A5059984921- Climate change and permafrost
- Cryospheric studies and observations
- Geological Studies and Exploration
- Arctic and Antarctic ice dynamics
- Geology and Paleoclimatology Research
- Peatlands and Wetlands Ecology
- Rangeland Management and Livestock Ecology
- Atmospheric and Environmental Gas Dynamics
- Landslides and related hazards
- Land Use and Ecosystem Services
- Tree-ring climate responses
- Water Resources and Management
- Remote Sensing in Agriculture
- Environmental Changes in China
- Coastal wetland ecosystem dynamics
Mongolian Academy of Sciences
2021-2024
Hokkaido University
2016
The majority of the Qinghai-Tibet Plateau (QTP) and Mongolia are underlain by permafrost. We have examined trends in air temperature associated freezing/thawing index using a non-parametric statistical method for QTP from 1961 to 2011. annual exhibit similar patterns, suggesting warming trend two regions. 0.33 °C/decade 0.37 Mongolia, respectively. freezing show significantly decreasing with −56.7 °C·days/decade −57.5 °C·days/decade, while thawing present obvious increasing 68.2 68.3 find...
Abstract This study presents the results of permafrost mapping in Mongolia based on TTOP (temperature‐on‐top‐of‐permafrost) approach, which were validated against situ measurements at various locations. In indicated that mean annual ground temperature (MAGT) ranged from 0.6 to 2.2°C interannually, showing greatest variability when furthest 0°C. The differences between modeled and measured MAGTs exceeded ±1°C locations where was a nonequilibrium state controlled predominantly by local...
This study presents thermokarst lake changes at seven different sites in the continuous and isolated permafrost zones Mongolia. Lakes larger than 0.1 ha were analyzed using Corona KH-4, KH-4A KH-4B (1962-1968), Landsat ETM + (1999-2001), ALOS/AVNIR-2 (2006-2007) satellite imagery. Between 1962 2007, total number area of lakes increased by +21% (347 to 420), +7% (3680 3936 ha) zone, respectively. These correspond appearance 85 new (166 during last 45 years. In contrast, zone have decreased...
Fires are natural phenomena that impact human behaviors, vegetation, and landscape functions. However, the long-term history of fire, especially in permafrost marginal zone Central Asia (Mongolia), is poorly understood. This paper presents results radiocarbon short-lived radionuclides (210Pb 137Cs) dating, pollen, geochemical, charcoal, statistical analyses (Kohonen's artificial neural network) sediment core obtained from Northern Mongolia (the Khentii Mountains region). Therefore, we...
The Mongolian Plateau is located in the permafrost transitional zone between high-altitudinal and high-latitudinal regions Northern Hemisphere. Current knowledge of thermal state changes on limited. This study adopted an improved calculation method air freezing thawing index using monthly temperature reanalysis dataset from Climate Research Unit (CRU). spatial temporal variation characteristics 1901 to 2019 were further assessed by Mann–Kendall (M–K) test interpolation methods. results...
Mongolia is an important peatland distribution area in the world. Over past few decades, Mongolian peatlands have undergone significant degradation due to climate change and human activities, yet there remains substantial uncertainty about impacts of changes on regional environment society. Here, compiling data distribution, climate, activity, as well permafrost, we systematically review changes, ecosystem service values face warming intensifying activities. The current show that total...
The Bayanzurkh soum of Khuvsgul province is located in the continuous and discontinuous permafrost zones. We investigated soil organic carbon content Dood Toom, Dund Altarga Beltes rivers valleys Soum. In study area, we collected 720 samples at 181 sites between 2022 2023. determined (SOC, %), density (SOCD, kg m-2), bulk (g/cm3), stone (%), moisture (%). cryic umbrisols, histosols, calcic sceletic regosols, mollic cambisols soils were distributed across area. result showed that SOC ranged...
Permafrost in Mongolia is at the southern edge of Siberian permafrost, which most vulnerable to climate change. In this study, we used ERA5-Land data determine distribution permafrost Mongolia, and MIROC5 for future projection soil temperature. The change temperature obtained during 2020–2100 under Representative Concentration Pathways (RCP) scenarios was RCP 2.6 8.5 respectively. This a first attempt identify using Mongolia. We examined rapid increase near-surface RCP8.5 scenario 2020-2100....
Recent years have seen rapid climatic changes in Central Asia, particularly Mongolia. An increase the thickness of active layer above permafrost and considerable to vegetation structure are likely outcomes long-term temperature rise precipitation changes. The management future habitats or biodiversity northern Mongolia faces significant difficulties from rising temperatures, prolonged frequent droughts, gradual degradation. Our knowledge historical processes involved degradation ensuing...
In this study, we examined changes in the surface area of lakes permafrost region Mongolian Altai Mountain range between 1970 and 2021. We aimed to (1) determine dynamic areas lakes, (2) compare analyze them using long-term climate data. used a topo map (1970), Landsat 5 TM, ETM+ (2000, 2006, 2011, 2015, 2020-2021) satellite imagery, delineated normalized difference water index (NDWI). The historical data imagery were number (>1 ha). classified into five categories (1 - ha, 10 50 100...
Fires are natural phenomena that impact human behaviors, vegetation, and landscape functions. However, the long-term history of fire, especially in permafrost marginal zone Central Asia (Mongolia), is poorly understood. This paper presents results radiocarbon short-lived radionuclides ( 210 Pb 137 Cs) dating, pollen, geochemical, charcoal morphotype, statistical analyses sediment core obtained from Northern Mongolia (the Khentii Mountains region). Therefore, we present first high-resolution...
In Mongolia, greenhouse gas (GHG) and emission factors (EFs) from land-use categories including cropland, wetland, peatland, have not been estimated. The main purpose of this study was to estimate GHG EF based on field measurement data for the cropland using IPPC guideline’s Volume-2 method. determination EFs is crucial as it contributes national inventory. Study sites were selected at in (1) Khurkh river valley, (2) near Ulaanbaatar city. Fieldwork conducted during spring summer seasons...