Fire Responses to the 2010 and 2015/2016 Amazonian Droughts

Fire Responses to the 2010 and 2015/2016 Amazonian Droughts
复制标题

2010 年和 2015/2016 年亚马逊干旱的火灾应对措施

DOI:
--
复制
发表时间:
2019
影响因子:
2.9
通讯作者:
L. Aragão
L. Aragão
中科院分区:
地球科学3区
文献类型:
--
作者:
Celso H. L. Silva Junior;L. Anderson;A. L. Silva;C. T. Almeida;Ricardo Dalagnol;M. A. J. S. Pletsch;Thales V Penha;Rennan A. Paloschi;L. Aragão

文献摘要

参考文献

被引文献

相似文献

亚马逊河流域的极端干旱导致火灾发生率异常增加,破坏了环境、社会和经济系统的稳定。因此,了解干旱如何影响该地区的火灾模式对于预测和规划可能影响的补救行动至关重要。我们专注于巴西亚马逊生物群落,使用遥感数据调查了2010年和2015/2016年亚马逊干旱的火灾反应。我们的研究结果显示,2015/2016年干旱的强度和范围超过了2010年干旱。在2010年干旱期间,我们发现最大面积为846,800平方公里(占巴西亚马逊生物群落的24%),前三个月的降雨量显著减少(p<0.05),而在2015/2016年期间,最大面积在2016年最后三个月达到1,702,800平方公里(占巴西亚马逊生物群落的47%)。另一方面,2010年干旱的最大面积为84.04万平方公里,(巴西亚马逊生物群落的23%)在前三个月的地表温度显著增加(p<0.05),而在2015/2016年干旱期间,2015年最后三个月的最大面积为2,188,800平方公里(巴西亚马逊生物群落的61%)。与2010年干旱不同,在2015/2016年干旱期间,主要在2015年10月至2016年3月的雨季期间发生了活跃火灾和二氧化碳排放的显著正异常。在2010年干旱期间,由于被烧毁的森林、非森林植被和生产性土地的同时增加,导致了积极的火灾异常。然而,在2015/2016年干旱期间,这一增长主要是由烧毁的森林造成的。两次分析的干旱共排放了475 Tg CO2,其中2010年为233 Tg CO2,2015年为147 Tg CO2,2016年为95 Tg CO2,分别占209%,136%,到2020年,巴西减少森林砍伐碳排放的国家目标的82%(1996-2005年平均毁林量为1288 Tg CO2,即每年0.11 Pg CO2)。最后,我们预计,在干旱期间火灾的增加,这里显示可能会加剧,并可能成为更频繁地在亚马逊河流域由于气候变化的变化,如果没有火的使用条例的实施。
Extreme droughts in Amazonia cause anomalous increase in fire occurrence, disrupting the stability of environmental, social and economic systems. Thus, understanding how droughts affect fire patterns in this region is essential for anticipating and planning actions for remediation of possible impacts. Focused on the Brazilian Amazon biome, we investigated fire responses to the 2010 and 2015/2016 Amazonian droughts using a remote sensing data. Our results revealed that the 2015/2016 drought surpassed the 2010 drought in intensity and extent. During the 2010 drought, we found a maximum area of 846,800 km2 (24% of the Brazilian Amazon biome) with significant (p<0.05) rainfall decrease in the first trimester, while during the 2015/2016 the maximum area reached 1,702,800 km2 (47% of the Brazilian Amazon biome) in the last trimester of 2016. On the other hand, the 2010 drought had a maximum area of 840,400 km2 (23% of the Brazilian Amazon biome) with significant (p<0.05) land surface temperature increase in the first trimester, while during the 2015/2016 drought the maximum area was 2,188,800 km2 (61% of the Brazilian Amazon biome) in the last trimester of 2015. Unlike the 2010 drought, during the 2015/2016 drought, significant positive anomalies of active fire and CO2 emissions occurred mainly during the wet season, between October 2015 and March 2016. During the 2010 drought positive active fire anomalies resulted from the simultaneous increase of burned forest, non-forest vegetation and productive lands. During the 2015/2016 drought, however, this increase was dominated by burned forests. The two analysed droughts emitted together 475 Tg CO2, with 233 Tg CO2 in 2010, 147 Tg CO2 in 2015 and 95 Tg CO2 in 2016, which represented respectively 209%, 136%, 82% of the Brazil’s national targets for reducing carbon emissions from deforestation by 2020 (1288 Tg CO2 from 1996-2005 average deforestation or a rate of 0.11 Pg CO2 year-1). Finally, we anticipate that the increase of fires during the droughts showed here may intensify and can become more frequent in Amazonia due to changes in climatic variability if no regulations on fire use are implemented.
DOI: 10.1111/j.1469-8137.2010.03355.x
发表时间: 2010-01-01
期刊: NEW PHYTOLOGIST
影响因子: 9.4
作者:
Anderson, Liana O.;Malhi, Yadvinder;Phillips, Oliver
通讯作者: Phillips, Oliver
基于实地和卫星观测的亚马逊流域生物群落规模森林属性
DOI: 10.3390/rs4051245
发表时间: 2012
期刊: Remote Sensing
影响因子: 5
作者:
Anderson L
通讯作者: Anderson L
DOI: 10.1029/2006gl028946
发表时间: 2007-04-03
影响因子: 5.2
作者:
Aragao, Luiz Eduardo O. C.;Malhi, Yadvinder;Shimabukuro, Yosio Edemir
通讯作者: Shimabukuro, Yosio Edemir