Effect of high soil C/N ratio and nitrogen limitation caused by the long-term combined organic-inorganic fertilization on the soil microbial community structure and its dominated SOC decomposition

酸杆菌 肥料 微生物种群生物学 肥料 稻草 农学 有机质 土壤碳 土壤pH值 土壤有机质 化学 放线菌门 土工试验 生物 土壤水分 生态学 有机化学 细菌 基因 生物化学 遗传学 16S核糖体RNA
作者
Jiwen Cui,Ruili Zhu,Xiya Wang,Xinpeng Xu,Chao Ai,Ping He,Guoqing Liang,Wei Zhou,Ping Zhu
出处
期刊:Journal of Environmental Management [Elsevier BV]
卷期号:303: 114155-114155 被引量:100
标识
DOI:10.1016/j.jenvman.2021.114155
摘要

The application of organic fertilizers, such as straw and manure, is an efficient approach to maintain soil productivity. However, the effect of these organic fertilizers on soil microbial nutrient balance has not yet been established. In this study, the effects of the long-term combined organic-inorganic fertilization on microbial community were investigated by conducting a 30-year-long field test. Overall, the following five fertilizer groups were employed: inorganic NP fertilizer (NP), inorganic NK fertilizer (NK), inorganic NPK fertilizer (NPK), NPK + manure (MNPK), and NPK + straw (SNPK). The results indicated that the mean natural logarithm of the soil C:N:P acquisition enzyme ratio was 1.04:1.11:1.00 under organic-inorganic treatments, which showed a deviation from its overall mean ratio of 1:1:1. This indicates that microbial resources do not have a balance. Vector analysis (vector angle <45°) and threshold elemental ratio analysis (RC:N-TERC:N > 0) further demonstrated that the microbial metabolism was limited by Nitrogen (N) under SNPK and MNPK treatments. N limitation further influenced soil microbial community structure and its dominated SOC decomposition. Specifically, Microbial communities transformed into a more oligotrophic-dominant condition (fungal, Acidobacteria, Chloroflexi) from copiotrophic-dominant (Proteobacteria, Actinobacteria) condition with increasing N limitation. Lysobacter genus and Blastocatellaceae family, in the bacterial communities along with the Mortierella elongata species in fungal communities, were markedly associated with the N limitation, which could be the critical biomarker that represented N limitation. Both correlation analysis and partial least squares path modeling showed significant positive effects of N limitation on the ratio of bacterial functional genes (Cellulase/Amylase), involved in recalcitrant SOC degradation.
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
非常完成签到,获得积分10
3秒前
zzz完成签到,获得积分10
4秒前
彭于彦祖应助bwx采纳,获得50
5秒前
36038138完成签到 ,获得积分10
6秒前
mango完成签到,获得积分10
6秒前
QiWei完成签到 ,获得积分10
6秒前
天天快乐应助jiangjiang采纳,获得10
6秒前
www完成签到 ,获得积分10
6秒前
6秒前
7秒前
8秒前
Autin完成签到,获得积分0
9秒前
李清水完成签到,获得积分10
9秒前
9秒前
wanci应助赵雪萌采纳,获得10
11秒前
科研果发布了新的文献求助10
12秒前
12秒前
12秒前
14秒前
15秒前
15秒前
Amon完成签到 ,获得积分10
15秒前
Lillian完成签到,获得积分10
16秒前
桐桐应助畅快的涵蕾采纳,获得30
17秒前
胡翔完成签到,获得积分10
18秒前
18秒前
nyfz2002发布了新的文献求助10
18秒前
18秒前
Phung完成签到,获得积分20
19秒前
科研通AI5应助尔尔采纳,获得10
19秒前
佩佩发布了新的文献求助10
20秒前
赵雪萌完成签到,获得积分10
20秒前
Marilyn完成签到,获得积分10
21秒前
小朱佩奇发布了新的文献求助10
22秒前
情怀应助舒适的尔容采纳,获得10
23秒前
郭囯完成签到,获得积分10
24秒前
缥缈的背包完成签到,获得积分10
25秒前
七七完成签到 ,获得积分10
26秒前
fugu0完成签到,获得积分10
28秒前
Zenobia完成签到,获得积分10
30秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Technical Brochure TB 814: LPIT applications in HV gas insulated switchgear 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Picture Books with Same-sex Parented Families: Unintentional Censorship 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
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 3969884
求助须知:如何正确求助?哪些是违规求助? 3514604
关于积分的说明 11174901
捐赠科研通 3249928
什么是DOI,文献DOI怎么找? 1795149
邀请新用户注册赠送积分活动 875599
科研通“疑难数据库(出版商)”最低求助积分说明 804891