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 PM10 dust 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.
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
.
DOI: 10.7522/j.issn.1000-694X.2019.00036
[1] Shao Y,Wyrwoll K,Chappell A,et al.Dust cycle:an emerging core theme in earth system science[J].Aeolian Research,2011,2(4):181-204.
[2] Mahowald N M,Engelstaedter S,Luo C,et al.Atmospheric iron deposition:global distribution,variability,and human perturbations[J].Annual Review of Marine Science,2009,1(1):245-278.
[3] Mctainsh G,Strong C.The role of aeolian dust in ecosystems[J].Geomorphology,2007,89(1/2):39-54.
[4] 钱正安,宋敏红,李万元.近50年来中国北方沙尘暴的分布及变化趋势分析[J].中国沙漠,2002,22(2):10-15.
[5] 王存忠,牛生杰,王兰宁.中国50 a来沙尘暴变化特征[J].中国沙漠,2010,30(4):933-939.
[6] Zhang B L,Tsunekawa A,Tsubo M.Contributions of sandy lands and stony deserts to long-distance dust emission in China and Mongolia during 2000-2006[J].Global & Planetary Change,2008,60(3):487-504.
[7] 范一大,史培军,王秀山,等.中国北方典型沙尘暴的遥感分析[J].地球科学进展,2002,17(2):289-294.
[8] Wang H B,Jia X P.Field observations of windblown sand and dust in the Takimakan Desert,NW China,and insights into modern dust sources[J].Land Degradation & Development,2013,24(4):323-333.
[9] Zhang Z C,Dong Z B,Zhang C X,et al.The geochemical characteristics of dust material and dust sources identification in northwestern China[J].Journal of Geochemical Exploration,2017,175:148-155.
[10] 延昊,王长耀,牛铮,等.东亚沙尘源地、沙尘输送路径的遥感研究[J].地理科学进展,2002(1):90-94.
[11] 张凯,高会旺,张仁健,等.我国沙尘的来源、移动路径及对东部海域的影响[J].地球科学进展,2005,20(6):627-636.
[12] Zhang Z C,Dong Z B,Li J Y,et al.Implications of surface properties for dust emission from gravel deserts (gobis) in the Hexi Corridor[J].Geoderma,2016,268:69-77.
[13] Guan Q Y,Yang J,Zhao S L,et al.Climatological analysis of dust storms in the area surrounding the Tengger Desert during 1960-2007[J].Climate Dynamics,2015,45(3/4):903-913.
[14] 夏训诚,杨根生.中国西北地区沙尘暴灾害及防治[M].北京:中国环境科学出版社,1999.
[15] 周茅先,刘立超,肖洪浪,等.额济纳地区沙尘气溶胶质量浓度特征初步分析[J].干旱区地理,2005(4):68-73.
[16] Wang H B,Jia X P,Li K,et al.Horizontal wind erosion flux and potential dust emission in arid and semiarid regions of China:a major source area for East Asia dust storms[J].Catena,2015,133:373-384.
[17] Pye K,Tsoar H.The mechanics and geological implications of dust transport and deposition in deserts with particular reference to loess formation and dune sand diagenesis in the northern Negev,Israel[J].Geological Society London Special Publications,1987,35(1):139-156.
[18] Mahowald N,Bryant R G,del Corral J C,et al.Ephemeral lakes and desert dust sources[J].Geophysical Research Letters,2003,30(2):1074-1078.
[19] Washington R,Todd M,Middleton N J,et al.Dust-storm source areas determined by the total ozone monitoring spectrometer and surface observations[J].Annals of the Association of American Geographers,2015,93(2):297-313.
[20] Tegen I,Harrison S P,Kohfeld,et al.Impact of vegetation and preferential source areas on global dust aerosol:results from a model study[J].Journal of Geophysical Research,2002,107(D21):4576.
[21] 张克存,安志山,蔡迪文,等.沙漠-绿洲过渡带近地表风沙过程研究进展[J].地球科学进展,2015,30(9):1018-1027.
[22] 王训明,郎丽丽,花婷,等.戈壁砾石覆盖度与风蚀强度关系实验研究[J].中国沙漠,2013,33(2):313-319.
[23] 屈建军,黄宁,拓万全,等.戈壁风沙流结构特性及其意义[J].地球科学进展,2005,20(1):19-23.
[24] 余沛东,陈银萍,李玉强,等.植被盖度对沙丘风沙流结构及风蚀量的影响[J].中国沙漠,2019,39(5):29-36.
[25] 胡广录,王德金,廖亚鑫,等.黑河中游荒漠-绿洲过渡带斑块植被区风沙蚀积强度特征[J].中国沙漠,2016,36(6):1547-1554.
