DOI: 10.5194/hess-19-3033-2015
Scopus记录号: 2-s2.0-84936984385
论文题名: Time series analysis of the long-term hydrologic impacts of afforestation in the Águeda watershed of north-central Portugal
作者: Hawtree D ; , Nunes J ; P ; , Keizer J ; J ; , Jacinto R ; , Santos J ; , Rial-Rivas M ; E ; , Boulet A ; -K ; , Tavares-Wahren F ; , Feger K ; -H
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2015
卷: 19, 期: 7 起始页码: 3033
结束页码: 3045
语种: 英语
Scopus关键词: Land use
; Reforestation
; Soil moisture
; Soil testing
; Soils
; Stream flow
; Vegetation
; Watersheds
; Eucalyptus globulus
; Hydrometeorological variables
; Infiltration capacity
; Large-scale afforestation
; Plantation forests
; Secondary transitions
; Soil water repellency
; Watershed characteristics
; Time series analysis
; afforestation
; baseflow
; coniferous tree
; evergreen tree
; hydrological change
; hydrological response
; hydrometeorology
; infiltration
; land cover
; land use change
; long-term change
; plantation forestry
; soil property
; spatiotemporal analysis
; time series analysis
; vegetation type
; watershed
; Forestation
; Forests
; Plantations
; Plants
; Water Sheds
; Portugal
; Vouga Basin
; Eucalyptus globulus
; Pinus pinaster
英文摘要: The north-central region of Portugal has undergone significant land cover change since the early 1900s, with large-scale replacement of natural vegetation types with plantation forests. This transition consisted of an initial conversion primarily to Pinus pinaster, followed by a secondary transition to Eucalyptus globulus. This land cover change is likely to have altered the hydrologic functioning of this region; however, these potential impacts are not fully understood. To contribute to a better understanding of the potential hydrologic impacts of this land cover change, this study examines the temporal trends in 75 years of data from the Águeda watershed (part of the Vouga Basin) over the period of 1936-2010. A number of hydrometeorological variables were analyzed using a combined Thiel-Sen/Mann-Kendall trend-testing approach, to assess the magnitude and significance of patterns in the observed data. These trend tests indicated that there have been no significant reductions in streamflow over either the entire test period, or during sub-record periods, despite the large-scale afforestation which has occurred. This lack of change in streamflow is attributed to the specific characteristics of the watershed and land cover change. By contrast, a number of significant trends were found for baseflow index, with positive trends in the early data record (primarily during Pinus pinaster afforestation), followed by negative trends later in the data record (primarily during Eucalyptus globulus afforestation). These trends are attributed to land use and vegetation impacts on streamflow generating processes, both due to species differences and to alterations in soil properties (i.e., infiltration capacity, soil water repellency). These results highlight the importance of considering both vegetation types/dynamics and watershed characteristic when assessing hydrologic impacts, in particular with respect to soil properties. © Author(s) 2015. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78474
Appears in Collections: 气候变化事实与影响
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作者单位: Technische Universita¨t Dresden, Institute of Soil Science and Site Ecology, Pienner Str. 19, Tharandt, Germany; University of Aveiro, Centre for Environmental and Marine Studies (CESAM), Department of Environment and Planning, Aveiro, Portugal
Recommended Citation:
Hawtree D,, Nunes J,P,et al. Time series analysis of the long-term hydrologic impacts of afforestation in the Águeda watershed of north-central Portugal[J]. Hydrology and Earth System Sciences,2015-01-01,19(7)