信阳市水资源时空变化特征研究
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河南省水文水资源测报中心

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P343

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Spatial-Temporal variations of water resources in Xinyang City
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    摘要:

    采用线性回归、滑动T检验、Mann-Kendall检验法和Morlet小波分析法对信阳市1956—2020年降水量、地表水、地下水以及水资源总量的趋势性、突变性以及周期性进行分析。结果表明:(1)1956—2020年信阳市降水量、地下水、地表水、水资源总量总体呈不显著的减少趋势,但突变性和周期性有所差异;降水量在1970年和2017年发生突变,地表水和水资源总量突变点发生在2014年,三者的主导周期均为9a和23a;地下水未发生显著突变,主导周期为15~16a。(2)预计地表水的丰水期会持续到2028年左右;地下水的枯水期持续到2024年后会迎来8年左右的丰水期。(3)降水量呈自南向北递减的空间分布;水资源总量和地表水资源量则均呈现由西向东递增的空间分布特征;地下水资源量呈现由南部向北部递增的趋势。(4)地表水以及水资源总量受降水量的影响显著,地下水与降水量的相关系数最小,分析表明研究区地下水资源量稳定性强。研究结果可为信阳水资源合理配置以及可持续利用提供参考依据。

    Abstract:

    In this paper, linear regression, moving T test, Mann-Kendall test and Morlet wavelet analysis were used to analyze the trend, mutability and periodicity of precipitation, surface water, groundwater and total water resources in Xinyang City during 1956-2020. The results show that: (1) The precipitation, groundwater, surface water and water resources in Xinyang City during 1956-2020 show an insignificant decreasing trend, but the mutation and periodicity are different. The mutation point of precipitation occurred in 1970 and 2017, and the mutation point of total surface water and water resources occurred in 2014. The dominant periods of the above three are 9a and 23a. There was no significant mutation in groundwater, and the dominant period was 15~16a. (2) The wet period for surface water is expected to last until about 2028, while the dry period of groundwater is expected to last until 2024, followed by a wet period of about eight years. (3) The spatial distribution of precipitation decreased from south to north. The total water resources and surface water resources are increasing from west to east, while the groundwater resources are increasing from south to north. (4) Surface water and total water resources are significantly affected by precipitation, while the correlation coefficient between groundwater and precipitation is the least. The analysis shows that the groundwater resources in the study area are stable. The results can provide reference for rational allocation and sustainable utilization of water resources in Xinyang.

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  • 收稿日期:2023-06-14
  • 最后修改日期:2023-11-23
  • 录用日期:2023-11-24
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