DOI: 10.1002/grl.50570
论文题名: Deforestation causes different subregional effects on the Amazon bioclimatic equilibrium
作者: Pires G.F. ; Costa M.H.
刊名: Geophysical Research Letters
ISSN: 0094-8784
EISSN: 1944-8515
出版年: 2013
卷: 40, 期: 14 起始页码: 3618
结束页码: 3623
语种: 英语
英文关键词: Amazon deforestation
; Amazon equilibrium
; Cerrado deforestation
; Climate Change
; Sub-regional climate
Scopus关键词: Amazon deforestation
; Bioclimatic envelopes
; Central brazils
; Cerrado
; Geographic variation
; Rate of reduction
; Regional climate
; Sub-regional climate
; Climate change
; Deforestation
; abamectin
; bioclimatology
; climate change
; deforestation
; nature-society relations
; precipitation (climatology)
; regional climate
; savanna
; threshold
; Climates
; Deforestation
; Amazonas [Brazil]
; Brazil
英文摘要: Deforestation on Amazonia and central Brazil Cerrado could change regional climate, possibly shifting forest equilibrium into a bioclimatic envelope typical of savannas. Although impacts of climate change induced by deforestation are likely to vary subregionally, the potential geographic variation of these effects and the thresholds of rainforest and Cerrado removal that will affect Amazonian bioclimatic equilibrium remain unknown. We evaluate the effects of deforestation scenarios of increasing severity on the bioclimatic equilibrium of Amazon subregions. Results indicate that subregional precipitation responds in three distinct ways to progressive deforestation: a near-constant rate of reduction, a rapid drop for low deforestation levels, and a decrease after intermediate deforestation levels. Additionally, while inner forest regions remain inside rainforest bioclimatic envelope, outer forest regions may cross forest-savanna bioclimatic threshold even at low deforestation levels. We argue that at least 90% of Amazonia and 40% of Cerrado should be sustained to avoid subregional bioclimatic savannization. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880242744&doi=10.1002%2fgrl.50570&partnerID=40&md5=86120268c9bf1cf579d0178f64875358
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6048
Appears in Collections: 气候减缓与适应
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作者单位: Department of Agricultural Engineering, Federal University of Viçosa, Av. P. H. Rolfs, s/n, Viçosa, MG, 36570-000, Brazil
Recommended Citation:
Pires G.F.,Costa M.H.. Deforestation causes different subregional effects on the Amazon bioclimatic equilibrium[J]. Geophysical Research Letters,2013-01-01,40(14).