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，印尼泥炭地作为碳（C）汇发挥了重要的全球作用，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，快速的土地利用变化和转换，从这些生态系统的大量碳排放正在加速全球气候变暖，而碳汇能力已大大降低。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增强和优化碳固存。当前泥炭地保护和恢复取得成功，需要足够的生态知识。特别是，泥炭地碳固存可能只能通过一系列措施来优化，同时恢复泥炭地水文和植被覆盖，即泥炭沼泽森林（PSF），以建立合适的泥炭形成和C积累的条件。刺激碳封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速率（汽车）的PSF分类群，但这可能是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探索的研究领域。我们建议解决这一关键的知识差距，这项研究的目的是（一）提供长期的生态观点对印尼泥炭地和碳固存功能，这是很重要的研究泥炭地的发展，驱动泥炭地的因素和它的汽车动态和生态系统对环境变化的响应;（二），以确定组合的PSF类群组成，设计了他们的快速汽车。拟议的研究将进行多代理古生态研究的核心，从泥炭地仍然拥有大的相对完整的PSF。体积密度和Corg含量分析将用于泥炭CAR的测定。与此同时，亚化石花粉和孢子，现代花粉光谱和一种创新的基于DNA的植物遗骸鉴定方法将用于鉴定泥炭地上生长的过去植被。此外，还将进行碳同位素（δ 13 Corg）、Corg含量和宏观木炭分析，以评估泥炭地内环境变化的记录以及生态系统对过去气候变化的响应。本研究的成果将有助于（一）改善泥炭地保护和恢复策略在印度尼西亚;（二）增强印尼泥炭地的碳固存能力;（三）大气中的碳去除和全球气候变化的缓解;（四）提高碳收入的地方政府和利益相关者。