DOI: 10.1111/gcb.12555
论文题名: Different types of nitrogen deposition show variable effects on the soil carbon cycle process of temperate forests
作者: Du Y. ; Guo P. ; Liu J. ; Wang C. ; Yang N. ; Jiao Z.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2014
卷: 20, 期: 10 起始页码: 3222
结束页码: 3228
语种: 英语
英文关键词: Carbon cycle
; Enzymatic activity
; Forest soil
; Inorganic nitrogen
; Litter decomposition
; Nitrogen deposition
; Organic nitrogen
; Soil respiration
Scopus关键词: carbon cycle
; carbon sequestration
; deposition
; enzyme activity
; forest soil
; inorganic nitrogen
; organic nitrogen
; soil carbon
; soil respiration
; temperate forest
; ammonium nitrate
; carbon
; enzyme
; glycine
; nitric acid derivative
; nitrogen
; soil
; urea
; carbon cycle
; chemistry
; China
; forest
; isolation and purification
; soil
; Carbon
; Carbon Cycle
; China
; Enzymes
; Forests
; Glycine
; Nitrates
; Nitrogen
; Soil
; Urea
英文摘要: Nitrogen (N) deposition significantly affects the soil carbon (C) cycle process of forests. However, the influence of different types of N on it still remained unclear. In this work, ammonium nitrate was selected as an inorganic N (IN) source, while urea and glycine were chosen as organic N (ON) sources. Different ratios of IN to ON (1: 4, 2: 3, 3: 2, 4: 1, and 5: 0) were mixed with equal total amounts and then used to fertilize temperate forest soils for 2 years. Results showed that IN deposition inhibited soil C cycle processes, such as soil respiration, soil organic C decomposition, and enzymatic activities, and induced the accumulation of recalcitrant organic C. By contrast, ON deposition promoted these processes. Addition of ON also resulted in accelerated transformation of recalcitrant compounds into labile compounds and increased CO2 efflux. Meanwhile, greater ON deposition may convert C sequestration in forest soils into C source. These results indicated the importance of the IN to ON ratio in controlling the soil C cycle, which can consequently change the ecological effect of N deposition. © 2014 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62066
Appears in Collections: 影响、适应和脆弱性
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作者单位: Hebei College of Industry and Technology, Hongqi Street 626, Shijiazhuang, China
Recommended Citation:
Du Y.,Guo P.,Liu J.,et al. Different types of nitrogen deposition show variable effects on the soil carbon cycle process of temperate forests[J]. Global Change Biology,2014-01-01,20(10)