气候变化领域集成服务门户(CCPortal): The effect of wildfire on the structure and water balance of a high conservation value Hualo (Nothofagus glauca (Phil.) Krasser.) forest in central Chile

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DOI	10.1016/j.foreco.2020.118219
	The effect of wildfire on the structure and water balance of a high conservation value Hualo (Nothofagus glauca (Phil.) Krasser.) forest in central Chile
	White D.A.; Balocchi-Contreras F.; Silberstein R.P.; Ramírez de Arellano P.
发表日期	2020
ISSN	0378-1127
卷号	472
英文摘要	The structure and water balance of an N. glauca forest were measured in the year before and for two years after the wildfires of January 2017. The aim was to investigate the relationship between changes in structure and in transpiration, canopy interception, soil evaporation and their proportional contribution to evapotranspiration. This forest recovered rapidly after the fire. After two months there was evidence of resprouting from ground level in all species and after four months regrowth was visible in the crown of N. glauca. One year after the fire the leaf area index of the overstorey had recovered by about 1.5 units and about 70% of all the trees were supporting live growth either at the base or in the crown. The overstorey sapwood area was 5 m2 ha−1 after the fire, down 60% from the 13 m2 ha−1 measured before the fire. In the year before the fire the total transpiration, canopy interception and soil evaporation were respectively 210 mm, 258 mm and 46 mm (evapotranspiration of 514 mm). In the first and second year after fire transpiration was 78 and 127, canopy interception was 145 and 85 mm and soil evaporation was 125 and 143 mm. Compared to before the fire, transpiration after the fire was reduced by 63%, canopy interception was reduced by 44% and soil evaporation increased approximately three-fold. The combined effect of all these changes in the partitioning of rainfall was a 33% reduction in evapotranspiration. The reduction in transpiration was in proportion with the reduction in sapwood area and was partially offset by a threefold increase in soil evaporation. Two years after the fire the water balance of this forest had substantially recovered and at the current rate of recovery will be at pre-fire levels in 2021. © 2020 Elsevier B.V.
关键词	Conservation Fires Forestry Recovery Soils Transpiration Wood products Canopy interception Central Chile Combined effect Conservation values Leaf Area Index Sapwood area Soil evaporations Water balance Evapotranspiration evapotranspiration growth leaf area index overstory rainfall water budget wildfire wood Conservation Fires Forestry Recovery Transpiration Wood Products Chile Nothofagus glauca
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132766
推荐引用方式 GB/T 7714	White D.A.,Balocchi-Contreras F.,Silberstein R.P.,et al. The effect of wildfire on the structure and water balance of a high conservation value Hualo (Nothofagus glauca (Phil.) Krasser.) forest in central Chile[J]. Forest Ecology and Management,2020,472.
APA	White D.A.,Balocchi-Contreras F.,Silberstein R.P.,&Ramírez de Arellano P..(2020).The effect of wildfire on the structure and water balance of a high conservation value Hualo (Nothofagus glauca (Phil.) Krasser.) forest in central Chile.,472.
MLA	White D.A.,et al."The effect of wildfire on the structure and water balance of a high conservation value Hualo (Nothofagus glauca (Phil.) Krasser.) forest in central Chile".472(2020).