Effects of Climate Warming and Vegetation Cover on Permafrost of Mongolia

摘要: Long-term monitoring of permafrost in Mongolia showed that under the influence climate warming is ubiquitously degrading at different rates. The average trends increases active layer thickness and mean annual ground temperature are 5–20 cm 0.1–0.3°C per decade, respectively. These last 15–20 years higher than those previous years. Furthermore, degradation Hovsgol mountainous region more intense Hentei Hangai regions. Experimental results have shown vegetation cover, especially moss forest, dense grass, natural insulators maintain lower soil moisture by lowering evaporation rate. Hence, grazing may accelerate permafrost. Since plays an important role maintenance ecosystems this region, recent lead to significant changes ecosystems, thermal state content.