| Risk assessment of spring maize drought disaster in Northern China |
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| DOI：10.7606/j.issn.1000-7601.2018.02.37 |
| Key Words: Northern China spring maize yield reduction rates drought disaster risk assessment |
| Author Name | Affiliation | | WANG You-heng | Northwest Regional Climate Center, Lanzhou, Gansu 730020, China | | ZHANG Cun-jie | National Climate Center, CMA, Beijing 100081, China | | DUAN Ju-qi | National Climate Center, CMA, Beijing 100081, China | | WANG Sheng | Anhui Climate Center, Anhui Meteorological Bureau, Hefei, Anhui 230031, China |
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| Abstract: |
| Drought risk assessment is the necessary way to implement drought risk management and reduce the losses and impacts of drought disaster. Moreover, the key problem of drought risk assessment is how to reveal the characteristics of risk factors and their interactions among each other. This article assessed and zoned drought risk for spring maize cultivated in the Northern China, using the data of yield of spring maize, meteorological data, terrain data, land use data and other relevant data. Based on natural disaster risk theory, the assessing indices and models of drought risk were established. According to the exposure degree of hazard-bearing bodies and capability of disaster prevention, the regional division of drought hazard risk was conducted based on GIS. The results showed that the areas with high and sub-high drought risk included central Inner Mongolia, Ningxia, Gansu, western of Liaoning and part of Xinjiang, with the value of above 0.73. The lower risk area was distributed in the southwestern of Heilongjiang, central Jilin, northern of Liaoning, south of Hebei and central Shanxi, with the value of below 0.72. This study is helpful to recognize the relationships among the factors of risk and provide science gist to develop risk management of drought disaster of spring maize in Northern China. |
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