Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14750 |
Long-term nitrogen addition modifies microbial composition and functions for slow carbon cycling and increased sequestration in tropical forest soil | |
Tian, Jing1,2; Dungait, Jennifer A. J.3; Lu, Xiankai4,5; Yang, Yunfeng6; Hartley, Iain P.3; Zhang, Wei4,5; Mo, Jiangming4,5; Yu, Guirui2; Zhou, Jizhong6,7,8,9; Kuzyakov, Yakov10,11 | |
2019-08-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2019 |
卷号 | 25期号:10页码:3267-3281 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; England; USA; Germany |
英文摘要 | Nitrogen (N) deposition is a component of global change that has considerable impact on belowground carbon (C) dynamics. Plant growth stimulation and alterations of fungal community composition and functions are the main mechanisms driving soil C gains following N deposition in N-limited temperate forests. In N-rich tropical forests, however, N deposition generally has minor effects on plant growth; consequently, C storage in soil may strongly depend on the microbial processes that drive litter and soil organic matter decomposition. Here, we investigated how microbial functions in old-growth tropical forest soil responded to 13 years of N addition at four rates: 0 (Control), 50 (Low-N), 100 (Medium-N), and 150 (High-N) kg N ha(-1) year(-1). Soil organic carbon (SOC) content increased under High-N, corresponding to a 33% decrease in CO2 efflux, and reductions in relative abundances of bacteria as well as genes responsible for cellulose and chitin degradation. A 113% increase in N2O emission was positively correlated with soil acidification and an increase in the relative abundances of denitrification genes (narG and norB). Soil acidification induced by N addition decreased available P concentrations, and was associated with reductions in the relative abundance of phytase. The decreased relative abundance of bacteria and key functional gene groups for C degradation were related to slower SOC decomposition, indicating the key mechanisms driving SOC accumulation in the tropical forest soil subjected to High-N addition. However, changes in microbial functional groups associated with N and P cycling led to coincidentally large increases in N2O emissions, and exacerbated soil P deficiency. These two factors partially offset the perceived beneficial effects of N addition on SOC storage in tropical forest soils. These findings suggest a potential to incorporate microbial community and functions into Earth system models considering their effects on greenhouse gas emission, biogeochemical processes, and biodiversity of tropical ecosystems. |
英文关键词 | biogeochemical cycling C and N turnover global climate change microbial functional community N deposition tropical forest |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000479856800001 |
WOS关键词 | N DEPOSITION ; PHOSPHORUS LIMITATION ; COMMUNITY COMPOSITION ; GLOBAL CHANGE ; LAND-USE ; RESPONSES ; FUNGAL ; BACTERIAL ; BIOMASS ; DENITRIFICATION |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/185678 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.China Agr Univ, Minist Educ, Key Lab Plant Soil Interact, Coll Resources & Environm Sci,Natl Acad Agr Green, Beijing, Peoples R China; 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China; 3.Univ Exeter, Coll Life & Environm Sci, Geog, Exeter, Devon, England; 4.Chinese Acad Sci, South China Bot Garden, Key Lab Vegetat Restorat & Management Degraded Ec, Guangzhou 510650, Guangdong, Peoples R China; 5.Chinese Acad Sci, South China Bot Garden, Guangdong Prov Key Lab Appl Bot, Guangzhou 510650, Guangdong, Peoples R China; 6.Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing, Peoples R China; 7.Univ Oklahoma, Inst Environm Genom, Dept Microbiol & Plant Biol, Norman, OK 73019 USA; 8.Univ Oklahoma, Inst Environm Genom, Sch Civil Engn & Environm Sci, Norman, OK 73019 USA; 9.Lawrence Berkeley Natl Lab, Earth & Environm Sci, Berkeley, CA USA; 10.Univ Gottingen, Dept Soil Sci Temperate Ecosyst, Gottingen, Germany; 11.Cent South Univ Forestry & Technol, Fac Life Sci & Technol, Changsha, Hunan, Peoples R China |
推荐引用方式 GB/T 7714 | Tian, Jing,Dungait, Jennifer A. J.,Lu, Xiankai,et al. Long-term nitrogen addition modifies microbial composition and functions for slow carbon cycling and increased sequestration in tropical forest soil[J]. GLOBAL CHANGE BIOLOGY,2019,25(10):3267-3281. |
APA | Tian, Jing.,Dungait, Jennifer A. J..,Lu, Xiankai.,Yang, Yunfeng.,Hartley, Iain P..,...&Kuzyakov, Yakov.(2019).Long-term nitrogen addition modifies microbial composition and functions for slow carbon cycling and increased sequestration in tropical forest soil.GLOBAL CHANGE BIOLOGY,25(10),3267-3281. |
MLA | Tian, Jing,et al."Long-term nitrogen addition modifies microbial composition and functions for slow carbon cycling and increased sequestration in tropical forest soil".GLOBAL CHANGE BIOLOGY 25.10(2019):3267-3281. |
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