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Wenxin Zhang

Researcher

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Different types of meteorological drought and their impact on agriculture in Central China

Author

  • Huaiwei Sun
  • Xunlai Sun
  • Jianing Chen
  • Xiaoya Deng
  • Yong Yang
  • Hui Qin
  • Fulong Chen
  • Wenxin Zhang

Summary, in English

Challenges in drought monitoring hinder social development. In this study, a robust drought monitoring framework composed of ten indicators was established based on the standard precipitation actual evapotranspiration (SPAEI) index calculated using the maximum entropy production (MEP) model. Additionally, the relationship between meteorological drought and agricultural development was analyzed. The results indicated that the seasonal SPAEI performed better than the standardized precipitation evapotranspiration index (SPEI) in terms of drought area, vegetation drought, and drought identification in Central China. The annual drought duration was between 3.4 and 4.5 months, and the annual drought frequency ranged from 1.1 to 1.9 times per year. The main drought pattern was divided into persistent light drought and short-term severe drought, with the latter dominating crop yields in Central China. Although persistent light drought contributes more to drought, short-term severe drought has a greater impact on crop yields. Thoroughly investigating regional drought patterns and assessing their impacts on agriculture will contribute to a better understanding of drought characteristics and provide valuable guidance for regional agricultural water resource allocation and management.

Department/s

  • BECC: Biodiversity and Ecosystem services in a Changing Climate
  • Dept of Physical Geography and Ecosystem Science
  • MERGE: ModElling the Regional and Global Earth system

Publishing year

2023-12

Language

English

Publication/Series

Journal of Hydrology

Volume

627

Document type

Journal article

Publisher

Elsevier

Topic

  • Earth and Related Environmental Sciences

Keywords

  • Agricultural impact
  • Drought characteristics
  • Drought indicators
  • Drought patterns
  • The run theory

Status

Published

ISBN/ISSN/Other

  • ISSN: 0022-1694