期刊
NATURE CLIMATE CHANGE
卷 7, 期 6, 页码 428-+出版社
NATURE PORTFOLIO
DOI: 10.1038/NCLIMATE3280
关键词
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资金
- DIKTI Scholarship [4115/E4.4/K/2013]
- Royal Netherlands Academy of Arts and Sciences (KNAW) [SPIN-JRP-29]
- USAID grant through SWAMP
- NERC [NE/P014801/1] Funding Source: UKRI
Borneo's diverse ecosystems, which are typical humid tropical conditions, are deteriorating rapidly, as the area is experiencing recurrent large-scale wildfires, affecting atmospheric composition(1-4) and influencing regional climate processes(5,6). Studies suggest that climate-driven drought regulates wildfires(2,7-9), but these overlook subsurface processes leading to hydrological drought, an important driver. Here, we show that models which include hydrological processes better predict area burnt than those solely based on climate data. We report that the Borneo landscape(10) has experienced a substantial hydrological drying trend since the early twentieth century, leading to progressive tree mortality, more severe than in other tropical regions(11). This has caused massive wildfires in lowland Borneo during the past two decades, which we show are clustered in years with large areas of hydrological drought coinciding with strong El Nino events. Statistical modelling evidence shows amplifying wildfires and greater area burnt in response to El Nino/Southern Oscillation (ENSO) strength, when hydrology is considered. These results highlight the importance of considering hydrological drought for wildfire prediction, and we recommend that hydrology should be considered in future studies of the impact of projected ENSO strength, including effects on tropical ecosystems, and biodiversity conservation.
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