Fengming Yuan

• The impacts of recent permafrost thaw on land–atmosphere greenhouse gas exchange

  Open Access•Daniel J Hayes, David W Kicklighter et al.•ARTICLE•Environmental Research Letters•2014

  Añadir item

  Permafrost thaw and the subsequent mobilization of carbon (C) stored in previously frozen soil organic matter (SOM) have the potential to be a strong positive feedback to climate. As the northern permafrost region experiences as much as a doubling of the rate of warming as the rest of the Earth, the vast amount of C in permafrost soils is vulnerable to thaw, decomposition and release as atmospheric greenhouse gases. Diagnostic and predictive esti…

• Permafrost and organic layer interactions over a climate gradient in a discontinuous permafrost zone

  Open Access•Kristofer Johnson, J W Harden et al.•ARTICLE•Environmental Research Letters•2013

  Añadir item

  Permafrost is tightly coupled to the organic soil layer, an interaction that mediates permafrost degradation in response to regional warming. We analyzed changes in permafrost occurrence and organic layer thickness (OLT) using more than 3000 soil pedons across a mean annual temperature (MAT) gradient. Cause and effect relationships between permafrost probability (PF), OLT, and other topographic factors were investigated using structural equation …

• Modeling the effects of fire severity and climate warming on active layer thickness and soil carbon storage of black spruce forests across the landscape in interior Alaska

  Open Access•Hélène Genet, A D McGuire et al.•ARTICLE•Environmental Research Letters•2013

  Añadir item

  There is a substantial amount of carbon stored in the permafrost soils of boreal forest ecosystems, where it is currently protected from decomposition. The surface organic horizons insulate the deeper soil from variations in atmospheric temperature. The removal of these insulating horizons through consumption by fire increases the vulnerability of permafrost to thaw, and the carbon stored in permafrost to decomposition. In this study we ask how w…

• Permafrost and organic layer interactions over a climate gradient in a discontinuous permafrost zone

  Open Access•Kristofer Johnson, J W Harden et al.•ARTICLE•Environmental Research Letters•2013

  Añadir item

  Permafrost is tightly coupled to the organic soil layer, an interaction that mediates permafrost degradation in response to regional warming. We analyzed changes in permafrost occurrence and organic layer thickness (OLT) using more than 3000 soil pedons across a mean annual temperature (MAT) gradient. Cause and effect relationships between permafrost probability (PF), OLT, and other topographic factors were investigated using structural equation …

• Modeling the effects of fire severity and climate warming on active layer thickness and soil carbon storage of black spruce forests across the landscape in interior Alaska

  Open Access•Hélène Genet, A D McGuire et al.•ARTICLE•Environmental Research Letters•2013

  Añadir item

  There is a substantial amount of carbon stored in the permafrost soils of boreal forest ecosystems, where it is currently protected from decomposition. The surface organic horizons insulate the deeper soil from variations in atmospheric temperature. The removal of these insulating horizons through consumption by fire increases the vulnerability of permafrost to thaw, and the carbon stored in permafrost to decomposition. In this study we ask how w…

• The impacts of recent permafrost thaw on land–atmosphere greenhouse gas exchange

  Open Access•Daniel J Hayes, David W Kicklighter et al.•ARTICLE•Environmental Research Letters•2014

  Añadir item

  Permafrost thaw and the subsequent mobilization of carbon (C) stored in previously frozen soil organic matter (SOM) have the potential to be a strong positive feedback to climate. As the northern permafrost region experiences as much as a doubling of the rate of warming as the rest of the Earth, the vast amount of C in permafrost soils is vulnerable to thaw, decomposition and release as atmospheric greenhouse gases. Diagnostic and predictive esti…

Active layer (3 obras) · Atmospheric sciences (3 obras) · Climate change and permafrost (3 obras) · Cryospheric studies and observations (3 obras) · Environmental Science (3 obras) · Geology (3 obras) · Layer (electronics (3 obras) · Permafrost (3 obras) · Soil Science (3 obras) · Soil water (3 obras)