Scholarlink

<p>Tropical peatlands are globally important, millennia-old carbon sinks, yet unprecedented human-driven degradation is triggering alarming carbon emissions. Comprehensive quantification of carbon dynamics across the disturbance sequence—from peat swamp forests to drained and fire-impacted peatlands—remains a critical knowledge gap. Here we show that over 18 years (1996–2014), drainage and subsequent peat fires released approximately 30–41 kg C m<sup>−2</sup> from peatlands in Central Kalimantan, Indonesia, using radiocarbon dating of peat profiles and groundwater dissolved organic carbon. Drainage contributed 5–11 kg C m<sup>−2</sup>, primarily from centuries- to millennium-old, previously waterlogged peat. Fires released 23–32 kg C m<sup>−2</sup> from peat accumulated over the past 3,000 years, initiating progressive oxidative decomposition of older peat. Extrapolation to Indonesia’s disturbed peatlands suggests a release of 0.81–3.70 Gt&#xa0;C between 1996 and 2014, with ongoing decomposition releasing an additional 0.03–0.08 Gt C annually, accelerating the impact on the global carbon balance.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Progressive release of long-stored carbon from tropical peatland disturbances

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年5月27日

查看全文
  • Jun Koarashi,
  • Masayuki Itoh,
  • Mariko Atarashi-Andoh,
  • Yoko Saito-Kokubu,
  • Makoto Matsueda,
  • Kitso Kusin,
  • Adi Jaya,
  • Salampak Dohong,
  • Takashi Hirano

摘要

Tropical peatlands are globally important, millennia-old carbon sinks, yet unprecedented human-driven degradation is triggering alarming carbon emissions. Comprehensive quantification of carbon dynamics across the disturbance sequence—from peat swamp forests to drained and fire-impacted peatlands—remains a critical knowledge gap. Here we show that over 18 years (1996–2014), drainage and subsequent peat fires released approximately 30–41 kg C m−2 from peatlands in Central Kalimantan, Indonesia, using radiocarbon dating of peat profiles and groundwater dissolved organic carbon. Drainage contributed 5–11 kg C m−2, primarily from centuries- to millennium-old, previously waterlogged peat. Fires released 23–32 kg C m−2 from peat accumulated over the past 3,000 years, initiating progressive oxidative decomposition of older peat. Extrapolation to Indonesia’s disturbed peatlands suggests a release of 0.81–3.70 Gt C between 1996 and 2014, with ongoing decomposition releasing an additional 0.03–0.08 Gt C annually, accelerating the impact on the global carbon balance.