Projecting Climate Change Impacts Both On Rice Quality And Yield In Japan

Masashi Okada, Yousay Hayashi, Toshichika Iizumi, Masayuki Yokosawa

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

This study examined the impacts of climate change both on rice quality and yield using a climatologically empirical rice quality model together with a process-based rice growth model. The target area is Kyushu in the western part of Japan, where the decline in rice quality already occurs at the present time. After confirming the model reproducibility, we made simulations to project the changes of rice quality under climate change scenarios. All the projections suggested that the rice quality would significantly deteriorate. We analyzed the results by distinguishing the direct and indirect effects of climate based on simulations with changing weather data. It suggested that the indirect effect induced by the shift of the grain-filling period is relatively larger than the direct effect by temperature rise. We also examined the effects of adaptation measure shifting the date of transplanting on rice quality and yield. It is shown that rice quality is more sensitive to the shifting transplanting date than rice yield; consequently, shifting the transplanting date later might be an appropriate measure for the adaptation to climate change.

Original languageEnglish
Pages (from-to)285-295
Number of pages11
JournalJournal of Agricultural Meteorology
Volume67
Issue number4
DOIs
Publication statusPublished - 2011 Sep 1
Externally publishedYes

Fingerprint

rice
climate change
Japan
filling period
meteorological data
growth models
reproducibility
simulation
weather
climate
effect
temperature

Keywords

  • Adaptation
  • Quality
  • Sensitivity
  • Trade-off
  • Yield

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Atmospheric Science

Cite this

Projecting Climate Change Impacts Both On Rice Quality And Yield In Japan. / Okada, Masashi; Hayashi, Yousay; Iizumi, Toshichika; Yokosawa, Masayuki.

In: Journal of Agricultural Meteorology, Vol. 67, No. 4, 01.09.2011, p. 285-295.

Research output: Contribution to journalArticle

Okada, Masashi ; Hayashi, Yousay ; Iizumi, Toshichika ; Yokosawa, Masayuki. / Projecting Climate Change Impacts Both On Rice Quality And Yield In Japan. In: Journal of Agricultural Meteorology. 2011 ; Vol. 67, No. 4. pp. 285-295.
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