Potential of Dust Emission and Causes of Frequent Sandstorm Activities in Ejina Banner, Inner Mongolia, China

doi:10.7522/j.issn.1000-694X.2019.00036

Journal of Desert Research ›› 2019, Vol. 39 ›› Issue (3): 191-198.DOI: 10.7522/j.issn.1000-694X.2019.00036

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Potential of Dust Emission and Causes of Frequent Sandstorm Activities in Ejina Banner, Inner Mongolia, China

Li Kuan^1,2, Jia Xiaopeng³, Xiong Xin¹, Wang Haibing¹, Li Gangtie¹

1. Desert Science and Engineering College/Key Laboratory of Aeolian Sand Physics and Sand Control Engineering in Inner Mongolia, Inner Mongolia Agricultural University, Hohhot 010011, China;
2. Inner Mongolia Land Surveying and Planning Institute, Hohhot 010011, China;
3. Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environmental and Resources, Chinese Academy of Sciences, Lanzhou 730000, China

Received:2019-03-16 Revised:2019-04-01 Published:2019-06-10

Abstract

Abstract: Ejina Banner, located in the downstream of Heihe River in extreme arid areas with serious oasis degradation and frequent sandstorm, is one of the dust emission areas in the west of Inner Mongolia of China. Data on sediment components from four types of typical surface area (sand gravel gobi, sand-rich gobi, degraded oasis, and oasis), intensity of wind erosion and dust emission, average days of dust and wind was comprehensively analyzed to reveal causes of frequent sandstorm activities in this region. The results showed that degraded oasis is the high dust emission areas with high content of clay components and PM₁₀ dust emission intensity (0.2796 kg·d^-1·m^-2). The gobi with the surface of sand-rich and sand gravel is a weak dust emission area which showed strong wind-induced erosions with low content of silt clay and low PM₁₀dust emission intensity (0.1267 kg·d^-1·m^-2 and 0.0672 kg·d^-1·m^-2). Although the oasis surface is rich in clay components, the PM₁₀ dust emission is weak (0.0240 kg·d^-1·m^-2) due to the influence of vegetation and soil moisture. Therefore, the strong sandstorm activity in Ejina Banner is due to its geographic location surrounded by large areas of degraded oasis and gobi as well as possible internal dust circulation process locally.

Key words: wind erosion intensity, dust emission, typical surface, Ejina Banner

CLC Number:

X169

Li Kuan, Jia Xiaopeng, Xiong Xin, Wang Haibing, Li Gangtie. Potential of Dust Emission and Causes of Frequent Sandstorm Activities in Ejina Banner, Inner Mongolia, China[J]. Journal of Desert Research, 2019, 39(3): 191-198.

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Potential of Dust Emission and Causes of Frequent Sandstorm Activities in Ejina Banner, Inner Mongolia, China

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