Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/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
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ISSN | 0048-9697 |
EISSN | 1879-1026 |
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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