吕志强, 许新惠, 周星宇, 姜娜. 基于地理信息技术支持下的干旱趋势分析研究——以云南普洱市为例[J]. 云南大学学报(自然科学版), 2016, 38(3): 439-446. doi: 10.7540/j.ynu.20140710
引用本文: 吕志强, 许新惠, 周星宇, 姜娜. 基于地理信息技术支持下的干旱趋势分析研究——以云南普洱市为例[J]. 云南大学学报(自然科学版), 2016, 38(3): 439-446. doi: 10.7540/j.ynu.20140710
LYU Zhi-qiang, XU Xin-hui, ZHOU Xing-yu, JIANG Na. Analysis on the trend of drought under the support of geographic information technology—Taking Pu'er City in Yunnan Province as an example[J]. Journal of Yunnan University: Natural Sciences Edition, 2016, 38(3): 439-446. DOI: 10.7540/j.ynu.20140710
Citation: LYU Zhi-qiang, XU Xin-hui, ZHOU Xing-yu, JIANG Na. Analysis on the trend of drought under the support of geographic information technology—Taking Pu'er City in Yunnan Province as an example[J]. Journal of Yunnan University: Natural Sciences Edition, 2016, 38(3): 439-446. DOI: 10.7540/j.ynu.20140710

基于地理信息技术支持下的干旱趋势分析研究——以云南普洱市为例

Analysis on the trend of drought under the support of geographic information technology—Taking Pu'er City in Yunnan Province as an example

  • 摘要: 在地理信息技术支持下,结合云南省普洱市10个区县气象观测站1981—2010年逐月降水观测数据,运用Mann-Kendall 趋势检验、线性倾向估计、降水距平百分率等方法,对云南省普洱市气象干旱特征进行了分析.研究结果表明:普洱市总体降水量呈下降趋势,除春季降水量呈较小的上升外,夏、秋、冬3个季节均呈下降趋势,减少速度总体为10.286mm/a.四季中西南地区降水总体呈增加趋势,中部地区总体呈减少趋势,具有一定的区域特征.2009年干旱程度最为严重的景东县和镇沅县都处于气象干旱指标中的中度干旱,同时在降水量趋势值上表现为负值呈现出加重的趋势.

     

    Abstract: Under the support of geographic information technology,it is combined monthly observation data of 10 county meteorological observation stations in Pu'er City in 1981—2010,and the characteristics of meteorological drought in Pu'er City is analyzed using Mann Kendall trend test,linear trend estimation,precipitation anomaly percentage etc.The results show that the precipitation show a downward trend on the whole,in spring,precipitation showed a small rise,but it showed downward trend in summer,autumn and winter,the overall reducing speed is 10.286mm/a.Precipitation in southwest shows an increasing trend and the central region showed a decreasing trend,with certain regional characteristics.The most serious drought counties in 2009 in Jingdong and Zhengyuan are in moderate drought index,meanwhile the precipitation trend showed negative value.So the degree of drought in the two counties showed the increasing trend in the future.

     

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