The implications of climate change and adjusting cropping schedule on irrigation management

Chia Chi Ma, Ray Shyan Wu

Research output: Contribution to journalArticlepeer-review

Abstract

The agricultural water requirement was different from year to year depending on the weather scenarios, temperature and rainfall mainly in the cultivation period. The estimating of the agricultural water requirement was depending on the historical meteorological data for a long time. In this study, we estimated the agricultural water requirement with two issues of climate change and adjusting the farming schedule in order to manage the agricultural water scientifically. We quoted the data of near future (2020~2039) of temperature and rainfall simulated by Taiwan Climate Change Projection and Information Platform (TCCIP). We estimated the irrigation water requirement of Taoyuan Irrigation Association and Shihmen Irrigation Association with the CROPWAT model developed by Food and Agriculture Organization of the United Nations, to find the difference of irrigation water requirement between irrigation plan and the simulated results of CROPWAT model. The results showed the CROPWAT model was suitable to estimate the agricultural water requirement. We then discussed the impacts of climate change and adjusting the farming schedule on the irrigation water requirement and agricultural water management. The results indicated that adjusting the farming schedule was decreasing the water requirement in dry season, and the decreasing water requirement was helpful for the water allocation of the Shihmen Reservoir.

Original languageEnglish
Pages (from-to)1-14
Number of pages14
JournalTaiwan Water Conservancy
Volume63
Issue number3
StatePublished - 2015

Keywords

  • Climate change
  • CROPWAT model
  • Farming schedule

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