Prof. Dr. Rolf Nieder

Nitrogen balance of arable soils

Investigations on the nitrogen balance in arable soils include the processes of N-mineralisation and mineral-N-displacement prevailing during the winter half-year and the N-dynamics during the vegetation period (here mainly ammonium fixation and defixation; dynamics of microbial biomass). A part of these investigations is carried out using labelled nitrogen (15 N).

Long-term C- and N-dynamics of different ecosystems

For quite some time, studies have been carried out on long-term C- and N-dynamics in agricultural systems (e.g. C- and N-accumulation in soil organic matter after crumb deepening, N-release after grassland ploughing, C- and N-dynamics after compost application and in different tillage systems, stabilisation of soil organic matter). The activities in forest ecosystems focus on the long-term source and sink functions of forest soils, the effects of increased N-inputs on humus morphology and quality, and mineral N-development under anthropogenic influence.

Nutrient balances in German agriculture

Long-term balances (1950 to the present day) for nitrogen, phosphorus and potassium in agriculture are drawn up both at regional (countries) and national level. The nutrient surpluses calculated from these balances are evaluated from an ecological and economic point of view.

International cooperation

There is intensive cooperation on questions of the carbon and nutrient balance of soils with research groups in Great Britain, Italy, Spain, Russia, Rwanda and India, among others. Benbi (Indian cooperation partner) has resulted in the textbooks "Handbook of Processes and Modeling in the Soil-Plant System" (Haworth Press, New York) [http://www.soil.tu-bs.de/etc/handbook.pdf] and "Carbon and Nitrogen in the Terrestrial Environment" (http://www.springer.com/978-1-4020-8432-4). In addition, the working group has been conducting studies on the N balance in China for many years.

• PPP-CHINA NH3-Emissionen
• Humusvergrabung (DFG)
• Zukunftsfonds TU Braunschweig
• METROAGRI CHINA
• PPP-CHINA Nanjing
• Coltan Environmental Management
• PPP-CHINA Baoding (DAAD)
• Stickstoffmanagement China (BMBF)
• Recycling China (BMBF)
• Kohlenstoff-Sequestrierung und N-Mineralisation (Benbi, DFG)
• Coltan (VW):
• Stickstoffdynamik unter Halbzwerghybriden (Pioneer)
• Critical loads (UBA)
• Ammoniak-Volatilisation (2001)
• Ammoniak-Volatilisation (97-2000)
• Nitratsaustrag von Böden ins Grundwasser
• Mikrobielle N-Dynamik (94-96)
• N-Dynamik
• Mikrobielle N-Dynamik (91-93):
• Erfassung und Darstellung der Nitrataustragsgefährdung:

Publications

• Liao, W., C. Liu, Y. Yuan, Z. Gao, R. Nieder, M.Roelcke (2019): Trade-offs of gaseous emissions from soils under vegetable, wheat-maize and apple orchard cropping systems applied with digestate: An incubation study, Journal of the Air & Waste Management Association. DOI: 10.1080/10962247.2019.1694091
• Roelcke, M., L. Heimann, Y. Hou, J. Guo, Q. Xue, W. Jia, A. Ostermann, R. Mendoza Huaitalla, M. Engbers, C. Olbrich, R.W. Scholz, J. Clemens, F. Schuchardt, R. Nieder, X. Liu, F. Zhang (2019): Phosphorus status, use and recycling in a Chinese peri-urban region with intensive animal husbandry and cropping systems. , Front Agr Sci Eng 6(4):388-402. DOI: 10.15302/J-FASE-2019286
• Al-Dalain S.A., G.J. Al-Rabadi, R. Nieder, M. Alnawaisch, A. Küsters, P.J. Torley, A.H. Abdel-Ghani, and F. Al-Nasir (2018): Plant-soil-nutrient status of vegetables and wheat grown on calcareous soils, Crop Research 53 (3-4), 109-116, doi: 10.31830/2454-1761.2018.0001.1
• Bensemann, M., D.K. Benbi, M. Spieckermann, and R. Nieder (2018): Land use effects on soil carbon and nitrogen stocks and dynamics in North Germany, Farming and Management 3(2), 110-122.
• Hou, Y., S. Wei, W.Q. Ma, M. Roelcke, R. Nieder, S.L. Shi, J.C. Wu, and F.S. Zhang (2018): Changes in nitrogen and phosphorus flows and losses in agricultural systems of three megacities of China, Resources, Conservation and Recycling 139, 64-75. doi.org/10.1016/j.resconrec.2018.07.030.
• Knoblauch, C., F.-X. Naramabuye, and R. Nieder (2018): Phosphorus availability in selected soils of Rwanda: Comparison of four test procedures, Farming and Management 3(2), 123-135.
• Nieder, R., D.K. Benbi, and F.-X. Reichl (2018): Soil Components and Human Health. Springer, ISBN 978-94-024-1222-2, DOI 10.1007/978-94-024-1222-2, 886pp.
• Poeplau, C., A. Don, J. Six, M. Kaiser, D. Benbi, C. Chenu, M. F. Cotrufo, ... R. Nieder (2018): Isolating organic carbon fractions with varying turnover rates in temperate agricultural soils – A comprehensive method comparison, Soil Biol. Bioch. 125, 20-26, doi.org/10.1016/j.soilbio.2018.06.025.
• Alcántara, V., A. Don, L. Vesterdal, R. Well, and R. Nieder (2017): Stability of buried carbon in deep-ploughed forest and cropland soils - implications for carbon stocks, Scientific Reports 7.1: 5511, DOI:10.1038/s41598-017-05501-y.
• Diogo, R.V.C, M. Bizimana, and R. Nieder (2017): Effects of compost type and storage conditions of climbing bean on Technosols of Tantalum mining sites in Western Rwanda, Journal of Plant Nutrition and Soil Science 180, 482-490
• Alcántara, V., A. Don, R., Well, and N. Nieder (2016): Deep ploughing increases agricultural soil organic matter stocks, Global Change Biology, doi: 10.1111/gcb.13289.
• Roelcke, M., L. Heimann, Y. Hou, W.Q. Ma, Y.M. Luo, G.X. Li, X.J. Liu, F. Schuchardt, R. Nieder, and F.S. Zhang (2016): Organic residue management options in a Chinese peri-urban region with intensive animal husbandry and high nutrient loads, RAMIRAN 2015 - Rural-Urban Symbiosis. Proceedings of the 16th International RAMIRAN Conference, 8th-10th September 2015, Hamburg University of Technology, Germany; Körner, I. (Ed.): TUTech Verlag, Hamburg, Germany, DOI: urn:nbn:de:gbv:830-88213742, p. 35-39
• Heimann, L., M. Roelcke, Y. Hou, A. Ostermann, W.Q. Ma, and R. Nieder (2015): Nutrients and pollutants in agricultural soils in the peri-urban region of Beijing: Status and recommendations, Agriculture, Ecosystems & Environment 209 (Special Issue), 74-88, doi: 10.1016/j.agee.2015.03.026
• Hofmeier, M., M. Roelcke, Y. Han, T. Lan, H. Bergmann, D. Böhm, Z.C. Cai, and R. Nieder (2015): Nitrogen management in a rice-wheat system in the Taihu Region: Recommendations based on field experiments and surveys, Agriculture, Ecosystems & Environment 209 (Special Issue), 60-73, doi: 10.1016/j.agee.2015.03.032
• Lan, T., Y. Han, M. Roelcke, R. Nieder, and Z. Cai (2014): Sources of nitrous and nitric oxides in paddy soils: Nitrification and denitrification, Journal of Environmental Sciences 26, 581–592.
• Lan, T., Y. Han, M. Roelcke, R. Nieder, and Z.C. Cai (2014): Temperature dependence of gross N transformation rates in two Chinese paddy soils under aerobic condition, Biology and Fertility of Soils 50, 949-959.
• Nieder, R., T.K.D. Weber, I. Paulmann, A. Muwanga, M. Owor, F.-X. Naramabuye, F. Gakwerere, M. Biryabarema, H. Biester, and W. Pohl (2014): The geochemical signature of rare-metal pegmatites in the Central Africa Region: Soils, plants, water and stream sediments in the Gatumba tin-tantalum mining district, Rwanda, Journal of Geochemical Exploration 144, Part C, 539–551.
• Ostermann, A., J. Gao, G. Welp, J. Siemens, M. Roelcke, L. Heimann, R. Nieder, Q.Y. Xue, X.Y. Lin, A. Sandhage-Hofmann, and W. Amelung (2014): Identification of soil contamination hotspots with veterinary antibiotics using heavy metal concentrations and leaching data - a field study in China, Environmental Monitoring and Assessment 186, 7693–7707.
• Lan, T., Y. Han, M. Roelcke, R. Nieder, and Z. Cai (2013): Processes leading to N2O and NO emissions from two different Chinese soils under different soil moisture contents, Plant and Soil 371, 611-627.
• Lan, T., Y. Han, M. Roelcke, R. Nieder and Z. Cai (2013): Effects of nitrification inhibitor dicyandiamide (DCD) on gross N transformation rates and dual functions mitigating N2O emission in paddy soils, Soil Biology and Biochemistry 67, 174-182.
• Ndoli, A., F. Naramabuye, R.V. Diogo, A. Buerkert, and R. Nieder (2013): Greenhouse experiments on soybean (Glycine max) growth on Technosol substrates from tantalum mining in Rwanda, International Journal of Agricultural Science Research 2(5), 144-152.
• Roelcke, M., L. Heimann, A. Ostermann, Y. Hou, K. Müller-Hansen, H.Y. Lu, M. Knaus, J. Clemens, R. Nieder, H. Goldbach, W.Q. Ma, R.J. Dong, X.J. Liu and F.S. Zhang (2013): Organic residue management options in an Chinese peri-urban region with high nutrient and pollutant loads, In: Dong, R.J. and Raninger, B. (eds.): Biogas Engineering and Application, Volume 3, p. 295-309. China Agricultural University Press, Beijing, ISBN: 978-7-5655-0751-9, 361 pp.
• Hou, Y., Z.L. Gao, W.Q. Ma, L. Heimann, M. Roelcke, and R. Nieder (2012): Nitrogen flows in intensive “crop-livestock" production systems typically for the peri-urban area of Beijing, Acta Ecologica Sinica 32(4), 1027-1036 (in Chinese with English abstract) .
• Hou, Y., Z.L. Gao, L. Heimann, M. Roelcke, W.Q. Ma, and R. Nieder (2012): Nitrogen balances of smallholder farms in major cropping systems in a peri-urban area of Beijing, China, Nutrient Cycling in Agroecosystems 92: 347–361, doi: 10.1007/s10705-012-9494-0.
• Nieder, R., D.K. Benbi and H.W. Scherer (2011): Fixation and defixation of ammonium in soils: a review. , Biol Fertil Soils 47, 1-14.
• Paulmann, I., T.K.D. Weber, R. Nieder, F. Naramabuye, A. Ndoli and F. Gakwerere (2011): Spurenelementbelastung von Böden im Bergbaugebiet Gatumba, Ruanda. In: Böden verstehen - Böden nutzen - Böden fit machen, 3. - 9. September 2011, Berlin., In: Berichte der DBG »Böden verstehen - Böden nutzen - Böden fit machen«, 3. - 9. September 2011, Berlin.
• Weber, T.K.D., I. Paulmann, A. Muwanga, M. Owor, J. Nyabare, and R. Nieder (2011): Vorkommen von Spurenelementen in Flusssedimenten und Grund- und Oberflächenwasser in der Bergbauregion von Gatumba, Ruanda. , In: Böden verstehen - Böden nutzen - Böden fit machen, 3. - 9. September 2011, Berlin.
• Clemens, J., H. Goldbach, M. Roelcke, and R. Nieder (2010): Recycling organischer Reststoffe aus der Landwirtschaft und aus dem städtischen Bereich in China, Forum Geoökol. 21 (1), 2010, 55-57
• Nieder, R., W. Köster, and H.-P. Dauck (2010): Beitrag der Landwirtschaft zu diffusen Phosphateinträgen in die Hydrosphäre, WasserWirtschaft 5, 20-25
• Roelcke, M., R. Nieder, Y. Hu, and U. Schmidhalter (2010): Innovatives Stickstoff-Management und innovative Technologien zur Verbesserung der landwirtschaftlichen Produktion und zum Schutz der Umwelt in der chinesischen Intensivlandwirtschaft, Forum Geoökol. 21 (1), 2010, 52-55.
• Nieder, R., and D.K. Benbi (2008): Carbon and Nitrogen in the Terrestrial Environment., 432 pp. 74 illus., 1 in color., Hardcover ISBN: 978-1-4020-8432-4, Springer Verlag.
• Nieder, R., T. Harden, R. Martens, and D.K. Benbi (2008): Microbial biomass in arable soils of Germany during the growth period of annual crops, Journal of Plant Nutrition and Soil Science, 171 (6), 878 - 885, doi:10.1002/jpln.200700024
• Pacholski, A., G.X. Cai, X.H. Fan, H. Ding, D.L. Chen, R. Nieder and M. Roelcke (2008): Comparison of different methods for the measurement of ammonia volatilization after urea application in Henan Province, China, Journal of Plant Nutrition and Soil Science, 171 (3), 361-369
• Reetsch, A., Naramabuye, F., Pohl, W., Zachmann, D., Trümper, K., Flügge, J., and Nieder, R. (2008): Properties and quality of soils in the open-cast mining district of Gatumba, Rwanda., Etudes Rwandaises 16, 51-79.
• Nendel, C., K.C. Kersebaum, R. Nieder, and R. Kubiak (2007): Nitrogen mineralization from mature bio-waste compost in vineyard soils. III. Simulation of soil mineral nitrogen dynamics, J. Plant Nutr. Soil. Sci., 170 (5), 598-607
• Nieder, R., W. Köster, and K.C. Kersebaum (2007): Brennpunkt Stickstoff I: Beitrag der Landwirtschaft zu diffusen N-Einträgen, WasserWirtschaft 1-2/2007, 53-57
• Pacholski, A., G.X. Cai, R. Nieder, J. Richter, X.H. Fan, Z.L. Zhu, and M. Roelcke (2006): Calibration of a simple method for determining ammonia volatilization in the field - comparative measurements in Henan Province, China, Nutrient Cycling in Agroecosystems 74: 259-273.
• Nendel, C., S. Reuter, R. Kubiak, and R. Nieder (2005): Nitrogen mineralisation from mature bio-waste compost in vineyard soils. II. Verification of N mineralisation parameters in a long-term in-situ incubation experiment., J. Plant Nutr. Soil Sci. 168, 219-227
• Nieder, R. (2005): Carbon and nitrogen turnover in North German forest soils, In: Z.L. Zhu, K. Minami and G.X. Xing (eds.): Proceedings of the 3rd International Nitrogen Conference , Oct 12-16, 2004, Nanjing, China. pp 152-158. Science Press, Beijing, Science Press, New York
• Cao, B., M. Roelcke, H.-P. Dauck, A. Küsters, G.X. Cai, and R. Nieder (2004): Nitrogen mineralization in soils under organic farming and conservation tillage as compared to conventional management., Proceedings of the EUROSOIL 2004 Conference, Freiburg/Germany. Sept. 4-12, 2004. (Available on CD-ROM and the Web)
• Benbi, D.K., and R. Nieder (2003): Handbook of Processes and Modeling in Soil-Plant System, Haworth Press, Inc., New York, 762 Seiten
• Nieder, R., D.K Benbi, and K. Isermann (2003): Soil Organic Matter Dynamics, In: D.K. Benbi & R. Nieder (Eds.) – Handbook of Processes and Modeling in Soil-Plant System. - Haworth Press, Inc., New York.
• Nieder, R., W. Köster, H.B Dauk, and S. Brinkmann (2003): Nährstoffüberschüsse in Deutschland von 1950 bis 2000: Quellen, Senken und Wirkungen auf die Umwelt. I. N-Überhang der Landwirtschaft, Z.f. Landnutzung und Landentwicklung 44, 172-178
• Bailly, F., and R. Nieder (2002): FAO/Unesco, Bodenkarte der Welt, Kapitel 3.2.7., In H.P. Blume, P. Felix-Henningsen, W.R. Fischer, H.G. Frede, R. Horn & K. Stahr (Hrsg.), - Handbuch der Bodenkunde, Ecomed, Landsberg.
• Bailly, F., and R. Nieder (2001): Bezugsgrundlage der Boden-Ressourcen der Erde (WRB), In: H.P. Blume, P. Felix-Henningsen, W.R. Fischer, H.G. Frede, R. Horn & K. Stahr (Hrsg.), - Handbuch der Bodenkunde, Kapitel 3.2.6, Ecomed, Landsberg, 53 S.
• Nieder, R., H.P. Dauck, and D.K. Benbi (2001): Mineralization of newly accumulated nitrogen, In: W.J. Horst et al. (Eds): Plant nutrition – Food security and sustainability of agro-ecosystems. Kluver Academic Publishers, Netherlands, 940-941
• Nieder, R., and J. Richter (2000): C and N accumulation in arable soils of West Germany and its influence on the environment - Developments 1970 to 1998, J. Plant Nutrition and Soil Science, 163 (1), 65-72
• Nieder, R., E. Neugebauer, A. Willenbockel, K.C. Kersebaum, and J. Richter (1996): Nitrogen transformation in arable soils of NW Germany during the cereal growing season, Biol. Fertil. Soils, 22, 179-183
• Köster, W. und R. Nieder (1995): Wann ist eine Grunddüngung mit Phosphor, Kalium und Magnesium wirtschaftlich vertretbar?, Erscheint im Dezember 2008 online auf dieser Webseite
• Nieder, R., K.C. Kersebaum, and J. Richter (1995): Significance of nitrate leaching and long term N immobilization after deepening the plough layers in the N regime of arable soils of NW Germany, Plant and Soil, 173, 167-175
• Nieder, R., G.Schollmayer, and J. Richter (1991): Denitrification in the rooting zone of cropped soils with regard to methodology and climate: a review, Biol. Fertil. Soils, 8, 219-226

Presentations

• Nieder (2019): Soil and health, Jahrestagung der Bodenkundlichen Gesellschaft der Schweiz und der Deutschen Bodenkundlichen Gesellschaft, Bern, 24. – 29. August 2019
• Roelcke (2019): Quantification of ammonia, nitrous oxide and methane emissions from manures applied to arable soils in the North China Plain – and possible mitigation approaches., Jahrestagung der Bodenkundlichen Gesellschaft der Schweiz und der Deutschen Bodenkundlichen Gesellschaft, Bern, 24. – 29. August 2019.
• Roelcke (2018): Biogas plant effluent utilization and nutrient management plan in agriculture in the North China Plain, March 15, 2018, Institute of Agricultural Resources and Regional Planning (IARRP), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China.
• Roelcke (2018): Environmental assessment of manure treatment and mitigation measures – Examples from Germany and China, International Workshop on Agriculture Green Development, April 23-27, 2018, Beijing, China
• Roelcke (2018): Gaseous emissions from manures applied to arable soils in the North China Plain – overview of recent experiments, and mitigation measures, Institute seminar of Institute of Climate-Smart Agriculture, Thünen Institute. December 18, 2018, Braunschweig, Germany
• Roelcke (2017): Effluent utilization and nutrient management plan, 2nd Best-practice in Manure Management, Dingzhou, Hebei Province, China, October 12-13, 2017
• Roelcke (2017): Presentation of Nmin method for nitrogen fertilization in rice-wheat systems in SE China, 3rd Field Day of Sino-German Crop Production and Agrotechnology Park (DCALDP), September 28, 2017, Huanghai Farm, Jiangsu Province, China
• Roelcke (2017): Effluent utilization and nutrient management plan in agriculture in the North China Plain, Kick-off and first Workshop ChinaRes, Beijing, China, November 14, 2017
• Roelcke (2017): Soil nutrient and pollutant status, and organic residue management options in a Chinese peri-urban region with high livestock densities, April 20, 2017, Institute of Agricultural Resources and Regional Planning (IARRP), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China.
• Nieder (2016): Nitrogen dynamics in deep ploughed soils of North Germany. , 7th International Nitrogen Initiative Conference (INI 2016), Melbourne, Australia, 4-8 December 2016
• Roelcke (2016): Organic residue management options in a Chinese peri-urban region with high livestock densities , 2nd working group meeting on Agricultural Policy Dialogue (APD) - Sustainable Agriculture, German-Chinese Agricultural Center (DCZ), Beijing, China, 29 August 2016
• Roelcke (2016): Organic residue management options in a Chinese peri-urban region with high livestock densities , Sino-German Conference on Modern Ecological Agriculture, Liaoyuan, Jilin Province, China, 1 - 2 Sept., 2016
• Roelcke (2016): Soil P status and organic residue management options in a Chinese peri-urban region with high livestock densities , 5th Sustainable Phosphorus Summit 2016, Kunming, China, 16 - 20 August, 2016
• Roelcke (2016): Organic residue management options in a Chinese peri-urban region with high livestock densities and high nutrient loads , Sino-German Symposium: Explaining Transition of Chinese Rural Areas: A System Perspective, Chengdu, China, 12 – 16 Sept. 2016
• Roelcke (2016): Effluent utilization and nutrient management plan, Best-Practice Seminar on manure management, Tianjin, China, Oct. 19, 2016
• Roelcke (2016): Biogas residue and slurry treatment and fertilizer application , 1st Sino-EU 2016 Bio-Natural Gas Summit, Beijing, China, Nov. 03 - 04, 2016
• Alcantara (2015): Sequestrierung organischer Bodensubstanz in Unterböden tiefgepflügter Äcker, Jahrestagung der Deutschen Bodenkundl. Gesellschaft, München, 05.-10.9.2015
• Roelcke (2015): Organic residue management options in a Chinese peri-urban region with intensive animal husbandry and high nutrient loads, RAMIRAN 2015 - Rural-Urban Symbiosis. 16th International RAMIRAN Conference, 8th-10th September 2015, Hamburg University of Technology, Hamburg, Germany.
• Nieder (2014): Presentation of major results from the Coltan project phase 2013/14, Coltan Final Workshop in Goslar, December 15th, 2014
• Nieder (2014): Beitrag der Landwirtschaft zu N- und P-Emissionen: Beispiele aus Deutschland und China, Vortrag im Institutsseminar des Thünen-Instituts für Agrarklimaschutz am 09.12.2014.
• Nieder (2014): Dynamics of trace elements and crop nutrients in arable land of a mining region in Rwanda, Guest Colloquium of Plant Nutrition Hohenheim University June 24th, 2014.
• Roelcke (2014): Nutrients and pollutants in agricultural soils in the peri-urban region of Beijing: status and recommendations, 1st Sino-German MEECAL symposium “Management of Ecosystems and Environmental Changes in Arid Lands in Central Asia”, Sept 22 to 26, 2014, in Urumqi, Xinjiang, China.
• Nieder (2013): Nitrogen mineralization and nitrification in soils of the Gatumba tin-tantalum mining district, Rwanda, 6th International Nitrogen Conference, 17-20 November 2013, Kampala, Uganda. Just enough N – Perspectives on how to get there for “too much” and “too little” Regions
• Nieder (2013): Nitrogen and phosphorus dynamics in soils of the Gatumba Mining District: Results from laboratory experiments , Coltan Workshop in Kigali, February 4th, 2013
• Nieder (2013): Highlights of toxic element analyses in the Gatumba Mining District, Coltan Workshop in Kigali, Rwanda, February 4th, 2013
• Roelcke (2013): Recycling of organic residues from agricultural and municipal origin in China, Final Symposium International Research Training Group GRK 1070. Sino-German Center, Beijing, China, 25–26 April 2013: Modeling Material Flows and Production Systems for Sustainable Resource Use in Intensified Crop Production in the North China Plain
• Roelcke (2013): Strategien zur Verbesserung der Nährstoffsituation in den stadtnahen Randgebieten Beijings mit Intensiv-Tierhaltung, Jahrestagung der DBG: »Böden - Lebensgrundlage und Verantwortung«, 7.-12. September 2013, Rostock
• Nieder (2012): Recycling of organic residues from agricultural and municipal origin in China. Overview of the Bonn-Braunschweig research group. , Final Workshop in the Sino-German Center for Science Promotion, Beijing, China March 9th to11th, 2012.
• Nieder (2012): Environmental Research in a Tantalum Mining Area in Central Africa. , Presentation at Nanjing Normal University, China, November 14th, 2012.
• Roelcke (2012): Soil nutrient and pollutant status and organic residue management options in the peri-urban region of Beijing, Nov. 28, 2012, College of Resources and Environmental Science, Agricultural University of Hebei, Baoding, China.
• Roelcke (2012): Soil nutrient and pollutant status and organic residue management options in the peri-urban region of Beijing, Nov. 18, 2012, Seminar at College of Resources and Environmental Sciences, China Agricultural University, summarizing main results and recommendations of the project "Recycling of organic residues from agricultural and municipal origin in China"
• Roelcke (2012): Nitrogen fertilization in rice-wheat systems in SE China - Results from recent field experiments, farmers’ surveys, and formulation of recommendations, Workshop on Nitrogen cycling in terrestrial ecosystems: Methods and outlook, Nanjing, China, September 7-14, 2012. Sponsored by Chinesisch-Deutsches Zentrum für Wissenschaftsförderung (DFG-NSFC) Beijing
• Roelcke (2012): Nitrogen fertilization in rice-wheat systems in SE China - Results from recent field experiments, farmers’ surveys, and formulation of recommendations, Nov. 16, 2012, Presentation summarizing main results from the "Nitrogen Management" project for the responsible officials and technological experts, Huaian Agricultural Technology Extension Center, Huaian, Jiangsu Province, China
• Nieder (2011): Innovative Nitrogen Management Technologies to improve Agricultural Production and Environmental Protection in Intensive Chinese Agriculture. Overview of the TU Braunschweig-coordinated research group., Final Workshop Recycling Project in Beijing, November 2011.
• Roelcke (2010): Improving nitrogen management in intensive rice-wheat rotations in southeastern China., 5th International Nitrogen Conference, 3-7 December 2010, New Delhi, India. Reactive N Management for Sustainable Development – Science, Technology & Policy.
• Roelcke (2007): Nitrogen mineralization in soils under organic farming and conservation tillage as compared to conventional management., Symposium: Sustainable Land-Use in China: The Contribution of Collaborative Sino-German Research. 13-14 Sept. 2007, Sino-German Center for the Promotion of Science, Beijing (DFG-NSFC).
• Nieder (2006): Stickstoff-Überschuss in der Landwirtschaft Deutschlands: Wo bleibt die Trendwende? , 118. VDLUFA-Kongress, 19. bis 22. September 2006, Freiburg

• Gara, M., A. Swieter, M. Langhof, J.M. Greef, and R. Nieder (2019): Verteilung und Nährstoffgehalte der Pappel-Feinwurzeln in einem Agroforst-Ackerschlag in Norddeutschland. , 7. Forum Agroforstsysteme, Freising, 10. und 11. Oktober 2019.
• Deharde, A., Y. Yuan, Z. Gao, W. Ma, M. Roelcke, and R. Nieder (2018): Quantification of ammonia, nitrous oxide and methane emissions following biogas digestate application in an orchard field in the North China Plain , 20th Nitrogen Workshop “Coupling C - N - P - S cycles”, Rennes, France, June 25-27, 2018
• Widdig, M., M. Roelcke, Z. Gao, W. Ma, A. Michalczyk, K.-C. Kersebaum, and R. Nieder (2017): Quantification and modeling of ammonia volatilization from irrigated and non-irrigated winter wheat plots in the North China Plain, The 15th International Symposium on Soil and Plant Analysis (15th ISSPA Nanjing 2017), Nanjing, China, May 14-18, 2017
• Nieder, R., M. Bensemann,. D.K. Benbi (2016): Land use effects on C and N dynamics in an area near Braunschweig, North Germany, 19th Nitrogen Workshop, Skara, Sweden, 27-29 June 2016.
• Nieder, R., Z. Jumshudov, V. Alcántara, A. Don, and R. Well (2016): Nitrogen dynamics in deep ploughed soils of North Germany , 7th International Nitrogen Initiative Conference (INI 2016), Melbourne, Australia, 4-8 December 2016
• Bensemann, M., D. K. Benbi, and R. Nieder (2015): Influence of land use on carbon and nitrogen dynamics in soils, Jahrestagung der Deutschen Bodenkundl. Gesellschaft, München, 05.-10.9.2015
• Jumshudov, Z., R. Nieder, V. Alcantara, A. Don, and R. Well (2015): Sequestrierung organischer Bodensubstanz in Unterböden tiefgepflügter Äcker , Jahrestagung der Deutschen Bodenkundl. Gesellschaft, München, 05.-10.9.2015
• Hofmeier, M., M. Roelcke, Y. Han, Z.C. Cai, C. Schuster, M. Fuchs, and R. Nieder (2014): Testing of a stabilized nitrogen fertilizer in a rice-wheat doublre-crop rotation in southeastern China, 18th Nitrogen Workshop - The nitrogen challenge: building a blueprint for nitrogen use efficiency and food security. 30th June - 3rd July 2014, Lisboa, Portugal
• Weber, T.K.D., R. Nieder, I. Paulman, A. Muwanga, M. Owor, F.-X. Naramabuye, H. Biester, F. Gakwerere, M. Biryabarema, and W. Pohl (2014): Occurrence of Trace Elements in Soils, Plants, Water and Stream Sediments of the Tin-Tantalum Mining Area of Gatumba, Rwanda, ASA, CSSA, & SSSA International Annual Meeting, Nov 2-5, Long Beach, CA.
• Hofmeier, M., M. Roelcke, Y. Han, Z.C. Cai, and R. Nieder (2012): Nitrogen mineralization potentials in rice-wheat systems in southeastern China, 17th International Nitrogen Workshop, Wexford, Ireland, 26-29 June 2012
• Hofmeier, M., Y. Han, T. Lan, Z. Cai, M. Roelcke and R. Nieder (2011): Improving Nitrogen Use Efficiencies in Rice-wheat Rotations in Southeastern China, Tropentag, October 5-7, 2011, Bonn
• Schmidhalter, U., Y.C. Hu, R. Nieder and M. Roelcke (2010): Innovative nitrogen management technologies to improve agricultural production and environmental protection in China, 7th BMBF Forum for Sustainability “Research for Sustainable development – International”
• Heck P., R. Nieder, H. Goldbach, F.S. Zhang, K. Mueller-Hansen, M. Roelcke, J. Clemens, X.J. Liu, H.Y. Lu, T.N. Cui (2009): Recycling of Organic Residues from Agricultural and Municipal Origin in China., ORBIT 2009 CHINA International Conference: Biomass and Organic Waste as Sustainable Resources. Beijing, November 19-21, 2009.