DOI: 10.1002/2013GL058857
论文题名: Agricultural conversion without external water and nutrient inputs reduces terrestrial vegetation productivity
作者: Smith W.K. ; Cleveland C.C. ; Reed S.C. ; Running S.W.
刊名: Geophysical Research Letters
ISSN: 0094-10470
EISSN: 1944-10201
出版年: 2014
卷: 41, 期: 2 起始页码: 449
结束页码: 455
语种: 英语
英文关键词: agriculture
; bioenergy
; carbon cycle
; food production
; net primary production
; NPP
Scopus关键词: Agriculture
; Ecosystems
; Forestry
; Productivity
; Bio-energy
; Carbon cycles
; Food production
; Net primary production
; NPP
; Vegetation
; bioenergy
; carbon cycle
; food production
; growth rate
; natural resource
; net primary production
; savanna
; trade-off
; tropical forest
; Agriculture
; Ecosystems
; Forestry
; Plants
; Productivity
英文摘要: Driven by global population and standard of living increases, humanity co-opts a growing share of the planet's natural resources resulting in many well-known environmental trade-offs. In this study, we explored the impact of agriculture on a resource fundamental to life on Earth: terrestrial vegetation growth (net primary production; NPP). We demonstrate that agricultural conversion has reduced terrestrial NPP by ∼7.0%. Increases in NPP due to agricultural conversion were observed only in areas receiving external inputs (i.e., irrigation and/or fertilization). NPP reductions were found for ∼88% of agricultural lands, with the largest reductions observed in areas formerly occupied by tropical forests and savannas (∼71% and ∼66% reductions, respectively). Without policies that explicitly consider the impact of agricultural conversion on primary production, future demand-driven increases in agricultural output will likely continue to drive net declines in global terrestrial productivity, with potential detrimental consequences for net ecosystem carbon storage and subsequent climate warming. ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84892424186&doi=10.1002%2f2013GL058857&partnerID=40&md5=c5b7127aec656865fdda36c1423e6f11
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7734
Appears in Collections: 气候减缓与适应
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作者单位: Numerical Terradynamic Simulation Group, Department of Ecosystem and Conservation Sciences, University of Montana, Missoula, MT, United States
Recommended Citation:
Smith W.K.,Cleveland C.C.,Reed S.C.,et al. Agricultural conversion without external water and nutrient inputs reduces terrestrial vegetation productivity[J]. Geophysical Research Letters,2014-01-01,41(2).