Climate change impacts on regional rice production in China

Zunfu Lv (), Yan Zhu, Xiaojun Liu, Hongbao Ye, Yongchao Tian and Feifei Li
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Zunfu Lv: Zhejiang A & F University
Yan Zhu: Nanjing Agricultural University
Xiaojun Liu: Nanjing Agricultural University
Hongbao Ye: Zhejiang Academy of Agricultural Sciences
Yongchao Tian: Nanjing Agricultural University
Feifei Li: Zhejiang A & F University

Climatic Change, 2018, vol. 147, issue 3, No 11, 523-537

Abstract: Abstract Rice (Oryza sativa L.) production is an important contributor to China’s food security. Climate change, and its impact on rice production, presents challenges in meeting China’s future rice production requirements. In this study, we conducted a comprehensive analysis of how rice yield responds to climate change under different scenarios and assessed the associated simulation uncertainties of various regional-scale climate models. Simulation was performed based on a regional calibrated crop model (CERES-Rice) and spatially matched climatic (from 17 global climate models), soil, management, and cultivar parameters. Grain-filling periods for early rice were shortened by 2–7 days in three time slices (2030s, 2050s, and 2070s), whereas grain-filling periods for late rice were shortened by 10–19 days in three time slices. Most of the negative effects of climate change were predicted to affect single-crop rice in central China. Average yields of single-crop rice treated with CO2 fertiliser in central China were predicted to be reduced by 10, 11, and 11% during the 2030s, 2050s, and 2070s, respectively, compared to the 2000s, if planting dates remained unchanged. If planting dates were optimised, single-crop rice yields were predicted to increase by 3, 7, and 11% during the 2030s, 2050s, and 2070s, respectively. In response to climate changes, early and single-crop rice should be planted earlier, and late rice planting should be delayed. The predicted net effect would be to prolong the grain-filling period and optimise rice yield.

Keywords: Climate change; Global climate model; Grid; Rice yield; Sowing date (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (10)

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DOI: 10.1007/s10584-018-2151-0

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