山东农业大学学报（自然科学版）Issue(1)：16-22,7.DOI:10.3969/j.issn.1000-2324.2015.01.004
基于SPI的烟台地区干旱特征分析
Analysis of Drought Characteristics in Yantai Distrcit Based on SPI
摘要
Abstract
Data at 11 observatory stations in Yantai for 30-yr (1981~2010) precipitation was utilized to obtain annual drought index and seasonal drought index in Yantai district based on standardization precipitation index (SPI). The characteristics of drought events in 30-yr period in Yantai have been analyzed based on three indices of drought events: drought frequency, drought station time ratio, drought intensity. The results showed that in the 30-yr period, light drought events dominate in Yantai, middle and heavy drought events were comparable. Drought frequency was gradually decreasing and drought intensity was gradually increasing. Spring and summer drought events were increasing, whereas Autumn and Winter drought events were decreasing. In the western and northern region, the drought events were more significant than those in the eastern and middle region. Compared with real drought events, annual SPI could describe long term drought event characteristics. However, it could not describe short term seasonal drought events. Although there did not happen heavy drought events in Yantai district, it was still necessary to pay attention to the drought events, especially heavy drought events.关键词
标准化降水指数/干旱指数/干旱发生频率/干旱站次比/干旱强度Key words
Standardization precipitation index/drought index/drought frequency/drought station time ratio/drought intensity分类
天文与地球科学引用本文复制引用
王冰,余锦华,程志攀,翟少婧..基于SPI的烟台地区干旱特征分析[J].山东农业大学学报（自然科学版）,2015,(1):16-22,7.基金项目
烟台市气象局2013年科学技术研究项目(YTQX2013005) （YTQX2013005）
