تقرير
Tree-ring-based drought variability in northern China over the past three centuries
| العنوان: | Tree-ring-based drought variability in northern China over the past three centuries |
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| المؤلفون: | Zeng Xueli, Liu Yu, Song Huiming, Li Qiang, Cai Qiufang, Fang Congxi, Sun Changfeng, Ren Meng |
| بيانات النشر: | SCIENCE PRESS |
| سنة النشر: | 2022 |
| المجموعة: | Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) / 中国科学院地球环境研究所机构知识库 |
| مصطلحات موضوعية: | tree-ring width, Mt, Lama, PDSI, East Asian summer monsoon, Asian polar vortex area index, ANNUAL PRECIPITATION, PDSI RECONSTRUCTION, INNER-MONGOLIA, RAINFALL, CLIMATE, SHIFT, Physical Geography, Geography, Physical |
| الوصف: | Droughts are the most frequent natural disaster in regions at the margins of the East Asian summer monsoon (EASM), which pose threats to agriculture, the economy, and human lives. However, the limitations of only approximately 60 years of meteorological observations hamper our understanding of the characteristics and mechanisms of local hydroclimate. Trees growing in the marginal region of the EASM are usually sensitive to moisture variations and have played important roles in past hydroclimatic reconstructions. Here, a 303-year tree-ring-width chronology of Pinus tabulaeformis from Mt. Lama, which is located in the junction of the Liaoning Province and Inner Mongolia, China, was used to reconstruct the May-August Palmer drought severity index (PDSI) in the marginal region of the EASM. The transfer function explains 48.0% (or 47.2% after adjusting for the loss of the degrees of freedom) of the variance over the calibration period from 1946 to 2012. A spatial correlation analysis demonstrates that our PDSI reconstruction can represent the drought variability on the northernmost margin of the EASM. The winter Asian polar vortex area index showed a delayed impact on the summer EASM precipitation in the following year. |
| نوع الوثيقة: | report |
| اللغة: | English |
| العلاقة: | JOURNAL OF GEOGRAPHICAL SCIENCES; http://ir.ieecas.cn/handle/361006/17478Test; http://ir.ieecas.cn/handle/361006/17479Test |
| DOI: | 10.1007/s11442-022-1943-3 |
| الإتاحة: | https://doi.org/10.1007/s11442-022-1943-3Test http://ir.ieecas.cn/handle/361006/17478Test http://ir.ieecas.cn/handle/361006/17479Test |
| رقم الانضمام: | edsbas.C9C3BA5B |
| قاعدة البيانات: | BASE |
| DOI: | 10.1007/s11442-022-1943-3 |
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