Study on Temporal and Spatial Evolution of Extreme Precipitation in Niululing Reservoir Basin of Hainan Province
According to the precipitation data of 11 rainfall stations from 1979 to 2020,the Mann-Kendall (MK) trend test,moving t-test,and wavelet analysis were used to analyze the spatial distribution,trend,abrupt changes,and periodicity of eight extreme precipitation indicators in Niululing Reservoir Basin....
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Editorial Office of Pearl River
2023-01-01
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| Series: | Renmin Zhujiang |
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| Online Access: | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2023.06.004 |
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| author | XIAO Jing MO Shuping LIN Youwen XIE Weining |
| author_facet | XIAO Jing MO Shuping LIN Youwen XIE Weining |
| author_sort | XIAO Jing |
| collection | DOAJ |
| description | According to the precipitation data of 11 rainfall stations from 1979 to 2020,the Mann-Kendall (MK) trend test,moving t-test,and wavelet analysis were used to analyze the spatial distribution,trend,abrupt changes,and periodicity of eight extreme precipitation indicators in Niululing Reservoir Basin.The results show that:①PRCPTOT,SDII,R50,and R100 in the basin gradually increase from upstream to downstream,and the spatial distribution of other indicators has no significant regularity.②The eight extreme precipitation indicators diverge in trend and fail the MK test.The PRCPTOT,CWD,R50,and R99PTOT show an increasing trend,while the other indicators show a decreasing trend.③The PRCPTOT,SDII,R50,and R100 in the basin had abrupt changes in 2008,and CWD,Rx1day,and Rx3day had abrupt changes in 1999,1998,and 2006,respectively.R99PTOT underwent abrupt changes in 1998 and 2015.④There are two or three periodic signals in the eight extreme precipitation indicators in the basin.Except R100 and R99PTOT,the average periods of the first and second periods of the other six extreme precipitation indicators are 19 a and 14 a,and those of R100 and R99PTOT are 10 a and 19 a. |
| format | Article |
| id | doaj-art-a9b74a593cf14a8e83e35d901c6b559d |
| institution | Kabale University |
| issn | 1001-9235 |
| language | zho |
| publishDate | 2023-01-01 |
| publisher | Editorial Office of Pearl River |
| record_format | Article |
| series | Renmin Zhujiang |
| spelling | doaj-art-a9b74a593cf14a8e83e35d901c6b559d2025-01-15T02:22:41ZzhoEditorial Office of Pearl RiverRenmin Zhujiang1001-92352023-01-014447639918Study on Temporal and Spatial Evolution of Extreme Precipitation in Niululing Reservoir Basin of Hainan ProvinceXIAO JingMO ShupingLIN YouwenXIE WeiningAccording to the precipitation data of 11 rainfall stations from 1979 to 2020,the Mann-Kendall (MK) trend test,moving t-test,and wavelet analysis were used to analyze the spatial distribution,trend,abrupt changes,and periodicity of eight extreme precipitation indicators in Niululing Reservoir Basin.The results show that:①PRCPTOT,SDII,R50,and R100 in the basin gradually increase from upstream to downstream,and the spatial distribution of other indicators has no significant regularity.②The eight extreme precipitation indicators diverge in trend and fail the MK test.The PRCPTOT,CWD,R50,and R99PTOT show an increasing trend,while the other indicators show a decreasing trend.③The PRCPTOT,SDII,R50,and R100 in the basin had abrupt changes in 2008,and CWD,Rx1day,and Rx3day had abrupt changes in 1999,1998,and 2006,respectively.R99PTOT underwent abrupt changes in 1998 and 2015.④There are two or three periodic signals in the eight extreme precipitation indicators in the basin.Except R100 and R99PTOT,the average periods of the first and second periods of the other six extreme precipitation indicators are 19 a and 14 a,and those of R100 and R99PTOT are 10 a and 19 a.http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2023.06.004precipitationMK testmoving-testwavelet analysisNiululing Reservoir Basin |
| spellingShingle | XIAO Jing MO Shuping LIN Youwen XIE Weining Study on Temporal and Spatial Evolution of Extreme Precipitation in Niululing Reservoir Basin of Hainan Province Renmin Zhujiang precipitation MK test moving -test wavelet analysis Niululing Reservoir Basin |
| title | Study on Temporal and Spatial Evolution of Extreme Precipitation in Niululing Reservoir Basin of Hainan Province |
| title_full | Study on Temporal and Spatial Evolution of Extreme Precipitation in Niululing Reservoir Basin of Hainan Province |
| title_fullStr | Study on Temporal and Spatial Evolution of Extreme Precipitation in Niululing Reservoir Basin of Hainan Province |
| title_full_unstemmed | Study on Temporal and Spatial Evolution of Extreme Precipitation in Niululing Reservoir Basin of Hainan Province |
| title_short | Study on Temporal and Spatial Evolution of Extreme Precipitation in Niululing Reservoir Basin of Hainan Province |
| title_sort | study on temporal and spatial evolution of extreme precipitation in niululing reservoir basin of hainan province |
| topic | precipitation MK test moving -test wavelet analysis Niululing Reservoir Basin |
| url | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2023.06.004 |
| work_keys_str_mv | AT xiaojing studyontemporalandspatialevolutionofextremeprecipitationinniululingreservoirbasinofhainanprovince AT moshuping studyontemporalandspatialevolutionofextremeprecipitationinniululingreservoirbasinofhainanprovince AT linyouwen studyontemporalandspatialevolutionofextremeprecipitationinniululingreservoirbasinofhainanprovince AT xieweining studyontemporalandspatialevolutionofextremeprecipitationinniululingreservoirbasinofhainanprovince |