리서치 하이라이트

Peatland carbon loss

Nature Geoscience

2008년10월13일

Water loss will exacerbate peatland degradation, resulting in more soil carbon being released as carbon dioxide as surface temperatures rise, suggests a study online this week in Nature Geoscience.

Peatlands store large amounts of carbon owing to the low rates of carbon breakdown in cold, waterlogged soils. Takeshi Ise and colleagues use a soil physical?biogeochemical-coupled model to examine the effect of water table height on peatland decomposition. Lowering the water table increases peat loss, which further enhances water loss, setting in motion a positive feedback that significantly increases decomposition of soil organic carbon under climate change. In a long-term simulation, an experimental warming of 4 degrees Celsius causes soil organic carbon loss of 40% from shallow peat and 86% from deep peat, when these feedbacks are included.

◆国内著者連絡先:

伊勢武史(いせたけし)

独立行政法人 海洋研究開発機構

TEL : 045-778-5595

E-mail : ise@jamstec.go.jp

doi: 10.1038/ngeo331 | Original article

리서치 하이라이트