Azusa Oita
Biographic Data
| ID | 6019083 |
|---|---|
| NAME | Azusa Oita |
| GIVEN NAMES | Azusa |
| FAMILY NAME | Oita |
| SIGNATURE | OITA A |
| AFFILIATIONS | National Agriculture and Food Research Organization |
| ORCID | 0000-0002-1876-2033 |
| VERIFIED | Yes |
| TOTAL WORKS | 9 |
| TOTAL CITATIONS | 1 |
| WORKS AS AUTHOR | 9 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2016 |
| LATEST PUBLICATION YEAR | 2021 |
| H-INDEX | 1 |
Nitrogen and the food system
Nutrient-extended input–output (NutrIO) method for the food nitrogen footprint
Agro-food systems require nutrient input from several sources to provide food products and food-related services. Many of the nutrients are lost to the environment during supply chains, potentially threatening human and ecosystem health. Countries therefore need to reduce their nutrient/nitrogen footprints. These footprints are importantly affected by links between sectors. However, existing assessments omit the links between sectors, especially …
Drivers of global nitrogen emissions
Nitrogen is crucial for sustaining life. However, excessive reactive nitrogen (Nr) in the form of ammonia, nitrates, nitrogen oxides or nitrous oxides affects the quality of water, air and soil, resulting in human health risks. This study aims to assess the drivers of Nr emissions by analysing six determinants: nitrogen efficiency (Nr emissions per unit of production), production recipe (inter-sectoral dependencies), final demand composition (con…
Concealed nitrogen footprint in protein-free foods
The agro-food system satisfying human food demand releases heavy nitrogen (N) loads into the environment. The N footprint is an indicator of N loads from individual consumption of food as well as energy. A bottom-up approach called the ‘N-calculator method’ calculates the food N footprint using the N content in consumed foods, such that the N footprint of protein-free foods is treated as zero. This method underestimates the N footprint of protein…
Comparison of food supply system in China and Japan based on food nitrogen footprints estimated by a top-down method
Food nitrogen footprints (N-footprints) for China in 2013 and Japan in 2011 were estimated with a top-down method (the N-Input method). This method evaluates the new nitrogen input for food production in both the country of interest and the countries from which food is imported. The food N-footprints in China and Japan were 21.96 kg N capita –1 yr –1 and 18.44 kg N capita –1 yr –1 , respectively, which were similar to published values estimated w…
Reducing nitrogen footprints of consumer-level food loss and protein overconsumption in Japan, considering gender and age differences
The agro-food system perturbs the nitrogen (N) cycle through its N loads to the environment. The present study focused on food-related consumer-level N loads in Japan from 1961–2015, with a particular focus on food loss and protein overconsumption. Gender and age differences were also analyzed. Consumer-level food loss was negligible until the 1970s, when it began to slowly increase, accounting for an average of 13.2% of the annual net supply dur…
Food nitrogen footprint reductions related to a balanced Japanese diet
Nitrogen footprints
Nitrogen (N) management presents a sustainability dilemma: N is strongly linked to energy and food production, but excess reactive N causes environmental pollution. The N footprint is an indicator that quantifies reactive N losses to the environment from consumption and production of food and the use of energy. The average per capita N footprint (calculated using the N-Calculator methodology) of ten countries varies from 15 to 47 kg N capita−1 ye…
Substantial nitrogen pollution embedded in international trade
Nitrogen footprints
Nitrogen (N) management presents a sustainability dilemma: N is strongly linked to energy and food production, but excess reactive N causes environmental pollution. The N footprint is an indicator that quantifies reactive N losses to the environment from consumption and production of food and the use of energy. The average per capita N footprint (calculated using the N-Calculator methodology) of ten countries varies from 15 to 47 kg N capita−1 ye…
Substantial nitrogen pollution embedded in international trade
Nitrogen footprints
Nitrogen (N) management presents a sustainability dilemma: N is strongly linked to energy and food production, but excess reactive N causes environmental pollution. The N footprint is an indicator that quantifies reactive N losses to the environment from consumption and production of food and the use of energy. The average per capita N footprint (calculated using the N-Calculator methodology) of ten countries varies from 15 to 47 kg N capita−1 ye…
Reducing nitrogen footprints of consumer-level food loss and protein overconsumption in Japan, considering gender and age differences
The agro-food system perturbs the nitrogen (N) cycle through its N loads to the environment. The present study focused on food-related consumer-level N loads in Japan from 1961–2015, with a particular focus on food loss and protein overconsumption. Gender and age differences were also analyzed. Consumer-level food loss was negligible until the 1970s, when it began to slowly increase, accounting for an average of 13.2% of the annual net supply dur…
Food nitrogen footprint reductions related to a balanced Japanese diet
Concealed nitrogen footprint in protein-free foods
The agro-food system satisfying human food demand releases heavy nitrogen (N) loads into the environment. The N footprint is an indicator of N loads from individual consumption of food as well as energy. A bottom-up approach called the ‘N-calculator method’ calculates the food N footprint using the N content in consumed foods, such that the N footprint of protein-free foods is treated as zero. This method underestimates the N footprint of protein…
Comparison of food supply system in China and Japan based on food nitrogen footprints estimated by a top-down method
Food nitrogen footprints (N-footprints) for China in 2013 and Japan in 2011 were estimated with a top-down method (the N-Input method). This method evaluates the new nitrogen input for food production in both the country of interest and the countries from which food is imported. The food N-footprints in China and Japan were 21.96 kg N capita –1 yr –1 and 18.44 kg N capita –1 yr –1 , respectively, which were similar to published values estimated w…
Nitrogen and the food system
Nutrient-extended input–output (NutrIO) method for the food nitrogen footprint
Agro-food systems require nutrient input from several sources to provide food products and food-related services. Many of the nutrients are lost to the environment during supply chains, potentially threatening human and ecosystem health. Countries therefore need to reduce their nutrient/nitrogen footprints. These footprints are importantly affected by links between sectors. However, existing assessments omit the links between sectors, especially …
Drivers of global nitrogen emissions
Nitrogen is crucial for sustaining life. However, excessive reactive nitrogen (Nr) in the form of ammonia, nitrates, nitrogen oxides or nitrous oxides affects the quality of water, air and soil, resulting in human health risks. This study aims to assess the drivers of Nr emissions by analysing six determinants: nitrogen efficiency (Nr emissions per unit of production), production recipe (inter-sectoral dependencies), final demand composition (con…
Economics (8 works) · Environmental Science (8 works) · Agricultural economics (7 works) · Chemistry (7 works) · Agriculture Sustainability and Environmental Impact (6 works) · Nitrogen (6 works) · Biology (5 works) · Environmental Impact and Sustainability (5 works) · Natural resource economics (5 works) · Per capita (5 works)