutrient fluxes of European surface waters DOI Creative Commons
Olga Vigiak, Ángel Udías, Bruna Grizzetti

et al.

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 858, P. 160063 - 160063

Published: Nov. 8, 2022

We have quantified inputs and fate of nutrients in European fresh marine waters from 1990 to 2018. used the conceptual model GREEN assess impact efforts on curbing nutrient pollution regions. In first two decades, i.e. 1990s through start new millennium, decreased significantly. Nutrient freshwaters sea largely reduced all regions, although at different pace. However, around 2008-2010 trends changed, marking an increase last decade, particularly agricultural diffuse sources. some current are close those estimated beginning 1990s. At end study period, concentrations remain above thresholds congruent with good ecological status water bodies most downstream reaches. policies tackling point sources reach their maximum impact. face this approaching ceiling, sustainable management land becomes pivotal for effective control river basins. The regional approach highlighted differences across Europe that may provide tailored opportunities plan strategies achieving environmental targets.

Language: Английский

Citations

27
Attribution and driving force of nitrogen losses from the Taihu Lake Basin by the InVEST and GeoDetector models DOI Creative Commons

Xinghua He,

Jiaming Tian,

Zhang Yan-qin

et al.

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: May 8, 2023

Quantifying temporal and spatial changes in reactive nitrogen (Nr) losses from a watershed exploring its main drivers are the key to water quality improvements. Huge Nr continue threaten safety of environment Taihu Lake Basin (TLB). Here, InVEST GeoDetector models were combined estimate TLB 1990 2020 explore driving forces. Different scenarios for compared, showing that loss peaked at 181.66 × 103 t 2000. The factors affecting land use, followed by elevation, soil, slope factors, their mean q-values 0.82, 0.52, 0.51, 0.48, respectively. scenario analysis revealed increased under business-as-usual economic development scenarios, while ecological conservation, nutrient use efficiency, reduced application all contribute reduction losses. findings provide scientific reference control future planning TLB.

Language: Английский

Citations

15
The transcription factors, STOP1 and TCP20, are required for root system architecture alterations in response to nitrate deficiency DOI Creative Commons
Mutsutomo Tokizawa, Takuo Enomoto, Rahul Chandnani

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2023, Volume and Issue: 120(35)

Published: Aug. 23, 2023

Nitrate distribution in soils is often heterogeneous. Plants have adapted to this by modifying their root system architecture (RSA). Previous studies showed that NITRATE-TRANSPORTER1.1 (NRT1.1), which also transports auxin, helps inhibit lateral primordia (LRP) emergence nitrate-poor patches, preferentially transporting auxin away from the LRP. In study, we identified regulatory for response involving transcription factor (TF), SENSITIVE-TO-PROTON-RHIZOTOXICITY1 (STOP1), accumulated nuclei of LRP cells under nitrate deficiency and directly regulates Arabidopsis NRT1.1 expression. Mutations STOP1 mimic phenotype loss-of-function mutant deficiency, compared wild-type plants, including increased LR growth higher DR5promoter activity (i.e., signaling/activity). deficiency–induced inhibition was almost completely reversed when TF, TEOSINTE-BRANCHED1,-CYCLOIDEA,-PCF-DOMAIN-FAMILY-PROTEIN20 (TCP20), a known activator expression, were both mutated. Thus, STOP1-TCP20 required activation expression leading reduced regions. We found STOP1-mediated more active as media becomes acidic, correlates with reductions soil pH acidic. has been shown be involved RSA modifications phosphate potassium uptake, hence, our findings indicate regulation low availability major fertilizer nutrients, nitrogen, phosphorus potassium, all involve STOP1, may allow plants maintain appropriate complex varying nutrients.

Language: Английский

Citations

15
Long-term water quality monitoring in agricultural catchments in Sweden: Impact of climatic drivers on diffuse nutrient loads DOI Creative Commons
Golnaz Ezzati, Katarina Kyllmar, Jennie Barron

et al.

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 864, P. 160978 - 160978

Published: Dec. 20, 2022

Water quality related to non-point source pollution continues pose challenges in agricultural landscapes, despite two completed cycles of Framework Directive actions by farmers and landowners. Future climate projections will cause new landscape hydrology subsequently, the potential responses water quality. Investigating nutrient trends surface waters studying efficiency mitigation measures revealed that loads are highly variable both spatially temporally catchments with different agro-climatic environmental conditions. In Sweden, nitrogen phosphorus eight (470-3300 ha) have been intensively monitored for >20 years. This study investigated relationship between precipitation, air temperature, discharge patterns relation (N) (P) at catchment outlets. The time series data analysis was carried out integrating Mann-Kendall test, Pettitt break-points, Generalized Additive Model. results showed depend on discharge, which had large variation annual average (158-441 mm yr-1). were also considerably among total N (TN) ranging from 6.76 35.73 kg ha-1, P (TP) 0.11 1.04 ha-1. climatic drivers significant indicators but varying degree significance. Precipitation (28-962 yr-1) a indicator TN five (loamy sand/sandy loam) while temperature (6.5-8.7 °C driver six catchments. TP associated precipitation significantly correlated Considering more frequent occurrence extreme weather events, it is necessary tailor future climate-change features discharge.

Language: Английский

Citations

21
High nitrous oxide emissions from temporary flooded depressions within croplands DOI Creative Commons
Bo Elberling, Gyula Mate Kovács, Hans Frederik Engvej Hansen

et al.

Communications Earth & Environment, Journal Year: 2023, Volume and Issue: 4(1)

Published: Dec. 8, 2023

Abstract Nitrous oxide is an important greenhouse gas and emissions from managed ecosystems are directly correlated to anthropogenic nitrogen input. Here we have measured nitrous flooded depressions within croplands incubated soil samples. We scaled >20,000 comparable across Zealand in Denmark using a deep-learning approach based on aerial photos satellite images. show that cultivated fields, representing less than 1% of the total area, can release 80 times more compared rest fields. Fluxes remain high for two months after fertilisation account 30 ± budget during period. This highlights urgent need assessment hotspots, as managing these hotspots appear represent part overall efficient mitigation action.

Language: Английский

Citations

11
Groundwater nitrate problem and countermeasures in strongly affected EU countries—a comparison between Germany, Denmark and Ireland DOI
Felix Ortmeyer, Birgitte Hansen, Andre Banning

et al.

Grundwasser, Journal Year: 2022, Volume and Issue: 28(1), P. 3 - 22

Published: Dec. 15, 2022

Language: Английский

Citations

15
Impacts of changing weather patterns on the dynamics of water pollutants in agricultural catchments: Insights from 11-year high temporal resolution data analysis DOI Creative Commons
Golnaz Ezzati, Adrian L. Collins, Simon Pulley

et al.

Journal of Hydrology, Journal Year: 2024, Volume and Issue: unknown, P. 132122 - 132122

Published: Sept. 1, 2024

Language: Английский

Citations

3
Prediction of winter wheat nitrogen status using UAV imagery, weather data, and machine learning DOI Creative Commons
Takashi Tanaka, René Gislum

European Journal of Agronomy, Journal Year: 2025, Volume and Issue: 164, P. 127534 - 127534

Published: Feb. 4, 2025

Language: Английский

Citations

0
Agricultural nitrogen loss and downstream effects in the transboundary La Plata basin driven by soybean rotations DOI
Hua Yan, Latif Kalin, Hui Peng

et al.

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 380, P. 125159 - 125159

Published: April 1, 2025

Language: Английский

Citations

0