Alteration in the Lower Jinsha River after the Operation of Cascade Reservoirs—By Eco-Flow Metrics Based on Flow Duration Curve
Abstract: To evaluate the flow regime change in the lower Jinsha River after the operation of cascade reser-voirs, the change characteristics of flow regime in different periods were evaluated based on ob-served daily flow series at Pingshan hydrological station from 1951 to 2011 and the scheduling simulation data from 2031 to 2091 by using the eco-flow metrics based on flow duration curve. Meanwhile, the applicability of eco-flow metrics to evaluate the flow regime was discussed and compared with the results of flow regime obtained by using Range of Variability Approach (RVA). The results show that the operation of cascade reservoirs will lead to a significant change in flow regime at Pingshan hydrological station, which is mainly reflected in low flow and changes in low flow period. The results of flow regime obtained by using eco-flow metrics and RVA have a certain degree of similarity. Therefore, combination of the two groups of metrics provides a sufficient measure of the changes in the flow regime.
文章引用: 李 杰 , 陈 进 , 尹正杰 (2014) 金沙江下游梯级水库运行后水文情势变化分析—基于流量历时曲线的生态流量指标。 水资源研究， 3， 378-385. doi: 10.12677/JWRR.2014.35046
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