Search Results - "N2O"
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Quantifying in situ N2 fluxes from an intensively managed calcareous soil using the 15N gas-flux method
Published 2022-01-01Subjects: Get full textDenitrification-induced nitrogen (N) losses from croplands may be greatly increased by intensive fertilization. However, the accurate quantification of these losses is still challenging due to insufficient available in situ measurements of soil dinitrogen (N2) emissions. We carried out two one-week...
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Optimized tillage methods increase mechanically transplanted rice yield and reduce the greenhouse gas emissions
Published 2024-04-01Subjects: Get full textBiaxial rotary tillage in dryland (DBRT) can complete biaxial rotary tillage with straw incorporation, secondary suppression, and ditching, and it has been previously studied in direct-seeded rice and wheat. However, the effects of DBRT on the mechanically transplanted rice yield and greenhouse gas...
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Estimates of N2O Emissions and Mitigation Potential from a Spring Maize Field Based on DNDC Model
Published 2012-12-01Subjects: Get full textAgricultural production plays an important role in affecting atmospheric nitrous oxide (N2O) concentrations. Field measurements were conducted in Dalian City, Liaoning Province in Northeast China from two consecutive years (2009 and 2010) to estimate N2O emissions from a spring maize field, a main c...
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Reduced Schiff-base derivatives to stop reactive oxygen species production by the Cu(A$\beta $) species: a structure–activity relationship
Published 2023-10-01Subjects: Get full textA${\beta }$ is the peptide involved in Alzheimer’s disease. Its binding to the redox copper ions and the subsequent production of reactive oxygen species (ROS) contributing to the overall oxidative stress observed in the disease is among the deleterious effects A${\beta }$ may have. Here seven reduc...
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Regulatory potential of soil available carbon, nitrogen, and functional genes on N2O emissions in two upland plantation systems
Published 2024-08-01Subjects: Get full textDynamic nitrification and denitrification processes are affected by changes in soil redox conditions, and they play a vital role in regulating soil N2O emissions in rice-based cultivation. It is imperative to understand the influences of different upland crop planting systems on soil N2O emissions....
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Assessing soil nitrous oxide emission as affected by phosphorus and nitrogen addition under two moisture levels
Published 2016-12-01Subjects: Get full textAgricultural soils are deficient of phosphorus (P) worldwide. Phosphatic fertilizers are therefore applied to agricultural soils to improve the fertility and to increase the crop yield. However, the effect of phosphorus application on soil N2O emissions has rarely been studied. Therefore, we conduct...
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Short-term P addition may improve the stimulating effects of N deposition on N2O emissions in alpine grasslands on the Qinghai-Tibetan Plateau
Published 2025-03-01Subjects: Get full textThe response of N2O emissions to nitrogen (N) addition is usually positive, but its response to phosphorus (P) addition varies, and the underlying mechanisms for the changes in N2O emissions remain unclear. We conducted field studies to examine the response of N2O emissions to N and P addition over...
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Effect of Biogas Digested Liquid on CH4 and N2O Flux in Paddy Ecosystem
Published 2014-03-01Subjects: Get full textBiogas production generates digested slurry as a byproduct. It can be used as a fertilizer especially after its conversion into digested liquid. A pot based study was conducted in order to evaluate the effect of the application of digested liquid on CH4 and N2O flux, and plant biomass in paddy. Anal...
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A combination of straw incorporation and polymer-coated urea offsets soil ammonia and nitrous oxide emissions in winter wheat fields
Published 2024-05-01Subjects: Get full textThe combined effects of straw incorporation (SI) and polymer-coated urea (PCU) application on soil ammonia (NH3) and nitrous oxide (N2O) emissions from agricultural fields have not been comprehensively evaluated in Northwest China. We conducted a two-year field experiment to assess the effects of co...
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Closing the nitrogen use efficiency gap and reducing the environmental impact of wheat-maize cropping on smallholder farms in the Guanzhong Plain, Northwest China
Published 2019-01-01Subjects: Get full textA high crop yield with the minimum possible cost to the environment is generally desirable. However, the complicated relationships among crop production, nitrogen (N) use efficiency and environmental impacts must be clearly assessed. We conducted a series of on-farm N application rate experiments to...
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Assessment of the crucial factors influencing the responses of ammonia and nitrous oxide emissions to controlled release nitrogen fertilizer: A meta-analysis
Published 2023-11-01Subjects: Get full textReducing ammonia (NH3) and nitrous oxide (N2O) emissions have great effects on mitigating nitrogen (N) nutrient loss and greenhouse gas emissions. Controlled release urea (CRU) can control the N release rate, which reduces reactive N loss and increases nitrogen use efficiency relative to conventiona...
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New Tetra-dentate Schiff Base Ligand N2O2 and Its Complexes with Some of Metal Ions: Preparation, Identification, and Studying Their Enzymatic and Biological Activities
Published 2022-02-01Subjects: “…Tetradentate (N2O2) Schiff base complexes, acetylcholinesterase (AChE) activity, Anti-bacterial and antifungal.…”In present work, new tetra-dentate ligand, titled 3,5-bis ((E)-5-Bromo-2-hydroxy benzylidene amino) benzoic acid (H3L), was prepared via an acid-catalyzed condensation process. New four metallic ligand complexes with Co(II), Ni(II), Cu(II) and Zn(II) ions, were also prepared from the refluxing of eq...
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Nitrogen cycling and environmental impacts in upland agricultural soils in North China: A review
Published 2017-12-01Subjects: Get full textThe upland agricultural soils in North China are distributed north of a line between the Kunlun Mountains, the Qinling Mountains and the Huaihe River. They occur in arid, semi-arid and semi-humid regions and crop production often depends on rain-fed or irrigation to supplement rainfall. This paper s...
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Nitrous oxide emissions following seasonal freeze-thaw events from arable soils in Northeast China
Published 2018-01-01Subjects: “…N2O…”Seasonal soil freeze-thaw events may enhance soil nitrogen transformation and thus stimulate nitrous oxide (N2O) emissions in cold regions. However, the mechanisms of soil N2O emission during the freeze-thaw cycling in the field remain unclear. We evaluated N2O emissions and soil biotic and abiotic...
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Soil mineral nitrogen and yield-scaled soil N2O emissions lowered by reducing nitrogen application and intercropping with soybean for sweet maize production in southern China
Published 2017-11-01Subjects: Get full textThe increasing demand for fresh sweet maize (Zea mays L. saccharata) in southern China has prioritized the need to find solutions to the environmental pollution caused by its continuous production and high inputs of chemical nitrogen fertilizers. A promising method for improving crop production and...
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