e-infrastructure Roadmap for Open Science in Agriculture

A bibliometric study

The e-ROSA project seeks to build a shared vision of a future sustainable e-infrastructure for research and education in agriculture in order to promote Open Science in this field and as such contribute to addressing related societal challenges. In order to achieve this goal, e-ROSA’s first objective is to bring together the relevant scientific communities and stakeholders and engage them in the process of coelaboration of an ambitious, practical roadmap that provides the basis for the design and implementation of such an e-infrastructure in the years to come.

This website highlights the results of a bibliometric analysis conducted at a global scale in order to identify key scientists and associated research performing organisations (e.g. public research institutes, universities, Research & Development departments of private companies) that work in the field of agricultural data sources and services. If you have any comment or feedback on the bibliometric study, please use the online form.

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Nitrogen budgets of agricultural fields of the Changjiang River basin from 1980 to 1990


To assess the fate of the large amounts of nitrogen (N) brought into the agricultural environment by human activities in the Changjiang River basin, we used [China's county level agricultural database of 1980 and 1990. National Resources and Environmental Data Center, China] and published conversion data to set up a complete N budget for the Changjiang River basin. Sources considered include imported N such as atmospheric deposition, inorganic fertilizer, biological fixation and manure. Dominant losses considered include crop harvests, denitrification of soil nitrate and NH3 volatilization, and the budget was estimated from the difference between all inputs and all outputs. Therefore, the geographic distribution of excess N, considered as lost, by N storage in farmland and N transported to water bodies in Changjiang River basin was analyzed. In the Changjiang River basin, the anthropogenic reactive N has far exceeded the terrestrial bio-fixed N in nature, and human activities have significantly altered the N cycle in this region. The total inputs of N in 1980 and 1990 were 8.0 and 12.9 Tg N, respectively. The total N outputs are 4.41 Tg N in 1980 and 6.85 Tg N in 1990. Thus, the excess N that was stored in farmland was 1.51 Tg N at 1980 and 2.67 Tg N at 1990, respectively, and losses through transportation to water bodies in 1980 was 2.08 and 3.38 Tg N in 1990, respectively. Our research shows that from 1980 to 1990, cultivated land increased 5.9%, grain production increased 30% and N fertilizer-use increased 106%, but the N fertilizer-use efficiency decreased 36%, and the variations in the distribution of N fertilizer-use efficiency, N budgets and N transport to water bodies tended to coincide with each other geographically. (c) 2005 Elsevier B.V. All rights reserved.

  • JP
  • CN
  • CAS_Chinese_Acad_Sci (CN)
  • Keio_Univ (JP)
  • CRAES_Chinese_Res_Acad_Environm_Sci (CN)
  • NIES_Natl_Inst_Environm_Stud (JP)
Data keywords
  • agricultural database
Agriculture keywords
  • agriculture
Data topic
  • information systems
Document type

Inappropriate format for Document type, expected simple value but got array, please use list format

Institutions 10 co-publis
  • CAS_Chinese_Acad_Sci (CN)
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e-ROSA - e-infrastructure Roadmap for Open Science in Agriculture has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 730988.
Disclaimer: The sole responsibility of the material published in this website lies with the authors. The European Union is not responsible for any use that may be made of the information contained therein.