广西漓江环境流量计算与分析评价

Assessment for Environment Flow of Lijiang River in Guangxi

人类活动对漓江生态的损害越来越严重,环境流量对维持漓江生态完整性和生物多样性具有很重要的作用。HIP和IHA都是以实测日流量系列为基础来计算河流环境流量的水文学方法。以广西漓江实测日流量资料为基础,采用这两种方法分别计算漓江环境流量,然后,将这两种环境流量结果与自然条件下的水流情势进行对比分析,结果表明:两种方法计算的环境流量中,各个指标值都有不同程度的变化,某些月份的自然月均流量会超出环境流量范围。最后,根据对比分析结果,确定合适的漓江环境流量。

Human action have made the damage for ecology on Lijiang River, the environment flow play an important part in maintaining river in ecological integrity. HIP and IHA are hydrology methods which are used to compute environment flow based on longtime gauging daily flow date. Using HIP and IHA methods to compute respectively the environment flow in terms of Lijiang River gauging daily flow date, then comparing the two environment flow results to natural flow regime, as a result： every environmental flow values computered by the two methods have more or less changes, in some month, the natural monthly average flow are beside the environmental flow range. Finally, deciding the reasonable environment flow of Lijiang River in terms of the compared result.