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| DOI | 10.3390/w16020234 |
| Characteristics of the Spatial and Temporal Distribution of Drought in Northeast China, 1961-2020 | |
| 发表日期 | 2024 |
| EISSN | 2073-4441 |
| 起始页码 | 16 |
| 结束页码 | 2 |
| 卷号 | 16期号:2 |
| 英文摘要 | Under global climate warming, the global water cycle is further accelerating, the risk of drought is increasing, and the instability and sustainability of agricultural production are seriously threatened. Northeast China, as the granary of China, located in the mid-high latitudes of the Northern Hemisphere, is one of the regions strongly influenced by droughts. Thus, studying the spatial and temporal distribution of drought is helpful for the development of methods for forecasting potential drought hazards in Northeast China. This study used observed data from 86 meteorological stations in Northeast China from 1961 to 2020 to calculate the standardized precipitation evapotranspiration index (SPEI) at different time scales for the past 60 years and analyzed the spatial and temporal characteristics of drought in Northeast China based on the run theory and the Mann-Kendall test. The SPEI at the annual scale showed decreasing trends with no significant mutation point. Seasonally, there was a decreasing trend of the SPEI in summer and autumn and an increasing trend in spring and winter, which indicates that drought in Northeast China has decreased in winter and spring. The annual drought frequency ranged from 25.5% to 37.6%, and the spatial characteristics of the frequency of moderate drought, severe drought, and extreme drought, respectively, showed the following distribution patterns from the western region to the central region and then to the eastern region of Northeast China: high-low-high, low-high-low, and gradually decreasing. |
| 英文关键词 | droughts; run theory; spatial and temporal characteristics; Northeast China |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology ; Water Resources |
| WOS类目 | Environmental Sciences ; Water Resources |
| WOS记录号 | WOS:001151464900001 |
| 来源期刊 | WATER
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/298876 |
| 作者单位 | Liaoning University of Technology; Inner Mongolia Normal University; Inner Mongolia Normal University |
| 推荐引用方式 GB/T 7714 | . Characteristics of the Spatial and Temporal Distribution of Drought in Northeast China, 1961-2020[J],2024,16(2). |
| APA | (2024).Characteristics of the Spatial and Temporal Distribution of Drought in Northeast China, 1961-2020.WATER,16(2). |
| MLA | "Characteristics of the Spatial and Temporal Distribution of Drought in Northeast China, 1961-2020".WATER 16.2(2024). |
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