Attributing Changes in Streamflow to Land Use and Climate Change for 472 Catchments in Australia and the United States

Martijn J. Booij, Theo C. Schipper, Hero Marhaento

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Abstract

A data-based method to distinguish climate and land use change impacts on streamflow has been previously developed and needs further evaluation through a large sample study. This study aims to apply the method to a large sample set of 472 catchments in the United States and Australia. The method calculates the water and energy budget of a catchment which can be translated to climate and land use induced changes in streamflow between two periods: a pre-change and post-change period. Several geographical characteristics (e.g., aridity index, average catchment slope, historical land use) were considered for the interpretation of the results. The results show that in general as expected, an increase of the annual discharge is caused by deforestation and a wetter climate, and a decrease of the annual discharge is caused by afforestation and a drier climate. In addition, changes in streamflow of American catchments are likely caused by a wetter climate, while changes in streamflow of Australian catchments are caused by a wetter or drier climate. It can be concluded that the method performs reasonably well and that the results are best explained by the location of the catchment, the aridity index and historical land use.
Original languageEnglish
Article number1059
JournalWater
Volume11
Issue number5
DOIs
Publication statusPublished - 21 May 2019

Fingerprint

Climate Change
stream flow
Climate
Land use
Climate change
land use change
Catchments
streamflow
climate change
land use
climate
catchment
dry environmental conditions
aridity
geographical characteristics
Conservation of Natural Resources
Deforestation
Budgets
afforestation
energy budget

Keywords

  • Attribution
  • Australia
  • Climate change
  • Data-based
  • Discharge
  • Land use change
  • United States

Cite this

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Attributing Changes in Streamflow to Land Use and Climate Change for 472 Catchments in Australia and the United States. / Booij, Martijn J.; Schipper, Theo C.; Marhaento, Hero.

In: Water, Vol. 11, No. 5, 1059, 21.05.2019.

Research output: Contribution to journalArticleAcademicpeer-review

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