Peatlands are both responding to and influencing climate change. While numerous studies on peatland carbon dynamics have been published in boreal and temperate regions for decades, a much smaller yet growing body of scientific articles related to tropical peatlands has recently been published, including from previously overlooked regions such as the Amazonian and Congo basins. The recent recognition of tropical peatlands as valuable ecosystems because of the organic carbon they accumulate in their water-saturated soils has occurred after most of them have been drained and degraded in Southeast Asia. Under disturbed conditions, their natural carbon storage function is shifted to an additional carbon source to the atmosphere. Understanding the effect of land-use change and management practices on peatlands can shed light on the driving variables that influence carbon emissions and can model the magnitude of emissions in future degraded peatlands. This is of primary importance as other peatland-covered regions in the tropics are at risk of land-use and land-cover changes. A systematic review that synthesizes the general understanding of tropical peatland carbon dynamics based on the published literature is much needed to guide future research directions on this topic. Moreover, previous studies of biogeochemical cycling in tropical peatlands have largely focused on terrestrial stocks and fluxes with little attention given to document lateral and downstream aquatic export through natural and artificial drainage channels. Here, we present a systematic review protocol to describe terrestrial and aquatic carbon dynamics in tropical peatlands and identify the influence of land-use change on carbon exchange. We described a set of literature search and screening steps that lay the groundwork for a future synthesis on tropical peatlands carbon cycling. Such an evidence-based synthesis using a systematic review approach will help provide the research community and policymakers with consistent science-based guidelines to set and monitor emissions reduction targets as part of the forestry and land-use sector.

中文翻译：

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不同土地利用类型下热带泥炭地的陆地和水生碳动态：系统审查协议

泥炭地既响应又影响气候变化。虽然几十年来在北方和温带地区发表了大量关于泥炭地碳动力学的研究，但最近发表的与热带泥炭地相关的科学文章要小得多，但仍在不断增加，其中包括以前被忽视的地区，如亚马逊和刚果盆地。热带泥炭地最近被认为是有价值的生态系统，因为它们在水饱和的土壤中积累了有机碳，这是在东南亚的大部分泥炭地排干和退化之后发生的。在受干扰的条件下，它们的天然碳储存功能转移到大气中的额外碳源。了解土地利用变化和管理实践对泥炭地的影响可以揭示影响碳排放的驱动变量，并可以模拟未来退化泥炭地的排放量。这是最重要的，因为热带其他泥炭地覆盖的地区面临土地利用和土地覆盖变化的风险。非常需要根据已发表的文献综合对热带泥炭地碳动力学的一般理解进行系统评价，以指导该主题的未来研究方向。此外，之前对热带泥炭地生物地球化学循环的研究主要集中在陆地种群和通量，很少关注记录通过自然和人工排水渠道的横向和下游水产品出口。这里，我们提出了一个系统评价协议来描述热带泥炭地的陆地和水生碳动态，并确定土地利用变化对碳交换的影响。我们描述了一组文献搜索和筛选步骤，为未来热带泥炭地碳循环的综合奠定了基础。这种使用系统审查方法的循证综合将有助于为研究界和政策制定者提供一致的科学指导方针，以制定和监测作为林业和土地利用部门一部分的减排目标。我们描述了一组文献搜索和筛选步骤，为未来热带泥炭地碳循环的综合奠定了基础。这种使用系统审查方法的循证综合将有助于为研究界和政策制定者提供一致的科学指导方针，以制定和监测作为林业和土地利用部门一部分的减排目标。我们描述了一组文献搜索和筛选步骤，为未来热带泥炭地碳循环的综合奠定了基础。这种使用系统审查方法的循证综合将有助于为研究界和政策制定者提供一致的科学指导方针，以制定和监测作为林业和土地利用部门一部分的减排目标。