Dissolved organic matter driven changes in minerals and organic-mineral interactions during paddy soil development

水稻土发育过程中溶解有机物驱动矿物质变化和有机-矿物质相互作用

• 批准号: 202545460
• 负责人: Professorin Dr. Sabine Fiedler
• 金额: --
• 依托单位: Professur für Bodenkunde und Bodenschutz
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/202545460?language=en
• 关键词: Dissolved; organic; matter; driven; changes

Previous studies indicated that the development and biogeochemistry of paddy soils relates to the parent material, thus the original soil paddies derive from. The proposed research focuses on redox-mediated changes in mineral composition and mineral-associated organic matter (OM) during paddy transformation of different soils. We plan to subject soil samples to a series of redox cycles, in order to mimic paddy soil formation and development. Soils with strongly different properties and mineral composition as well as at different states of paddy transformation; ranging from unchanged soils to fully developed paddy soils, are to be included. We hypothesize that dissolved organic matter is one key driver in redox-mediated transformations, serving as an electron donator as well as interacting with dissolved metals and minerals. The extent of effects shall depend on the parent soil’s original mineral assemblage and organic matter and their mutual interactions. The experimental paddy soil transformation will tracked by analyses of soil solutions, of the (re-)distribution of carbon (by addition of 13C-labelled rice straw), of indicative biomolecules (sugars, amino sugars, fatty acids, lignin) and of minerals (including the redox state of Fe). For analyses of organic matter as well as of mineral characteristics we plan to utilize EXAFS and XPS, for Fe-bearing minerals also Mößbauer spectroscopy. This approach of experimental pedology seems appropriate to give insight into the major factors during paddy soil formation and development.

以往的研究表明，水稻土的发育和土壤地球化学与成土母质有关，因此，原始的土壤是水稻土的起源。本研究主要探讨水稻土转化过程中氧化还原介导的土壤矿物质组成和矿物质相关有机质的变化。我们计划将土壤样品进行一系列的氧化还原循环，以模拟水稻土的形成和发展。包括性质和矿物成分差异很大的土壤，以及处于不同水稻转化状态的土壤;从未改变的土壤到完全发育的水稻土。我们假设溶解的有机物是氧化还原介导的转化中的一个关键驱动因素，作为电子供体以及与溶解的金属和矿物质相互作用。影响的程度应取决于母质的原始矿物组合和有机质及其相互作用。通过分析土壤溶液、碳（再）分布（通过添加13 C标记的稻草）、指示性生物分子（糖、氨基糖、脂肪酸、木质素）和矿物质（包括Fe的氧化还原态）来跟踪实验性水稻土转化。对于有机物和矿物特征的分析，我们计划使用EXAFS和XPS，对于含铁矿物也使用穆斯堡尔谱。这种实验土壤学的方法似乎可以用来研究水稻土形成和发育过程中的主要因素。

项目成果

Response of Vertisols, Andosols, and Alisols to paddy management

• DOI: 10.1016/j.geoderma.2015.06.017
• 发表时间: 2016
• 期刊: Geoderma
• 影响因子: 6.1
• 作者: P. Winkler;K. Kaiser;A. Kölbl;T. Kühn;P. Schad;Livia Urbanski;S. Fiedler;E. Lehndorff;K. Kalbitz;S. Utami;Z. Cao;Gang Zhang;R. Jahn;I. Kögel‐Knabner

Redox control on carbon mineralization and dissolved organic matter along a chronosequence of paddy soils

• DOI: 10.1111/ejss.12042
• 发表时间: 2013-08-01
• 期刊: EUROPEAN JOURNAL OF SOIL SCIENCE
• 影响因子: 4.2
• 作者: Hanke, A.;Cerli, C.;Kalbitz, K.
• 通讯作者: Kalbitz, K.

Properties, processes and ecological functions of floodplain, peatland, and paddy soils

• DOI: 10.1016/j.geoderma.2014.04.010
• 发表时间: 2014-09
• 期刊: Geoderma
• 影响因子: 6.1
• 作者: J. Luster;K. Kalbitz;B. Lennartz;J. Rinklebe

Accelerated soil formation due to paddy management on marshlands (Zhejiang Province, China)

• DOI: 10.1016/j.geoderma.2013.09.005
• 发表时间: 2014-09-01
• 期刊: GEODERMA
• 影响因子: 6.1
• 作者: Koelbl, A.;Schad, P.;Koegel-Knabner, I.
• 通讯作者: Koegel-Knabner, I.

Does anoxic processing of dissolved organic matter affect organic–mineral interactions in paddy soils?

• DOI: 10.1016/j.geoderma.2013.12.006
• 发表时间: 2014-09
• 期刊: Geoderma
• 影响因子: 6.1
• 作者: A. Hanke;M. Sauerwein;K. Kaiser;K. Kalbitz