DOI: 10.5194/hess-23-2699-2019
论文题名: A 50-year analysis of hydrological trends and processes in a Mediterranean catchment
作者: Folton N. ; Martin E. ; Arnaud P. ; L'Hermite P. ; Tolsa M.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2019
卷: 23, 期: 6 起始页码: 2699
结束页码: 2714
语种: 英语
英文关键词: Floer homology
; Isoparametric hypersurfaces
; monotone Lagrangian submanifolds
Scopus关键词: Drought
; Land use
; Rain gages
; Runoff
; Floer homology
; Hydro climatologies
; Hydrological response
; Hyper-surfaces
; Land use and land cover
; Mediterranean catchment
; Mediterranean coasts
; Submanifolds
; Catchments
; catchment
; hydrological response
; hydrometeorology
; Lagrangian analysis
; land cover
; land use
; numerical method
; observatory
; precipitation (climatology)
; streamflow
; trend analysis
; vegetation
; wildfire
; France
; Maures Massif
; Mediterranean Region
; Provence-Alpes-Cote d'Azur
; Var
; Pinus pinaster
; Quercus suber
英文摘要: The Reál Collobrier hydrological observatory in south-eastern France, managed by Irstea since 1966, constitutes a benchmark site for regional hydro-climatology. Because of the dense network of stream gauges and rain gauges available, this site provides a unique opportunity to evaluate long-term hydro-meteorological Mediterranean trends. The main catchment (70km2) span classCombining double low line"inline-formula 2/span) and its sub-catchments are located in the Massif des Maures of south-eastern France, close to the Mediterranean coast. The vegetation is composed of forest mainly calcified on crystalline soils (maquis of heath, cork-oak, maritime pine and chestnut). Direct human influence has been negligible over the past 50 years. The land use and land cover has remained almost unchanged, with the notable exception of a wildfire in 1990 that impacted a small sub-catchment. Therefore changes in the hydrological response of the catchments are caused by changes in climate and/or physical conditions. This study investigates changes in observational data using up to 50-year daily series of precipitation and streamflow. The analysis used several climate indices describing distinct modes of variability, at inter-annual and seasonal timescales. Trends were assessed by the Mann-Kendall method. The analysis also used hydrological indices describing drought events based on daily data for a description of low flows, in particular in terms of timing and severity. The analysis shows that there is a marked tendency towards a decrease in the water resources of the Reál Collobrier catchment in response to climate trends, with a consistent increase in drought severity and duration. But the changes are variable among the sub-catchments.. © Author(s) 2019. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162951
Appears in Collections: 气候变化与战略
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作者单位: Folton, N., Irstea Aix Marseille Univ, RECOVER, 3275 Route de Cézanne, Aix-en-Provence, 13182, France; Martin, E., Irstea Aix Marseille Univ, RECOVER, 3275 Route de Cézanne, Aix-en-Provence, 13182, France; Arnaud, P., Irstea Aix Marseille Univ, RECOVER, 3275 Route de Cézanne, Aix-en-Provence, 13182, France; L'Hermite, P., Irstea Aix Marseille Univ, RECOVER, 3275 Route de Cézanne, Aix-en-Provence, 13182, France; Tolsa, M., Irstea Aix Marseille Univ, RECOVER, 3275 Route de Cézanne, Aix-en-Provence, 13182, France
Recommended Citation:
Folton N.,Martin E.,Arnaud P.,et al. A 50-year analysis of hydrological trends and processes in a Mediterranean catchment[J]. Hydrology and Earth System Sciences,2019-01-01,23(6)