Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (4): 69-75.doi: 10.11924/j.issn.1000-6850.casb2021-0228

Special Issue: 生物技术 农业气象 烟草种植与生产

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Prediction of the Disaster Risk of Overcast and Rainy Days on Flue-cured Tobacco Planting in Yunnan

HAN Min1(), YANG Pengwu2, HE Yuqin2, HU Xueqiong2, ZHU Yong2()   

  1. 1Yuanjiang Meteorological Bureau, Yuxi, Yunnan 653100
    2Yunnan Climate Center, Kunming 650034
  • Received:2021-03-08 Revised:2021-05-10 Online:2022-02-05 Published:2022-03-16
  • Contact: ZHU Yong E-mail:1574641338@qq.com;windzy78@163.com

Abstract:

To study the effects of future disaster risk changes of overcast and rainy days with ‘spatial and temporal dynamics’ on flue-cured tobacco planting in Yunnan, based on flue-cured tobacco planting suitability index and overcast and rainy grade index, we adopted the approaches of multivariable regression, interpolation and raster calculating in combination with the observed meteorological data from 1981 to 2010 and the RCPs emission scenario forecast results under global climate patterns HadGEM2-ES from 2021 to 2050. The results show that the planting pattern of flue-cured tobacco in Yunnan will be transformed as the weather changes in the future. The suitable areas will expand with the warming climate, while the disaster risk of overcast and rainy days will grow at the same time. The high-risk areas will be increased, while the low-risk areas and medium-risk areas will be narrowed. In the future, the low- risk areas will be transformed into a higher level, and disaster centers will expand northward and eastward. The risk of overcast and rainy days of flue-cured tobacco at all levels will be significantly different under different decadal periods and emission scenarios. The risk will change dramatically under the RCP8.5 scenario, while RCP2.6 and RCP4.5 scenarios will have similar risk changes. In the future, the disaster risk change of overcast and rainy days of flue-cured tobacco in Yunnan will show temporal and spatial increase and difference. To avoid meteorological disasters, agricultural infrastructure construction should be enhanced.

Key words: future climate change, emission scenario, flue-cured tobacco, overcast and rainy days, disaster risk, Yunnan

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