Spatiotemporal Variations of Meteorological Droughts and the Assessments of Agricultural Drought Risk in a Typical Agricultural Province of China
文献类型：期刊论文
| 作者 | Guo, Mengjing3; Li, Jing3 ; Wang, Yongsheng1; Long, Qiubo4; Bai, Peng2
|
| 刊名 | ATMOSPHERE
 |
| 出版日期 | 2019-09-01 |
| 卷号 | 10期号:9页码:15 |
| 关键词 | SPEI meteorological drought drought evolution drought risk assessment |
| DOI | 10.3390/atmos10090542 |
| 通讯作者 | Li, Jing(lijing8615@163.com) |
| 英文摘要 | Drought is one of the most common natural disasters on a global scale and has a wide range of socioeconomic impacts. In this study, we analyzed the spatiotemporal variations of meteorological drought in a typical agricultural province of China (i.e., Shaanxi Province) based on the Standard Precipitation Evapotranspiration Index (SPEI). We also investigated the response of winter wheat and summer maize yields to drought by a correlation analysis between the detrended SPEI and the time series of yield anomaly during the crop growing season. Moreover, agricultural drought risks were assessed across the province using a conceptual risk assessment model that emphasizes the combined role of drought hazard and vulnerability. The results indicated that droughts have become more severe and frequent in the study area after 1995. The four typical timescales of SPEI showed a consistent decreasing trend during the period 1960-2016; the central plains of the province showed the most significant decreasing trend, where is the main producing area of the province's grain. Furthermore, the frequency and intensity of drought increased significantly after 1995; the most severe drought episodes occurred in 2015-2016. Our results also showed that the sensitivity of crop yield to drought varies with the timescales of droughts. Droughts at six-month timescales that occurred in March can explain the yield losses for winter wheat to the greatest extent, while the yield losses of summer maize are more sensitive to droughts at three-month timescales that occurred in August. The assessment agricultural drought risk showed that some areas in the north of the province are exposed to a higher risk of drought and other regions are dominated by low risk. |
| WOS关键词 | CLIMATE-CHANGE ; CROP YIELD ; INDEX ; PERFORMANCE ; IMPACT |
| 资助项目 | Natural Science Foundation of China[41601034] ; Natural Science Foundation of China[41807156] ; Natural Science Foundation of China[51979263] |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000489177300064 |
| 出版者 | MDPI |
| 资助机构 | Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/129891]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Li, Jing |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Reg Sustainable Dev Modeling, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 3.Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg, Xian 710048, Shaanxi, Peoples R China 4.Hunan Hydro & Power & Design Inst, Changsha 410007, Hunan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Mengjing,Li, Jing,Wang, Yongsheng,et al. Spatiotemporal Variations of Meteorological Droughts and the Assessments of Agricultural Drought Risk in a Typical Agricultural Province of China[J]. ATMOSPHERE,2019,10(9):15. |
| APA | Guo, Mengjing,Li, Jing,Wang, Yongsheng,Long, Qiubo,&Bai, Peng.(2019).Spatiotemporal Variations of Meteorological Droughts and the Assessments of Agricultural Drought Risk in a Typical Agricultural Province of China.ATMOSPHERE,10(9),15. |
| MLA | Guo, Mengjing,et al."Spatiotemporal Variations of Meteorological Droughts and the Assessments of Agricultural Drought Risk in a Typical Agricultural Province of China".ATMOSPHERE 10.9(2019):15. |
入库方式： OAI收割
来源：地理科学与资源研究所
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