Reversal of trend of biomass burning in the Amazon
Reversal of trend of biomass burning in the Amazon
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DOI：
10.1029/2007gl031530
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发表时间：
2007-10-18
影响因子：
5.2
通讯作者：
Longo, Karla
中科院分区：
文献类型：
--
作者：
Koren, Ilan;Remer, Lorraine A.;Longo, Karla
我们使用MODIS气溶胶光学厚度和亚马逊盆地上空的AVHRR火数来确定南美洲大陆尺度上生物质燃烧的增加或减少。我们发现，季节平均光学厚度和火灾数据分别从2000年和1998年开始，一直持续到2005年，呈现出显著的持续增长趋势。然而，这一趋势在2006年发生了急剧逆转，导致总体趋势变得不那么显著。2006年生物质燃烧的急剧减少与2006年首次实施的三国政策转变有关。结果表明，人类活动对大范围环境的影响是多么显著。
We use MODIS aerosol optical depth and AVHRR fire counts over the Amazon Basin to determine whether biomass burning is increasing or decreasing over continental scales in South America. We find a significant sustained increasing trend in both the seasonal mean optical depth and fire data that begins in the year 2000 and 1998, respectively, and continues through 2005. However, there is a sharp reversal of this trend in 2006 that causes the overall trend to become less significant. The sharp decrease of biomass burning in 2006 is linked to a tri-national policy shift first implemented in 2006. The results show how significantly human activity can affect the large scale environment.