基于标准化降水蒸散指数的陕西省近50 a干旱特征分析
收稿日期: 2013-04-15
修回日期: 2013-09-27
网络出版日期: 2014-04-20
基金资助
国家自然科学基金资助项目（40961038）；生态经济学省级重点学科（5002-021）；西北师范大学知识与科技创新工程项目（NWNU-KJCXGC-03-06）。
Analysis of Drought Characteristics of Shaanxi Province in Recent 50 Years Based on Standardized Precipitation Evapotranspiration Index
Received date: 2013-04-15
Revised date: 2013-09-27
Online published: 2014-04-20
基于陕西省18 个气象站点1961—2010 年实测气象资料，利用标准化降水蒸散指数(SPEI)，通过计算各站历年逐月的SPEI 指数值，统计近50 a 各站点出现的干旱过程，分析了陕西省历年、历年各季及月尺度上的干旱发生频率、覆盖面积和干旱发生强度，揭示了陕西省干旱发生的时空和强度演变特征。研究结果表明，近50 a 来陕西省干旱发生频率呈明显的增长趋势，尤其是1990 年以来的近20 a；陕西省在年、春、夏、秋、冬及月尺度上均有干旱发生。其中，秋季干旱最为严重，春季次之。在年代际变化方面，全省以20 世纪90 年代干旱最为严重，2000 年以来的干旱次之；干旱出现既有全省性的大范围干旱，也有区域性的局部干旱，分布极不均匀，总体分布特征是北多南少；干旱发生强度分布呈现出关中最强、陕南次之、陕北最弱的特点。
周丹, 张勃, 任培贵, 张春玲, 杨尚武, 季定民 . 基于标准化降水蒸散指数的陕西省近50 a干旱特征分析[J]. 自然资源学报, 2014 , 29(4) : 677 -688 . DOI: 10.11849/zrzyxb.2014.04.012
Drought disaster is one of the main natural disasters in Shaanxi Province, suffering from it often "nine out of ten years". It impacts the people's daily life and social production to different extent. In this paper, the observed meteorological data of 18 meteorological stations from 1961 to 2010 in Shaanxi Province were collected and the standardized precipitation evapotranspiration index (SPEI) was used. Based on the monthly SPEI values of each station in recent 50 years, the drought processes of each station were confirmed one by one and the occurrence frequencies, scopes and severities of the meteorological droughts were computed and the annual, seasonal and monthly drought occurrence frequency, coverage and intensity over years were analyzed, and the spatial and temporal evolution and the intensity of drought occurrence of the province were revealed. Research results show that there was an obviously growing trend in frequency of drought in recent 50 years, especially in recent 20 years since 1990; drought occurred without exception in the annual, spring, summer, autumn, winter and monthly scales. Among them, the most serious drought occurred in autumn and spring. In decadal variability, the province witnessed the worst drought in the 1990s, next since the year 2000; drought in Shaanxi was either widespread throughout the province or locally, with quite uneven distribution regionally, the overall distribution characteristics are more in the north and less in the south; the strongest drought distribution intensity presented in Guanzhong of Shaanxi, followed by southern Shaanxi and northern Shaanxi is the weakest.
[1] IPCC. Emissions Scenarios: A Special Report of Working Group III of the Intergovernmental Panels on Climate Change [M]. Cambridge Press, 2000.
[2] 水利部应对气候变化研究中心. 气候变化权威报告——IPCC报告[J]. 中国水利, 2008(2): 38-40.
[3] 王劲松, 郭江勇, 周跃武, 等. 干旱指标研究的进展与展望[J]. 干旱区地理, 2007, 30(1): 61-67.
[4] 包云轩, 孟翠丽, 申双和, 等. 基于CI 指数的江苏省近50年干旱时空分布规律[J]. 地理学报, 2011, 66(5): 599-608.
[5] 曹永强, 路璐, 张兰霞, 等. 基于Z指数的辽宁省气象干旱时空特性分析[J]. 资源科学, 2012, 34(8): 1518-1525.
[6] 翟禄新, 冯起. 基于SPI 的西北地区气候干湿变化[J]. 自然资源学报, 2011, 26(5): 847-857.
[7] Dubrovsky M, Svoboda M D, Trnka M J, et al. Application of relative drought indices in assessing climate-change impacts on drought conditions in Czechia [J]. Theoretical and Applied Climatology, 2009, 96(1/2):155-171.
[8] 李伟光, 陈汇林, 朱乃海, 等. 标准化降水指数在海南岛干旱监测中的应用分析[J]. 中国生态农业学报, 2009, 17 (1): 178-182.
[9] Vicente-Serrano S M, Beguería S, López-Moreno J I. A multi-scalar drought index sensitive to global warming: The standardized precipitation evapotranspiration index [J]. Journal of Climate, 2010, 23: 1696-1718.
[10] Vicente-Serrano S M, López-Moreno J I, Lorenzo-Lacruz J, et al. The NAO impact on droughts in the mediterranean region [J]. Advances in Global Change Research, 2011, 46: 23-40.
[11] Vicente-Serrano S M, Beguería S, López-Moreno J I, et al. A new global 0.5° gridded dataset (1901－2006) of a multiscalar drought index: Comparison with current drought index datasets based on the palmer drought severity index [J]. Journal of Hydrometeorology, 2010, 11: 1033-1043.
[12] Jaranilla-Sanchez P A, Wang L, Koike T. Modeling the hydrologic responses of the Pampanga River basin, Philippines: A quantitative approach for identifying droughts [J]. Water Resources Research, 2011, 47, W03514, doi: 10.1029/2010WR009702.
[13] 李伟光, 易雪, 侯美亭, 等. 基于标准化降水蒸散指数的中国干旱趋势研究[J]. 中国生态农业学报, 2012, 20(5): 643-649.
[14] 王文举, 崔鹏, 刘敏, 等. 近50 年湖北省多时间尺度干旱演变特征[J]. 中国农学通报, 2012, 28(29): 279-284.
[15] 苏宏新, 李广起. 基于SPEI的北京低频干旱与气候指数关系[J]. 生态学报, 2012, 32(17): 5467-5475.
[16] 秦鹏程, 姚凤梅, 张佳华, 等. 基于SPEI 指数的近50 年东北玉米生长季干旱演变特征[C]// 第28 届中国气象学会 年会——S11气象与现代农业. 2011.
[17] 李伟光, 侯美亭, 陈汇林, 等. 基于标准化降水蒸散指数的华南干旱趋势研究[J]. 自然灾害学报, 2012, 21(4): 84-90.
[18] 张调风, 张勃, 王小敏, 等. 基于综合气象干旱指数（CI） 的干旱时空动态格局分析——以甘肃省黄土高原区为 例[J]. 生态环境学报, 2012, 21(4): 13-20.
[19] 邹旭恺, 任国玉, 张强. 基于综合气象干旱指数的中国干旱变化趋势研究[J]. 气候与环境研究, 2010, 15(4): 371-378.
[20] 肖军, 赵景波. 陕西省近54 年农业干旱灾害特征研究[J]. 干旱区资源与环境, 2006, 20(5): 201-204.
[21] 杜佳, 宋令勇, 何兴军. 陕西省降水时空分布与变化特征分析[J]. 地下水, 2012, 34(6): 128-131.
[22] 李平, 侯明全, 董长林. 陕西省干旱及其环流特征[J]. 气象, 1997, 23(4): 39-42.
[23] 张宏平, 徐小红. 厄尔尼诺事件与陕西夏季降水和历史旱涝[J]. 陕西气象, 1997(1): 18-21.
[24] 乔丽, 程恺, 吴林荣, 等. 近30 年陕西省气象干旱灾害时空分布特征[J]. 水土保持通报, 2012, 32(1): 253-256.
[25] 刘小艳. 陕西省干旱灾害风险评估及区划[D]. 西安: 陕西师范大学, 2010.
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