Study on drought indices and loss assessment of winter wheat in north China

Ronghua Liu; Zixi Zhu; Wensong Fang; Shuanghe Shen; Huailiang Chen; Youhe Wang; Yue Chang

doi:10.1117/12.615750

31 July 2005 Study on drought indicies and loss assessment of winter wheat in North China

Ronghua Liu, Zixi Zhu, Wensong Fang, Shuanghe Shen, Huailiang Chen, Youhe Wang, Yue Chang

Proceedings Volume 5890, Atmospheric and Environmental Remote Sensing Data Processing and Utilization: Numerical Atmospheric Prediction and Environmental Monitoring; 58901E (2005) https://doi.org/10.1117/12.615750
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

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.

Citation Download Citation

Ronghua Liu, Zixi Zhu, Wensong Fang, Shuanghe Shen, Huailiang Chen, Youhe Wang, and Yue Chang "Study on drought indicies and loss assessment of winter wheat in North China", Proc. SPIE 5890, Atmospheric and Environmental Remote Sensing Data Processing and Utilization: Numerical Atmospheric Prediction and Environmental Monitoring, 58901E (31 July 2005); https://doi.org/10.1117/12.615750

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