Black Carbon in Surface Soil and Its Sources in Three Central Asian Countries
| Autor: | Mukesh Rai, Shichang Kang, Xiufeng Yin, Sangita Gautam, Huhu Kang, Maheswar Rupakheti, Dipesh Rupakheti, Pengfei Chen |
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| Rok vydání: | 2020 |
| Předmět: |
Tajikistan
Asia 010504 meteorology & atmospheric sciences Health Toxicology and Mutagenesis 010501 environmental sciences Toxicology Monsoon 01 natural sciences Soil Soot Cryosphere Ecosystem Air quality index 0105 earth and related environmental sciences Total organic carbon geography Air Pollutants geography.geographical_feature_category Plateau Glacier General Medicine Pollution Carbon Aerosol Environmental science Physical geography Environmental Monitoring |
| Zdroj: | Archives of environmental contamination and toxicology. 80(3) |
| ISSN: | 1432-0703 |
| Popis: | Black carbon (BC) aerosol impacts the air quality, public health, agricultural productivity, weather, monsoon, cryosphere, and climate system from the local to the global scale. However, its distribution over vast Central Asia is poorly known, because it is one of the poorly sampled regions of the world. BC in the soil can be resuspended into the atmosphere and transported to downwind regions with sensitive ecosystems and vulnerable populations, such as from Central Asian countries to the cryospheric regions in the Tianshan Mountain and the Tibetan Plateau, which could accelerate the melting of the snowfields and glaciers. We report the distribution of BC and total organic carbon (TOC) in surface soil with samples collected at multiple sites, for the first time, over three countries in Central Asia (Uzbekistan, Tajikistan, and Kyrgyzstan). The mean BC (TOC) concentrations over three countries were 0.06 ± 0.06 (11.86 ± 4.84) mg g−1, 0.15 ± 0.21 (20.35 ± 10.96) mg g−1, and 0.32 ± 0.29 (26.45 ± 20.38) mg g−1, respectively. They were found to be originated from the same or similar sources, at least over Tajikistan and Kyrgyzstan, as indicated by their high and significant correlation (R2 > 0.6, p |
| Databáze: | OpenAIRE |
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