Subsidence and carbon loss in drained tropical peatlands
نویسنده
چکیده
Introduction Conclusions References
منابع مشابه
The potential of responsible peatland management to reduce global soil carbon loss and greenhouse gas emissions
Peatlands represent the largest single global store of soil carbon. Despite providing a natural long-term CO2 sink, drainage and conversion to agricultural and silivicultural management of peatlands has converted them into large net contributors to global greenhouse gas (GHG) emissions (~2.5% of all anthropogenic emissions, primarily from Europe and SE Asia). Drainage-based agriculture on peatl...
متن کاملContrasting vulnerability of drained tropical and high-latitude peatlands to fluvial loss of stored carbon
Carbon sequestration and storage in peatlands rely on consistently highwater tables. Anthropogenic pressures including drainage, burning, land conversion for agriculture, timber, and biofuel production, cause loss of peat-forming vegetation and exposure of previously anaerobic peat to aerobic decomposition. This can shift peatlands from net CO2 sinks to large CO2 sources, releasing carbon held ...
متن کاملSubsidence Rates of Drained Agricultural Peatlands in New Zealand and the Relationship with Time since Drainage.
The drainage and conversion of peatlands to productive agro-ecosystems leads to ongoing surface subsidence because of densification (shrinkage and consolidation) and oxidation of the peat substrate. Knowing the ra0te of this surface subsidence is important for future land-use planning, carbon accounting, and economic analysis of drainage and pumping costs. We measured subsidence rates over the ...
متن کاملMitigating wildfire carbon loss in managed northern peatlands through restoration
Northern peatlands can emit large amounts of carbon and harmful smoke pollution during a wildfire. Of particular concern are drained and mined peatlands, where management practices destabilize an array of ecohydrological feedbacks, moss traits and peat properties that moderate water and carbon losses in natural peatlands. Our results demonstrate that drained and mined peatlands in Canada and no...
متن کاملCurrent and future CO2 emissions from drained peatlands in Southeast Asia
Forested tropical peatlands in Southeast Asia store at least 42 000 Million metric tonnes (Mt) of soil carbon. Human activity and climate change threatens the stability of this large pool, which has been decreasing rapidly over the last few decades owing to deforestation, drainage and fire. In this paper we estimate the carbon dioxide (CO2) emissions resulting from drainage of lowland tropical ...
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تاریخ انتشار 2011