N. Koga

1.1k total citations
44 papers, 815 citations indexed

About

N. Koga is a scholar working on Soil Science, Ecology and Environmental Chemistry. According to data from OpenAlex, N. Koga has authored 44 papers receiving a total of 815 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Soil Science, 9 papers in Ecology and 9 papers in Environmental Chemistry. Recurrent topics in N. Koga's work include Soil Carbon and Nitrogen Dynamics (18 papers), Soil and Water Nutrient Dynamics (9 papers) and Plant nutrient uptake and metabolism (6 papers). N. Koga is often cited by papers focused on Soil Carbon and Nitrogen Dynamics (18 papers), Soil and Water Nutrient Dynamics (9 papers) and Plant nutrient uptake and metabolism (6 papers). N. Koga collaborates with scholars based in Japan, Germany and United Kingdom. N. Koga's co-authors include Hiroyuki Tsuji, Haruo Tsuruta, Takuji Sawamoto, Ryosuke Tajima, Kentaro Hayashi, Yosuke Yanai, Yukiyoshi Iwata, Hiroshi Nakano, M. Nemoto and Seiji Shimoda and has published in prestigious journals such as Journal of the American Chemical Society, SHILAP Revista de lepidopterología and Soil Biology and Biochemistry.

In The Last Decade

N. Koga

44 papers receiving 782 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
N. Koga Japan 16 371 209 174 145 100 44 815
Dan C. Olk United States 16 605 1.6× 246 1.2× 163 0.9× 323 2.2× 74 0.7× 34 1.0k
John P. Hoben United States 10 464 1.3× 181 0.9× 308 1.8× 193 1.3× 165 1.6× 14 1.0k
B. Schmidt-Brücken Germany 5 701 1.9× 461 2.2× 184 1.1× 150 1.0× 70 0.7× 6 924
Wensheng Liu China 16 336 0.9× 112 0.5× 62 0.4× 254 1.8× 100 1.0× 37 741
Xiangyi Li China 17 287 0.8× 166 0.8× 58 0.3× 365 2.5× 47 0.5× 62 829
Xianjun Jiang China 12 204 0.5× 321 1.5× 117 0.7× 89 0.6× 19 0.2× 26 645
Jialuo Yu China 20 402 1.1× 309 1.5× 95 0.5× 245 1.7× 38 0.4× 41 1.6k
Kyungjin Min United States 12 348 0.9× 275 1.3× 99 0.6× 116 0.8× 38 0.4× 23 636
Samantha Salomão Caramori Brazil 11 278 0.7× 178 0.9× 75 0.4× 117 0.8× 14 0.1× 38 737
Meng China 16 110 0.3× 77 0.4× 63 0.4× 210 1.4× 28 0.3× 147 1.1k

Countries citing papers authored by N. Koga

Since Specialization
Citations

This map shows the geographic impact of N. Koga's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by N. Koga with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites N. Koga more than expected).

Fields of papers citing papers by N. Koga

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by N. Koga. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by N. Koga. The network helps show where N. Koga may publish in the future.

Co-authorship network of co-authors of N. Koga

This figure shows the co-authorship network connecting the top 25 collaborators of N. Koga. A scholar is included among the top collaborators of N. Koga based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with N. Koga. N. Koga is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Nishina, Kazuya, Kentaro Hayashi, Azusa Oita, et al.. (2024). Feasibility assessment of Japan’s fertilizer reduction target: A meta-analysis and its implications for nitrogen waste. Journal of Environmental Management. 373. 123362–123362. 2 indexed citations
2.
Koga, N., et al.. (2024). A statistical model predicts N mineralization of various organic amendments for paddy fields. Soil Science & Plant Nutrition. 70(3). 225–232. 1 indexed citations
3.
Yanai, Yosuke, Tomoyoshi Hirota, Yukiyoshi Iwata, et al.. (2014). Snow cover manipulation in agricultural fields: as an option for mitigating greenhouse gas emissions. Ecological Research. 29(4). 535–545. 11 indexed citations
4.
Koga, N., Pete Smith, Jagadeesh Yeluripati, et al.. (2011). Estimating net primary production and annual plant carbon inputs, and modelling future changes in soil carbon stocks in arable farmlands of northern Japan. Agriculture Ecosystems & Environment. 144(1). 51–60. 27 indexed citations
5.
Koga, N. & Ryosuke Tajima. (2010). Assessing energy efficiencies and greenhouse gas emissions under bioethanol-oriented paddy rice production in northern Japan. Journal of Environmental Management. 92(3). 967–973. 60 indexed citations
6.
Hayashi, Kentaro, N. Koga, & Yosuke Yanai. (2009). Effects of observational time resolution on estimated fluxes of ammoniacal nitrogen:Effects of observational time resolution on estimated fluxes of ammoniacal nitrogen. Journal of Japan Society of Air Pollution. 44(5). 248–254. 2 indexed citations
7.
Koga, N., et al.. (2009). Potential agronomic options for energy‐efficient sugar beet‐based bioethanol production in northern Japan. GCB Bioenergy. 1(3). 220–229. 7 indexed citations
8.
Hayashi, Kentaro, N. Koga, & Yosuke Yanai. (2009). Effects of field-applied composted cattle manure and chemical fertilizer on ammonia and particulate ammonium exchanges at an upland field. Atmospheric Environment. 43(35). 5702–5707. 19 indexed citations
9.
Aso, Mariko, et al.. (2008). Dynamics of 2-N-tert-Butylaminoxyladenosine Incorporated into Oligodeoxynucleotides. Nucleic Acids Symposium Series. 52(1). 151–152. 1 indexed citations
10.
Matsumoto, Shingo, et al.. (2008). Evaluation of the mineralizable organic nitrogen in soil using an immunological technique. Biology and Fertility of Soils. 45(1). 107–111. 4 indexed citations
11.
Aso, Mariko, et al.. (2007). Studies on DNA dynamics using 2-N-tert-butylaminoxylpurines. Nucleic Acids Symposium Series. 51(1). 163–164. 1 indexed citations
12.
Koga, N., Takuji Sawamoto, & Haruo Tsuruta. (2006). Life cycle inventory-based analysis of greenhouse gas emissions from arable land farming systems in Hokkaido, northern Japan. Soil Science & Plant Nutrition. 52(4). 564–574. 52 indexed citations
13.
Watanabe, K., et al.. (2006). Bacterial Community Shift in Field Soil Caused by Annual Application of Liquid Livestock Feces. Japan Agricultural Research Quarterly JARQ. 40(1). 31–36. 4 indexed citations
14.
Koga, N., Haruo Tsuruta, Takuji Sawamoto, Seiichi Nishimura, & Kazuyuki Yagi. (2004). N2O emission and CH4 uptake in arable fields managed under conventional and reduced tillage cropping systems in northern Japan. Global Biogeochemical Cycles. 18(4). 65 indexed citations
15.
Koga, N., Haruo Tsuruta, Hiroyuki Tsuji, & Hiroshi Nakano. (2003). Fuel consumption-derived CO2 emissions under conventional and reduced tillage cropping systems in northern Japan. Agriculture Ecosystems & Environment. 99(1-3). 213–219. 73 indexed citations
16.
Kaneko, Tetsuya, et al.. (2003). Synthetic studies and properties of N-tert-butylaminoxyl nucleosides. Nucleic Acids Symposium Series. 3(1). 9–10. 1 indexed citations
17.
Iwasaki, Yohei, et al.. (2003). On theg-value shift and intersystem crossing in photo-excited radical-triplet systems. Applied Magnetic Resonance. 23(3-4). 377–391. 7 indexed citations
18.
Aso, Mariko, Tatsuo Ikeno, Tetsuya Kaneko, N. Koga, & Hiroshi Suemune. (2001). Synthesis and properties of a new class of nueleosides with spin source. Nucleic Acids Symposium Series. 1(1). 115–116. 1 indexed citations
19.
Koga, N., et al.. (2000). Methionine sulfoximine suppressed the stimulation of dark carbon fixation by ammonium nutrition in wheat roots. Soil Science & Plant Nutrition. 46(2). 393–400. 8 indexed citations
20.
Koga, N., et al.. (1997). Responses to nitrogen sources and regulatory properties of root phosphoenolpyruvate carboxylase. Soil Science & Plant Nutrition. 43(3). 643–650. 11 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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