Water and heat transport in boreal soils: Implications for soil response to climate change
Science of the Total Environment
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Abstract
Soil water content strongly affects permafrost dynamics by changing the soil thermal properties. However, the movement of liquid water, which plays an important role in the heat transport of temperate soils, has been under-represented in boreal studies. Two different heat transport models with and without convective heat transport were compared to measurements of soil temperatures in four boreal sites with different stand ages and drainage classes. Overall, soil temperatures during the growing season tended to be over-estimated by 2-4??C when movement of liquid water and water vapor was not represented in the model. The role of heat transport in water has broad implications for site responses to warming and suggests reduced vulnerability of permafrost to thaw at drier sites. This result is consistent with field observations of faster thaw in response to warming in wet sites compared to drier sites over the past 30. years in Canadian boreal forests. These results highlight that representation of water flow in heat transport models is important to simulate future soil thermal or permafrost dynamics under a changing climate. ?? 2011 Elsevier B.V.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Water and heat transport in boreal soils: Implications for soil response to climate change |
| Series title | Science of the Total Environment |
| DOI | 10.1016/j.scitotenv.2011.02.009 |
| Volume | 409 |
| Issue | 10 |
| Year Published | 2011 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Science of the Total Environment |
| First page | 1836 |
| Last page | 1842 |
| Google Analytic Metrics | Metrics page |