Putting the carbon back into peat: Palaeoecological contribution to the enhancement of natural carbon sequestration of Indonesian peatlands

将碳放回到泥炭中：古生态对增强印度尼西亚泥炭地自然碳固存的贡献

• 批准号: 404867302
• 负责人: Professor Dr. Hermann Behling
• 金额: --
• 依托单位: Abteilung Palynologie und Klimadynamik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/404867302?language=en
• 关键词: Putting; carbon; back; into; peat

In the past, Indonesian peatlands played a significant global role as a carbon (C) sink for they store around 10% of the total global peat carbon pool. However, due to recent, rapid land use change and conversion, the large C emissions from these ecosystems are accelerating global climate warming whilst the C sink capacity has been greatly degraded. In order to combat climate change, not only is the reduction of C emissions necessary, but also the enhancement and optimization of C sequestration through peatland conservation and restoration. For current peatland conservation and restoration to achieve success, adequate ecological knowledge is required. In particular, peatland C sequestration can likely only be optimized by a combination of measures to simultaneously restore both peatland hydrology and vegetation cover, i.e. peat swamp forest (PSF), to establish suitable conditions for peat formation and C accumulation. One approach to stimulating C sequestration would be to plant the PSF taxa that are responsible for rapid C accumulation rates (CARs) in Indonesian peatlands, but which might be CAR-related species is difficult to assess through direct observation thus this remains an unexplored research area. We propose to address this critical knowledge gap with this research that aims (i) to provide long-term ecological perspectives on Indonesian peatlands and their C sequestration functions, which is important to study peatland development, the factors driving peatland and its CARs dynamics and ecosystem responses to environmental change; and (ii) to identify the assemblages of PSF taxa composition that have engineered their rapid CARs. The proposed research will be conducted by performing multi-proxy palaeoecological studies on cores taken from the peatlands that still harbor large relatively intact PSF. Bulk density and Corg content analyses will be applied for the determination of peat CAR. Meanwhile, subfossil pollen and spore, modern pollen spectra and an innovative DNA-based method for plant remains identification will be used to identify the past vegetation growing on the peatlands. Additionally, carbon isotope (δ13Corg), Corg content and macro-charcoal analyses will be conducted to assess the record of environmental change within peatland and the responses of the ecosystem to past climatic variabilities. The outcomes of this research will contribute to (i) the improvement of peatland conservation and restoration strategies in Indonesia; (ii) the enhancement of C sequestration capacities of Indonesian peatlands; (iii) atmospheric C removal and global climate change mitigation; (iv) raising of C revenues for local government and stakeholders.

过去，印度尼西亚泥炭地作为碳 (C) 汇发挥着重要的全球作用，因为它们储存了全球泥炭碳库总量的 10% 左右。然而，由于最近土地利用的快速变化和转换，大量碳排放。这些生态系统正在加速全球气候变暖，而碳汇能力已大大下降，为了应对气候变化，不仅需要减少碳排放，还需要通过泥炭地保护和恢复来加强和优化碳固存。当前的泥炭地保护和恢复要取得成功，需要足够的生态知识，特别是，泥炭地碳封存可能只能通过同时恢复泥炭地水文和植被覆盖（即泥炭沼泽森林（PSF））的措施来优化。刺激碳固存的一种方法是在印度尼西亚泥炭地种植负责快速碳积累率（CAR）的PSF类群，但这可能是泥炭形成和碳积累的合适条件。与 CAR 相关的物种很难通过直接观察进行评估，因此这仍然是一个未经探索的研究领域，我们建议通过这项研究来解决这一关键的知识差距，该研究的目的是（i）提供有关印度尼西亚泥炭地及其碳封存的长期生态视角，这对于研究泥炭地的发展、驱动泥炭地及其 CAR 动态的因素以及生态系统对环境变化的响应非常重要；(ii) 确定设计其快速 CAR 的 PSF 类群组成的组合。拟议的研究将通过对取自泥炭地的岩心进行多代理古生态学研究来进行，这些泥炭地仍然含有大量相对完整的 PSF，并且将应用堆积密度和 Corg 含量分析来测定泥炭 CAR 同时，亚化石花粉和孢子，现代。花粉光谱和基于 DNA 的创新植物遗骸识别方法将用于识别泥炭地上过去生长的植被。此外，碳同位素 (δ13Corg)、Corg 含量和将进行宏观木炭分析，以评估泥炭地内的环境变化记录以及生态系统对过去气候变量的反应，这项研究的成果将有助于 (i) 印度尼西亚泥炭地保护和恢复战略的改进； ) 增强印度尼西亚泥炭地的碳封存能力； (iii) 大气中的碳清除和减缓全球气候变化； (iv) 为地方政府和利益相关者增加碳收入。