Sadao Eguchi

Comment on egusphere-2026-2751

Shigeyuki Ishidoya, Takahisa Maeda, Hidehiko Kikuno, Jumpei Fukumasu et autres

Abstract. Soil chamber measurements of δ(O2/N2), CO2 amount fractions, and the δ(18O) of O2 in air (δatm(18O)) were conducted at a forest site in Takayama (TKY), Japan, and at agricultural fields in Tsukuba (TKB) and Miyakojima (MYK), Japan. The latter fields included …

jp (code pays fourni par la source)

Comment on egusphere-2026-2751

Shigeyuki Ishidoya, Takahisa Maeda, Hidehiko Kikuno, Jumpei Fukumasu et autres

Abstract. Soil chamber measurements of δ(O2/N2), CO2 amount fractions, and the δ(18O) of O2 in air (δatm(18O)) were conducted at a forest site in Takayama (TKY), Japan, and at agricultural fields in Tsukuba (TKB) and Miyakojima (MYK), Japan. The latter fields included …

jp (code pays fourni par la source)

Comment on egusphere-2026-2751

Shigeyuki Ishidoya, Takahisa Maeda, Hidehiko Kikuno, Jumpei Fukumasu et autres

Abstract. Soil chamber measurements of δ(O2/N2), CO2 amount fractions, and the δ(18O) of O2 in air (δatm(18O)) were conducted at a forest site in Takayama (TKY), Japan, and at agricultural fields in Tsukuba (TKB) and Miyakojima (MYK), Japan. The latter fields included …

jp (code pays fourni par la source)

O 2 :CO 2 exchange ratio and isotopic composition of atmospheric O 2 measured using soil chambers, and their application to evaluating enhanced rock weathering and the Dole–Morita effect

Shigeyuki Ishidoya, Takahisa Maeda, Hidehiko Kikuno, Jumpei Fukumasu et autres

Abstract. Soil chamber measurements of δ(O2/N2), CO2 amount fractions, and the δ(18O) of O2 in air (δatm(18O)) were conducted at a forest site in Takayama (TKY), Japan, and at agricultural fields in Tsukuba (TKB) and Miyakojima (MYK), Japan. The latter fields included …

jp (code pays fourni par la source)

Supplementary material to "O 2 :CO 2 exchange ratio and isotopic composition of atmospheric O 2 measured using soil chambers, and their application to evaluating enhanced rock weathering and the Dole–Morita effect"

Shigeyuki Ishidoya, Takahisa Maeda, Hidehiko Kikuno, Jumpei Fukumasu et autres

jp (code pays fourni par la source)

Simultaneous production and consumer efforts reduce the nitrogen load in a Japanese island’s food system

Kosuke Hamada, Sadao Eguchi, Nanae Hirano, Kei Asada

Abstract Issues related to reactive nitrogen (Nr) continue to increase and have exceeded planetary boundaries. Both production- and consumer-level efforts can mitigate Nr loads and inputs. However, only independent evaluations of these efforts have been performed thus far, and the lack of …

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Assessing nitrogen load on a trade-oriented subtropical island in Japan by the concept of food nitrogen footprint

Kosuke Hamada, Sadao Eguchi, Nanae Hirano, Kei Asada

Various human activities generate reactive nitrogen (Nr, all forms of nitrogen except di-nitrogen [N2]); food production is one of the primary emission sources. Chemical fertilizer, which we can generate artificially, is indispensable to meet the world population's demand. However, excessive fertilizer use …

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Corrigendum: Assessing nitrogen flow and nitrogen footprint in the food system of a subtropical island with a scenario to mitigate nitrogen load impacted by trade-dependent agriculture (2023 Environ. Res. Lett. 18 075010)

Kosuke Hamada, Sadao Eguchi, Nanae Hirano, Kei Asada et autres

Corrigendum: Assessing nitrogen flow and nitrogen footprint in the food system of a subtropical island with a scenario to mitigate nitrogen load impacted by trade-dependent agriculture (2023 Environ. Res. Lett. 18 075010), Kosuke Hamada, Sadao Eguchi, Nanae Hirano, Kei Asada, Naoko Oka

jp (code pays fourni par la source)

Assessing nitrogen flow and nitrogen footprint in the food system of a subtropical island with a scenario to mitigate nitrogen load impacted by trade-dependent agriculture

Kosuke Hamada, Sadao Eguchi, Nanae Hirano, Kei Asada et autres

Abstract Recent hikes in fertilizer, feed, and food prices threaten the food security of island-dwelling people who rely heavily on imports to sustain food supply and production. The influx of reactive nitrogen (Nr) through imports increases nitrogen load and degrades the environment. …

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Desirable Diet to Lower the Japanese Nitrogen Footprint: Analysis of the Saitama Prefecture Nutrition Survey 2017

Mariko Takano, Fumi Hayashi, Sadao Eguchi, Yukari Takemi

With the growing interest in healthy and sustainable diets, studying diets with high nutritional quality and low environmental impact is needed. We focused on the nitrogen footprint (NFP)-an indicator of reactive nitrogen loss that causes various environmental impacts-of Japanese diets using individual …

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Interpreting stoichiometric homeostasis and flexibility of soil microbial biomass carbon, nitrogen, and phosphorus

Kei Asada, Takashi Kanda, Naoyuki Yamashita, M. Asano et autres

jp (code pays fourni par la source)

Simulation of rice paddy systems in SWAT: A review of previous applications and proposed SWAT+ rice paddy module

Philip W. Gassman, Jaehak Jeong, Julien Boulangé, Balaji Narasimhan et autres

The Soil and Water Assessment Tool (SWAT) is an ecohydrological watershed-scale model which was initially developed in the early 1990s to simulate the impacts of land use, management systems, and climate on hydrology and/or water quality. First adopted in the U.S., the …

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