近50年來淮河蚌埠以上流域降水時(shí)空變化特征分析
發(fā)布時(shí)間：2018-11-26 18:45
【摘要】：利用1956-2010年淮河蚌埠以上流域內(nèi)112個(gè)雨量站的逐日降水資料,采用Mann-Kendall趨勢分析和小波分析方法分析了蚌埠以上流域三級(jí)水資源分區(qū)近50 a降水的時(shí)空分布特征。結(jié)果表明:(1)蚌埠以上多年平均降雨存在北部低,南部高的空間分布不均勻性,4個(gè)分區(qū)中除王蚌區(qū)間南岸降雨有遞增趨勢外其他均為遞減趨勢,整個(gè)蚌埠以上降雨有遞增趨勢。(2)從時(shí)間上看,MK檢驗(yàn)顯示王家壩以上北岸降雨有顯著遞減趨勢,王蚌區(qū)間南岸降雨有較顯著遞增趨勢,Mann-Kendall趨勢檢驗(yàn)UF曲線顯示王蚌區(qū)間南岸變化趨勢在整個(gè)研究時(shí)間段不顯著,2003年突變降雨對(duì)統(tǒng)計(jì)結(jié)果影響較大。(3)蚌埠以上研究區(qū)域及分區(qū)降雨有不同的周期,但有共同的6 a左右的振蕩周期。整個(gè)研究區(qū)域降雨變化特征受分區(qū)影響。
[Abstract]:Based on the daily precipitation data of 112 rainfall stations in Bengbu basin of Huaihe River from 1956 to 2010, the temporal and spatial distribution characteristics of precipitation in the area of water resources in Bengbu basin were analyzed by using Mann-Kendall trend analysis and wavelet analysis method. The results are as follows: (1) the annual average rainfall in Bengbu is low in the north and high in the south, and the rainfall in the south of the four subzones is decreasing except for the south bank of the clam. The rainfall over Bengbu has an increasing trend. (2) from the point of view of time, MK test shows that the rainfall of the north bank above Wangjiaba has a significant decreasing trend, and that of the southern bank of the mussel section has a significant increasing trend. Mann-Kendall trend test UF curve showed that the variation trend of southern bank of mussel was not significant in the whole study period, and the sudden rainfall in 2003 had a great influence on the statistical results. (3) there were different periods of rainfall in the study area and subzone of Bengbu. But there is a common oscillation period of about 6 years. The characteristics of rainfall variation in the whole study area are affected by the area.
【作者單位】： 武漢大學(xué)水資源與水電工程科學(xué)國家重點(diǎn)實(shí)驗(yàn)室;水資源安全保障湖北省協(xié)同創(chuàng)新中心;
【基金】：國家“十二五”水專項(xiàng)淮河課題(2014ZX07204-006) 中小河流及無測站流域徑流形成非線性機(jī)理及其模型的應(yīng)用基礎(chǔ)研究(41571028)
【分類號(hào)】：TV125
本文編號(hào)：2359321
[Abstract]:Based on the daily precipitation data of 112 rainfall stations in Bengbu basin of Huaihe River from 1956 to 2010, the temporal and spatial distribution characteristics of precipitation in the area of water resources in Bengbu basin were analyzed by using Mann-Kendall trend analysis and wavelet analysis method. The results are as follows: (1) the annual average rainfall in Bengbu is low in the north and high in the south, and the rainfall in the south of the four subzones is decreasing except for the south bank of the clam. The rainfall over Bengbu has an increasing trend. (2) from the point of view of time, MK test shows that the rainfall of the north bank above Wangjiaba has a significant decreasing trend, and that of the southern bank of the mussel section has a significant increasing trend. Mann-Kendall trend test UF curve showed that the variation trend of southern bank of mussel was not significant in the whole study period, and the sudden rainfall in 2003 had a great influence on the statistical results. (3) there were different periods of rainfall in the study area and subzone of Bengbu. But there is a common oscillation period of about 6 years. The characteristics of rainfall variation in the whole study area are affected by the area.
【作者單位】： 武漢大學(xué)水資源與水電工程科學(xué)國家重點(diǎn)實(shí)驗(yàn)室;水資源安全保障湖北省協(xié)同創(chuàng)新中心;
【基金】：國家“十二五”水專項(xiàng)淮河課題(2014ZX07204-006) 中小河流及無測站流域徑流形成非線性機(jī)理及其模型的應(yīng)用基礎(chǔ)研究(41571028)
【分類號(hào)】：TV125
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