DOI: 10.1016/j.foreco.2014.05.022
Scopus记录号: 2-s2.0-84902440888
论文题名: Effects of retention level and fire on retention tree dynamics in boreal forests
作者: Heikkala O. ; Suominen M. ; Junninen K. ; Hämäläinen A. ; Kouki J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 328 起始页码: 193
结束页码: 201
语种: 英语
英文关键词: Biodiversity
; Prescribed burning
; Retention forestry
; Tree dynamics
; Tree mortality
; Variable retention
Scopus关键词: Biodiversity
; Dynamics
; Fires
; Early-successional
; Eastern Finland
; Intensive forest management
; Prescribed burning
; Retention forestries
; Retention levels
; Tree mortality
; Variable retentions
; Forestry
; biodiversity
; boreal forest
; dead wood
; forest dynamics
; forest fire
; forest management
; forestry practice
; harvesting
; mortality
; prescribed burning
; species diversity
; Biodiversity
; Forest Fires
; Forestry
; Mortality
; Prescribed Burning
; Finland
英文摘要: Retention forestry has been used for over 20years to reduce the unfavorable impacts of intensive forest management on biodiversity. The assumed positive effects of retention trees, however, depend on the dynamics of trees in providing substrates or structures for forest-dwelling organisms. In 2000 an experimental study was established to investigate the effects of different retention levels (10m3ha-1 and 50m3ha-1) and fire on tree dynamics. In total, 2758 individually marked, initially living, retention trees were followed on 12 sites in eastern Finland over 10 post-harvest years. Over half (59%) of the total volume of the retention trees died during these initial 10years, and burning resulted in much higher mortality (84% vs. 34% on unburned sites). At lower retention levels, retention trees did not provide continuity of habitat substrates since all trees died quickly. Fire shortened the tree availability, due to increased tree mortality. However, in higher retention levels, burned areas maintained diverse deadwood substrates for an extended period. Our study proved that tree retention can maintain the continuity of dead wood over early successional stages, if the level of retention is high enough. Fire, combined with higher retention level, created diverse assemblages of dead and living trees. At lower retention levels, however, the effect of fire can be too severe for maintaining living trees or continuity of diverse dead wood. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65836
Appears in Collections: 影响、适应和脆弱性
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作者单位: School of Forest Sciences, University of Eastern Finland Joensuu, P.O. Box 111 (Yliopistokatu 7), FI-80101 Joensuu, Finland; Metsähallitus Natural Heritage Services, c/o UEF, P.O. Box 111 (Yliopistokatu 7), FI-80101 Joensuu, Finland
Recommended Citation:
Heikkala O.,Suominen M.,Junninen K.,et al. Effects of retention level and fire on retention tree dynamics in boreal forests[J]. Forest Ecology and Management,2014-01-01,328