干旱区生态环境知识资源中心(Arid): Distinct abundance patterns of nitrogen functional microbes in desert soil profiles regulate soil nitrogen storage potential along a desertification development gradient

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DOI	10.1016/j.catena.2020.104716
	Distinct abundance patterns of nitrogen functional microbes in desert soil profiles regulate soil nitrogen storage potential along a desertification development gradient
	Bu, Lianyan; Peng, Ziheng; Tian, Jing; Song, Fangqin; Wei, Gehong; Wang, Honglei
通讯作者	Wei, GH
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2020
卷号	194
英文摘要	With ongoing global climate change and human activities, increasing desertification plays a predominant role in increasing soil nutrient losses. Soil nitrogen (N) is the essential limiting nutrient supporting plant growth and evaluating soil nutrient content, especially in desert ecosystems. N microbial processes will ultimately restore and maintain the balance in the soil N cycle, but the damage caused by desertification to soil N functional microorganisms associated with N supply, transformation, and loss is poorly understood. We examined changes in soil N and N functional gene (NFG) abundances within vertical profiles (i.e., soil depths of 0-100 cm) throughout the desertification process. We found that the abundance of N functional genes (NFGs) (except the N-fixation gene) decreased during the desertification process, almost all NFGs were attenuated along the vertical profiles, and available phosphorus (AP), soil water content (SWC) and pH were the best explanatory variables. The sums of (AOA + AOB) (associated with available N transformation) and (nirK + nirS + qnorB + nosZ) (associated with N loss) significantly decreased as desertification progressed, leading to decreased N transformation and loss potential. The (nifH + chiA) associated with available N supply increased along the desertification process gradient, suggesting enhanced potential for the acquisition available N. The increased ratio of (nifH + chiA + AOA + AOB)/(nirK + nirS + qnorB + nosZ) (associated with available N storage) collaboratively contributed to enhanced available N storage potential throughout the desertification process. Our results lay the foundation for better understanding the distinct responses of NFGs to desertification and the process through which they ultimately regulate available N storage in the degraded soils of desert ecosystems.
英文关键词	Desert ecosystems Nitrogen functional genes Soil profile Available nitrogen Desertification process
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000566699000050
WOS关键词	FLOW CONSTRUCTED WETLAND ; COMMUNITY STRUCTURE ; NUTRIENT ENRICHMENT ; ABANDONED FARMLAND ; AMMONIA OXIDIZERS ; GENES ; VEGETATION ; BACTERIAL ; REMOVAL ; DEPTH
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
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/2XILL650/326085
作者单位	[Bu, Lianyan; Peng, Ziheng; Song, Fangqin; Wei, Gehong] Northwest A&F Univ, Coll Life Sci, Shaanxi Key Lab Agr & Environm Microbiol, State Key Lab Crop Stress Biol Arid Areas, Yangling 712100, Shaanxi, Peoples R China; [Tian, Jing; Wang, Honglei] Northwest A&F Univ, Inst Soil & Water Conservat, Shaanxi Key Lab Agr & Environm Microbiol, State Key Lab Crop Stress Biol Arid Areas, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Bu, Lianyan,Peng, Ziheng,Tian, Jing,et al. Distinct abundance patterns of nitrogen functional microbes in desert soil profiles regulate soil nitrogen storage potential along a desertification development gradient[J]. 西北农林科技大学,2020,194.
APA	Bu, Lianyan,Peng, Ziheng,Tian, Jing,Song, Fangqin,Wei, Gehong,&Wang, Honglei.(2020).Distinct abundance patterns of nitrogen functional microbes in desert soil profiles regulate soil nitrogen storage potential along a desertification development gradient.CATENA,194.
MLA	Bu, Lianyan,et al."Distinct abundance patterns of nitrogen functional microbes in desert soil profiles regulate soil nitrogen storage potential along a desertification development gradient".CATENA 194(2020).