Patterns and mechanisms of responses by soil microbial communities to nitrogen addition

生物群落 生物量(生态学) 氮气 生态系统 微生物种群生物学 化学 微生物 生态学 温带森林 自行车 环境科学 农学 生物 细菌 林业 有机化学 遗传学 地理
作者
Zhenghu Zhou,Chuankuan Wang,Mianhai Zheng,Lifen Jiang,Yiqi Luo
出处
期刊:Soil Biology & Biochemistry [Elsevier BV]
卷期号:115: 433-441 被引量:396
标识
DOI:10.1016/j.soilbio.2017.09.015
摘要

Abstract Anthropogenic nitrogen (N) deposition is expected to increase substantially and continuously in the future. Soil N availability regulates microbial communities and the decomposition and formation of soil organic matter, which have great impacts on global carbon (C) cycling. We conducted a meta-analysis based on 454 N-addition experiments in order to synthesize the patterns and mechanisms of responses by soil microbial communities to N addition in various biomes (i.e., boreal forest, temperate forest, tropical/subtropical forest, grassland, and desert). Results showed that the effects of N addition on the total microbial biomass varied depending on biome types, methodologies (fumigation–extraction technique vs. total phospholipid fatty acid), and N-addition rates. Nitrogen addition consistently decreased the microbial C:N and fungi to bacteria ratio (F:B), but increased Gram positive bacteria to Gram negative bacteria ratio (GP:GN) among biome types and N-addition rates. Nitrogen addition increased soil N availability and thereby resulted in soil acidification. Regression technique and principal component analyses showed that the shifts in the F:B and GP:GN mainly resulted from enhanced N availability due to N addition rather than soil acidification. When the N addition rate is lower than 100 kg N ha−1 year−1, about ten times higher than of global normal rate, the positive response of microbial growth was found. Overall, these findings revised the previous notion that N addition inhibited the microbial growth. Microbial species shifts might accentuate or mitigate the effects of alterations in microbial biomass at the ecosystem level, highlighting the critical role of microbial community composition in soil ecosystem functions under N deposition scenarios.
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
Akim应助shen采纳,获得10
2秒前
2秒前
DT发布了新的文献求助10
3秒前
赖晨靓发布了新的文献求助10
5秒前
酷酷的爆米花完成签到,获得积分10
7秒前
8秒前
10秒前
大个应助小虫采纳,获得10
10秒前
11完成签到,获得积分10
11秒前
11秒前
乐乐应助shi采纳,获得10
12秒前
王祉萱发布了新的文献求助10
13秒前
Avvei完成签到,获得积分10
13秒前
13秒前
路路发布了新的文献求助10
15秒前
英俊的铭应助notsoeasy采纳,获得10
15秒前
Aono完成签到 ,获得积分10
16秒前
研友_VZG7GZ应助11采纳,获得10
16秒前
自由的凛发布了新的文献求助10
17秒前
17秒前
沉默的半凡完成签到,获得积分10
18秒前
海棠依旧给海棠依旧的求助进行了留言
18秒前
19秒前
20秒前
小虫完成签到,获得积分10
21秒前
Deng完成签到,获得积分10
21秒前
21秒前
科目三应助科研通管家采纳,获得10
23秒前
科研通AI2S应助科研通管家采纳,获得10
23秒前
华仔应助科研通管家采纳,获得10
23秒前
汉堡包应助科研通管家采纳,获得10
23秒前
Akim应助科研通管家采纳,获得10
23秒前
Ava应助科研通管家采纳,获得10
23秒前
xingyuliu发布了新的文献求助30
23秒前
FashionBoy应助科研通管家采纳,获得10
23秒前
科目三应助科研通管家采纳,获得10
23秒前
科研通AI2S应助科研通管家采纳,获得10
23秒前
23秒前
Acer完成签到 ,获得积分10
24秒前
斯文败类应助义气萝卜头采纳,获得10
24秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
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 3976253
求助须知:如何正确求助?哪些是违规求助? 3520405
关于积分的说明 11203301
捐赠科研通 3257028
什么是DOI,文献DOI怎么找? 1798589
邀请新用户注册赠送积分活动 877755
科研通“疑难数据库(出版商)”最低求助积分说明 806521