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| 皖江淮分水岭东部降水变化与池河流域输沙关系的研究 | |
| 引用本文： | 张建春,魏翔,史志刚,张效武.皖江淮分水岭东部降水变化与池河流域输沙关系的研究[J].水土保持学报,2002,16(1):116-119. |
| 作者姓名： | 张建春 魏翔 史志刚 张效武 |
| 作者单位： | 1. 南京大学城市与资源科学系,江苏,南京,210093 2. 中国科学院水利部水土保持研究所 3. 安徽省水利厅 |
| 摘 要： | 对皖江淮分水岭东部 195 7年以来的降水测站记录和该地区池河流域 1990年以来的降雨径流因子及输沙量资料分别进行了趋势分析和关联分析 ,发现 4 3年来 ,江淮分水岭东部降水的季节和年际变化异常显著 ,且春季降水具有明显的减少趋势 ,夏季和年总降水都有明显的增加趋势。以该地区池河流域为例 ,通过灰色关联分析揭示出径流量和日雨量 5 0～ 10 0 mm暴雨次数与输沙量的关联最为密切 ,其次是降雨量和大于 10 0 mm的暴雨次数与输沙量关联密切 ,最后是雨日天数。研究结果可为江淮分水岭地区旱灾和水土流失防治提供科学依据 |
| 关 键 词： | 江淮地区 池河流域 降水量 输沙量 |
| 文章编号： | 1009-2242(2002)01-0116-04 |
| 修稿时间： | 2001年10月25 |
Variation of Rainfall over East Area of Jianghuai Watershed Anhui Province and Its Connection to Sediment Transport in Chi River Watershed |
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| ZHANG Jiang chun,WEI Xiang,SHI Zhi gang,ZHANG Xiao wu.Variation of Rainfall over East Area of Jianghuai Watershed Anhui Province and Its Connection to Sediment Transport in Chi River Watershed[J].Journal of Soil and Water Conservation,2002,16(1):116-119. | |
| Authors: | ZHANG Jiang chun WEI Xiang SHI Zhi gang ZHANG Xiao wu |
| Institution: | ZHANG Jiang chun 1,WEI Xiang 2,SHI Zhi gang 3,ZHANG Xiao wu 3 |
| Abstract: | Based on the observational records covering the period from 1957 to 1999,the characteristics of precipitation changing over east area of Jianghuai watershed and its connection to sediment yield in Chi river watershed were studied using tendency analysis and correlation analysis. Results showed that the rainfall in this area had a down 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 correlation analysis shows that an amount of sediment transport has a very close relation with runoff and rainstorm of 50~100mm of daily rainfall. |
| Keywords: | Jianghuai region Chi river watershed rainfall amount of sediment transport |
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