Effect of reclamation of abandoned salinized farmland on soil bacterial communities in arid northwest China

酸杆菌 土地复垦 厚壁菌 放线菌门 蛋白质细菌 土壤pH值 农学 环境科学 土壤水分 生态学 生物 细菌 16S核糖体RNA 遗传学
作者
Zhibo Cheng,Yun Chen,Fenghua Zhang
出处
期刊:Science of The Total Environment [Elsevier BV]
卷期号:630: 799-808 被引量:48
标识
DOI:10.1016/j.scitotenv.2018.02.259
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.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
wanci应助HJJHJH采纳,获得20
1秒前
专注的水壶完成签到 ,获得积分10
3秒前
Bob完成签到 ,获得积分10
3秒前
phy完成签到,获得积分10
3秒前
7秒前
7秒前
LX77bx完成签到,获得积分10
9秒前
外向的醉易完成签到,获得积分10
10秒前
SharonDu完成签到 ,获得积分10
11秒前
12秒前
yuncong323完成签到,获得积分10
13秒前
huohuo完成签到,获得积分10
15秒前
CB完成签到,获得积分10
16秒前
16秒前
17秒前
儒雅路人完成签到,获得积分10
18秒前
OLDBLOW完成签到,获得积分10
19秒前
19秒前
liupangzi完成签到,获得积分10
19秒前
wang完成签到,获得积分10
19秒前
20秒前
Catherkk发布了新的文献求助10
20秒前
lcdamoy完成签到,获得积分10
21秒前
钱浩然发布了新的文献求助10
21秒前
烊烊发布了新的文献求助10
22秒前
十曰完成签到,获得积分10
27秒前
jjjjchou完成签到,获得积分10
28秒前
虚心的不二完成签到 ,获得积分10
30秒前
xuzj应助科研通管家采纳,获得10
31秒前
小马甲应助科研通管家采纳,获得10
31秒前
31秒前
思源应助科研通管家采纳,获得10
31秒前
31秒前
研友_VZG7GZ应助科研通管家采纳,获得10
31秒前
fang应助科研通管家采纳,获得10
31秒前
隐形曼青应助科研通管家采纳,获得10
31秒前
科研通AI5应助科研通管家采纳,获得10
31秒前
FashionBoy应助科研通管家采纳,获得10
31秒前
shiizii应助科研通管家采纳,获得10
31秒前
33秒前
高分求助中
【提示信息,请勿应助】关于scihub 10000
Les Mantodea de Guyane: Insecta, Polyneoptera [The Mantids of French Guiana] 3000
徐淮辽南地区新元古代叠层石及生物地层 3000
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Handbook of Industrial Diamonds.Vol2 1100
Global Eyelash Assessment scale (GEA) 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 550
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 4038235
求助须知:如何正确求助?哪些是违规求助? 3575992
关于积分的说明 11374009
捐赠科研通 3305760
什么是DOI,文献DOI怎么找? 1819276
邀请新用户注册赠送积分活动 892662
科研通“疑难数据库(出版商)”最低求助积分说明 815022