Climatic variability and vegetation vulnerability in Amazonia

被引：87

作者：

Hutyra, LR

Munger, JW

Nobre, CA

Saleska, SR

Vieira, SA

Wofsy, SC

机构：

[1] Harvard Univ, Dept Earth & Planetary Sci, Cambridge, MA 02138 USA

[2] Harvard Univ, Div Engn & Appl Sci, Cambridge, MA 02138 USA

[3] Inst Nacl Pesquisas Espaciais, Ctr Previsao Tempo & Estudos Climat, BR-12630000 Cachoeira Paulista, SP, Brazil

[4] Univ Arizona, Tucson, AZ 85721 USA

[5] Univ Sao Paulo, CENA, Lab Ecol Isotop, BR-13400970 Piracicaba, SP, Brazil

来源：

GEOPHYSICAL RESEARCH LETTERS | 2005年 / 32卷 / 24期

关键词：

D O I：

10.1029/2005GL024981

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Models of climate change predict close coupling between increases in aridity and conversion of Amazonian forests to savanna. Here we assess the vulnerability and resilience of Amazonian vegetation to climate change by analyzing observed climate-vegetation relationships using climate data, observed vegetation distributions, and evapotranspiration rates inferred from eddy flux data. We found that drought frequency is an excellent predictor of the forest-savanna boundary, indicating the key role of extreme climatic events for inducing vegetation change, and highlighting particularly vulnerable regions of Amazonia.

引用

页码：1 / 4

页数：4

共 41 条

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