DOI: 10.1016/j.foreco.2013.05.002
Scopus记录号: 2-s2.0-84878700348
论文题名: Stand water use status in relation to fire in a mixed species eucalypt forest
作者: Gharun M. ; Turnbull T.L. ; Adams M.A.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 304 起始页码: 162
结束页码: 170
语种: 英语
英文关键词: Australia
; Eucalyptus
; Fire
; Mixed-species
; Sap flux
; Transpiration
Scopus关键词: Australia
; Eucalyptus
; Leaf physiologies
; Leaf water potential
; Mixed species
; Sap flux
; Stomatal conductance
; Vapour pressure deficits
; Fires
; Transpiration
; Vapors
; Water supply
; Reforestation
; evergreen forest
; forest ecosystem
; forest fire
; hypothesis testing
; mixed forest
; physiology
; regeneration
; resprouting
; sap flow
; stomatal conductance
; transpiration
; Australia
; Stanley [Tasmania]
; Tasmania
; Victoria [Australia]
; Eucalyptus
英文摘要: Previous research on seed-regenerating eucalypt species (e.g. ash-type eucalypts) posits that water use by regenerating forests increases quickly after fire and may exceed that of mature forests (by as much as 100%) for periods of many decades. This hypothesis has not been tested in forests dominated by re-sprouting eucalypts. We examined the effect of fire on tree and stand-level water use in a resprouting mixed species eucalypt forests close to Stanley in north-east Victoria, Australia.In general, rates of water use in regenerating mixed-species eucalypt forests 3years after fire were very similar to those for adjacent unburnt mature forests (0.48±0.14 in regenerating vs. 0.66±0.17mmday-1 in unburnt forest, mean±0.95 CIs). This clear difference between resprouters and seeders corresponds to: slower sap flow in resprouting trees; a comparatively limited increase in sapwood area index (22% compared to 70% in Alpine ash forests); and a 20% decrease in total leaf area index after the fire. While the general climate differed little amongst study forests due to their close spatial proximity, vapour pressure deficit within unburnt was greater than regenerating forest and was the main control of tree water use, irrespective of species. Midday leaf water potential and measures of leaf physiology (except stomatal conductance) derived from gas-exchange measurements were similar between mature and resprouting trees, but the stomata of resprouting trees maintained a greater conductance to water vapour than mature leaves.A few years after crown-removing fires, water use by resprouting mixed-species eucalypt forests was little different to nearby mature forests. These results strongly contrast post-fire patterns in water use for the seeder (ash-type) eucalypt forests. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66481
Appears in Collections: 影响、适应和脆弱性
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作者单位: Faculty of Agriculture and Environment, University of Sydney, Sydney, NSW, Australia; Bushfire Cooperative Research Centre, Melbourne, VIC, Australia
Recommended Citation:
Gharun M.,Turnbull T.L.,Adams M.A.. Stand water use status in relation to fire in a mixed species eucalypt forest[J]. Forest Ecology and Management,2013-01-01,304