基于栖息地模拟的重口裂腹鱼繁殖期适宜生态流量分析

介绍了栖息地模拟方法原理及步骤,以姜射坝水电站减水段为例,应用栖息地模拟模型PHABSIM计算了重口裂腹鱼繁殖期适宜生境需水量。结果表明,该河段内重口裂腹鱼繁殖期适宜生态流量为40.6m3/s,其与水文学法的结果对比表明,该流量可以满足维持水生生物良好的生存条件的要求。指出当工程河段涉及珍稀鱼类关键生境时,采用栖息地模拟法确定受影响河段的生态需水量,可以更好地保护珍稀鱼类关键生境。研究结果可为已建电站减水河段生态修复工作提供依据,为拟建电站水生生态环境影响评价工作提供借鉴。

Ecological Flow Analysis of Schizothorax Davidi during Breeding Season Based on Habitat Simulation Method

This paper introduced principles and operating procedures of habitat simulation method. Habitat simulation model PHABSIM was applied in Jiaugshe hydropower station to calculate suitable habitat water demand of Schizothorax （Racoma） davidi （Sauvage） during breeding season. The results indicated that suitable ecological flow was 40. 6m3/s, which could meet the requirements of the good living conditions for aquatic organisms maintenance, compared with the results of hydrological method. When projected water sections related to the critical habitat of rare fishes, this method could confirmed the ecological water demand and this could preferably protect the habitat of rare fishes. The research results can provide basic data for the ecologic remediation work and propose reference to the ecological environment impact assessment of power stations planned for construction.