| A STUDY ON THE RELATION BETWEEN THE VARIATION OF THE PRECIPITATION IN EASTERN JIANGHUAI WATERSHED AND SEDIMENT TRANSPORT IN CHIHE RIVER VALLEY |
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| 作者姓名： | ZAHNGJian－chun PENGPu－zhuo |
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| 作者单位： | DepartmentofUrbanandResourcesSciences,NanjingUniversity,Nanjing210093,P.R.China |
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| 摘 要： | Rainfall resource is very important to the development of society and economy,especially to eastern Jianghuai watershed which is now facing serious challenge of water shortage.Based on the observational records covering the period from 1957 to 1999,the characteristics of precipitation changing over eastern JiangHuai watershed and its connection to sediment discharge in Chibe River valley were studied using tendency analysis and correlation analysis.Results show that the rainfall in this area had a declining tendency in Spring at a rate of -21.2mm/10a,annual and Summer precipitation was increasing at the rate of 10.6mm/10a and 14.8mm/10a.The gray correlation analysis shows that sediment discharge correlated most closely with runoffs and the frequency of the rainstorm with a daily precipitation of 50-100mm,on the second place,with the number of rainy days.In addition,the paper suggests the major countermeasures and methods for controlling of soil and water losses in this area.
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| 关 键 词： | 江淮流域 降水量 沉积物 灰色关联分析 径流量 |
| 收稿时间： | 7 November 2001 |
A study on the relation between the variation of the precipitation in eastern Jianghuai watershed and sediment transport in Chihe River valley |
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| Jian-chun Zhang,Pu-zhuo Peng.A STUDY ON THE RELATION BETWEEN THE VARIATION OF THE PRECIPITATION IN EASTERN JIANGHUAI WATERSHED AND SEDIMENT TRANSPORT IN CHIHE RIVER VALLEY[J].Chinese Geographical Science,2002,12(1):44-49. |
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| Authors: | Jian-chun Zhang Pu-zhuo Peng |
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| Institution: | (1) Department of Urban and Resources Sciences, Nanjing University, 210093 Nanjing, P. R. China |
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| Abstract: | Rainfall resource is very important to the development of society and economy, especially to eastern Jianghuai watershed which
is now facing serious challenge of water shortage. Based on the observational records covering the period from 1957 to 1999,
the characteristics of precipitation changing over eastern JiangHuai watershed and its connection to sediment discharge in
Chihe River valley were studied using tendency analysis and correlation analysis. Results show that the rainfall in this area
had a declining tendency in Spring at a rate of −21.2mm/10a, annual and Summer precipitation was increasing at the rate of
10.6mm/10a and 14.8mm/10a. The gray correlation analysis shows that sediment discharge correlates most closely with runoffs
and the frequency of the rainstorm with a daily precipitation of 50–100mm, on the second place, with the rainfall and the
frequency of the rainstorm of a daily precipitation no less than 100mm; and thirdly with the number of rainy days. In addition,
the paper suggests the major countermeasures and methods for controlling of soil and water losses in this area.
Foundation item: Under the auspices of the Special Fund Project of Anhui Provincial Irrigation Office (No. 01-11).
Biography: ZHANG Jian-chun (1964 –), male, a native of Nanjing, associate professor. His research interest includes physical
geography. |
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| Keywords: | eastern Jianghuai watershed Chihe River rainfall sediment discharge correlation grade |
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