Inadequacy of agricultural best management practices under warmer climates DOI Creative Commons

Mohamed Khalil Zammali,

Ali Nazemi, Elmira Hassanzadeh

et al.

Environmental Research Letters, Journal Year: 2024, Volume and Issue: 19(12), P. 124067 - 124067

Published: Nov. 14, 2024

Abstract Agricultural best management practices (BMPs) are often implemented to reduce nutrient transport from farmland downstream waterbodies. However, under the scenario of a changing climate, processes may be altered and BMPs not as effective. Using an ensemble downscaled climate projections moderate high radiative forcings, we perform hybrid assessment in large, flat, primarily agricultural watershed Canadian Prairies. We quantify total nitrogen delivery current future scenarios, with without BMPs. Our findings reveal that BMP combinations, which currently sufficient historical conditions, become inadequate handle increased conditions. examine enhancement BMPs, conditioned mean projections. Although updated combinations show improvements both magnitude cost removal compared practices, their efficiency systematically declines temperature rises. The decline rate is significantly larger forcing. Even by implementing all considered that, at least some realizations status-quo state, no implemented, cannot maintained. study demonstrates reduced effectiveness warms. To combat this, recommend immediate implementation slow down build up nitrogen. innovations physical, chemical, biological remediation technologies would needed long term control loads coming farmlands.

Language: Английский

Assessment of Integrated BMPs for Subbasin-Scale Soil Erosion Reduction Considering Spatially Distributed Farmland Characteristics DOI Creative Commons
Jimin Lee, Seoro Lee,

Woon Ji Park

et al.

Agriculture, Journal Year: 2025, Volume and Issue: 15(8), P. 893 - 893

Published: April 20, 2025

Recent climate change has intensified extreme rainfall events, exacerbating soil erosion and agricultural nonpoint source pollution in South Korea’s steeply sloped farmlands. This study assessed reduction measures by applying individual Best Management Practices (BMPs) cropland expanding upon existing management efforts through the implementation of additional BMPs aimed at further reducing erosion. Furthermore, priority areas were identified based on efficiency within subbasins. For this evaluation, Soil Water Assessment Tool (SWAT) was employed, with a spatially distributed Hydrological Response Unit (SD-HRU) module calibrated Modified Universal Loss Equation (MUSLE) parameters tailored to Korean watershed conditions. Scenarios 1 2 implemented area evaluate BMP effectiveness controlling suspended sediment (SS) loads. Scenario applied set already place, while involved addition supplementary enhance control. resulted 34.6% annual 35.0% decrease SS concentration, whereas achieved 59.3% 57.3% concentration. Subbasin-scale evaluations revealed considerable spatial variability control efficiency, ranging from 1.3% 70.5%, highlighting necessity for targeted strategies. These results underscore importance employing adaptive approaches offer practical guidance enhancing sustainability, particularly regions vulnerable hydrometeorological events.

Language: Английский

Citations

0
Multiple remotely sensed datasets and machine learning models to predict chlorophyll-a concentration in the Nakdong River, South Korea DOI
Byeongwon Lee, Jong Kwon Im,

Ji Woo Han

et al.

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 24, 2024

Language: Английский

Citations

3
Inadequacy of agricultural best management practices under warmer climates DOI Creative Commons

Mohamed Khalil Zammali,

Ali Nazemi, Elmira Hassanzadeh

et al.

Environmental Research Letters, Journal Year: 2024, Volume and Issue: 19(12), P. 124067 - 124067

Published: Nov. 14, 2024

Abstract Agricultural best management practices (BMPs) are often implemented to reduce nutrient transport from farmland downstream waterbodies. However, under the scenario of a changing climate, processes may be altered and BMPs not as effective. Using an ensemble downscaled climate projections moderate high radiative forcings, we perform hybrid assessment in large, flat, primarily agricultural watershed Canadian Prairies. We quantify total nitrogen delivery current future scenarios, with without BMPs. Our findings reveal that BMP combinations, which currently sufficient historical conditions, become inadequate handle increased conditions. examine enhancement BMPs, conditioned mean projections. Although updated combinations show improvements both magnitude cost removal compared practices, their efficiency systematically declines temperature rises. The decline rate is significantly larger forcing. Even by implementing all considered that, at least some realizations status-quo state, no implemented, cannot maintained. study demonstrates reduced effectiveness warms. To combat this, recommend immediate implementation slow down build up nitrogen. innovations physical, chemical, biological remediation technologies would needed long term control loads coming farmlands.

Language: Английский

Citations

0