干旱区生态环境知识资源中心(Arid): Effect of cropping systems after abandoned salinized farmland reclamation on soil bacterial communities in arid northwest China

Arid

DOI	10.1016/j.still.2018.12.015
	Effect of cropping systems after abandoned salinized farmland reclamation on soil bacterial communities in arid northwest China
	Cheng, Zhibo 1,2; Chen, Yun 2; Zhang, Fenghua 1
通讯作者	Zhang, Fenghua
来源期刊	SOIL & TILLAGE RESEARCH
ISSN	0167-1987
EISSN	1879-3444
出版年	2019
卷号	187 页码:204-213
英文摘要	Cropping systems are extensively used in northwest China, which alter the soil structure and nutrients, causing the changes in the soil bacterial community. Although soil bacterial communities respond differently to altered cropping systems, little is known about possible effect of cropping systems on soil bacterial communities in reclaimed soils. Using pyrosequencing-based analysis of the 16S rRNA gene, we investigated the effect of 5-year cropping systems on bacterial communities in reclaimed soils in northwest China for the first time. The three cropping systems are: maize-wheat rotation (MW), tree intercrop with cotton (TC), and monoculture cotton (MC). We have observed soil properties are obviously changed by cropping systems. The lowest soil electrical conductivity (EC), the highest aggregate stability indices (MWD and GMD) and soil organic matter (SOM) content are found in MW (P < 0.05). The dominant phyla are Firmicutes, Proteobacteria, Chloroftexi and Actinobacteria and these are present across all samples from all treatments. The highest bacterial diversity is observed in MW. The relative abundance of dominant phyla are significantly correlated EC, SOM, Fe, MWD and GMD (P < 0.05), suggesting that EC, SOM, Fe, MWD and GMD are the most important factors in shaping soil bacterial communities. Functional predictions indicate that the abundance of amino acid metabolism, carbon metabolism, glycan biosynthesis, methane metabolism, two-component and fatty acid metabolism are all enriched in MW. Overall, our study reveal that different cropping systems have different impacts not only on bacterial composition and diversity, but also on the main metabolic functions. These findings guide our future work on soil bacterial metabolic functions in different cropping systems and will provide references for salinized farmland reclamation in arid areas.
英文关键词	Cropping systems Abandoned salinized farmland Bacterial community Metabolic functions High-throughput sequencing
类型	Article
语种	英语
国家	Peoples R China ; Australia
收录类别	SCI-E
WOS记录号	WOS:000458093900021
WOS关键词	MICROBIAL COMMUNITIES ; SALT TOLERANCE ; AGGREGATE STABILITY ; DIVERSITY ; TILLAGE ; MAIZE ; WHEAT ; RHIZOSPHERE ; MANAGEMENT ; FRACTIONS
WOS类目	Soil Science
WOS研究方向	Agriculture
来源机构	Commonwealth Scientific and Industrial Research Organisation
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218865
作者单位	1.Shihezi Univ, Agr Coll, Shihezi City 832003, Peoples R China; 2.CSIRO Land & Water, Canberra, ACT 2601, Australia
推荐引用方式 GB/T 7714	Cheng, Zhibo,Chen, Yun,Zhang, Fenghua. Effect of cropping systems after abandoned salinized farmland reclamation on soil bacterial communities in arid northwest China[J]. Commonwealth Scientific and Industrial Research Organisation,2019,187:204-213.
APA	Cheng, Zhibo,Chen, Yun,&Zhang, Fenghua.(2019).Effect of cropping systems after abandoned salinized farmland reclamation on soil bacterial communities in arid northwest China.SOIL & TILLAGE RESEARCH,187,204-213.
MLA	Cheng, Zhibo,et al."Effect of cropping systems after abandoned salinized farmland reclamation on soil bacterial communities in arid northwest China".SOIL & TILLAGE RESEARCH 187(2019):204-213.