松花江适宜生态流量研究

Study on ecologically suitable flow of Songhuajiang River

以维持水生态系统的完整性为保护目标,应用鱼类生境法和鱼类生物量法,计算了松花江的适宜生态流量及其相对值(适宜生态流量与多年天然平均流量的比值)。研究表明,2种方法计算的结果基本一致。在没有回水顶托的影响下,鱼类生境法适用于不同尺度的河流;而鱼类生物量方法,一般适用于较大的河流和平原型河流。

Taking the maintenance of the integrality of aquatic eco-system as the protective object, the ecologically suitable flow of Songhuajiang River and its relative value （ the ratio between the ecologically suitable flow and the natural mean flow） are calcu- lated herein with both the fish habitat method and the fish biomass method. The study shows that the results from both the methods are basically identical. Under the condition of no effect of backwater, the fish habitat method is applicable to the rivers of various scales and the fish biomass method is generally applicable to the larger rivers or the plain rivers.