DOI: 10.1007/s10533-016-0277-6
Scopus记录号: 2-s2.0-84997501304
论文题名: Season, but not experimental warming, affects the activity and temperature sensitivity of extracellular enzymes
作者: Machmuller M.B. ; Mohan J.E. ; Minucci J.M. ; Phillips C.A. ; Wurzburger N.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2016
卷: 131, 期: 3 起始页码: 255
结束页码: 265
语种: 英语
英文关键词: Decomposition
; Experimental warming
; Extracellular enzymes
; Temperature sensitivity
Scopus关键词: enzyme activity
; experimental study
; microbial activity
; phosphorus
; season
; seasonal variation
; soil moisture
; soil nitrogen
; soil organic matter
; soil temperature
; Georgia
; United States
英文摘要: Climate change may affect the microbial production and temperature sensitivity of extracellular enzymes that release carbon (C) and nutrients from soil organic matter. We measured the response of six hydrolytic enzymes involved in C, nitrogen (N), and phosphorus (P) degradation to experimental warming in a mixed-deciduous forest persisting on highly-weathered Ultisols (Whitehall Forest, Georgia, US). We found that warming produced no consistent enzyme response. However, we observed significant seasonal variation in enzyme activities, temperature sensitivities and elemental enzyme ratios (C:N and C:P). Seasonal differences in enzyme activity and temperature sensitivity were best explained by soil moisture and temperature. Our results suggest that seasonal dynamics in soil microclimate, organic matter supply, and microbial demand exert more control on enzyme dynamics than does a uniform increase in soil temperature. © 2016, Springer International Publishing Switzerland. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83339
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: Odum School of Ecology, University of Georgia, 140 East Green Street, Athens, GA, United States; Natural Resource Ecology Laboratory, Colorado State University, 1499 Campus Delivery, Fort Collins, CO, United States
Recommended Citation:
Machmuller M.B.,Mohan J.E.,Minucci J.M.,et al. Season, but not experimental warming, affects the activity and temperature sensitivity of extracellular enzymes[J]. Biogeochemistry,2016-01-01,131(3)