Summer flows in experimental catchments with different forest covers, Chile

Iroumé, Andrés; Huber, Anton; Schulz, K. R.

doi:10.1016/j.jhydrol.2004.06.014

Cited by 52 publications

(38 citation statements)

References 21 publications

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“…Bosch and Hewlett, 1982;Troendle and King, 1987;Lavabre et al, 1993;Iroumé et al, 2005;Guillemette et al, 2005). However, water resources management often requires information on catchments of regional (>1000 km 2 ) or larger scale.…”

Section: Introductionmentioning

confidence: 99%

Changes in land cover, rainfall and stream flow in Upper Gilgel Abbay catchment, Blue Nile basin – Ethiopia

Rientjes

Haile

Kebede

et al. 2011

Hydrol. Earth Syst. Sci.

171

140

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Abstract. In this study we evaluated changes in land cover and rainfall in the Upper Gilgel Abbay catchment in the Upper Blue Nile basin and how changes affected stream flow in terms of annual flow, high flows and low flows. Land cover change assessment was through classification analysis of remote sensing based land cover data while assessments on rainfall and stream flow data are by statistical analysis. Results of the supervised land cover classification analysis indicated that 50.9 % and 16.7 % of the catchment area was covered by forest in 1973 and 2001, respectively. This significant decrease in forest cover is mainly due to expansion of agricultural land.By use of a change detection procedure, three periods were identified for which changes in rainfall and stream flow were analyzed. Rainfall was analyzed at monthly base by use of the Mann-Kendall test statistic and results indicated a statistically significant, decreasing trend for most months of the year. However, for the wet season months of June, July and August rainfall has increased. In the period 1973-2005, the annual flow of the catchment decreased by 12.1 %. Low flow and high flow at daily base were analyzed by a low flow and a high flow index that is based on a 95 % and 5 % exceedance probability. Results of the low flow index indicated decreases of 18.1 % and 66.6 % for the periods 1982-2000 and 2001-2005 respectively. Results of high flows indicated an increase of 7.6 % and 46.6 % for the same periods. In this study it is concluded that over the period 1973-2005 stream flow has changed in the Gilgel Abbay catchment by changes in land cover and changes in rainfall.

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Section: Introductionmentioning

confidence: 99%

Changes in land cover, rainfall and stream flow in Upper Gilgel Abbay catchment, Blue Nile basin – Ethiopia

Rientjes

Haile

Kebede

et al. 2011

Hydrol. Earth Syst. Sci.

171

140

View full text Add to dashboard Cite

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“…Al mismo tiempo, en regiones donde se observa un proceso de deforestación (Bent, 2001) y una expansión de las áreas urbanas (Sun et al, 2004), se detecta un incremento en la producción y exportación de agua. La reducción de la cubierta vegetal ha provocado, en determinados ambientes, cambios en la dinámica estacional de la escorrentía y un incremento de los caudales máximos (Iroumé et al, 2005). De cualquier modo, las interacciones que están presentes en la dinámica hidrológica de las zonas forestales son de tal complejidad, que en la mayoría de los casos es difícil extraer conclusiones simples (Cosandey et al, 2005).…”

Section: Introductionunclassified

Procesos hidrológicos en una cuenca forestal del Sistema Central : cuenca experimental de Rinconada

Fernández

Barbancho

Santana

et al. 2013

CIG

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“…The results of paired catchment studies in temperate zones have established strong links between deforestation and increasing mean discharge, and vice versa (Andréassian, 2004;Bosch and Hewlett, 1982;Hornbeck et al, 1993;Sahin and Hall, 1996). In single basin studies, large increases in discharge due to deforestation, or decreases due to reforestation, have been noted in Europe (Gallart and Llorens, 2004;Keesstra, 2006), Africa (Mahe et al, 2005;Scott et al, 2005), North America (Trimble et al, 1987), and South America (Costa et al, 2003;Iroumé et al, 2005). Various modelling studies of European streamflow have simulated significant changes in response to land use change (Bultot et al, 1990;Klöcking and Hamberlandt, 2002;Wegehenkel, 2002).…”

Section: Effects Of Land Use Change On Dischargementioning

confidence: 98%

Strong increases in flood frequency and discharge of the River Meuse over the late Holocene: impacts of long-term anthropogenic land use change and climate variability

Ward

Renssen

Aerts

et al. 2008

Hydrol. Earth Syst. Sci.

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Abstract. In recent years the frequency of high-flow events on the Meuse (northwest Europe) has been relatively great, and flooding has become a major research theme. To date, research has focused on observed discharge records of the last century and simulations of the coming century. However, it is difficult to delineate changes caused by human activities (land use change and greenhouse gas emissions) and natural fluctuations on these timescales. To address this problem we coupled a climate model (ECBilt-CLIO-VECODE) and a hydrological model (STREAM) to simulate daily Meuse discharge in two time-slices: 4000-3000 BP (natural situation), and 1000-2000 AD (includes anthropogenic influence). For 4000-3000 BP the basin is assumed to be almost fully forested; for 1000-2000 AD we reconstructed land use based on historical sources. For 1000-2000 AD the simulated mean annual discharge (260.9 m 3 s −1 ) is significantly higher than for 4000-3000 BP (244.8 m 3 s −1 ), and the frequency of large high-flow events (discharge >3000 m 3 s −1 ) is higher (recurrence time decreases from 77 to 65 years). On a millennial timescale almost all of this increase can be ascribed to land use changes (especially deforestation); the effects of climatic change are insignificant. For the 20th Century, the simulated mean discharge (270.0 m 3 s −1 ) is higher than in any other century studied, and is ca. 2.5% higher than in the 19th Century (despite an increase in evapotranspiration). Furthermore, the recurrence time of large high-flow events is almost twice as short as under natural conditions (recurrence time decreases from 77 to 40 years). On this timescale climate change (strong increase in annual and winter precipitation) overwhelmed land use change as the dominant forcing mechanism.

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Summer flows in experimental catchments with different forest covers, Chile

Cited by 52 publications

References 21 publications

Changes in land cover, rainfall and stream flow in Upper Gilgel Abbay catchment, Blue Nile basin – Ethiopia

Changes in land cover, rainfall and stream flow in Upper Gilgel Abbay catchment, Blue Nile basin – Ethiopia

Procesos hidrológicos en una cuenca forestal del Sistema Central : cuenca experimental de Rinconada

Strong increases in flood frequency and discharge of the River Meuse over the late Holocene: impacts of long-term anthropogenic land use change and climate variability

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