干旱区生态环境知识资源中心(Arid): Spatial relationship of landform surface features and biocrusts, and their effect on soil microbial biomass on an alluvial fan

Arid

DOI	10.1002/esp.5771
	Spatial relationship of landform surface features and biocrusts, and their effect on soil microbial biomass on an alluvial fan
	Bashtian, Mahvan Hassanzadeh; Karimi, Alireza; Sepehr, Adel; Lakzian, Amir; Caballero, Emilio Rodriguez
通讯作者	Karimi, A
来源期刊	EARTH SURFACE PROCESSES AND LANDFORMS
ISSN	0197-9337
EISSN	1096-9837
出版年	2024
卷号	49 期号:4 页码:1348-1360
英文摘要	The spatial cover of biocrusts represents a suitable habitat for the activity of soil microorganisms in semi-arid and arid regions. Microorganisms are one of the essential components of soil quality. Therefore, it is necessary to understand the processes of biocrust habitat formation in landforms and their mutual relationship with soil properties. We studied the spatial distribution of biocrusts and their effect on soil microbial biomass and carbon activity in a semi-arid alluvial fan in NE Iran. A total of 72 soil samples (using plots 0.25 m2) from the topsoil layers (0-5 cm) were collected along the alluvial fan in September 2020. Soil surface properties and microbial biomass in two categories of biocrust and non-biocrust were investigated in three classes of biocrusts coverage obtained by geostatistics. Our results revealed that biocrusts had a negative correlation with gravel coverage and elevation; in contrast, the suitable spaces for biocrusts growth were created by cobble clasts. The biocrusts have provided favourable conditions for soil microorganisms by altering the properties of the soil (such as increasing organic carbon, nitrogen and available phosphorus and decreasing pH), and thus they increased basal soil respiration and microbial biomass. Different microbial activities were led by the predominant type of biocrusts, as the chlorolichen crusts had the most significant effect on increasing the microbial biomass phosphorus while cyanolichen crusts increased the microbial biomass carbon. Moss and cyanolichen crusts increased microbial activity and respiration more than cyanobacteria crusts. Therefore, the soil quality has improved by biocrusts in semi-arid ecosystems. Landform surface features influenced the distribution of biocrusts. Biocrust cover provided suitable habitat for soil microorganisms. Different types of dominant biocrusts promoted different microbial activity.image
英文关键词	alluvial fan biocrusts carbonation radial basis function soil microbial biomass
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001147115300001
WOS关键词	BIOLOGICAL SOIL ; MOJAVE DESERT ; LOESS PLATEAU ; CRUSTS ; COMMUNITY ; CARBON ; DISTURBANCE ; PHOSPHORUS ; NITROGEN ; EROSION
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403317
推荐引用方式 GB/T 7714	Bashtian, Mahvan Hassanzadeh,Karimi, Alireza,Sepehr, Adel,et al. Spatial relationship of landform surface features and biocrusts, and their effect on soil microbial biomass on an alluvial fan[J],2024,49(4):1348-1360.
APA	Bashtian, Mahvan Hassanzadeh,Karimi, Alireza,Sepehr, Adel,Lakzian, Amir,&Caballero, Emilio Rodriguez.(2024).Spatial relationship of landform surface features and biocrusts, and their effect on soil microbial biomass on an alluvial fan.EARTH SURFACE PROCESSES AND LANDFORMS,49(4),1348-1360.
MLA	Bashtian, Mahvan Hassanzadeh,et al."Spatial relationship of landform surface features and biocrusts, and their effect on soil microbial biomass on an alluvial fan".EARTH SURFACE PROCESSES AND LANDFORMS 49.4(2024):1348-1360.