| 窟野河、孤山川、秃尾河 近期入黄泥沙及未来变化趋势分析 |
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| 引用本文： | 景可.窟野河、孤山川、秃尾河 近期入黄泥沙及未来变化趋势分析[J].中国水土保持,1993(2):24-25,49. |
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| 作者姓名： | 景可 |
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| 作者单位： | 中国科学院地理研究所 |
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| 摘 要： | 窟野河、孤山川、秃尾河三流域,是黄河中游多沙粗沙区的核心部分。三条河自1953年有观测资料以来,平均每年输入黄河的泥沙量为1.65亿t,其中粗沙量为0.89亿t。三条河各站1970年以来输沙量均为减少,其主要原因并非水土保持发挥了作用,而是由于降雨总量和降雨强度减少所致。神府煤田开发,至公元2000年平均每年将增加入黄泥沙量450万t。随着全球的增温,流域内的降雨量将会增加,植被的生境条件将得到改善,侵蚀产沙强度会随之减弱。但是,由于人口的增加,土地利用结构与垦殖指数都不会有明显的变化,所以流域的产沙不可能有大幅度的减少。
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| 关 键 词： | 窟野河 孤山川 秃尾河 入黄泥沙变化 煤田开发影响 气候变化影响 |
Analysis of Sediment Load Entering the Yellow River in Recent Years and Tendency of Its Variation in Fu-ture from Kuyehe,Gushanchuan and Tuweihe Rivers |
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| Abstract: | River basins of Kuyehe, Gushanchuan and Tuweihe rivers are the core parts of the source area of coarse sediment in the Middle Yellow River. Since 1953, the recorded average annual sediment load entering the Yellow River was 165 million tons in which coarse sediment was 89 million tons. Since 1970, sediment load from the three rivers decreased, it was not soil conservation work but the decrease of total rainfall and intensity of rainfall that played important roles. It is estimated that the average annual sediment load entering the Yellow River will increase by 4. 5 million tons due to the development of Shen-Fu coal mine by the year of 2000. With an increase of temprature of the whole globe, the rainfall of the three rivers will increase, the growth condition of vegetation will be improved and the intensity of soil erosion will be weakened. But the land use structure and reclamation index will not vary obviously with an increase of population, therefore, the sediment load from the river basins will not decrease greatly. |
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| Keywords: | variation of sediment entering the Yellow River influence of the development of the coal mine influence of the variation of climate Kuyehe River Gushanchuan River Tuwei-he River |
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