DOI: 10.1016/j.foreco.2017.09.032
Scopus记录号: 2-s2.0-85029471161
论文题名: Impact of mechanical thinning on forest carbon, fuel hazard and simulated fire behaviour in Eucalyptus delegatensis forest of south-eastern Australia
作者: Volkova L. ; Bi H. ; Hilton J. ; Weston C.J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 405 起始页码: 92
结束页码: 100
语种: 英语
英文关键词: Allometric equations
; Alpine Ash
; CWD
; Eucalyptus delegatensis
; Forest carbon
; Fuels
; Wildfire
英文摘要: Forest mega-fires have become a global phenomenon in recent decades including in south-eastern Australia where large areas of forest have been fire-killed with loss of human lives and property and impacting carbon sequestration and greenhouse gas emissions. The vast extent and impact of mega-fires has induced a re-evaluation of fuel reduction methods as a key management strategy in wildfire risk mitigation in many countries. This study investigated the impact of a commercial thinning in Eucalyptus delegatensis forest on fuel hazard, fuel loads and wildfire behaviour, eight years after completion of a bay and outrow thinning operation. At the stand level, thinning reduced overstorey tree stocking by more than 50%, increased canopy openness and stimulated the growth of retained trees. Thinning also encouraged the profuse regeneration of over 1000 saplings ha−1 of E. delegatensis, mostly in the outrows, compared with no sapling regeneration in unthinned forest. A system of additive biomass equations was developed to estimate total biomass and component biomass (stem wood, bark, branches and foliage) of individual trees. The aboveground tree carbon was 433 ± 49 Mg C ha−1 in unthinned forest and 322 ± 47 Mg C ha−1 in thinned forest. Thinning decreased surface fuel hazard ratings and fuel loads but had no significant effect on the mass of coarse woody fuels. Fire simulation under severe to extreme weather conditions, as occurred in the 2006/7 Great Divide Fires, indicated an almost 30% reduction in fireline intensity and about 20% reduction in the rate of spread and spotting distance in thinned forest compared with unthinned forest. This study indicates the potential of thinning to reduce wildfire severity and to increase the fire-survival of E. delegatensis. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64063
Appears in Collections: 影响、适应和脆弱性
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作者单位: School of Ecosystem and Forest Sciences, Faculty of Science, The University of Melbourne, Water Street, Creswick, VIC, Australia; NSW Forest Science, Department of Industry-Lands, Level 12, 10 Valentine Ave, Parramatta, NSW, Australia; CSIRO Data61, Clayton SouthVIC, Australia
Recommended Citation:
Volkova L.,Bi H.,Hilton J.,et al. Impact of mechanical thinning on forest carbon, fuel hazard and simulated fire behaviour in Eucalyptus delegatensis forest of south-eastern Australia[J]. Forest Ecology and Management,2017-01-01,405