Carbon pool densities and a first estimate of the total carbon pool in the Mongolian forest-steppe
| Autor: | Jamsran Tsogtbaatar, Kherlenchimeg Ganbaatar, Choimaa Dulamsuren, Jan Degener, Tselmeg Chenlemuge, Markus Hauck, Davaadorj Saindovdon, Yolk Yeruult, Banzragch Bat-Enerel, Mookhor Khishigjargal, Christoph Leuschner, Michael Klinge |
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| Rok vydání: | 2016 |
| Předmět: |
Satellite Imagery
0106 biological sciences 010504 meteorology & atmospheric sciences Biome Growing season Larix Forests Permafrost 010603 evolutionary biology 01 natural sciences Grassland Soil Environmental Chemistry 0105 earth and related environmental sciences General Environmental Science Forest floor Global and Planetary Change geography geography.geographical_feature_category Plant Stems Ecology Taiga Global warming Mongolia Soil carbon 15. Life on land Carbon Plant Leaves 13. Climate action Regression Analysis Environmental science Physical geography |
| Zdroj: | Global Change Biology. 22:830-844 |
| ISSN: | 1354-1013 |
| DOI: | 10.1111/gcb.13127 |
| Popis: | The boreal forest biome represents one of the most important terrestrial carbon stores, which gave reason to intensive research on carbon stock densities. However, such an analysis does not yet exist for the southernmost Eurosiberian boreal forests in Inner Asia. Most of these forests are located in the Mongolian forest-steppe, which is largely dominated by Larix sibirica. We quantified the carbon stock density and total carbon pool of Mongolia's boreal forests and adjacent grasslands and draw conclusions on possible future change. Mean aboveground carbon stock density in the interior of L. sibirica forests was 66 Mg C ha(-1) , which is in the upper range of values reported from boreal forests and probably due to the comparably long growing season. The density of soil organic carbon (SOC, 108 Mg C ha(-1) ) and total belowground carbon density (149 Mg C ha(-1) ) are at the lower end of the range known from boreal forests, which might be the result of higher soil temperatures and a thinner permafrost layer than in the central and northern boreal forest belt. Land use effects are especially relevant at forest edges, where mean carbon stock density was 188 Mg C ha(-1) , compared with 215 Mg C ha(-1) in the forest interior. Carbon stock density in grasslands was 144 Mg C ha(-1) . Analysis of satellite imagery of the highly fragmented forest area in the forest-steppe zone showed that Mongolia's total boreal forest area is currently 73 818 km(2) , and 22% of this area refers to forest edges (defined as the first 30 m from the edge). The total forest carbon pool of Mongolia was estimated at ~ 1.5-1.7 Pg C, a value which is likely to decrease in future with increasing deforestation and fire frequency, and global warming. |
| Databáze: | OpenAIRE |
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