| 近30年雷州半岛季节性气象干旱时空特征 |
| |
| 引用本文： | 王壬,陈建耀,江涛,黎坤,赵新锋.近30年雷州半岛季节性气象干旱时空特征[J].水文,2017,37(3):36-41. |
| |
| 作者姓名： | 王壬 陈建耀 江涛 黎坤 赵新锋 |
| |
| 作者单位： | 1.中山大学地理科学与规划学院2.珠海市环保局水环境监测站 |
| |
| 基金项目： | 国家自然科学基金项目(41371055)；广东省水利科技创新项目(2012-01)；2015年度广州市水务科技项目(0835-1501224N0781)；国际第四纪研究联合会项目(INQUA-IFG1309F)；国际地质比较计划项目(IGCP-618)；中加学者交流项目CCSEP(2015-2016)； |
| |
| 摘 要： | 为进一步分析日尺度有效干旱指数(Effective Drought Index,EDI)的适应性,基于雷州半岛1984~2013年逐日降水资料进行验证,对比EDI和月尺度标准化降水指数(Standardized Precipitation Index,SPI)的干旱识别效果,进而结合线性趋势、M-K趋势检验和空间插值方法 ,分析雷州半岛季节性气象干旱时空特征。结果表明:(1)日尺度EDI和6个月时间尺度SPI(SPI-6)适用于雷州半岛的干旱监测,但EDI对严重干旱和突发干旱的识别比SPI-6更准确;(2)1984~2013年,雷州半岛秋冬季干旱频率和干旱站次比均呈减少趋势,但春夏季干旱频率和干旱站次比略有增加趋势;(3)春旱频率从南向北递增,重旱高频地区位于西北部,而夏季重旱高频区位于西部沿海;秋旱南部重于北部,高频中心在雷中西部沿海和曾家周边;冬季重旱以西部沿海、雷州市和徐闻县交界处频率最高。
|
| 关 键 词： | 季节性干旱 时空特征 有效干旱指数 标准化降水指数 雷州半岛 |
| 收稿时间： | 2016/3/20 0:00:00 |
Spatiotemporal Characteristics of Seasonal Meteorological Drought in Leizhou Peninsula during 1984-2013 |
| |
| WANG Ren,CHEN Jianyao,JIANG Tao,LI Kun,ZHAO Xinfeng.Spatiotemporal Characteristics of Seasonal Meteorological Drought in Leizhou Peninsula during 1984-2013[J].Hydrology,2017,37(3):36-41. |
| |
| Authors: | WANG Ren CHEN Jianyao JIANG Tao LI Kun ZHAO Xinfeng |
| |
| Institution: | 1. School of Geography and Planning, Sun Yat-Sen University, Guangzhou 510275, China; 2. Zhuhai Water Environment Monitoring Station of EPA , Zhuhai 519000, China |
| |
| Abstract: | Based on daily precipitation data sets of Leizhou Peninsula during 1984-2013, comparison between effective drought index (EDI) and standardized precipitation index (SPI) was performed in this paper. And then the spatiotemporal characteristics of drought events in different sea - sons. The results indicate that daily EDI and SPI for six-months time scale (SPI-6) are more suitable for drought monitoring in Leizhou Peninsula. Moreover, the EDI is more accurate than the SPI-6 in monitoring severe drought and short-term drought. The frequency of drought in autumn and winter show a decrease trend, while the frequency of moderate and severe drought in summer showna significant increase trend. Spatially, the fre - quency of drought in spring decrease from north to south, and the high-frequency areas of severe drought are located in northwest region, while the areas with high-frequency drought in summer are distributed in the central and west coastal areas. In autumn, the frequency of drought in south is generally higher than that in north. And the stations with severe droughts in winter are mainly in the west coastal areas and the junction region of Leizhou City and Xuwen County. |
| |
| Keywords: | seasonal drought spatio-temporal characteristics effective drought index standardized precipitation index Leizhou Peninsula |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《水文》浏览原始摘要信息 |
| 点击此处可从《水文》下载免费的PDF全文 |
|
