干旱区生态环境知识资源中心(Arid): Application of particle size distribution throughout the soil profile as a criterion for recognition of newly developed geoforms in the Southeastern Caspian coast

Arid

DOI	10.1016/j.catena.2021.105362
	Application of particle size distribution throughout the soil profile as a criterion for recognition of newly developed geoforms in the Southeastern Caspian coast
	Samiei-Fard, Ramin; Heidari, Ahmad; Konyushkova, Maria; Mahmoodi, Shahla
通讯作者	Heidari, A (corresponding author), Univ Tehran, Soil Sci Dept, Karaj, Iran.
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2021
卷号	203
英文摘要	Soils vary depending on the type and intensity of interactions between the geoforms(1) and the soils. Coastal geoforms, due to special soil-forming features, contain less evolved but distinctive soils with different physicochemical and morphological properties. The particle size distribution (PSD) is one of the most important indicators to understand the dominant conditions in sedimentary environments and determination of soil parent material. The purpose of this study was to use the PSD throughout the soil profile as an auxiliary analytical characteristic to identify the landforms in combination with surface topography and soil-forming factors. The estuarine geomorphic environment of the southeastern coast of the Caspian Sea, with about 480 km(2) area, a semi-arid climate (350 mm precipitation, 17.6 degrees C temperature) and coastal marine environment, was studied. Grid sampling consisting of 4 rows 6 km apart and 20 points in each row 1 km apart; 15 profiles; 61 auger holes, and 4 inaccessible points was performed. In total, 456 soil samples from soil profiles and auger points were collected. In addition to routine analyses, detailed PSD analysis (20 hydrometer readings) was done in all samples. Maps of the size fractions were prepared using ArcGIS 10.6 for each layer to illustrate 3D variations in PSD. Three types of granulometric curves including: 1) a sigmoid curve characteristic of free sediment accumulation, 2) a logarithmic curve characteristic of a torrential flow or splay deposit and 3) a parabolic curve characteristic of an accumulation forced by an obstacle obstructing the flow were determined across the study area and at different depths. The spatial (from the coast to a distance of 20 km) and temporal (across different layers from the soil surface to a depth of 120 cm) PSD variations were found to be significant in the study area. This information is useful in identifying lagoons, barriers, alluvial terraces and small islands in the coastal plain areas.
英文关键词	Soil geomorphology Coastal geomorphology Granulometry Three-dimensional soil mapping Sedimentary environments
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000654354000058
WOS关键词	SEA-LEVEL CHANGES ; GEOMORPHOLOGY ; TURKMENISTAN ; VEGETATION ; EVOLUTION ; SAND
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368601
作者单位	[Samiei-Fard, Ramin; Heidari, Ahmad; Mahmoodi, Shahla] Univ Tehran, Soil Sci Dept, Karaj, Iran; [Konyushkova, Maria] Lomonosov Moscow State Univ, Moscow 119991, Russia
推荐引用方式 GB/T 7714	Samiei-Fard, Ramin,Heidari, Ahmad,Konyushkova, Maria,et al. Application of particle size distribution throughout the soil profile as a criterion for recognition of newly developed geoforms in the Southeastern Caspian coast[J],2021,203.
APA	Samiei-Fard, Ramin,Heidari, Ahmad,Konyushkova, Maria,&Mahmoodi, Shahla.(2021).Application of particle size distribution throughout the soil profile as a criterion for recognition of newly developed geoforms in the Southeastern Caspian coast.CATENA,203.
MLA	Samiei-Fard, Ramin,et al."Application of particle size distribution throughout the soil profile as a criterion for recognition of newly developed geoforms in the Southeastern Caspian coast".CATENA 203(2021).