干旱区生态环境知识资源中心(Arid): The influence of biocrusts on the spatial pattern of soil bacterial communities: A case study at landscape and slope scales

Arid

DOI	10.1016/j.soilbio.2020.107721
	The influence of biocrusts on the spatial pattern of soil bacterial communities: A case study at landscape and slope scales
	Su, Yan-gui 1,2; Chen, Ying-Wu 3; Padilla, Francisco M.4; Zhang, Yuan-ming2 ; Huang, Gang 1
通讯作者	Zhang, Yuan-ming ; Huang, Gang
来源期刊	SOIL BIOLOGY & BIOCHEMISTRY
ISSN	0038-0717
出版年	2020
卷号	142
英文摘要	Biocrusts are a functional unit in arid and semiarid areas, their development has significant recruitment and screening effects on soil microbial communities. Microbial composition of biocrusts exhibits significant geographical patterns, but the regulation of biocrust development on the geographical patterns in unclear. In this study, we examined bacterial communities from cyanobacterial-lichen and moss crust soils in five desert habitats in northern China, and evaluated the relative importance of environmental factors and biocrust development versus geographic distance to the distance-decay relationship. To explore the effects of the sampling scale on geographical patterns, we also examined soil bacterial communities along the slope of sand dunes. Across the five desert habitats, bacterial a-diversity, phylogenetic diversity, and the dominant bacterial phyla in cyanobacteriallichen crusts did not increase consistently with precipitation increase, instead bacterial community composition was mainly impacted by soil nutrients (SOC, TP) and biocrust development (thickness, cover and Chl a). Bacterial p-diversity in both cyanobacterial-lichen and moss crusts showed strong distance-decay relationships across the landscape scale; bacterial community composition in cyanobacterial-lichen crusts differed significantly among five desert habitats. Environmental and biocrust development variables explained bacterial community variation better than geographic distance, suggesting a weaker influence of dispersal limitation on the bacterial communities in biocrusts. In addition, the distance-decay rate was higher at the slope than that at the landscape scale, suggesting a fast turnover rate of bacterial community communities induced by topography. Our study implies that soil attributes and biocrust development have more profound impacts on soil bacterial communities than precipitation, which provides novel insights into the geographical distribution and assemblage of soil bacterial communities in deserts. Moreover, our study is significant with respect to understanding the potential responses of soil microbial communities to climate change in desert areas under the scenario of increasing precipitation variation.
英文关键词	Bacterial community Biocrusts Desert ecosystem Distance-decay relationship
类型	Article
语种	英语
国家	Peoples R China ; Spain
收录类别	SCI-E
WOS记录号	WOS:000518706800021
WOS关键词	COLORADO NATIONAL MONUMENT ; HILLY LOESS PLATEAU ; FUNGAL COMMUNITIES ; MICROBIAL BIOMASS ; GURBANTUNGGUT DESERT ; SUCCESSIONAL STAGES ; SPECIES-DIVERSITY ; EXTRACTION METHOD ; CARBON FIXATION ; GLOBAL PATTERNS
WOS类目	Soil Science
WOS研究方向	Agriculture
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315584
作者单位	1.Fujian Normal Univ, Inst Geog Sci, 8 Shangshan Rd, Fuzhou 350007, Fujian, Peoples R China; 2.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Key Lab Biogeog & Bioresource Arid Land, 818 South Beijing Rd, Urumqi 830011, Xinjiang, Peoples R China; 3.Henan Univ Sci & Technol, Forestry Coll, Kaiyuan Rd 263, Luoyang 471000, Peoples R China; 4.Univ Almeria, Dept Agron, Carretera Sacramento S-N, Almeria 04120, Spain
推荐引用方式 GB/T 7714	Su, Yan-gui,Chen, Ying-Wu,Padilla, Francisco M.,et al. The influence of biocrusts on the spatial pattern of soil bacterial communities: A case study at landscape and slope scales[J]. 中国科学院新疆生态与地理研究所,2020,142.
APA	Su, Yan-gui,Chen, Ying-Wu,Padilla, Francisco M.,Zhang, Yuan-ming,&Huang, Gang.(2020).The influence of biocrusts on the spatial pattern of soil bacterial communities: A case study at landscape and slope scales.SOIL BIOLOGY & BIOCHEMISTRY,142.
MLA	Su, Yan-gui,et al."The influence of biocrusts on the spatial pattern of soil bacterial communities: A case study at landscape and slope scales".SOIL BIOLOGY & BIOCHEMISTRY 142(2020).