亲爱的研友该休息了!由于当前在线用户较少,发布求助请尽量完整的填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!身体可是革命的本钱,早点休息,好梦!

Stoichiometric imbalance and microbial community regulate microbial elements use efficiencies under nitrogen addition

矿化(土壤科学) 微生物种群生物学 化学 环境化学 土壤水分 氮气 温带森林 生物量(生态学) 农学 土壤有机质 土壤碳 营养物 氮气循环 细菌 温带气候 土壤科学 环境科学 植物 生物 遗传学 有机化学
作者
Jing Li,Changpeng Sang,Jingyi Yang,Lili Qu,Zongwei Xia,Hao Sun,Ping Jiang,Xugao Wang,Hongbo He,Chao Wang
出处
期刊:Soil Biology & Biochemistry [Elsevier]
卷期号:156: 108207-108207 被引量:77
标识
DOI:10.1016/j.soilbio.2021.108207
摘要

Microbial elements use efficiencies are the important parameters in regulating soil carbon (C) and nitrogen (N) mineralization processes. Microbial C use efficiency (CUE) describes the proportion of C used for growth relative to the total organic C uptake. As such, high CUE values mean relatively less CO2 emission and more C retention in microbial biomass. Similarly, a higher microbial N use efficiency (NUE) indicates efficient biomass N sequestration and less N mineralization. However, very little is known how the microbial CUE and NUE are affected by N enrichment in forest soils. Here, we studied soil microbial CUE and NUE simultaneously using 18O-water tracer approach in a long-term N addition experiment comprising control (atmospheric N deposition, 2.7 g N m−2 yr−1), low N addition (atmospheric N deposition + 2.5 g N m−2 yr−1) and high N addition (atmospheric N deposition + 7.5 g N m−2 yr−1) in a temperate forest. We found microbial CUE responses to N addition were dependent on N addition rates and soil horizons. Specifically, low N addition significantly increased the microbial CUE by 45.12% while high N addition significantly reduced it by 27.84% in organic soil. Further, mineral soil microbial CUE did not change under low N addition but significantly increased by 133.18% under high N addition. We also found microbial NUE decreased with increasing N addition rate in organic soil but showed an opposite pattern in mineral soil. The stoichiometric imbalances associated with phosphorus between microbial biomass and resources and the microbial community changes under N addition were correlated with microbial CUE and NUE. Further, N addition decreased microbial biomass turnover in organic soil but accelerated it in mineral soil. Altogether, our results indicated that N addition could control soil C and N cycling processes by affecting microbial elements use efficiencies (i.e. CUE and NUE), which may consequently impact C and N sequestration in this temperate forest soil.
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
大幅提高文件上传限制,最高150M (2024-4-1)

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
鱼鱼完成签到 ,获得积分10
16秒前
lyyzxx完成签到 ,获得积分10
22秒前
招水若离完成签到,获得积分10
39秒前
cookie完成签到,获得积分10
44秒前
lynn_zhang完成签到,获得积分10
52秒前
小饼饼完成签到 ,获得积分10
1分钟前
郭志晟完成签到 ,获得积分20
1分钟前
1分钟前
1分钟前
1分钟前
小蘑菇应助蔺涵柳采纳,获得10
3分钟前
olivia完成签到,获得积分10
3分钟前
3分钟前
喵总发布了新的文献求助10
3分钟前
wanci应助olivia采纳,获得10
3分钟前
坚强的广山完成签到,获得积分0
3分钟前
3分钟前
3分钟前
蔺涵柳发布了新的文献求助10
3分钟前
水牛发布了新的文献求助10
3分钟前
君华海逸完成签到,获得积分10
3分钟前
充电宝应助水牛采纳,获得10
3分钟前
鎏清畵应助花样年华采纳,获得10
4分钟前
4分钟前
cctv18应助olivia采纳,获得30
4分钟前
peakmon完成签到 ,获得积分10
5分钟前
5分钟前
olivia发布了新的文献求助10
5分钟前
6分钟前
喵总发布了新的文献求助10
6分钟前
6分钟前
SOLOMON应助科研通管家采纳,获得10
6分钟前
彩色莞完成签到 ,获得积分10
7分钟前
喵总发布了新的文献求助10
7分钟前
葛力完成签到,获得积分10
8分钟前
大小可爱完成签到,获得积分10
8分钟前
8分钟前
张XX给张XX的求助进行了留言
8分钟前
w1x2123完成签到,获得积分10
8分钟前
9分钟前
高分求助中
Manual of Clinical Microbiology, 4 Volume Set (ASM Books) 13th Edition 1000
Sport in der Antike 800
De arte gymnastica. The art of gymnastics 600
Berns Ziesemer - Maos deutscher Topagent: Wie China die Bundesrepublik eroberte 500
Stephen R. Mackinnon - Chen Hansheng: China’s Last Romantic Revolutionary (2023) 500
Sport in der Antike Hardcover – March 1, 2015 500
Psychological Warfare Operations at Lower Echelons in the Eighth Army, July 1952 – July 1953 400
热门求助领域 (近24小时)
化学 材料科学 医学 生物 有机化学 工程类 生物化学 纳米技术 物理 内科学 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 电极 光电子学 量子力学
热门帖子
关注 科研通微信公众号,转发送积分 2424734
求助须知:如何正确求助?哪些是违规求助? 2112393
关于积分的说明 5350390
捐赠科研通 1839964
什么是DOI,文献DOI怎么找? 915899
版权声明 561327
科研通“疑难数据库(出版商)”最低求助积分说明 489899