干旱区生态环境知识资源中心(Arid): MICROGEOMORPHOLOGY RELATED SOIL CHARACTERISTICS DETERMINE THE HETEROGENEITY OF BIOLOGICAL SOIL CRUST COMMUNITIES

Arid

DOI	10.4461/GFDQ.2019.42.8
	MICROGEOMORPHOLOGY RELATED SOIL CHARACTERISTICS DETERMINE THE HETEROGENEITY OF BIOLOGICAL SOIL CRUST COMMUNITIES
	Hassanzadeh Bashtian, Mahvan; Sepehr, Adel; Bahreini, Masoumeh; Farzam, Mohammad
通讯作者	Sepehr, A (corresponding author), Ferdowsi Univ Mashhad, Dept Desert & Arid Zones Management, Mashhad, Razavi Khorasan, Iran.
来源期刊	GEOGRAFIA FISICA E DINAMICA QUATERNARIA
ISSN	0391-9838
EISSN	1724-4781
出版年	2019
卷号	42 期号:1 页码:99-111
英文摘要	We examined how biological soil crust (BSC) communities are affected by micro-geomorphology and soil characteristics in an arid ecosystem in northeastern Iran. Sampling was carried out systematically in the summer of 2016 along a geomorphic gradient within an alluvial fan by using micro-scale plots (0.25 m(2)) and soil samples from the top soil layer (0-5 cm). According to the geomorphologic features and particle size distribution, the landform surfaces were divided into three units across the topographic gradient. From top downstream: Unit 1 involved coarse particles, Unit 2 included medium, and unit 3 comprised fine deposits., A total of 16 samples were taken for each unit (48 samples in total) along the alluvial fan from the apex to the base sector. The results indicated that micro-geomorphic and soil characteristics play an important role in the development of biological soil crust (BSC) micro-habitats. Decreasing content of calcium carbonate, pH, and soil salinity versus increasing soil moisture and clay content along the gradient of the alluvial fan showed a relevant correlation with increased BSCs coverage. BSCs increased along the landform gradient, although their diversity tended to decrease; in that way complex communities in the apex (Unit 1) involved cyanobacteria, lichen, mosses, and algae, while the dominant BSCs in the base (Unit 3) included moss species.
英文关键词	Alluvial fan Biological Soil Crusts (BSCs) Microgeomorphology Soil heterogeneity
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000503191600008
WOS关键词	MOJAVE DESERT ; SPATIAL-DISTRIBUTION ; MICROBIOTIC CRUSTS ; TRAMPLING DISTURBANCE ; COLORADO PLATEAU ; SEDIMENT YIELD ; TENGGER-DESERT ; NEGEV DESERT ; EROSION ; BRYOPHYTE
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369366
作者单位	[Hassanzadeh Bashtian, Mahvan; Sepehr, Adel] Ferdowsi Univ Mashhad, Dept Desert & Arid Zones Management, Mashhad, Razavi Khorasan, Iran; [Bahreini, Masoumeh] Ferdowsi Univ Mashhad, Dept Biol, Mashhad, Razavi Khorasan, Iran; [Farzam, Mohammad] Ferdowsi Univ Mashhad, Dept Watershed & Rangelands Management, Mashhad, Razavi Khorasan, Iran
推荐引用方式 GB/T 7714	Hassanzadeh Bashtian, Mahvan,Sepehr, Adel,Bahreini, Masoumeh,et al. MICROGEOMORPHOLOGY RELATED SOIL CHARACTERISTICS DETERMINE THE HETEROGENEITY OF BIOLOGICAL SOIL CRUST COMMUNITIES[J],2019,42(1):99-111.
APA	Hassanzadeh Bashtian, Mahvan,Sepehr, Adel,Bahreini, Masoumeh,&Farzam, Mohammad.(2019).MICROGEOMORPHOLOGY RELATED SOIL CHARACTERISTICS DETERMINE THE HETEROGENEITY OF BIOLOGICAL SOIL CRUST COMMUNITIES.GEOGRAFIA FISICA E DINAMICA QUATERNARIA,42(1),99-111.
MLA	Hassanzadeh Bashtian, Mahvan,et al."MICROGEOMORPHOLOGY RELATED SOIL CHARACTERISTICS DETERMINE THE HETEROGENEITY OF BIOLOGICAL SOIL CRUST COMMUNITIES".GEOGRAFIA FISICA E DINAMICA QUATERNARIA 42.1(2019):99-111.