Fire patterns in north-eastern Argentina: influences of climate and land use/cover

被引:11
作者
Di Bella, Carlos M. [1 ,2 ]
Fischer, Maria A. [1 ]
Jobbagy, Esteban G. [2 ,3 ]
机构
[1] CIRN INTA, Inst Clima & Agua, Buenos Aires, DF, Argentina
[2] Consejo Nacl Invest Cient & Tecn, RA-1033 Buenos Aires, DF, Argentina
[3] Univ Nacl San Luis, Grp Estudios Ambient IMASL, San Luis, Argentina
基金
美国国家科学基金会;
关键词
IDENTIFICATION;
D O I
10.1080/01431161.2010.494167
中图分类号
TP7 [遥感技术];
学科分类号
081102 ; 0816 ; 081602 ; 083002 ; 1404 ;
摘要
Fires are one of the most frequent disturbances on terrestrial ecosystems, thus making their understanding and prediction crucial for their management. While the fuels condition are linked to well-known environmental factors, the ignition triggering agents are less understood and may display a more stochastic behaviour. We studied the regional relationship between the fire density and frequency, climate and land use/cover in the north-east region of Argentina using Moderate Resolution Imaging Spectroradiometer (MODIS) hotspots data, daily weather reports and land use/cover data at national level. The pre-fire water availability index showed a significantly negative relationship with hotspot densities (r(2) = 0.51, p < 0.01). The uncultivated land coverage, mainly represented by natural grasslands, was positively associated with the fire density (for Entre Rios, r(2) = 0.74, p < 0.0001 and for Corrientes, r(2) = 0.67, p < 0.0001). The results highlight the potential of remote sensing for fire monitoring in this region and its value in urgently needed policies for fire control and management.
引用
收藏
页码:4961 / 4971
页数:11
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