龙刘两库补水对黄河中下游的环境补偿影响分析

Analysis on Environment Compensation of Yellow River Mid-Downstream by Longyangxia and Liujiaxia Reservoirs Regulation

基于黄河干流水库群补偿调节的结果,结合定性与定量分析,客观论述了龙刘两库补水对黄河中下游环境产生的正面和负面影响。其中正面影响包括增加工农业供水量、提高防凌保证率以及减少利津断面断流次数等,负面影响定性分析了补水后下游河道增淤以及对过洪能力的影响。结果表明龙刘两库补水后,兰州和花园口断面防凌保证率明显提高,大大降低了凌灾发生的可能;降低了利津断面断流频率26%左右。本文旨在通过对黄河流域环境补偿的影响分析,引起有关决策部门对环境补偿问题的重视,起到抛砖引玉的目的。

Based on the results of reservoirs compensative regulation in main stream of the Yellow River, combined qualitative with quantitative analysis, active and negative functions to environment on mid-downstream of the Yellow River were impersonality discussed by Longyangxia and Liujiaxia reservoirs regulation. Active functions included increasing water supply, increasing ice prevention guarantee rate and decreasing water interception at Lijin profile; negative included increasing river channel sedimentation and affecting capacity of the river to carry larger volumes of water. The results indicated that ice prevention guarantee rates of Lanzhou and Huayuankou profiles were increased so as to reduce ice flood occurring probability, and water interception rate at Lijin profile was reduced 26%. Through analyzing on environment compensation effect of the Yellow River, notice should be focused on environment compensation.