DOI: 10.1111/gcb.12973
论文题名: The importance of considering animal body mass in IPCC greenhouse inventories and the underappreciated role of wild herbivores
作者: Smith F.A. ; Lyons S.K. ; Wagner P.J. ; Elliott S.M.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 10 起始页码: 3880
结束页码: 3888
语种: 英语
英文关键词: Allometry
; Enteric emissions
; IPCC Tier 1
; IPCC Tier 2
; Megaherbivores
; Methane
; Wild mammals
Scopus关键词: allometry
; body mass
; emission inventory
; greenhouse gas
; herbivore
; mammal
; methane
; wild population
; Animalia
; Mammalia
; air pollutant
; methane
; air pollutant
; analysis
; animal
; body weight
; environmental monitoring
; greenhouse effect
; herbivory
; mammal
; physiology
; theoretical model
; Air Pollutants
; Animals
; Body Weight
; Environmental Monitoring
; Greenhouse Effect
; Herbivory
; Mammals
; Methane
; Models, Theoretical
英文摘要: Methane is an important greenhouse gas, but characterizing production by source sector has proven difficult. Current estimates suggest herbivores produce ~20% (~76-189 Tg yr-1) of methane globally, with wildlife contributions uncertain. We develop a simple and accurate method to estimate methane emissions and reevaluate production by wildlife. We find a strikingly robust relationship between body mass and methane output exceeding the scaling expected by differences in metabolic rate. Our allometric model gives a significantly better fit to empirical data than IPCC Tier 1 and 2 calculations. Our analysis suggests that (i) the allometric model provides an easier and more robust estimate of methane production than IPCC models currently in use; (ii) output from wildlife is much higher than previously considered; and (iii) because of the allometric scaling of methane output with body mass, national emissions could be reduced if countries favored more, smaller livestock, over fewer, larger ones. © 2015 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61851
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Biology, University of New Mexico, Albuquerque, NM, United States; Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, DC, United States; Climate, Ocean, Sea Ice Modeling (COSIM), Los Alamos National Laboratory, Los Alamos, NM, United States
Recommended Citation:
Smith F.A.,Lyons S.K.,Wagner P.J.,et al. The importance of considering animal body mass in IPCC greenhouse inventories and the underappreciated role of wild herbivores[J]. Global Change Biology,2015-01-01,21(10)