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Evaluating changes in catchment-scale evapotranspiration after 50% thinning in a headwater catchment
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  • Chen-Wei Chiu,
  • Takashi Gomi,
  • Marino Hiraoka,
  • Katsushige Shiraki,
  • Yuichi Onda,
  • Bui Dung
Chen-Wei Chiu
Tokyo University of Agriculture and Technology

Corresponding Author:[email protected]

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Takashi Gomi
Tokyo University of Agriculture and Technology
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Marino Hiraoka
Public Works Research Institute
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Katsushige Shiraki
Tokyo univ. of Agri. & Tech.
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Yuichi Onda
University of Tsukuba
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Bui Dung
Vietnam National University of Forestry
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We examined changes in catchment-scale annual and seasonal evapotranspiration after 50% strip thinning, using runoff data from headwater catchments. The short-term water balance (STWB) method between periods from 8 to 100 days was applied to the treated (KT) and control (KC) catchments. The estimated evapotranspiration during the pre- and post-thinning periods were 840 and 910 and 780 and 860 mm/year in the catchments KT and KC, respectively. According to a paired catchment analysis of estimated evapotranspiration, monthly evapotranspiration increased from 3 to 20 mm from June to December, while it decreased from 7 to 31 mm from January to May. The estimated annual and monthly evapotranspiration was compatible with the values monitored in the plot-scale interception, canopy transpiration, and ground surface evapotranspiration. Our findings showed that the decreases in evapotranspiration due to 50% thinning were similar or different in different methods of measurement when compared with thinning in the other catchments around the world. The STWB model can evaluate the effects of timber harvesting on changes in evapotranspiration (ET), including the reproduction of seasonal patterns of ET.
13 Jan 2022Submitted to Hydrological Processes
18 Jan 2022Submission Checks Completed
18 Jan 2022Assigned to Editor
20 Jan 2022Reviewer(s) Assigned
25 Mar 2022Review(s) Completed, Editorial Evaluation Pending
27 Mar 2022Editorial Decision: Revise Major
10 May 20221st Revision Received
10 May 2022Submission Checks Completed
10 May 2022Assigned to Editor
10 May 2022Reviewer(s) Assigned
16 May 2022Review(s) Completed, Editorial Evaluation Pending
16 May 2022Editorial Decision: Accept