Lipid biogeochemistry of paddy soil evolution
Zusammenfassung der Projektergebnisse
The molecular composition of lipids in soils of different agricultural usage indicates an influence of management itself and climatic conditions as primary factors. The corresponding substrates on which the soils developed play only a minor role. Microbial lipids depend on paddy management that may affect the humidity, soil pH, temperature, redox conditions and organic matter of soils. As confirmed in the chronosequence study of Cixi (first phase) and the laboratory experiment of P1-4 (second phase) it was shown that the microbial consortia changed rapidly with increased methanogenic marker depends on alternating redox cycles and straw supply. In the Cixi area, lipid compositional changes from topsoil to subsoil reflected different botanical origins as well as advanced pedogenesis in tidal wetland sediment after land reclamation and associated development into lacustrine/limnic sediment, marsh soil and finally arable soil. The most intense changes in lipid composition were observed in topsoil (< 20 cm) after only 50 yr of agricultural use. Subsoil did not exhibit notable differences in lipid composition between sites. Agricultural usage converted plant wax lipid composition of paddy topsoil within 50 yr to reflect the n-alkane patterns of crops with their relative proportion increasing with cultivation time. The n-alkane composition of rice plant tissues changed during growth and was adapted to the water level on flooded fields. Therefore, in submerged plant tissue (young rice, roots) mid-chain (C23 to C25) n-alkanes dominated vs. adult plants whose organs (leaf and stem) grew subaerially, indicating the chemotaxonomic potential of nalkanes in rice. Climatic conditions affect biogeochemical cycling of lipids more than the substrate, with accelerate cycling at tropical locations being noticeable in plant lipid preservation and microbial composition.
Projektbezogene Publikationen (Auswahl)
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2011. Changes in diversity and functional gene abundances of microbial communities involved in nitrogen fixation, nitrification, and denitrification in a tidal wetland versus paddy soils cultivated for different time periods. Applied and Environmental Microbiology 77, 6109–6116
Bannert, A., Kleineidam, K., Wissing, L., Mueller-Niggemann, C., Vogelsang, V., Welzl, G., Cao, Z., Schloter, M.
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2011. Comparison of lipid biomarker and gene abundance characterizing the archaeal ammoniaoxidizing community in flooded soils. Biology and Fertility of Soils 47, 839–843
Bannert, A., Mueller-Niggemann, C., Kleineidam, K., Wissing, L., Cao, Z.H., Schwark, L., Schloter, M.
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2012. Intra-versus intersite macroscale variation in biogeochemical properties along a paddy soil chronosequence. Biogeosciences 9, 1237–1251
Mueller-Niggemann, C., Bannert, A., Schloter, M., Lehndorff, E., Schwark, L.
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2013. Change of PAHs with evolution of paddy soils from prehistoric to present over the last six millennia in the Yangtze River Delta region, China. Science of the Total Environment 449, 328–335
Zhang, J., Mueller-Niggemann, C., Wang, M., Cao, Z.H., Luo, X., Wong, M., Chen, W.
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2013. The carbon count of 2000 years of rice cultivation. Global Change Biology 19, 1107–1113
Kalbitz, K., Kaiser, K., Fiedler, S., Kölbl, A., Amelung, W., Bräuer, T., Cao, Z., Don, A., Grootes, P., Jahn, R., Schwark, L., Vogelsang, V., Wissing, L., Kögel-Knabner, I.
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2014. Accelerated soil formation due to paddy management on marshlands (Zhejiang Province, China). Geoderma 228-229, 67–89
Kölbl, A., Schad, P., Jahn, R., Amelung, W., Bannert, A., Cao, Z.H., Fiedler, S., Kalbitz, K., Lehndorff, E., Müller-Niggemann, C., Schloter, M., Schwark, L., Vogelsang, V., Wissing, L., Kögel-Knabner, I.
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2014. Macroecology of methane-oxidizing bacteria: The β-diversity of pmoA genotypes in tropical and subtropical rice paddies. Environmental Microbiology 16, 72–83
Lüke, C., Frenzel, P., Ho, A., Fiantis, D., Schad, P., Schneider, B., Schwark, L., Utami, S.R.
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2015. Chemotaxonomy and diagenesis of aliphatic hydrocarbons in rice plants and soils from land reclamation areas in the Zhejiang Province, China. Organic Geochemistry 83-84, 215-226
Mueller-Niggemann, C., Schwark, L.
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2015. Spatial distribution of soil organic matter in two fields on tidal flat sediments (Zhejiang Province, China) differing in duration of paddy management. Journal of Plant Nutrition and Soil Science 178, 649-657
Kölbl, A., Mueller-Niggemann, C., Schwark, L., Cao, Z.H., Kögel-Knabner, I.
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2016. Distribution of tetraether lipids in agricultural soils – differentiation between paddy and upland management, Biogeosciences 13, 1647–1666
Mueller-Niggemann, C., Utami, S. R., Marxen, A., Mangelsdorf, K., Bauersachs, T., Schwark, L.
