Climate Change Data Portal
| DOI | 10.3390/w12082097 |
| Spatiotemporal Variations in Drought and Wetness from 1965 to 2017 in China | |
| Zeng, Zhaoqi; Wu, Wenxiang; Li, Yamei; Zhou, Yang; Zhang, Zhengtao; Zhang, Shuilong; Guo, Yahui; Huang, Han; Li, Zhaolei | |
| 通讯作者 | Wu, WX (通讯作者) |
| 发表日期 | 2020 |
| EISSN | 2073-4441 |
| 卷号 | 12期号:8 |
| 英文摘要 | Drought and extreme precipitation events can have major environmental and socioeconomic impacts. Yet, how drought and wetness are changing in China in the context of climate change is still under debate. Here, the standardized precipitation evapotranspiration index (SPEI) was calculated based on high-quality and more densely distributed daily meteorological observation data from 655 stations across China during the period of 1965-2017. National and regional trends in drought and wetness and their various characteristics, including intensity, duration, frequency, and percentage of area affected, were investigated at multiple timescales. We found that (1) China as a whole has undergone a significant (p< 0.01, trend significant at the level of 0.01) wetting trend, with an annual SPEI increase of 0.5 per decade from 1965 to 2017. A seasonal wetting trend was also observed, with summer being particularly significant (p< 0.01). (2) Regionally, each subregion also showed a wetting trend during the study period except for southwest China, and these wetting trends were significant in the western region of northwest China (p< 0.05, trend significant at the level of 0.05), the Tibetan Plateau (p< 0.05), and eastern China (p= 0.06). (3) Decadal trends in drought and wetness intensity, frequency, duration, and affected areas indicated that the drought events also became more severe and more frequent in the last two decades, and the areas showing drying trends were mainly located in southwest China (especially for the autumn drought) and the southwestern parts of eastern northwest China (spring drought). Our results highlight the fact that although a wetting trend was observed in most regions of China, the frequent occurrence of severe drought in southwest China and the southwestern parts of eastern northwest China still present a considerable threat to both the environment and society. Therefore, how to effectively coordinate the allocation of regional water resources to cope with drought risk under future climate change will be particularly important. |
| 关键词 | CLIMATE-CHANGEREFERENCE EVAPOTRANSPIRATIONPAN EVAPORATIONLOESS PLATEAUPRECIPITATIONINDEXPATTERNSARIDITYTRENDENSO |
| 英文关键词 | China; standardized precipitation evapotranspiration index; drought; wetness; trend |
| 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:000564850200001 |
| 来源期刊 | WATER
 |
| 来源机构 | 中国科学院青藏高原研究所 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/260019 |
| 推荐引用方式 GB/T 7714 | Zeng, Zhaoqi,Wu, Wenxiang,Li, Yamei,et al. Spatiotemporal Variations in Drought and Wetness from 1965 to 2017 in China[J]. 中国科学院青藏高原研究所,2020,12(8). |
| APA | Zeng, Zhaoqi.,Wu, Wenxiang.,Li, Yamei.,Zhou, Yang.,Zhang, Zhengtao.,...&Li, Zhaolei.(2020).Spatiotemporal Variations in Drought and Wetness from 1965 to 2017 in China.WATER,12(8). |
| MLA | Zeng, Zhaoqi,et al."Spatiotemporal Variations in Drought and Wetness from 1965 to 2017 in China".WATER 12.8(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
