气候变化领域集成服务门户(CCPortal): A 50-year analysis of hydrological trends and processes in a Mediterranean catchment

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DOI	10.5194/hess-23-2699-2019
	A 50-year analysis of hydrological trends and processes in a Mediterranean catchment
	Folton N.; Martin E.; Arnaud P.; L'Hermite P.; Tolsa M.
发表日期	2019
ISSN	1027-5606
起始页码	2699
结束页码	2714
卷号	23 期号:6
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.
英文关键词	Floer homology; Isoparametric hypersurfaces; monotone Lagrangian submanifolds
语种	英语
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
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159661
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
推荐引用方式 GB/T 7714	Folton N.,Martin E.,Arnaud P.,et al. A 50-year analysis of hydrological trends and processes in a Mediterranean catchment[J],2019,23(6).
APA	Folton N.,Martin E.,Arnaud P.,L'Hermite P.,&Tolsa M..(2019).A 50-year analysis of hydrological trends and processes in a Mediterranean catchment.Hydrology and Earth System Sciences,23(6).
MLA	Folton N.,et al."A 50-year analysis of hydrological trends and processes in a Mediterranean catchment".Hydrology and Earth System Sciences 23.6(2019).