DOI: 10.1002/2015GB005167
Scopus记录号: 2-s2.0-84975775529
论文题名: Long-term P weathering and recent N deposition control contemporary plant-soil C, N, and P
作者: Davies J ; A ; C ; , Tipping E ; , Rowe E ; C ; , Boyle J ; F ; , Graf Pannatier E ; , Martinsen V
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2016
卷: 30, 期: 2 起始页码: 231
结束页码: 249
语种: 英语
英文关键词: carbon
; modeling
; nitrogen
; nutrient cycling
; phosphorus
; weathering
Scopus关键词: atmospheric deposition
; carbon cycle
; environmental modeling
; Holocene
; long-term change
; nitrogen compound
; nitrogen cycle
; nitrogen fixation
; Northern Hemisphere
; nutrient cycling
; phosphorus cycle
; soil-vegetation interaction
; testing method
; weathering
; Europe
英文摘要: Models are needed to understand how plant-soil nutrient stores and fluxes have responded to the last two centuries of widespread anthropogenic nutrient pollution and predict future change. These models need to integrate across carbon, nitrogen, and phosphorus (C, N, and P) cycles and simulate changes over suitable timescales using available driving data. It is also vital that they are constrainable against observed data to provide confidence in their outputs. To date, no models address all of these requirements. To meet this need, a new model, N14CP, is introduced, which is initially applied to Northern Hemisphere temperate and boreal ecosystems over the Holocene. N14CP is parameterized and tested using 88 northern Europe plot-scale studies, providing the most robust test of such a model to date. The model simulates long-term P weathering, based on the assumption of a starting pool of weatherable P (Pweath0, g m-2), which is gradually transformed into organic and sorbed pools. Nitrogen fixation (and consequently primary production) is made dependent on available P. In the absence of knowledge about the spatial variability of Pweath0, N14CP produces good average soil and plant variables but cannot simulate variations among sites. Allowing Pweath0 to vary between sites improves soil C, N, and P results greatly, suggesting that contemporary soil C, N, and P are sensitive to long-term P weathering. Most sites were found to be N limited. Anthropogenic N deposition since 1800 was calculated to have increased plant biomass substantially, in agreement with observations and consequently increased soil carbon pools. ©2016. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77890
Appears in Collections: 气候变化事实与影响
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作者单位: Lancaster Environment Centre, University of Lancaster, Lancaster, United Kingdom; Centre for Ecology and Hydrology, Lancaster, United Kingdom; Centre for Ecology and Hydrology, Bangor, United Kingdom; Department of Geography and Planning, University of Liverpool, Liverpool, United Kingdom; Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, Switzerland; Norges Miljø- Og Biovitenskaplige Universitet, Ås, Norway
Recommended Citation:
Davies J,A,C,et al. Long-term P weathering and recent N deposition control contemporary plant-soil C, N, and P[J]. Global Biogeochemical Cycles,2016-01-01,30(2)