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How does forest fine root litter affect the agricultural soil NH and NO losses?
J Environ Manage
January 2025
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China. Electronic address:
In farmland shelterbelt systems, the decomposition and/or apoptosis of forest fine root litter could affect farmland soil properties at the tree-crop interface, particularly the soil nitrogen (N) cycling. However, how fine root litter affect the ammonia (NH) and nitrous oxide (NO) losses from farmland soil and the crop production is little known. A soil column experiment covering a whole rice season was conducted to evaluate the dynamics aforesaid in response to fine root litter of Populus (RP) and Metasequoia glyptostroboides (RM) with 0 and 240 kg ha N fertilizer input.
View Article and Find Full Text PDFA mechanistic model for determining factors that influence inorganic nitrogen fate in corn cultivation.
Environ Sci Process Impacts
January 2025
Department of Civil and Environmental Engineering, University of Pittsburgh, Pittsburgh, PA, USA.
Conventional practices for inorganic nitrogen fertilizer are highly inefficient leading to excess nitrogen in the environment. Excess environmental nitrogen induces ecological (, hypoxia, eutrophication) and public health (, nitrate contaminated drinking water) consequences, motivating adoption of management strategies to improve fertilizer use efficiency. Yet, how to limit the environmental impacts from inorganic nitrogen fertilizer while maintaining crop yields is a persistent challenge.
View Article and Find Full Text PDFEffectiveness Overview of Agricultural Conservation Practices for Water Quality Improvement Part II.
J Nat Resour Agric Ecosyst
January 2024
Office of Research and Development, USA Environmental Protection Agency, Research Triangle Park, North Carolina, USA.
Article Synopsis
- Significant government investment in agricultural conservation practices (ACPs) aimed at improving water quality is not fully effective, with ongoing issues of eutrophication and hypoxia in water bodies.
- An overview of ten ACPs reveals differences in performance and cost-effectiveness, particularly in reducing sediment, nitrogen (N), and phosphorus (P), with only three ACPs effectively addressing all three constituents.
- The article suggests that certain water management practices are notably effective in nutrient reduction, while others like conservation crop rotation show potential for economic benefits, underscoring the need for better financial prioritization and long-term monitoring to enhance outcomes.
A holistic study on the effects of a rural flood detention basin: Flood peaks, water quality and grass growth.
J Environ Manage
December 2024
School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland; Environmental Research Institute, Ellen Hutchins Building, University College Cork, Cork, Ireland.
Nature-based Solutions (NbS) are widely advocated to have multiple benefits, including in flood risk reduction, water quality improvement and ecosystem health. There are, however, few empirical studies quantifying such multi-functionality. Given the ongoing pressures of flooding and poor water quality within Europe, there is an urgent need for empirical evidence to assess the potential for NbS features to address these issues.
View Article and Find Full Text PDFNutrient loading as a key cause of short- and long-term anthropogenic ecological degradation of the Salton Sea.
Sci Rep
December 2024
Department of Earth and Planetary Sciences, University of California, Riverside, CA, 92521, USA.
The Salton Sea (SS), California's largest inland lake at 816 square kilometers, formed in 1905 from a levee breach in an area historically characterized by natural wet-dry cycles as Lake Cahuilla. Despite more than a century of untreated agricultural drainage inputs, there has not been a systematic assessment of nutrient loading, cycling, and associated ecological impacts at this iconic waterbody. The lake is now experiencing unprecedented degradation, particularly following the 2003 Quantification Settlement Agreement-the largest agricultural-to-urban water transfer in the United States.
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