Труды сотрудников ИЛ им. В.Н. Сукачева СО РАН

/ X. Z. Huang, G. Guggenberger, Y. Kuzyakov [et al.] // Sci Rep. - 2019. - Vol. 9. - Ст. 18684, DOI 10.1038/s41598-019-55174-y. - Cited References:47. - The authors gratefully acknowledge financial support from the National Natural Science Foundation of China (No. 41090283; No. 41430860; No. 41807051) as well as and National Science Foundation of China and Russian Foundation of Basic Research joint project (N 19-54-53026) granted to T.G. and O.S. The publication was supported by the Russian Government Program of Competitive Growth of Kazan Federal University and with the support of the "RUDN University program 5-100". Contribution of YK was supported by the Russian Science Foundation (project No. 19-77-30012). . - ISSN 2045-2322РУБ Multidisciplinary Sciences

Аннотация: The soil-water interfaces (SWI) in soil pores are hotspots for organic matter (OM) transformation. However, due to the heterogeneous and opaque nature of soil microenvironment, direct and continuous tracing of interfacial reactions, such as OM transformations and formation of organo-mineral associations, are rare. To investigate these processes, a new soil microarray technology (SoilChips) was developed and used. Homogeneous 800-mu m-diameter SoilChips were constructed by depositing a dispersed Oxisol A horizon suspension on a patterned glass. Dissolved organic matter from the original soil was added on the SoilChips to mimic SWI processes. The effects of ammonium fertilization (90 mg N kg(-1) soil) on chemical composition of SWIs were evaluated via X-ray photoelectron spectroscopy. Over 21 days, ammonium addition increased OM coatings at SWIs and modified the OM chemical structure with more alcoholic- and carboxylic-C compared to the unfertilized control. Molecular modeling of OM composition at SWIs showed that N fertilization mainly facilitated the microbial production of glucans. We demonstrated that N availability modifies the specific OM molecular processing and its immobilization on SWIs, thereby providing a direct insight into biogeochemical transformation of OM at micro-scale.

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Держатели документа:
Huazhong Univ Sci & Technol, Hubei Bioinformat & Mol Imaging Key Lab, Britton Chance Ctr Biomed Photon,Wuhan Natl Lab O, Dept Biomed Engn,Coll Life Sci & Technol,Syst Bio, Wuhan, Hubei, Peoples R China.
Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Hunan, Peoples R China.
Chinese Acad Sci, Inst Subtrop Agr, Changsha Res Stn Agr & Environm Monitoring, Hunan 410125, Peoples R China.
Leibniz Univ Hannover, Inst Soil Sci, D-30419 Hannover, Germany.
RAS, VN Sukachev Inst Forest, SB, Krasnoyarsk 660036, Russia.
Univ Goettingen, Dept Agr Soil Sci, Dept Soil Sci Temperate Ecosyst, Gottingen, Germany.
Kazan Fed Univ, Inst Environm Sci, Kazan 420049, Russia.
RUDN Univ, Agrotechnol Inst, Moscow, Russia.

Доп.точки доступа:
Huang, Xizhi; Guggenberger, Georg; Kuzyakov, Yakov; Shibistova, Olga; Ge, Tida; Li, Yiwei; Liu, Bifeng; Wu, Jinshui; National Natural Science Foundation of ChinaNational Natural Science Foundation of China [41090283, 41430860, 41807051]; National Science Foundation of ChinaNational Natural Science Foundation of China [N 19-54-53026]; Russian Foundation of Basic ResearchRussian Foundation for Basic Research (RFBR) [N 19-54-53026]; Russian Government Program of Competitive Growth of Kazan Federal University; Russian Science FoundationRussian Science Foundation (RSF) [19-77-30012]; RUDN University program 5-100