气候变化领域集成服务门户(CCPortal): Forest degradation promotes fire during drought in moist tropical forests of Ghana

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DOI	10.1016/j.foreco.2019.03.014
	Forest degradation promotes fire during drought in moist tropical forests of Ghana
	Dwomoh F.K.; Wimberly M.C.; Cochrane M.A.; Numata I.
发表日期	2019
ISSN	0378-1127
起始页码	158
结束页码	168
卷号	440
英文摘要	Forest reserves in Ghana are the only significant refugia of natural tropical forests, but they are threatened by land use pressures that have led to widespread forest degradation. Additional stress from climate perturbations, such as droughts, can reduce fuel moisture and lead to fires that render the reserves more vulnerable to further degradation. Here, we explore recent drought-associated wildfires in the forest zone of Ghana to better understand the combined effects of forest degradation and drought stress on fire in the forest reserves. We used remotely sensed Earth observations from MODIS and Landsat 8 along with Climate Hazards Group Infrared Precipitation with Stations (CHIRPS) precipitation data, to study fires that occurred during drought conditions in 2016. Fires were widespread in 2016, with an estimated 2137 km 2 of forest reserve area burned. During the period 2003–2017, forest reserves experienced the most active fire detections in 2016. The majority of these fires were located in the moist semi-deciduous forests, the largest and most economically valuable forest type, accounting for more than 50% of all active fires and burned area. Forest reserves within the moist semi-deciduous forest type also had the highest standardized fire anomalies in 2016. There was a higher percentage of burned area in degraded forest reserves than in more intact reserves. These results underscore the vulnerability of Ghana's forest reserves, particularly in the moist semi-deciduous type, to fires during severe droughts. Although drought predisposes moist tropical forests to fire, forest degradation also influences the spatial pattern and extent of burned forests. Fire-induced forest degradation presents a major challenge for conservation of humid tropical forests in the region. Within the context of REDD+ and other climate change mitigation and adaptation programs in West Africa, it will be imperative to incorporate effective fire management strategies into ongoing efforts to reduce forest degradation and sustain forest resilience. © 2019 Elsevier B.V.
英文关键词	Drought; Forest conservation; Forest degradation; Forest reserves; Landsat; MODIS; REDD+; Remote sensing; Upper Guinean forest; West Africa
语种	英语
scopus关键词	Climate change; Conservation; Drought; Fires; Land use; Radiometers; Remote sensing; Tropics; Forest conservation; Forest degradation; Forest reserves; LANDSAT; MODIS; REDD; Upper Guinean forest; West Africa; Forestry; adaptive management; climate change; deciduous forest; drought; drought stress; emission inventory; environmental degradation; fire; forest ecosystem; habitat fragmentation; land use change; Landsat; MODIS; nature conservation; nature reserve; precipitation assessment; refugium; remote sensing; tropical forest; vulnerability; wildfire; Conservation; Drought; Fires; Land Use; Remote Sensing; Tropics; Ghana; Guinea
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156065
作者单位	Department of Geography & Environmental Sustainability, University of Oklahoma, Norman, OK 73019, United States; Appalachian Laboratory, University of Maryland Center for Environmental Science (UMCES), Frostburg, MD 21532, United States; Geospatial Sciences Center of Excellence, South Dakota State University, Brookings, SD 57007, United States
推荐引用方式 GB/T 7714	Dwomoh F.K.,Wimberly M.C.,Cochrane M.A.,et al. Forest degradation promotes fire during drought in moist tropical forests of Ghana[J],2019,440.
APA	Dwomoh F.K.,Wimberly M.C.,Cochrane M.A.,&Numata I..(2019).Forest degradation promotes fire during drought in moist tropical forests of Ghana.Forest Ecology and Management,440.
MLA	Dwomoh F.K.,et al."Forest degradation promotes fire during drought in moist tropical forests of Ghana".Forest Ecology and Management 440(2019).