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Registro Completo
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
03/07/2020 |
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Data da última atualização: |
12/11/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
RIZZO, R.; GARCIA, A. S.; VILELA, V. M. de F. N.; BALLESTER, M. V. R.; NEILL, C.; VICTORIA, D. de C.; ROCHA, H. R. da; COE, M. T. |
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Afiliação: |
RODNEI RIZZO, Cena/USP; ANDREA S. GARCIA, Cena/USP; VÍVIAN M. DE F. N. VILELA, Cena/USP; MARIA VICTORIA R. BALLESTER, Cena/USP; CHRISTOPHER NEILL, Woods Hole Research Center; DANIEL DE CASTRO VICTORIA, CNPTIA; HUMBERTO R. DA ROCHA, USP; MICHAEL T. COE, Woods Hole Research Center. |
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Título: |
Land use changes in Southeastern Amazon and trends in rainfall and water yield of the Xingu River during 1976-2015. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Climatic Change, v. 162, n. 3, p. 1419-1436, Oct. 2020. |
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DOI: |
https://doi.org/10.1007/s10584-020-02736-z |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract. Since the early 1970s, the agricultural frontier of southeastern Amazon has undergone extensive land use changes. These alterations, combined with regional climate changes, have the potential to influence the hydrologic cycle at small to large scales. We evaluated a 40-year time series (1976 to 2015) of rainfall and water yield and related them to land use changes in the Upper Xingu River Basin (UX). We acquired data from six rainfall stations and four river gauges and mapped land use changes. Mann-Kendall trend analysis and Pettitt´s change point detection were employed to describe annual and seasonal changes in the time series. Monthly water yield from the Xingu River was used to derive annual, seasonal, and monthly water yield, as well as the runoff coefficient. The largest changes in land use occurred during the last two decades and approximately 60,900 km2 in the Upper Xingu Basin were deforested between 1985 and 2015. Rainfall in the Xingu Basin decreased by about 245 mm over the period but there was no trend in water yield. The number of rainy days and intensity of events also decreased, but the length of the rainy season and seasonal and annual water yield did not change. Although watershed deforestation has increased water yield in other Amazon rivers, the reduction in rainfall in the Upper Xingu Basin was high enough to mask this effect. |
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Palavras-Chave: |
Bacia do Rio Xingu; Hydro-climatological indicators; Mann-Kendall analysis; Upper Xingu Basin. |
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Thesagro: |
Chuva; Desmatamento; Uso da Terra. |
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Thesaurus NAL: |
Amazonia; Climate change; Deforestation; Land use; Land use change. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02460naa a2200361 a 4500
001 2123620
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008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s10584-020-02736-z$2DOI
100 1 $aRIZZO, R.
245 $aLand use changes in Southeastern Amazon and trends in rainfall and water yield of the Xingu River during 1976-2015.$h[electronic resource]
260 $c2020
520 $aAbstract. Since the early 1970s, the agricultural frontier of southeastern Amazon has undergone extensive land use changes. These alterations, combined with regional climate changes, have the potential to influence the hydrologic cycle at small to large scales. We evaluated a 40-year time series (1976 to 2015) of rainfall and water yield and related them to land use changes in the Upper Xingu River Basin (UX). We acquired data from six rainfall stations and four river gauges and mapped land use changes. Mann-Kendall trend analysis and Pettitt´s change point detection were employed to describe annual and seasonal changes in the time series. Monthly water yield from the Xingu River was used to derive annual, seasonal, and monthly water yield, as well as the runoff coefficient. The largest changes in land use occurred during the last two decades and approximately 60,900 km2 in the Upper Xingu Basin were deforested between 1985 and 2015. Rainfall in the Xingu Basin decreased by about 245 mm over the period but there was no trend in water yield. The number of rainy days and intensity of events also decreased, but the length of the rainy season and seasonal and annual water yield did not change. Although watershed deforestation has increased water yield in other Amazon rivers, the reduction in rainfall in the Upper Xingu Basin was high enough to mask this effect.
650 $aAmazonia
650 $aClimate change
650 $aDeforestation
650 $aLand use
650 $aLand use change
650 $aChuva
650 $aDesmatamento
650 $aUso da Terra
653 $aBacia do Rio Xingu
653 $aHydro-climatological indicators
653 $aMann-Kendall analysis
653 $aUpper Xingu Basin
700 1 $aGARCIA, A. S.
700 1 $aVILELA, V. M. de F. N.
700 1 $aBALLESTER, M. V. R.
700 1 $aNEILL, C.
700 1 $aVICTORIA, D. de C.
700 1 $aROCHA, H. R. da
700 1 $aCOE, M. T.
773 $tClimatic Change$gv. 162, n. 3, p. 1419-1436, Oct. 2020.
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