Factors determining relations between stand age and catchment water balance in mountain ash forests

Vertessy, Rob; Watson, Fred; O'Sullivan, S. K.

doi:10.1016/s0378-1127(00)00501-6

Cited by 290 publications

(314 citation statements)

References 19 publications

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“…Neste contexto, as variações percebidas na vazão podem ser creditadas à maior evapotranspiração na fase de crescimento e à posterior queda com o amadurecimento entre o décimo segundo e o décimo quinto ano do estádio de desenvolvimento. Isso reforça a tendência natural dos reflorestamentos em reduzir a evapotranspiração em idades mais longevas, o que explicaria o progressivo aumento de vazão de bacias com este tipo de vegetação após o décimo quarto ano de idade (KUCZERA, 1987;JAYASURIYA et al, 1993;VERTESSY et al, 1995;VERTESSY et al, 2001;ROBERTS et al, 2001) (Tabela 1). -4,50 -1,72 -15,34 -2,17 -9,85 3,17 -10,42 -16,59 1,10 -4,06 8,99 -11,39 -25,57 -9,99 -4,72 4 Ribeirão Boa Vista -1,98 0, 87 -13,11 0,40 -7,48 -1,70 -14,65 -20,53 -3,67 -8,58 3,85 -15,57 -29,08 -14,24 -9,22 5 Ribeirão [8][9][10][11][12][13][14][15][16][17][1][2][3][4][5][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]87 6 Rio do [8][9][10][11][12][13][14][15][16][17]…”

Section: Resultsunclassified

“…Este processo é responsável pela manutenção do escoamento fluvial nos períodos de estiagem (Tabela 3). O resultado obtido neste estudo corrobora os trabalhos de Swank e Miner (1968), Putuhena & Cordery (2000) e Vertessy et al (2001), que observaram maior impacto na redução do escoamento superficial onde a cobertura com espécies de cerrado foi substituída por Eucalyptus sp. Garcia et al (2006) obtiveram resultados semelhantes na bacia do Rio Corumbataí (SP), onde verificaram uma diminuição na vazão média anual no cenário de mata nativa típica de cerrado quando comparado ao cenário atual de uso do solo ocupado por reflorestamentos.…”

Section: Evandro Luís Rodrigues Marcos Antônio Timbó Elmiro Claudiaunclassified

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Aplicação do modelo SWAT na avaliação do consumo de água em áreas de florestas plantadas na bacia do rio pará, Alto São Francisco, em Minas Gerais

et al. 2015

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RESUMO:As florestas são de grande importância para o equilíbrio do ciclo hidrológico. Existe, porém, uma discussão acerca de que plantações florestais aumentam exageradamente o consumo de água das bacias hidrográficas, especialmente, se as plantações substituem vegetação original de porte menor como é o caso do cerrado. Este estudo teve por objetivo investigar a influência dos reflorestamentos na manutenção e no equilíbrio do ciclo hidrológico na bacia do Rio Pará, utilizando o modelo hidrológico SWAT. Os resultados evidenciam a eficiência da modelagem ambiental como método a fim detectar impactos no balanço hídrico decorrentes de alterações da cobertura vegetal. O diagnóstico revelou uma redução no consumo de -4,26% no cenário de mata nativa, -9,68% no cenário de reflorestamento médio e -11,59% no reflorestamento intenso. A curva de permanência sugere a existência de grandes armazenamentos naturais indicando um alto grau de resiliência do comportamento hidrológico. Além dos efeitos da cobertura vegetal, os resultados também indicam uma estreita influência exercida pelas variáveis físicas e climáticas na governança sobre a produção hídrica da bacia. Os resultados gerados pelo modelo SWAT foram

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Section: Resultsunclassified

Section: Evandro Luís Rodrigues Marcos Antônio Timbó Elmiro Claudiaunclassified

Aplicação do modelo SWAT na avaliação do consumo de água em áreas de florestas plantadas na bacia do rio pará, Alto São Francisco, em Minas Gerais

et al. 2015

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“…Empirical observations and limited data on the environmental influences of forests are often inconclusive and even contradictory. Vertessy et al (2001) showed that this relationship varied over time with changes in watershed conditions and ecosystem structure. Hibbert (1967) concluded that the response of stream flow to altered land use was "highly variable and for the most part unpredictable".…”

Section: Introductionmentioning

confidence: 99%

Scale effects and variability of forest–water yield relationships on the Loess Plateau, China

Sun

et al. 2014

The Forestry Chronicle

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The relationship between forests and water yield on the Loess Plateau is a concern to forest hydrologists and local governments. Most research indicates that forests reduce runoff but the degree of reduction is different at different sites. Data on precipitation, runoff depth, evapotranspiration and forest cover were collected for 67 watersheds through synthesizing published literature. Results suggest that afforestation on sparsely vegetated catchments reduces runoff and that this effect decreased with increasing forest cover. Annual runoff coefficients fluctuate around 4.1%. Catchment scales influence the relationship between percent forest and runoff coefficient. We believe that afforestation-water yield relationships are variable. Large-scale watersheds may have a relatively high buffering capacity that masks forest cover effects on runoff because of a number of interacting factors. Results from this research will support the implementation of large-scale afforestation programs on the Loess Plateau.Keywords: afforestation, hydrologic impact, water yield RÉSUMÉ La relation entre les forêts et l'apport en eau sur le Plateau de Loess est au coeur des interrogations des hydrologistes forestiers et des gouvernements locaux. La plupart des recherches indiquent que les forêts réduisent le ruissellement mais le niveau de ré-duction est différent selon les sites. Les données sur les précipitations, la profondeur du ruissellement, l' évapotranspiration et le couvert forestier ont été recueillies dans 67 bassins hydrographiques à partir de la synthèse des documents publiés. Les résultats indiquent que le boisement effectué sur des bassins hydrographiques à végétation rare réduit le ruissellement et que cet effet diminue selon l'accroissement du couvert forestier. Les coefficients de ruissellement annuel fluctuent aux environs de 4,1%. La taille du bassin hydrographique influence la relation entre le pourcentage de forêt et le coefficient de ruissellement. Nous croyons que les relations entre le boisement et le ruissellement sont variables. Les bassins hydrographiques de grandes dimensions peuvent présenter un pouvoir tampon relativement supérieur qui masque les effets du couvert forestier sur le ruissellement à cause de l'interaction de plusieurs facteurs. Les résultats de cette recherche aideront à la mise en place de programmes de boisement de grande envergure sur le Plateau de Loess.

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“…Haydon et al (1996) analysed a comprehensive dataset on rainfall interception from E. regnans forests and reported changes in rainfall interception with forest age, accounting for about one-quarter of the variation in stream flow with age. Vertessy et al (2001) undertook further measurements of overstorey and understorey transpiration and leaf area index in different aged stands. Based on these data, the rainfall interception versus forest age relationship reported by Haydon et al (1996) and estimates of evaporation from the forest floor (McJannet et al 1996), Vertessy et al (2001) compiled estimates of interception, forest floor evaporation, and understorey and overstorey transpiration across a chronosequence of five age classes of E. regnans ranging from 15 to 240 years.…”

Section: Introductionmentioning

confidence: 99%

“…Vertessy et al (2001) undertook further measurements of overstorey and understorey transpiration and leaf area index in different aged stands. Based on these data, the rainfall interception versus forest age relationship reported by Haydon et al (1996) and estimates of evaporation from the forest floor (McJannet et al 1996), Vertessy et al (2001) compiled estimates of interception, forest floor evaporation, and understorey and overstorey transpiration across a chronosequence of five age classes of E. regnans ranging from 15 to 240 years. They concluded that for an annual rainfall of 1800 mm year -1 , total ET declines from~1371 mm year -1 in 15-year-old, to 911 mm year -1 in 240-year-old forest.…”

Section: Introductionmentioning

confidence: 99%

Comment on Wood et al. 2008, 'Impacts of fire on forest age and runoff in mountain ash forests'

Benyon

Haydon

Vertessy

et al. 2010

Functional Plant Biol.

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Abstract. Wood et al. (2008; FPB 35) concluded their measurements of evapotranspiration (ET) in Eucalyptus regnans F.Muell. forest at Wallaby Creek, Victoria showed that ET differs only slightly between regrowth and oldgrowth, contrary to the findings of previous research. We assert that the conclusions of Wood et al. are invalid and argue that Wood et al. substantially overestimated annual transpiration and rainfall. Monthly whole-forest ET measured by Wood et al. using eddy covariance in a 296-year-old stand sum to~700 mm year -1 ; consistent with rainfall of 721 mm year -1 recorded nearby by the Bureau of Meteorology. However, the Wood et al. conclusions were based on 1077 mm annual transpiration at this site, which appears to be estimated from a few months of heat pulse velocity measurements. Transpiration alone cannot be 54% higher than whole-forest ET because the latter includes transpiration, rainfall interception and evaporation from the forest floor. We believe Wood et al. made errors in scaling heat pulse velocities to whole-stand annual transpiration. Their rainfall of 1175 mm year -1 averages 62% higher than at three Bureau of Meteorology and Melbourne Water sites nearby. The paper also contains inaccuracies in reporting of the literature and numerous other errors.

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Factors determining relations between stand age and catchment water balance in mountain ash forests

Cited by 290 publications

References 19 publications

Aplicação do modelo SWAT na avaliação do consumo de água em áreas de florestas plantadas na bacia do rio pará, Alto São Francisco, em Minas Gerais

Aplicação do modelo SWAT na avaliação do consumo de água em áreas de florestas plantadas na bacia do rio pará, Alto São Francisco, em Minas Gerais

Scale effects and variability of forest–water yield relationships on the Loess Plateau, China

Comment on Wood et al. 2008, 'Impacts of fire on forest age and runoff in mountain ash forests'

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