基于RVA法的河流生态需水量研究

以河流生态水文变化的指标体系（Indicator of Hydrologic Alteration，IHA）为基础，立足整体河流水文情势的流量谱系，采用变异性范围法（Range of Variability Approach，RVA），进行基于长系列历史流量资料的河流生态需水量估算，并以山西省5条较大河流的生态敏感断面为对象进行研究。结果表明，利用本方法估算的结果是合理的，可为河流生态需水量的估算和水资源的可持续开发利用提供科学依据。

RVA based study on river eco-water demand

On the basis of the Indicator of Hydrologic Alteration（IHA） and combined with the flow spectrum of an overall river hydrological regime，the eco-water demand of river is estimated with the Range of Variability Approach（RVA） based on long-series historical flow data，and then the eco-sensitive sections of five large rivers in Shanxi are studied as well.The study result shows that the estimated result got from the method given herein is reasonable.Therefore，the method can lay a scientific basis for the estimation of river eco-water demand and the sustainable development and utilization of water resources.