干旱区生态环境知识资源中心(Arid): Grain Size Characteristics from Dry Playa Chagan Nur in Northern China

Arid

DOI	10.15244/pjoes/153022
	Grain Size Characteristics from Dry Playa Chagan Nur in Northern China
	Li, Haonian; Meng, Zhongju; Dang, Xiaohong; Qi, Shuai; Bao, Siqin
通讯作者	Bao, SQ
来源期刊	POLISH JOURNAL OF ENVIRONMENTAL STUDIES
ISSN	1230-1485
EISSN	2083-5906
出版年	2023
卷号	32 期号:1 页码:113-124
英文摘要	Dry salt lakes are widely distributed in semi-arid regions. Dry lake beds have been found to have a greater capacity to release dust. However, the particle size characteristics of dry lakebed soils have rarely been studied. To reveal the soil grain size characteristics, we used surface and subsurface soil from dry lake beds in semi-arid regions with different soil crusts as the object of study. We used particle size parameters and class-standard deviation methods to study the particle size variation patterns and the degree of variability. The results show that the dry lake was mainly composed of clay (1.36%-43.96%) and silt (5.5%-67.94%) particles. Soil particle characteristics show the Mean size (Mz) of (0.65-8.89 phi), poorly sorted (0.79-3.38 phi) and a clear linear relationship between dry lake bed skewness and sorting. There is a high variability between soil particle size fractions across the lake bed, with soil crusts and soil moisture protecting the loss of subsurface soil particles, hence the differences between surface and subsurface soil particles. However, the destruction of the soil crust and the evaporation of soil moisture accelerates the wind erosion of the subsurface soil particles. In the dry lake area, vegetation construction has promoted the accumulation of sand content (73.28% -93.08%). We found that the fractions 0.19-9.15 mu m, 9.15-36.99 mu m, 36.99-366.93 mu m, and 366.93-1214.72 mu m are susceptible to respond to environmental changes and contribute to dust storms. Therefore, local governments should treat and manage dried-up lakes to reduce the impact of salt dust on the ecosystem.
英文关键词	semi-arid dry lake semi-arid dry lake Lake Chagan Nur grain size characteristics grain size class-standard deviation
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000903823100001
WOS关键词	AEOLIAN SEDIMENT ; PARTICLE-SIZE ; DUST ; LAKE ; SURFACE
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398148
推荐引用方式 GB/T 7714	Li, Haonian,Meng, Zhongju,Dang, Xiaohong,et al. Grain Size Characteristics from Dry Playa Chagan Nur in Northern China[J],2023,32(1):113-124.
APA	Li, Haonian,Meng, Zhongju,Dang, Xiaohong,Qi, Shuai,&Bao, Siqin.(2023).Grain Size Characteristics from Dry Playa Chagan Nur in Northern China.POLISH JOURNAL OF ENVIRONMENTAL STUDIES,32(1),113-124.
MLA	Li, Haonian,et al."Grain Size Characteristics from Dry Playa Chagan Nur in Northern China".POLISH JOURNAL OF ENVIRONMENTAL STUDIES 32.1(2023):113-124.