Nitrogen flows in the food production chain of Hungary over the period 1961–2010

Hou, Yong; Ma, Lin; Sárdi, Katalin; Sisák, István; Ma, Wenqi

doi:10.1007/s10705-015-9703-8

Cited by 10 publications

(3 citation statements)

References 31 publications

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“…Considering the soil N budget at the Po River watershed level, the agricultural areas with the highest N surpluses correspond to the studied watersheds [86]. Such excesses of N are among the highest reported in Europe and North America [87][88][89][90][91][92]. The average areal surplus peaked in the Oglio watershed portion (193 kg N ha −1 year −1 ), and was similar for Adda and Mincio (139 and 136 kg N ha −1 year −1 , respectively).…”

Section: Excess Manure Availability and Use Of Synthetic Fertilizers mentioning

confidence: 80%

Is Flood Irrigation a Potential Driver of River-Groundwater Interactions and Diffuse Nitrate Pollution in Agricultural Watersheds?

Racchetti

Salmaso

Pinardi

et al. 2019

Water

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In the Po plain, northern Italy, rivers within agricultural basins display steep summer increases in nitrate (NO3−) concentrations. Flood irrigation in overfertilized, permeable soils may drive such diffuse pollution, facilitating interactions between NO3−-rich groundwater and surface waters. We discuss multiple, indirect evidence of this mechanism in the Adda, Oglio, and Mincio rivers. These rivers drain agricultural soils with elevated nitrogen (N) surpluses, averaging 139, 193, and 136 kg ha−1 in the Adda, Oglio, and Mincio watersheds, respectively. The three rivers cross a transitional area between highly permeable and impermeable soils, where summer NO3− concentrations may increase by one order of magnitude over short distances (8–20 km). Upstream of this transitional area, a major fraction of the river flow is diverted for flood irrigation, a traditional and widespread irrigation technique for permeable soils. We speculate that diverted water solubilizes soil N excess, recharges the aquifer, and transfers soil N surplus into groundwater, resulting in NO3− pollution. Groundwater–river interactions were estimated experimentally, via water and NO3− budgets in 0.3 to 1 m3 s−1 km−1 and in 1500 to 5400 kg NO3−–N day−1. The data suggest a pronounced east–west gradient of groundwater to river diffuse water inputs among the three adjacent basins, reflecting the soil permeability and the width of the river–groundwater interaction zone. Given the large stock of NO3− in groundwater, management interventions performed at the basin scale and aimed at decreasing N excess will not produce an immediate decrease in river NO3− pollution.

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Section: Excess Manure Availability and Use Of Synthetic Fertilizers mentioning

confidence: 80%

Is Flood Irrigation a Potential Driver of River-Groundwater Interactions and Diffuse Nitrate Pollution in Agricultural Watersheds?

Racchetti

Salmaso

Pinardi

et al. 2019

Water

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“…Our modeling approach is based on the two existing and evaluated models: MARINA and NUFER. These models were specifically developed for China , and have been implemented for the world, Europe, India, and Africa . In particular, the MARINA model results are also evaluated for China by comparing the modeled results with measurements at the river mouth of the Yangtze for the year 2012 .…”

Section: Methodsmentioning

confidence: 99%

Nitrogen in the Yangtze River Basin: Pollution Reduction through Coupling Crop and Livestock Production

Chen

Wang

Kroeze

et al. 2022

Environ. Sci. Technol.

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Livestock production poses a threat to water quality worldwide. A better understanding of the contribution of individual livestock species to nitrogen (N) pollution in rivers is essential to improve water quality. This paper aims to quantify inputs of dissolved inorganic nitrogen (DIN) to the Yangtze River from different livestock species at multiple scales and explore ways for reducing these inputs through coupling crop and livestock production. We extended the previously developed model MARINA (Model to Assess River Input of Nutrient to seAs) with the NUFER (Nutrient flows in Food chains, Environment, and Resource use) approach for livestock. Results show that DIN inputs to the Yangtze River vary across basins, sub-basins, and 0.5° grids, as well as across livestock species. In 2012, livestock production resulted in 2000 Gg of DIN inputs to the Yangtze River. Pig production was responsible for 55–85% of manure-related DIN inputs. Rivers in the downstream sub-basin received higher manure-related DIN inputs than rivers in the other sub-basins. Around 20% of the Yangtze basin is considered as a manure-related hotspot of river pollution. Recycling manure on cropland can avoid direct discharges of manure from pig production and thus reduce river pollution. The potential for recycling manure is larger in cereal production than in other crop species. Our results can help to identify effective solutions for coupling crop and livestock production in the Yangtze basin.

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“…The NUFER model has been used to analyze the effects of urban expansion of Beijing, China on N and P flows for the period 1978 to 2008 . NUFER has also been used for several case studies at regional level in China (Strokal et al, 2016;, and for case studies in Hungary (Hou et al, 2015) and Kenya (Dorris, 2020). NUFER (NUtrient flows in Food chains, Environment and Resources use) is a 'static' model, developed to analyze N and P use efficiencies and losses in crop and animal production, food processing and consumption in rural and urban households at regional level.…”

Section: Model Calculationsmentioning

confidence: 99%

Nutrient use and recycling in urban, peri-urban and rural farms in Ethiopia

Tadesse

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Nitrogen flows in the food production chain of Hungary over the period 1961–2010

Cited by 10 publications

References 31 publications

Is Flood Irrigation a Potential Driver of River-Groundwater Interactions and Diffuse Nitrate Pollution in Agricultural Watersheds?

Is Flood Irrigation a Potential Driver of River-Groundwater Interactions and Diffuse Nitrate Pollution in Agricultural Watersheds?

Nitrogen in the Yangtze River Basin: Pollution Reduction through Coupling Crop and Livestock Production

Nutrient use and recycling in urban, peri-urban and rural farms in Ethiopia

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