Assessing the Effect of Land Use Change on the Amazon Basin River Discharge

IR (HANDLE) Open Access

Bibliographic Information

Other Title
  • アマゾン流域の河川流量の土地利用変化の影響の評価

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Description

The objective of this study is to assess the effect of land use on discharge in a sub-basin of the Amazon basin, Brazil. This sub-basin is called Humaita and has roughly 1 million km2. The data set for this study consists of precipitation and climate variables derived from a global re-analysis with a resolution of 50 km. Discharges data were acquired from the Brazilian water resources agency (ANA). The daily data set encompasses a period of 35 years (1972-2006). TOPMODEL with a multi-velocity approach was chosen as a hydrological model due to its simplicity and efficiency. The methodology consists basically of: (1) model calibration against a period of six years; (2) model validation and effect of land use identification against the entire time-series. The effect of land use was analyzed using the model efficiency to simulate the discharges for each year during the period of validation and re-calibrating the model for each year. After the re-calibration, the temporal variation of the model parameters values was analyzed. It was observed variations in model parameterization and this may be associated to land use change.

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Details 詳細情報について

  • CRID
    1050001335723632768
  • NII Book ID
    AN00027784
  • ISSN
    0386412X
  • HANDLE
    2433/151085
  • Text Lang
    en
  • Article Type
    departmental bulletin paper
  • Data Source
    • IRDB

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