DOI: 10.1111/gcb.12831
论文题名: Convergent ecosystem responses to 23-year ambient and manipulated warming link advancing snowmelt and shrub encroachment to transient and long-term climate-soil carbon feedback
作者: Harte J. ; Saleska S.R. ; Levy C.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 6 起始页码: 2349
结束页码: 2356
语种: 英语
英文关键词: Climate change
; Ecosystem-climate feedback
; Long-term observation
; Shrub encroachment
; Snowmelt
; Soil carbon model
; Vegetation
; Warming experiment
Scopus关键词: climate change
; climate feedback
; community composition
; ecosystem response
; shrub
; snowmelt
; soil carbon
; vegetation structure
; carbon
; snow
; soil
; biomass
; carbon cycle
; chemistry
; climate change
; ecosystem
; plant
; season
; soil
; temperature
; Biomass
; Carbon
; Carbon Cycle
; Climate Change
; Ecosystem
; Plants
; Seasons
; Snow
; Soil
; Temperature
英文摘要: Ecosystem responses to climate change can exert positive or negative feedbacks on climate, mediated in part by slow-moving factors such as shifts in vegetation community composition. Long-term experimental manipulations can be used to examine such ecosystem responses, but they also present another opportunity: inferring the extent to which contemporary climate change is responsible for slow changes in ecosystems under ambient conditions. Here, using 23 years of data, we document a shift from nonwoody to woody vegetation and a loss of soil carbon in ambient plots and show that these changes track previously shown similar but faster changes under experimental warming. This allows us to infer that climate change is the cause of the observed shifts in ambient vegetation and soil carbon and that the vegetation responses mediate the observed changes in soil carbon. Our findings demonstrate the realism of an experimental manipulation, allow attribution of a climate cause to observed ambient ecosystem changes, and demonstrate how a combination of long-term study of ambient and experimental responses to warming can identify mechanistic drivers needed for realistic predictions of the conditions under which ecosystems are likely to become carbon sources or sinks over varying timescales. © 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/61610
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Energy and Resources Group, University of California, Berkeley, CA, United States; Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ, United States; Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, United States
Recommended Citation:
Harte J.,Saleska S.R.,Levy C.. Convergent ecosystem responses to 23-year ambient and manipulated warming link advancing snowmelt and shrub encroachment to transient and long-term climate-soil carbon feedback[J]. Global Change Biology,2015-01-01,21(6)