Assessment of drought occurrence in Bei-bu wheat districts, China between 1960 and 2012

Shiyan Zhai, Genxin Song, Xinyue Ye, Fanglin Yu, Nan He

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Bei-bu winter wheat region (BBWR) is located in the northern boundary of the winter wheat area in China. The ecological environment is relatively poor. Drought is a major natural hazard that harms winter wheat growth in this region. Based on the daily rainfall data recorded at 45 national meteorological stations within the BBWR between 1960 and 2012, we calculated the Standardized Precipitation Index (SPI), a measure of drought. We also addressed changes of drought occurrence across the BBWR using drought intensity, drought frequency and drought coverage. Results show that: (1) there were three drought periods, which occurred around 1966, 1973, and 2000 respectively. (2) From 1960 to 2012, whole drought or regional drought appeared in most years, except 1964, 1969, 1990 and 2003. In addition, drought index presented a slightly upward trend until 1999, when it started to present a downward trend. (3) Mild drought occurred more frequently than moderate drought and severe drought. In BBWR, mild drought occurred between 31.1% and 37.8%, while both moderate drought and severe drought occurred less than 13%. The frequency of occurrence of moderate drought and mild drought was both higher in the Jing-jin region, northwest of BBWR. In addition, the most serious severe drought appeared in Shanxi province.

Original languageEnglish (US)
Title of host publication2017 25th International Conference on Geoinformatics, GeoInformatics 2017
PublisherIEEE Computer Society
Volume2017-August
ISBN (Electronic)9781538622667
DOIs
StatePublished - Oct 30 2017
Externally publishedYes
Event25th International Conference on Geoinformatics, GeoInformatics 2017 - Buffalo, United States
Duration: Aug 2 2017Aug 4 2017

Conference

Conference25th International Conference on Geoinformatics, GeoInformatics 2017
Country/TerritoryUnited States
CityBuffalo
Period8/2/178/4/17

All Science Journal Classification (ASJC) codes

  • Software
  • Information Systems
  • Geography, Planning and Development
  • Computer Vision and Pattern Recognition
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Keywords

  • Bei-bu winter wheat region
  • Drought
  • Standardized precipitation index

Fingerprint

Dive into the research topics of 'Assessment of drought occurrence in Bei-bu wheat districts, China between 1960 and 2012'. Together they form a unique fingerprint.

Cite this