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Proceedings Paper

Study on drought indicies and loss assessment of winter wheat in North China
Author(s): Ronghua Liu; Zixi Zhu; Wensong Fang; Shuanghe Shen; Huailiang Chen; Youhe Wang; Yue Chang
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Paper Abstract

Drought is a principal agrometeorological disaster to winter wheat zones in North China. From the correlation of wheat yield to rainfall the drought indices are determined that correspond to varying levels of severities on an agricultural basis. In wheat growing season, when rainfall displays its negative anomalies of <15, 15-35, 36-55 and <55%, there occurs a slight, moderate, heavy and extreme drought, leading to yield drop by <10, 10-20, 21-30 and <30%, respectively. The economic loss consists of yield reduction and drought-fighting input like irrigation. A drought-caused loss model is presented from historical meteorological and wheat yield datasets, with which to make the distribution of economic losses in the last 30 years over the province of Henan. Evidence suggests that in years of heavy droughts the loss was between 450 to 675 (<250) RMB yuans per hectare in the NE (west − SW) segment of the province.

Paper Details

Date Published: 31 July 2005
PDF: 8 pages
Proc. SPIE 5890, Atmospheric and Environmental Remote Sensing Data Processing and Utilization: Numerical Atmospheric Prediction and Environmental Monitoring, 58901E (31 July 2005); doi: 10.1117/12.615750
Show Author Affiliations
Ronghua Liu, Nanjing Univ. of Information Science and Technology (China)
Henan Institute of Meteorological Sciences (China)
Zixi Zhu, Henan Institute of Meteorological Sciences (China)
Wensong Fang, Nanjing Univ. of Information Science and Technology (China)
Henan Institute of Meteorological Sciences (China)
Shuanghe Shen, Nanjing Univ. of Information Science and Technology (China)
Huailiang Chen, Nanjing Univ. of Information Science and Technology (China)
Henan Institute of Meteorological Sciences (China)
Youhe Wang, Henan Institute of Meteorological Sciences (China)
Yue Chang, Meteorological Bureau of Guangzhou (China)


Published in SPIE Proceedings Vol. 5890:
Atmospheric and Environmental Remote Sensing Data Processing and Utilization: Numerical Atmospheric Prediction and Environmental Monitoring
Hung-Lung Allen Huang; Hal J. Bloom; Xiaofeng Xu; Gerald J. Dittberner, Editor(s)

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