Characteristics of aeolian environment in the Taitema Lake dry lake-basin section of the Golmud-Korla Railway

doi:10.7522/j.issn.1000-694X.2024.00160

Journal of Desert Research ›› 2025, Vol. 45 ›› Issue (2): 102-110.DOI: 10.7522/j.issn.1000-694X.2024.00160

Characteristics of aeolian environment in the Taitema Lake dry lake-basin section of the Golmud-Korla Railway

Qian Zhou¹^,²(), Yanbing Jiang¹^,², Lihai Tan¹(), Hongtao Wang¹, Ke Li³

^1.Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands / Dunhuang Gobi and Desert Ecology and Environment Reserch Station，Northwest Institute of Eco-Environment and Resources，Chinese Academy of Sciences，Lanzhou 730000，China
^2.University of Chinese Academy of Sciences，Beijing 100049，China
^3.Southwest Jiaotong University，Chengdu 610000，China

Received:2024-09-19 Revised:2024-11-19 Online:2025-03-20 Published:2025-03-26
Contact: Lihai Tan

Abstract

Abstract:

Aeolian environment is an important research content to analyze the causes of railway sand disasters in sandy areas. In this paper， through field investigation， combined with the analysis of wind data， the characteristics of aeolian environment in dry Taitema Lake section of Golmud-Korla Railway are analyzed. The results show that：（1） The grain size composition of the surface sediments in the dry lake-basin is dominated by very fine sand and silt， accounting for 81.62% of the total particulate matter content. The soil salt content is above 10 g·kg^-1， and the shear strength is 477.19 ± 151.26 kPa. （2） In 2018， 2019 and 2022， the average wind speed at 10 m height is 5.19 m·s^-1， and the average annual sand-driving wind speed （at 10 m height， ≥9 m·s^-1） is 13.02 m·s^-1. The average annual sand-driving wind frequency is 12.66%， mainly in the NE direction， mainly concentrated in April to October. The average frequency of gale （≥ 17 m·s^-1） is 1.64%， accounting for 12.95% of the sand-driving wind. （3） The average annual sand drift potential （DP） can reach 872.4 VU， which belongs to the high wind energy area and narrow single peak wind condition. （4） In 2018， 2019 and 2022， the total sand transport quantity is 2.37 m³·m^-1， and the main directions for sand transport are NE and E. In extreme duststorm weather， the sand transport quantity is large， accounting for 7.1% of the annual sand transport quantity.

Key words: aeolian environment, sand drift potential, sand transport quantity, dry lake-basin, Golmud-Korla Railway

CLC Number:

P931.3

Qian Zhou, Yanbing Jiang, Lihai Tan, Hongtao Wang, Ke Li. Characteristics of aeolian environment in the Taitema Lake dry lake-basin section of the Golmud-Korla Railway[J]. Journal of Desert Research, 2025, 45(2): 102-110.

Figures/Tables 13

Fig.1 Location of the study area （A）， dry lake-basin surface （B） and dust storm （C）

Fig.2 Wind power environment monitoring tower （A） and sand trap with eight directions （B）

Table 1 Classification of wind energy environment［28］

DP/(VU)	风能环境	RDP/DP	方向变率	风况类型
<200	低	<0.3	小比率	复合风况
200~400	中	0.3~0.8	中比率	锐双峰或钝双峰风况
≥400	高	>0.8	大比率	单峰风况

Fig.3 Grain size composition of sediments in dry lake-basin of Taitema Lake

Table 2 Salt content in the soil of dry up lake-basin region of Taitema Lake

指标	深度/cm
指标	0~5	5~10	10~20	20~40	40~60	60~80
含盐量 /（g·kg^-1）	11.85	15.45	17.65	17.60	18.65	14.05

Fig.4 Monthly average variation of sand-driving wind frequency

Fig.5 Sand-driving wind frequency roses

Table 3 Statistics on gale and gale days

年份	大风频次	频率/%	大风日数/d
2018	825	1.57	25
2019	951	1.81	37
2022	814	1.55	35
平均	863	1.64	31.7

Fig.6 Annual sand drift potential roses in Taitema Lake section of Golmud-Korla Railway

Fig.7 Seasonal sand drift potential roses in Taitema Lake section of Golmud-Korla Railway

Table 4 Statistical of total sand transport quantity in 2018， 2019， and 2022

指标	年份
指标	2018	2019	2022
单宽输沙量/（m³·m^-1）	0.74	1.12	0.51

Fig.8 Sand transport quantity in different directions in 2018， 2019， and 2022

Fig.9 Wind speed， direction （A）， and sand drift potential （B） from 10:50 on May 5 to 13:30 on May 6， 2019

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Characteristics of aeolian environment in the Taitema Lake dry lake-basin section of the Golmud-Korla Railway

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