干旱区研究

Arid Zone Research >

2021 , Vol. 38 >Issue 1: 144 - 153

DOI: https://doi.org/10.13866/j.azr.2021.01.16

Weather and Climate

Precipitation characteristics in alluvial fan in the north and south of Kumtag Desert based on measured data

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  • 1. Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China
    2. Key Laboratory of Desert Ecosystem and Global Change, State Administration of Forestry and Grassland, Beijing 100091, China
    3. Kumtag Desert Ecosystem Research Station, State Administration of Forestry and Grassland, Dunhuang 736200, Gansu, China
    4. Shaoguan University, Shaoguan 512005, Guangdong, China
    5. Experimental Center of Desert Forestry, Chinese Academy of Forestry, Dengkou 015200, Inner Mongolia, China

Received date: 2020-04-24

  Revised date: 2020-08-12

  Online published: 2021-03-05

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Abstract

This study analyzed the precipitation characteristics in detail using the field precipitation data from June 2017 to May 2018 in alluvial fan in the north and south of Kumtag Desert. The results are as follows: (1) Due to the effect of geographical location, topography, etc. , the spatial distributions of precipitation in Kumtag Desert vary greatly. The minimum annual precipitation in Sanlongsha, Beishan alluvial fan in the north of Kumtag Desert, is 21. 6 mm. The precipitation in Altun alluvial fan in the south of Kumtag Desert gradually increases from west to east, and the annual precipitation in upper reach of Huyang, Wushikate, Saimagou, and Duobagou ditches is 73.0、75.2、176.0 mm, and 137.4 mm, respectively. The precipitation in Altun alluvial fan in the south of Kumtag Desert gradually increases from the north to south and the annual precipitation in lower and middle reaches of Huyang ditch is 58.0 and 56.4 mm, respectively, which is lower than that in upper reach of Huyang ditch. (2) The precipitation in alluvial fan in the north and south of Kumtag Desert mainly occurs from May to August and the cumulative precipitation can account for more than 90% of full year. (3) The number of precipitation events in alluvial fan in the north and south of Kumtag Desert lies between 11 and 26, and a small number of large precipitation events contributes immensely to the total annual precipitation.

Key words： Kumtag Desert; precipitation; alluvial fan

Cite this article

PANG Yingjun,WU Bo,KONG Deyong,GAO Junliang . Precipitation characteristics in alluvial fan in the north and south of Kumtag Desert based on measured data[J]. Arid Zone Research, 2021 , 38(1) : 144 -153 . DOI: 10.13866/j.azr.2021.01.16

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