DOI: 10.1016/j.foreco.2015.05.034
Scopus记录号: 2-s2.0-84953351450
论文题名: Differences in carbon uptake and water use between a managed and an unmanaged beech forest in central Germany
作者: Herbst M. ; Mund M. ; Tamrakar R. ; Knohl A.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 355 起始页码: 101
结束页码: 108
语种: 英语
英文关键词: Beech forest
; Biometry
; Eddy covariance
; Evapotranspiration
; Primary production
; Water use efficiency
Scopus关键词: Atmospheric chemistry
; Biometrics
; Carbon dioxide
; Climate change
; Drought
; Ecology
; Ecosystems
; Evapotranspiration
; Land use
; Reforestation
; Water supply
; Beech forest
; Biometry
; Eddy covariance
; Primary production
; Water use efficiency
; Forestry
; Acer pseudoplatanus
; Fagus
; Fagus sylvatica
; Fraxinus excelsior
英文摘要: Net atmospheric carbon dioxide exchange, total evapotranspiration and net primary production of two neighbouring beech (Fagus sylvatica L. .) forests in central Germany differing in site management were measured using the eddy covariance technique and biometric methods. The unmanaged site was an old-growth forest with admixtures of ash (Fraxinus excelsior L.) and sycamore (Acer pseudoplatanus L.) trees whereas the managed site was a regularly thinned, even-aged (about 130. years old), pure beech stand. Average carbon fluxes measured over seven years did not differ significantly between the two forests. Evapotranspiration was slightly higher (and consequently water use efficiency lower) at the unmanaged site. The maximum rates as well as the interannual variability of both net ecosystem exchange and net primary production were considerably larger at the managed, even-aged stand. The lowest annual carbon sequestration rates were observed in years with high fruit production in beech combined with cold and dry spells during leaf development which affected the carbon balance of the managed forest more than that of the unmanaged forest. In contrast, an extraordinarily dry period in late summer 2003 caused a stronger reduction in net carbon uptake in the old-growth forest which can probably be attributed to the contribution of ash to the ecosystem fluxes. Ash has a different phenology which made it more susceptible to the late summer drought. The relative importance of tree and structural (age, size) diversity, leaf area index and regenerative growth as well as the temporal frame and extent of single weather extremes for the forest-atmosphere exchange is discussed and it is concluded that site management and forest structure needs to be included in soil-vegetation-atmosphere-transfer models as it can often override effects of land use or plant functional type. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65611
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Thünen Institute of Climate-Smart Agriculture, Bundesallee 50, Braunschweig, Germany; Department Bioclimatology, University of Göttingen, Büsgenweg 2, Göttingen, Germany; Department Silviculture and Forest Ecology of the Temperate Zones, University of Göttingen, Büsgenweg 1, Göttingen, Germany
Recommended Citation:
Herbst M.,Mund M.,Tamrakar R.,et al. Differences in carbon uptake and water use between a managed and an unmanaged beech forest in central Germany[J]. Forest Ecology and Management,2015-01-01,355