The impact of climate change on agriculture water resources for paddy rice over southern Taiwan

Pao-Shan Yu, Hung Wei Tseng, Shien Tsung Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This work aims to investigate the impacts of hydrologic drought on agricultural water resources under climate change scenarios. The study area is Tseng-Wen Reservoir basin in southern Taiwan, which receives temporally uneven precipitation. It is thus a basin prone to suffer from drought during dry season. General circulation models (GCMs) are the main tool to tackle climate change issues through the help of prescribed scenarios. This work used several approaches, including spatial downscaling, temporal downscaling and hydrologic model, to solve the coarse-resolution problem of GCMs and then to analyze the effect of climate change in the study area. The following are important findings: (1) According to future climate projections, droughts may become more frequent (hereafter referred to as scenario droughts), but their duration and magnitude may become more diverse than those of the baseline droughts. (2) The times of start and end of scenario droughts may occur earlier than those of baseline droughts. (3) Scenario low flow during the dry period tends to decrease in January and February, but to increase in March and April. (4) Moderate adjustment of irrigation period to adapt to climate change is suggested.

Original languageEnglish
Title of host publicationModelling for Environment's Sake
Subtitle of host publicationProceedings of the 5th Biennial Conference of the International Environmental Modelling and Software Society, iEMSs 2010
Pages1703-1709
Number of pages7
Publication statusPublished - 2010 Dec 1
Event5th Biennial Conference of the International Environmental Modelling and Software Society: Modelling for Environment's Sake, iEMSs 2010 - Ottawa, ON, Canada
Duration: 2010 Jul 52010 Jul 8

Publication series

NameModelling for Environment's Sake: Proceedings of the 5th Biennial Conference of the International Environmental Modelling and Software Society, iEMSs 2010
Volume2

Other

Other5th Biennial Conference of the International Environmental Modelling and Software Society: Modelling for Environment's Sake, iEMSs 2010
CountryCanada
CityOttawa, ON
Period10-07-0510-07-08

Fingerprint

Drought
Water Resources
Agriculture
Climate Change
Taiwan
Water resources
Climate change
Scenarios
Baseline
Irrigation
Rice
Climate
Adjustment
Projection
Model
Tend
Decrease

All Science Journal Classification (ASJC) codes

  • Software
  • Environmental Engineering
  • Modelling and Simulation

Cite this

Yu, P-S., Tseng, H. W., & Chen, S. T. (2010). The impact of climate change on agriculture water resources for paddy rice over southern Taiwan. In Modelling for Environment's Sake: Proceedings of the 5th Biennial Conference of the International Environmental Modelling and Software Society, iEMSs 2010 (pp. 1703-1709). (Modelling for Environment's Sake: Proceedings of the 5th Biennial Conference of the International Environmental Modelling and Software Society, iEMSs 2010; Vol. 2).
Yu, Pao-Shan ; Tseng, Hung Wei ; Chen, Shien Tsung. / The impact of climate change on agriculture water resources for paddy rice over southern Taiwan. Modelling for Environment's Sake: Proceedings of the 5th Biennial Conference of the International Environmental Modelling and Software Society, iEMSs 2010. 2010. pp. 1703-1709 (Modelling for Environment's Sake: Proceedings of the 5th Biennial Conference of the International Environmental Modelling and Software Society, iEMSs 2010).
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abstract = "This work aims to investigate the impacts of hydrologic drought on agricultural water resources under climate change scenarios. The study area is Tseng-Wen Reservoir basin in southern Taiwan, which receives temporally uneven precipitation. It is thus a basin prone to suffer from drought during dry season. General circulation models (GCMs) are the main tool to tackle climate change issues through the help of prescribed scenarios. This work used several approaches, including spatial downscaling, temporal downscaling and hydrologic model, to solve the coarse-resolution problem of GCMs and then to analyze the effect of climate change in the study area. The following are important findings: (1) According to future climate projections, droughts may become more frequent (hereafter referred to as scenario droughts), but their duration and magnitude may become more diverse than those of the baseline droughts. (2) The times of start and end of scenario droughts may occur earlier than those of baseline droughts. (3) Scenario low flow during the dry period tends to decrease in January and February, but to increase in March and April. (4) Moderate adjustment of irrigation period to adapt to climate change is suggested.",
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Yu, P-S, Tseng, HW & Chen, ST 2010, The impact of climate change on agriculture water resources for paddy rice over southern Taiwan. in Modelling for Environment's Sake: Proceedings of the 5th Biennial Conference of the International Environmental Modelling and Software Society, iEMSs 2010. Modelling for Environment's Sake: Proceedings of the 5th Biennial Conference of the International Environmental Modelling and Software Society, iEMSs 2010, vol. 2, pp. 1703-1709, 5th Biennial Conference of the International Environmental Modelling and Software Society: Modelling for Environment's Sake, iEMSs 2010, Ottawa, ON, Canada, 10-07-05.

The impact of climate change on agriculture water resources for paddy rice over southern Taiwan. / Yu, Pao-Shan; Tseng, Hung Wei; Chen, Shien Tsung.

Modelling for Environment's Sake: Proceedings of the 5th Biennial Conference of the International Environmental Modelling and Software Society, iEMSs 2010. 2010. p. 1703-1709 (Modelling for Environment's Sake: Proceedings of the 5th Biennial Conference of the International Environmental Modelling and Software Society, iEMSs 2010; Vol. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - This work aims to investigate the impacts of hydrologic drought on agricultural water resources under climate change scenarios. The study area is Tseng-Wen Reservoir basin in southern Taiwan, which receives temporally uneven precipitation. It is thus a basin prone to suffer from drought during dry season. General circulation models (GCMs) are the main tool to tackle climate change issues through the help of prescribed scenarios. This work used several approaches, including spatial downscaling, temporal downscaling and hydrologic model, to solve the coarse-resolution problem of GCMs and then to analyze the effect of climate change in the study area. The following are important findings: (1) According to future climate projections, droughts may become more frequent (hereafter referred to as scenario droughts), but their duration and magnitude may become more diverse than those of the baseline droughts. (2) The times of start and end of scenario droughts may occur earlier than those of baseline droughts. (3) Scenario low flow during the dry period tends to decrease in January and February, but to increase in March and April. (4) Moderate adjustment of irrigation period to adapt to climate change is suggested.

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Yu P-S, Tseng HW, Chen ST. The impact of climate change on agriculture water resources for paddy rice over southern Taiwan. In Modelling for Environment's Sake: Proceedings of the 5th Biennial Conference of the International Environmental Modelling and Software Society, iEMSs 2010. 2010. p. 1703-1709. (Modelling for Environment's Sake: Proceedings of the 5th Biennial Conference of the International Environmental Modelling and Software Society, iEMSs 2010).