The response of agricultural drought to meteorological drought and the influencing factors: A case study in the Wei River Basin, China
文献类型：SCI/SSCI论文
| 作者 | Huang S. Z.; Huang, Q.; Chang, J. X.; Leng, G. Y.; Xing, L. |
| 发表日期 | 2015 |
| 关键词 | Agricultural drought Meteorological drought The heuristic segmentation method Drought propagation The Budyko hypothesis The Wei River Basin severity index precipitation climate trends |
| 英文摘要 | It is of importance to investigate the response of agricultural drought to meteorological drought and its influencing factors, which could help better understand drought evolution mechanisms and facilitate agricultural drought monitoring and predictions. As a case study in the Wei River Basin (WRB), China, the heuristic segmentation method was first applied to identify change points of long-term hydrological and metrological conditions for the period of 1960-2007. Then the cross wavelet analysis was utilized to reveal the detailed links between agricultural drought (based on Palmer Drought Severity Index (PDSI)) and meteorological drought (based on Standardized Precipitation Index (SPI)) at the seasonal time scale. The controlling factors governing the agricultural response were then explored through quantitatively examining the corresponding large-scale atmospheric conditions and local-scale land surface characteristics. Results indicate that: (1) the variations of the lag time of agricultural drought in response to meteorological drought is large at the seasonal scale, characterized by fast response in summer and relatively slow response in autumn, and the contrasting response in the time lag is mainly due to the buffering effects of soils; (2) the variations of Arctic Oscillation (AO) was found to have large effects on the lag time, with both positive and negative effects; (3) a negative correlation between the lag time and the parameter w in the Fu' equation within the Budyko framework was found, implying the potential effects of vegetation cover on the drought propagation from meteorological drought to agricultural drought in the WRB. (C) 2015 Elsevier B.V. All rights reserved. |
| 出处 | Agricultural Water Management |
| 卷 | 159 |
| 页 | 45-54 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0378-3774 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/38663]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Huang S. Z.,Huang, Q.,Chang, J. X.,et al. The response of agricultural drought to meteorological drought and the influencing factors: A case study in the Wei River Basin, China. 2015. |
入库方式： OAI收割
来源：地理科学与资源研究所
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