| 赣江流域1966-2015年降水量多尺度时空变化特征分析 |
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| 引用本文： | 鲁向晖,张海娜,胡羊羊.赣江流域1966-2015年降水量多尺度时空变化特征分析[J].水土保持研究,2021(2):168-175. |
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| 作者姓名： | 鲁向晖 张海娜 胡羊羊 |
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| 作者单位： | 南昌工程学院江西省樟树繁育与开发利用工程研究中心;南昌工程学院水利与生态工程学院;南昌工程学院瑶湖学院 |
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| 基金项目： | 国家自然科学基金(51669015);江西水利科技计划项目(KT201717);江西省教育厅科技项目(GJJ190946,GJJ190977)。 |
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| 摘 要： | 为研究全球气候变化影响下的赣江流域降水量时空分布特征,基于赣江流域及其周边的27个气象站1966-2015年逐日降水量数据,采用Mann-kendall、累积距平法及Morlet小波分析等方法研究了不同时间尺度降水量变化特征。结果表明:赣江流域年、汛期、夏季和秋季降水量呈不显著的增加趋势(p>0.05),而春季和冬季呈不显著的减少趋势(p>0.05);不同时间尺度降水量均具有明显的阶段性特征,且进入21世纪00年代后降水量多为枯水阶段;赣江流域降水量变化主周期多在8~10 a,20~22 a,26~30 a。赣江流域全年和春季降水量呈南少北多的分布格局,汛期和夏季降水量空间分布较均匀,无明显的空间差异,秋季降水量呈南北两端少、中部相对较多的分布格局,而冬季降水量呈由北向南递减的变化趋势。
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| 关 键 词： | 降水量 时空分布 阶段性 周期 赣江流域 |
Spatiotemporal Variation Characteristics of Precipitation at Multi-scale in Ganjiang River Basin from 1966 to 2015 |
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| LU Xianghui,ZHANG Haina,HU Yangyang.Spatiotemporal Variation Characteristics of Precipitation at Multi-scale in Ganjiang River Basin from 1966 to 2015[J].Research of Soil and Water Conservation,2021(2):168-175. |
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| Authors: | LU Xianghui ZHANG Haina HU Yangyang |
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| Institution: | (Jiangxi Province Engineering Research Center of Seed-breeding and Utilization of Camphor Tree,Nanchang Institute of Technology,Nanchang 330099,China;College of Water and Ecology Engineering,Nanchang Institute of Technology,Nanchang 330099,China;Yaohu Honors College,Nanchang Institute of Technology,Nanchang 330099,China) |
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| Abstract: | In order to study the temporal and spatial distribution characteristics of precipitation in Ganjiang River Basin under the influence of global climate change,the spatiotemporal variation characteristics of precipitation in the Ganjiang River basin were investigated using mann-kendall,cumulative anomaly method and Morlet wavelet analysis based on the daily precipitation data of 27 meteorological stations within and around the basin.The results showed that the annual,flood season,summer and autumn precipitation in ganjiang river basin presented the insignificant increasing trend(p>0.05),and showed an insignificant decreasing trend in spring and winter(p>0.05);the precipitation of Ganjiang River Basin in different time scales had obvious stage characteristics,and the precipitation after the 2000′s was mostly in the dry stages;the main cycles of precipitation change in Ganjiang River Basin were usually 8~10 years,20~22 years,and 26~30 years;the annual and spring precipitation in Ganjiang River Basin was low in the southwest and high in the northeast;the distribution pattern of precipitation in autumn was high in the west and low in the east,while the change trend of precipitation in winter was decreasing from north to south;the distribution pattern of precipitation in flood and summer was uniform and had no distinct spatial difference. |
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| Keywords: | precipitation temporal and spatial variation stages period Ganjiang River |
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