DOI: 10.1111/gcb.14010
Scopus记录号: 2-s2.0-85040176865
论文题名: Responses of terrestrial nitrogen pools and dynamics to different patterns of freeze-thaw cycle: A meta-analysis
作者: Gao D. ; Zhang L. ; Liu J. ; Peng B. ; Fan Z. ; Dai W. ; Jiang P. ; Bai E.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期: 6 起始页码: 2377
结束页码: 2389
语种: 英语
英文关键词: denitrification
; freeze-thaw cycle
; microbial biomass
; mineralization
; N fluxes
; N2O
; nitrification
Scopus关键词: biomass
; climate change
; denitrification
; ecosystem response
; freeze-thaw cycle
; global change
; microbial activity
; mineralization
; nitrification
; nitrogen cycle
; soil nitrogen
; terrestrial ecosystem
英文摘要: Altered freeze-thaw cycle (FTC) patterns due to global climate change may affect nitrogen (N) cycling in terrestrial ecosystems. However, the general responses of soil N pools and fluxes to different FTC patterns are still poorly understood. Here, we compiled data of 1519 observations from 63 studies and conducted a meta-analysis of the responses of 17 variables involved in terrestrial N pools and fluxes to FTC. Results showed that under FTC treatment, soil NH4 +, NO3 −, NO3 − leaching, and N2O emission significantly increased by 18.5%, 18.3%, 66.9%, and 144.9%, respectively; and soil total N (TN) and microbial biomass N (MBN) significantly decreased by 26.2% and 4.7%, respectively; while net N mineralization or nitrification rates did not change. Temperate and cropland ecosystems with relatively high soil nutrient contents were more responsive to FTC than alpine and arctic tundra ecosystems with rapid microbial acclimation. Therefore, altered FTC patterns (such as increased duration of FTC, temperature of freeze, amplitude of freeze, and frequency of FTC) due to global climate warming would enhance the release of inorganic N and the losses of N via leaching and N2O emissions. Results of this meta-analysis help better understand the responses of N cycling to FTC and the relationships between FTC patterns and N pools and N fluxes. © 2017 John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110376
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Shenyang, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China; Forest Ecology – Stable Isotope Research Center, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China; School of Geographical Sciences, Northeast Normal University, Changchun, China
Recommended Citation:
Gao D.,Zhang L.,Liu J.,et al. Responses of terrestrial nitrogen pools and dynamics to different patterns of freeze-thaw cycle: A meta-analysis[J]. Global Change Biology,2018-01-01,24(6)