Arid
DOI10.1016/j.scitotenv.2018.02.259
Effect of reclamation of abandoned salinized farmland on soil bacterial communities in arid northwest China
Cheng, Zhibo1,2; Chen, Yun2; Zhang, Fenghua1
通讯作者Zhang, Fenghua
来源期刊SCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
EISSN1879-1026
出版年2018
卷号630页码:799-808
英文摘要

Understanding the impact of reclamation of abandoned salinized farmland on soil bacterial community is of great importance for maintaining soil health and sustainability in arid regions. In this study, we used field sampling and 454 pyrosequencing methods to investigate the effects of 5-year reclamation treatments on soil properties, bacterial community composition and diversity. The four reclamation treatments are: abandoned salinized farmland (CK), cropland (CL), grassland (GL) and woodland (WL). We have found soil properties are significantly altered by abandoned salinized farmland reclamation. In particular, the lowest soil pH and electrical conductivity (EC) values are observed in CL (P < 0.05). The dominant phyla are Firmicutes, Proteobacteria, Chloroflexi, Actinobacteria and Acidobacteria in all treatments. At the genus levels, the relative abundance of Bacillus, Lactococcus, Streptococcus and Enterococcus in CK, GL and WL is significantly higher than in CL. Bacterial diversity indices (i.e. ACE, Chao and Shannon) dramatically increase after the reclamation, with the highest in CL. Similar patterns of bacterial communities have been observed in CK, GL and WL soils, but significantly different from CL. Regression analyses indicate that the relative abundance of these phyla are significantly correlated with soil Fe, pH and EC. Results from non-metric multidimensional scaling (NMDS) and redundancy analysis (RDA) indicate that soil Fe content, EC and pH are the most important factors in shaping soil bacterial communities. Overall, results indicate that abandoned salinized farmland reclaimed for CL significantly decrease soil pH and EC, and increase soil bacterial community diversity. Soil Fe concentration, EC and pH are the dominant environmental factors affecting soil bacterial community composition. The important role of Fe concentration in shaping bacterial community composition is a new discovery among the similar studies. (C) 2018 Published by Elsevier B.V.


英文关键词Abandoned salinized farmland Reclamation Soil bacterial community Composition and diversity 454 pyrosequencing
类型Article
语种英语
国家Peoples R China ; Australia
收录类别SCI-E
WOS记录号WOS:000432467700079
WOS关键词LAND-USE ; TILLAGE PRACTICES ; NORTHEAST CHINA ; DIVERSITY ; RHIZOSPHERE ; GRADIENT ; FERTILIZATION ; ENVIRONMENT ; MANAGEMENT ; SYSTEMS
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
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/2XILL650/212953
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 reclamation of abandoned salinized farmland on soil bacterial communities in arid northwest China[J]. Commonwealth Scientific and Industrial Research Organisation,2018,630:799-808.
APA Cheng, Zhibo,Chen, Yun,&Zhang, Fenghua.(2018).Effect of reclamation of abandoned salinized farmland on soil bacterial communities in arid northwest China.SCIENCE OF THE TOTAL ENVIRONMENT,630,799-808.
MLA Cheng, Zhibo,et al."Effect of reclamation of abandoned salinized farmland on soil bacterial communities in arid northwest China".SCIENCE OF THE TOTAL ENVIRONMENT 630(2018):799-808.
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