| Characteristics of seasonal drought and integrated drought-preventing techniques in South Shanxi |
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| DOI：10.7606/j.issn.1000-7601.2016.04.42 |
| Key Words: seasonal drought standardized precipitation index (SPI) drought intensity integrated drought-preventing techniques |
| Author Name | Affiliation | | LIANG Zhe-jun | Cotton Research Institute, Shanxi Academy of Agricultural Sciences, Yuncheng Shanxi 044000, China | | WANG Yu-xiang | Cotton Research Institute, Shanxi Academy of Agricultural Sciences, Yuncheng Shanxi 044000, China | | DONG Peng | Cotton Research Institute, Shanxi Academy of Agricultural Sciences, Yuncheng Shanxi 044000, China | | LIU Bu-chun | Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing, 100081, China | | ZHANG Dong-mei | Cotton Research Institute, Shanxi Academy of Agricultural Sciences, Yuncheng Shanxi 044000, China | | LIU Yuan | Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing, 100081, China | | YANG Yin-bin | Cotton Research Institute, Shanxi Academy of Agricultural Sciences, Yuncheng Shanxi 044000, China | | GAO Lei | Cotton Research Institute, Shanxi Academy of Agricultural Sciences, Yuncheng Shanxi 044000, China | | NAN Xue-qin | Cotton Research Institute, Shanxi Academy of Agricultural Sciences, Yuncheng Shanxi 044000, China | | QI Hong-li | Cotton Research Institute, Shanxi Academy of Agricultural Sciences, Yuncheng Shanxi 044000, China |
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| Abstract: |
| The standardized precipitation index (SPI) was used to calculate monthly drought indices in the recent 49 yrs (from 1958—2007) with precipitation date from meteorological station in Yuncheng district Shanxi Province. Annual and seasonal drought frequency and intensity in southern Shanxi were analyzed with the SPI. The results showed that the drought frequency and drought intensity characteristics varied annually. Drought frequency showed an increasing trend, but drought intensity showed decreasing trends after 1990s. Drought in spring and summer was frequent, but it was not common in autumn and winter. Spring (March to May) and midsummer (July～August) drought can be relieved with integrated drought-preventing techniques, due to its predictability. |
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