湖南省铁山水库流域降水演变规律
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湖南省重大水利科技计划项目“铁山水库饮用水水源地流域面源污染模拟预测与控制关键技术研究”(2015-257-30227)


Changing Characteristics of Precipitation in Tieshan Reservoir Basin of Hu'nan Province
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    摘要:

    [目的]分析铁山水库饮用水水源地的降水演变规律,为流域水资源利用以及铁山水库的调度运行提供依据。[方法]运用线性回归、滑动平均、Mann-Kendall检验、累积距平、滑动t检验和小波分析等方法,分析铁山水库饮用水水源地流域1968-2014年年降水、汛期降水和非汛期降水的演变规律。[结果]①47 a间年降水量、汛期降水量和非汛期降水量均呈现不明显的上升趋势。②年降水在1987和2003年发生了显著性突变,汛期降水在1992和2003年发生了显著性突变,非汛期降水未发生显著性突变。③年降水和汛期降水存在29 a左右的主周期,非汛期降水存在28 a左右的主周期,各时期的周期基本一致。[结论]铁山水库各时期的降水演变规律基本一致。

    Abstract:

    [Objective] This paper analyzed the changing characteristics of precipitation in the Tieshan reservoir basin, a drinking water source of Hu'nan Province, in order to provide basis for the utilization and schedule of water resources in the basin.[Methods] Methods including linear regression, moving average, Mann-Kendall test, accumulative anomalies analysis sliding t-test and wavelet analysis, were used to analyze the changing characteristics of annual precipitation, precipitation in the flood season and precipitation in the non-flood season during the period from 1968 to 2014.[Results] ① The annual precipitation, precipitation in the flood and non-flood seasons increased slightly over the past 47 years. ② The annual precipitation showed abrupt change in 1987 and 2003, while the precipitation in the flood season showed abrupt change in 1992 and 2003. There was no abrupt precipitation change in the non-flood season. ③ Annual precipitation and precipitation in the flood season had a dominant period of about 29 years, and the precipitation in non-flood season had a dominant period of about 28 years. Basically, the periods for all the precipitations were the same.[Conclusion] The changing characteristics of the annual precipitation, precipitation in the flood and non-flood season were basically consistent with each other in Tieshan reservoir.

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蔡锦文,胡国华,顾庆福.湖南省铁山水库流域降水演变规律[J].水土保持通报,2018,38(3):324-327,344

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  • 收稿日期:2017-10-19
  • 最后修改日期:2017-12-04
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  • 在线发布日期: 2018-07-06
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