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Study on the Variation Characteristics of Runoff and Sediment in Taizihe Watershed, Liaoning Province

机译：辽宁太子河流域径流泥沙变化特征研究。

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Based on runoff and suspended sediment of 9 stream gauging stations and precipitation of 31rainfall statsions from 1973 to 2011 in Taizihe River watershed, areal composition, temporal trend and relationship of runoff and sediment were analyzed. The results showed that the feature of runoff and sediment came from different areas existed above Benxi hydrometric station, while runoff and sediment came from the same area in the Benxi-Liaoyang section, where the erosion and sediment yield were severe, with the percentages of sediment discharge from tributaries larger than the percentages of area and runoff, however, because of reservoirs, a large amount of sediment deposited in this section. The feature of runoff and sediment came from different areas also existed in Liaoyang-Tangmazhai section, with Liaoyang and Lishan as the source of runoff and other areas of sediment. For the 9 hydrometric stations, the average correlation coefficient between precipitation and runoff depth, modulus of sediment yield, and sediment concentration was 0.895, 0.607, and 0.315, respectively, indicating a decreasing correlation. The Mann-Kendall trend test showed there was no trend in precipitation, and insignificant decreasing trends in runoff depth and runoff coefficient. There were 5 hydrometric stations showed significant decreasing trend in modulus of sediment yield and 1 station significant increasing trend. There were 6 hydrometric stations showed significant decreasing trend in sediment concentration and 1 station significant increasing trend. The double mass curves analysis showed that under the same precipitation, the runoff depth of only 3 hydrometric stations decreased from 1997, and under the same runoff depth, decreasing trend in the modulus occurred for 6 hydrometric stations, increasing trend for 1 station, and no trend for 2 stations.
机译：根据太子河流域1973〜2011年9个测流站的径流和泥沙淤积及31种降雨的降水量，分析了径流组成，时间趋势及其与泥沙的关系。结果表明，本溪水文站上方径流和泥沙特征存在于不同区域，而本溪辽阳段径流和泥沙来自同一区域，侵蚀和泥沙产量严重，含沙量高。来自支流的流量大于面积和径流的百分比，但是由于有水库，该段沉积了大量沉积物。辽阳—唐马寨段还存在径流和泥沙的特征，辽阳和and山是径流和其他泥沙区的来源。对于这9个水文站，降水与径流深度，泥沙产量模量和泥沙浓度之间的平均相关系数分别为0.895、0.607和0.315，表明相关性在降低。 Mann-Kendall趋势检验表明没有降水趋势，径流深度和径流系数的下降趋势均不明显。 5个水文站的泥沙产量模量呈明显下降趋势，有1个站的泥沙产量呈明显上升趋势。 6个水文站的泥沙浓度呈明显下降趋势，有1个站的泥沙浓度呈明显上升趋势。双重质量曲线分析表明，在相同的降水量下，只有3个水文站的径流深度比1997年减少;在相同的径流深度下，6个水文站的模量下降趋势出现，1个水文站的模量下降趋势没有。 2站的趋势。

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