金沙江流域尼沙演变过程及趋势分析
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TV143.1 X143

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Analysis of the Sediment Development and Trend In Jinshajiang River Drainage Area
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    摘要:

    金沙江集水面积48.51万Km^2,多年平均流量1429亿m^3,输沙量2.47亿t/a,与长江上游的其它支流相比,是流域面积最大,产水,产沙最多的河流,是三峡水库和长江上游最大沙源。研究金沙江泥沙演变过程和趋势,不仅关系到金沙江水资源开发战略,而且对控制三峡水库泥沙淤积及开发长江水资源亦具有重要意义。对金沙江流域主要水文控制站-屏山站的流量,输沙量进行了统计分析,运用非参数统计的Spearman秩次相关检验,Kendell秩次相关控制站-屏山站的流量,输沙量进行了统计分析,运用参数统计的Spearman秩次相关检验,Kendell秩序相关检验,线性回归检验等方法,对屏山站的水沙演变趋势进行了分析检验,得出了水沙演变无明显趋势的结论。

    Abstract:

    Jinshajiang River, which has a drainage area of 485,100 Km 2, average flux of 142.9 billion m 3, and soil conveyance of 247 million t/a, is the largest branch of Changjiang river. It is also the largest soil resource of the Three Gorges reservoir and upper reach of Changjiang River. To research the development and trend of Jinshajiang sediment not only has a relation to Jinshajiang water resource strategy, but also has important meaning to control the silt in Three Gorges reservoir and the Changjiang water resource development. The paper statistically analyses the flux and sediment conveyance of the Pingshan station, which is the primary hydrological station in the Jinshajiang River Drainage Area. Through several non-parameter statistical methods such as Spearman order correlativity check, Kendell order correlativity check, and linear regression check, the paper concludes that the sediment evolvement trend of Pingshan station is not distinct.

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黄川 娄霄鹏 等.金沙江流域尼沙演变过程及趋势分析[J].重庆大学学报,2002,25(1):21-23.

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  • 最后修改日期:2001-10-24
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