DOI: 10.1016/j.foreco.2014.10.032
Scopus记录号: 2-s2.0-84911164262
论文题名: Understanding fire patterns and fire drivers for setting a sustainable management policy of the New-Caledonian biodiversity hotspot
作者: Curt T. ; Borgniet L. ; Ibanez T. ; Moron V. ; Hély C.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 337 起始页码: 48
结束页码: 60
语种: 英语
英文关键词: Biodiversity conservation
; Fire hazard
; Maquis
; New Caledonia
; Rainforest
; Savanna
Scopus关键词: Biodiversity
; Biohazards
; Climate change
; Conservation
; Drought
; Ecology
; Ecosystems
; Fire hazards
; Forestry
; Vegetation
; Biodiversity conservation
; Maquis
; New Caledonia
; Rainforest
; Savanna
; Fires
; biodiversity
; climate change
; database
; El Nino
; fire management
; forest fire
; human activity
; Landsat
; MODIS
; policy strategy
; rainforest
; regression analysis
; savanna
; sustainability
; Biodiversity
; Conservation
; Ecosystems
; Management
; New Caledonia [Melanesia]
英文摘要: New Caledonia (NC) is a biodiversity hotspot sheltering terrestrial ecosystems of high ecological and conservation value including tropical dry forests, rainforests, and maquis. However, uncontrolled bushfires threaten this exceptional biodiversity. A science-based fire management policy could reduce the impact of unwanted fires and help facing climate change. However, to date, data on the location, extent, causal factors and spatial patterns of fires had not been collected. We compiled a 13-year-long (1999-2011) spatially-explicit fire database for NC using MODIS and Landsat data. Using boosted regression trees we disentangled the role of anthropogenic factors, physiography, weather and vegetation on fire activity. We also characterized the location of fires and the vegetation composition at the fire edges, in order to determine which ecosystems were especially vulnerable. Fire size distribution was typically asymmetric with many small fires (<10. ha) and very few large fires (>500. ha). Ignitions were preferentially located close to villages, cities or roads, at low elevation and linked to high values of fire weather index. Fires were larger at the end of the dry season and during El Niño events. Most fires were bushfires burning in savannas, thickets and maquis, while rainforests were rather 'avoided' by fire. However, bushfires generally propagated towards forests of high-conservation value, thus increasing the potential for forest edge erosion. As savanna-forest and maquis-forest mosaics are dominant in the landscape, we discuss the extent to which NC could become a 'fire trap' where fire cannot be easily extirpated. Based on our spatially-explicit information on fire activity, we make recommendations for a sustainable forest and fire management policy which would balance the traditional use of fire and the conservation of the most valuable ecosystems. In particular, it may help by reducing the damages of large and destructive bushfires ignited during drought peaks. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65591
Appears in Collections: 影响、适应和脆弱性
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作者单位: Irstea, UR EMAX, 3275 route Cézanne, Aix-en-Provence, France; Cerege - Centre Européen de Recherche et d'Enseignement en Geosciences de l'Environnement, EuropÔle Méditerranéen de l'Arbois, Aix en Provence, France; Aix-Marseille Université, Aix en Provence, France; IRI, Columbia University, Palisades, United States; Paléoenvironnements et Chronoécologie (PALECO- EPHE) UMR 5059, Centre de Bio-Archéologie et d'Ecologie, Institut de botanique, 163 rue Auguste Broussonet, Montpellier, France; Ecole Pratique des Hautes Etudes, 7-14 rue Ferrus, Paris, France; IAC - Institut Agronomique néo-Calédonien (IAC), Diversité biologique et fonctionnelle des écosystèmes terrestres, BPA5, Nouméa, New Caledonia, France
Recommended Citation:
Curt T.,Borgniet L.,Ibanez T.,et al. Understanding fire patterns and fire drivers for setting a sustainable management policy of the New-Caledonian biodiversity hotspot[J]. Forest Ecology and Management,2015-01-01,337