干旱区生态环境知识资源中心(Arid): Soil bacterial community succession during desertification in a desert steppe ecosystem

Arid

DOI	10.1002/ldr.3545
	Soil bacterial community succession during desertification in a desert steppe ecosystem
	Fan, Miaochun 1,2,3; Li, Jiajia 3; Tang, Zhuangsheng 4; Shangguan, Zhouping 1,2,3
通讯作者	Shangguan, Zhouping
来源期刊	LAND DEGRADATION & DEVELOPMENT
ISSN	1085-3278
EISSN	1099-145X
出版年	2020
卷号	31 期号:13 页码:1662-1674
英文摘要	Desertification often occurs in fragile steppe ecosystems, which may lead to severe soil degradation. Understanding how soil microbial communities respond to desertification is critical for ecological restoration of degraded desert steppes. We used an Ion S5 (TM) XL sequencing platform to explore the soil bacterial community succession across four desertification stages in a desert steppe in Ningxia, China. The results showed that soils from potential to light desertification stage had similar physicochemical properties, whereas significantly lower macronutrients, silt, and clay contents and higher pH, moisture, and sand contents were observed in the severe and very severe stages . Due to change in soil conditions, bacterial communities shifted drastically across the four stages. Variation in bacterial community composition was driven mainly by the deterministic processes (i.e., habitat filtering based on resource availability and space limitations), but their effects decreased toward the very severe desertification stage. More potential indicator species including members of the genera Nitrosomonas, Pirellula, and Methylobacterium were selected to predict very severe desertification relative to the other three stages. These potential indicators could survive in a wide range of habitats with low availability of carbon and nitrogen sources. Co-occurrence network analysis revealed that most of soil microorganisms might form symbiotic relationships in response to the habitat heterogeneity caused by desertification. In conclusion, as desertification intensified, distinct shifts in soil bacterial communities were driven primarily by the deterministic processes, which provide new insights for the restoration of degraded habitats and sustainable development of land resources.
英文关键词	bacterial community desertification deterministic processes indicator taxa temporal succession
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000515036000001
WOS关键词	MICROBIAL COMMUNITY ; ASSEMBLY PROCESSES ; DIVERSITY ; PLATEAU
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315127
作者单位	1.Chinese Acad Sci, 26 Xinong Rd, Yangling 712100, Peoples R China; 2.Inst Soil & Water Conservat, Minist Water Resources, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China; 3.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess, Yangling 712100, Peoples R China; 4.Gansu Agr Univ, Coll Grassland Sci, Key Lab Grassland Ecosyst, Minist Educ, Lanzhou 730070, Peoples R China
推荐引用方式 GB/T 7714	Fan, Miaochun,Li, Jiajia,Tang, Zhuangsheng,et al. Soil bacterial community succession during desertification in a desert steppe ecosystem[J]. 西北农林科技大学,2020,31(13):1662-1674.
APA	Fan, Miaochun,Li, Jiajia,Tang, Zhuangsheng,&Shangguan, Zhouping.(2020).Soil bacterial community succession during desertification in a desert steppe ecosystem.LAND DEGRADATION & DEVELOPMENT,31(13),1662-1674.
MLA	Fan, Miaochun,et al."Soil bacterial community succession during desertification in a desert steppe ecosystem".LAND DEGRADATION & DEVELOPMENT 31.13(2020):1662-1674.