DOI: 10.1111/gcb.12561
论文题名: Do grasslands act as a perpetual sink for carbon?
作者: Smith P.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2014
卷: 20, 期: 9 起始页码: 2708
结束页码: 2711
语种: 英语
英文关键词: Carbon
; Flux
; Grassland
; Sequestration
; Sink
; Soil
; Stock
Scopus关键词: carbon flux
; carbon sequestration
; carbon sink
; grassland
; land management
; land use
; mass balance
; soil survey
; terrestrial ecosystem
; soil
; biological model
; carbon sequestration
; chemistry
; environmental protection
; grassland
; physiology
; procedures
; soil
; statistics and numerical data
; Carbon Sequestration
; Conservation of Natural Resources
; Grassland
; Models, Biological
; Soil
英文摘要: It is increasingly commonly suggested that grasslands are a perpetual sink for carbon, and that just maintaining grasslands will yield a net carbon sink. I examine the evidence for this from repeated soil surveys, long term grassland experiments and simple mass balance calculations. I conclude that it is untenable that grasslands act as a perpetual carbon sink, and the most likely explanation for observed grassland carbon sinks over short periods is legacy effects of land use and land management prior to the beginning of flux measurement periods. Simply having grassland does not result is a carbon sink, but judicious management or previously poorly managed grasslands can increase the sink capacity. Given that grasslands are a large store of carbon, and that it is easier and faster for soils to lose carbon that it is for them to gain carbon, it is an important management target to maintain these stocks. © 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/62028
Appears in Collections: 影响、适应和脆弱性
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作者单位: Institute of Biological and Environmental Sciences, ClimateXChange and Scottish Food Security Alliance-Crops, University of Aberdeen, 23 St Machar Drive, Aberdeen, AB24 3UU, United Kingdom
Recommended Citation:
Smith P.. Do grasslands act as a perpetual sink for carbon?[J]. Global Change Biology,2014-01-01,20(9)