Factors controlling the release of dissolved organic substances, their stability and impact in methanogenic inundated fens soils

控制溶解有机物质释放的因素、其稳定性以及在产甲烷淹没沼泽土壤中的影响

• 批准号: 239984262
• 负责人: Professor Dr. Klaus-Holger Knorr
• 金额: --
• 依托单位: Leibniz-Institut für Gewässerökologie und Binnenfischerei (IGB)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/239984262?language=en
• 关键词: Factors; controlling; release; dissolved; organic

Today, In the face of climate change, eutrophication of watercourses, and decreasing biodiversity, there are national and international efforts to protect peatlands or to repair their functions in the landscape through restoration measures. In the past, restoring degraded fens by rewetting measures has often led to the formation of new, highly productive shallow lakes. One problem of these new established systems is that in the initial stage of rewetting is accompanied by high release of methane, phosphorus and dissolved organic matter. One important reason might be the lack of phenolics as inhibiting substances, the enhanced availability of labile organic matter as well as favourable exogenic factors in the upper degraded peat layer and in the newly formed sediment layer. The main objective of our project is the identification of factors controlling the release of dissolved organic matter and the concomitant high methane release. This work is expected to make a significant contribution to the understanding of matter turnover and therefore for the succession of rewetted fens in long-term.

今天，面对气候变化，水体富营养化和生物多样性减少，国家和国际上都在努力保护泥炭地或通过恢复措施修复其在景观中的功能。在过去，恢复退化的沼泽地的复湿措施往往导致新的，高生产力的浅水湖泊的形成。这些新建立的系统的一个问题是，在再润湿的初始阶段伴随着甲烷、磷和溶解有机物的高释放。一个重要的原因可能是缺乏酚类化合物作为抑制物质，不稳定的有机质的可用性提高，以及有利的外源因素在上部退化泥炭层和新形成的沉积物层。我们的项目的主要目标是确定控制溶解有机物释放和伴随的高甲烷释放的因素。这项工作预计将作出重大贡献的物质周转的理解，因此，在长期的再湿润沼泽的继承。

项目成果

Changes of the CO2 and CH4 production potential of rewetted fens in the perspective of temporal vegetation shifts

• DOI: 10.5194/bg-12-2455-2015
• 发表时间: 2014-10
• 期刊: Biogeosciences
• 影响因子: 4.9
• 作者: D. Zak;Hendrik Reuter;J. Augustin;T. Shatwell;M. Barth;J. Gelbrecht;R. McInnes

Plant rhizosphere oxidation reduces methane production and emission in rewetted peatlands

• DOI: 10.1016/j.soilbio.2018.07.006
• 发表时间: 2018-10-01
• 期刊: SOIL BIOLOGY & BIOCHEMISTRY
• 影响因子: 9.7
• 作者: Agethen, Svenja;Sander, Michael;Knorr, Klaus-Holger
• 通讯作者: Knorr, Klaus-Holger

Top soil removal reduces water pollution from phosphorus and dissolved organic matter and lowers methane emissions from rewetted peatlands

• DOI: 10.1111/1365-2664.12931
• 发表时间: 2018
• 期刊: Journal of Applied Ecology
• 影响因子: 5.7
• 作者: D. Zak;T. Goldhammer;Alavaro Cabezas;J. Gelbrecht;R. Gurke;C. Wagner;Hendrik Reuter;J. Augustin;A. Klimkowska;R. McInnes