Has land cover a significant impact on mean annual streamflow? An international assessment using 1508 catchments

Oudin, Ludovic; Andréassian, Vazken; Lerat, Julien; Michel, Claude

doi:10.1016/j.jhydrol.2008.05.021

Cited by 153 publications

(113 citation statements)

References 29 publications

Supporting

Mentioning

101

Contrasting

Unclassified

Order By: Relevance

“…The influence of forests on the components of the hydrological cycle impacting on the streamflow, and consequently on the water availability of the watersheds has been well documented and systematized in the scientific literature ( (Andréassian, 2004;Bruijnzeel, 2004;Calder, 2007;Oudin et al, 2008;Peel, 2009;Salemi et al, 2013;Ponette-González et al, 2014). As a rule, forests have the positive impact of increasing soil water infiltration, with consequent reduction of surface runoff and water erosion, which are also associated to higher re-supply of the aquifers and greater sub-surface flow.…”

Section: Relationship Of the Streamflow With Forest Coverage And Precmentioning

confidence: 99%

“…Due to different watersheds having totally different characteristics from one another regardless of how close they are, they will have different impacts on the streamflow resulting from changes in their forest coverage. Therefore, the impact of forests on the streamflow depend (to a greater or lesser extent) on several factors such as: the size of the watershed; the use of the soil being replaced by the forest; the fraction of the replaced area; the management, soil types and their properties (essentially their infiltration, transmission and water retention capacities); the depth of the water table; the spatial conformation of land uses in the river basin; climatic and meteorological characteristics prevailing in the region; climate changes; the topography of the land and other morphometric characteristics of the watershed (Farley et al, 2005;Oudin et al, 2008;Peel, 2009;Komatsu et al, 2010;Williams et al, 2012;Ferraz et al, 2013;Salemi et al, 2013). Based on the abovementioned for the present study, most of the nonsignificant results found may be due to a balance between variations in infiltration and ET variations, resulting in little influence of the forests on the streamflow.…”

Section: Relationship Of the Streamflow With Forest Coverage And Precmentioning

confidence: 99%

See 1 more Smart Citation

Forest Coverage and Streamflow of Watersheds in the Tropical Atlantic Rainforest

2018

View full text Add to dashboard Cite

-The present study analyzed the average and minimum streamflow behavior of 11 watersheds located in the Atlantic Forest Biome, relating them to the changes in forest cover. The average minimum flow with seven days of duration (Q 7 ), the average annual flow (Q ave ), the total annual precipitation (P a ) and the percentage of forest cover (FC) for each watershed were determined. The joint correlation between the FC and the P a with the flow for each watershed were analyzed by adjusting multiple linear regression equations. The partial correlation coefficient was also used to analyze whether the variation in the FC influenced the water flow when the effects of P a are fixed. This study allowed us to identify significant associations between FC and P a with Q 7 or Q ave in only two of the watersheds. Disregarding the effects of P a , the increase in the FC tended to result in a reduction in the Q ave , and in turn increased the Q 7 in these two watersheds.Keywords: Water availability, Watershed management, Forest hydrology. COBERTURA FLORESTAL E VAZÕES DE BACIAS HIDROGRAFICAS DAMATA ATLÂNTICA RESUMO -O presente trabalho analisou o comportamento das vazões médias e mínimas de cursos d'água de 11 bacias hidrográficas localizadas no Bioma Mata Atlântica, relacionando-as às mudanças ocorridas na cobertura florestal. Determinaram-se, para cada bacia, a vazão mínima média com sete dias de duração (Q 7 ), a vazão média anual (Q ave ), a precipitação total anual (Pa) e o percentual de cobertura florestal (FC). Para cada bacia, a correlação conjunta da FC e Pa com as vazões foi analisada por meio do ajuste de equações de regressão linear múltipla. Também foi utilizado o coeficiente de correlação parcial para analisar se a variação do FC exerceu influência nas vazões, quando os efeitos da Pa são fixados. O estudo permitiu a identificação de associações significativas entre FC e Pa com Q 7 ou Q ave em apenas duas bacias. Descontados os efeitos da Pa, o incremento da FC tendeu a provocar redução da Q ave , tendo como contrapartida o aumento da Q 7 nestas duas bacias.

show abstract

Section: Relationship Of the Streamflow With Forest Coverage And Precmentioning

confidence: 99%

Section: Relationship Of the Streamflow With Forest Coverage And Precmentioning

confidence: 99%

Forest Coverage and Streamflow of Watersheds in the Tropical Atlantic Rainforest

2018

View full text Add to dashboard Cite

show abstract

“…Along with 'bottom-up' experimental approaches, energybased theoretical equations describing climate and water balance have been developed and applied in what is often called a topdown approach [14][15][16] . Among them, frameworks by Budyko 17 and Fuh 18 have received the most attention and application 19 .…”

mentioning

confidence: 99%

Global pattern for the effect of climate and land cover on water yield

et al. 2015

View full text Add to dashboard Cite

Research results on the effects of land cover change on water resources vary greatly and the topic remains controversial. Here we use published data worldwide to examine the validity of Fuh's equation, which relates annual water yield (R) to a wetness index (precipitation/ potential evapotranspiration; P/PET) and watershed characteristics (m). We identify two critical values at P/PET ¼ 1 and m ¼ 2. m plays a more important role than P/PET when mo2, and a lesser role when m42. When P/PETo1, the relative water yield (R/P) is more responsive to changes in m than it is when P/PET41, suggesting that any land cover changes in non-humid regions (P/PETo1) or in watersheds of low water retention capacity (mo2) can lead to greater hydrological responses. m significantly correlates with forest coverage, watershed slope and watershed area. This global pattern has far-reaching significance in studying and managing hydrological responses to land cover and climate changes.

show abstract

“…(1.1)) are negligible such that dS/dt ≈ 0. The aridity index and the evaporation ratio can be put into relation such that Koster and Suarez , 1999;Arora, 2002;Sankarasubramanian and Vogel , 2003;Donohue et al, 2007;Yang et al, 2007;Oudin et al, 2008;Yang et al, 2008;Szilagyi and Jozsa, 2009;Yang et al, 2009], but only relatively few assessed its variability across large spatial scales and along hydroclimatic gradients. For the eastern part of the continental United States (US) Milly [1994] was one of the first to use a physically based parametrisation of F to estimate mean annual runoff.…”

Section: Longterm Summaries Of Hydrological Variables the Coupled Watmentioning

confidence: 99%

“…Great Britain [Oudin et al, 2008]. Due to the regional focus of these studies they only provide an incomplete picture of the coupled energy-water balance in Europe, focusing on regions with predominantly humid climates.…”

Section: Introductionmentioning

confidence: 99%

Spatial cross‐correlation patterns of European low, mean and high flows

Gudmundsson¹,

Tallaksen²,

Stahl³

2011

Hydrological Processes

View full text Add to dashboard Cite

Low and high flows are associated with different hydrological processes. High flows correspond to the direct response of catchments to water input, whereas low flows occur in pronged dry periods and are governed by depleting storages. Therefore, the inter‐annual dynamics of high and low flows are often considered to be independent. To shed light on this assumption, we analysed a pan‐European dataset of 615 streamflow records, summarized as time series of annual streamflow percentiles (5th, 10th, …, 95th). The analysis was based on comparing the spatial cross‐correlation patterns derived from the different percentile series. Their interrelation was visualized by projecting them into a low‐dimensional space. We found that large parts of the cross‐correlations of the percentile series can be summarized by one dominating component. This component represents geographical continuous regions in Europe of correlated streamflow. Departures from this mean pattern occurred for low and high flows and were characterized by the corresponding spatial correlation functions. Generally, spatial correlations appear to be stronger for high flows than for mean flows, particularly for short distances (<400 km). Low flows, on the other hand, have the lowest spatial correlations for short distances. For longer distances (>800 km), this pattern reverses and the spatial correlation of low flows become largest. This discrepancy between low and high flows suggests that hydrological systems are more homogeneously linked to climatic fluctuations under wet conditions. Under dry conditions, local catchment properties appear to play a larger role in translating climatic fluctuations into hydrological response. Copyright © 2010 John Wiley & Sons, Ltd.

show abstract

Has land cover a significant impact on mean annual streamflow? An international assessment using 1508 catchments

Cited by 153 publications

References 29 publications

Forest Coverage and Streamflow of Watersheds in the Tropical Atlantic Rainforest

Forest Coverage and Streamflow of Watersheds in the Tropical Atlantic Rainforest

Global pattern for the effect of climate and land cover on water yield

Spatial cross‐correlation patterns of European low, mean and high flows

Contact Info

Product

Resources

About