研究河流生态径流,对维持河流健康、稳定具有重要意义。以梧桐河主要控制站-宝泉岭站1951~2013年逐月天然径流为基础,采用逐月次最小（大）值法、频率排位法分别计算该站最小（大）生态径流,参考RVA法,以逐月频率法计算河流适宜生态径流阈值,运用Tennant法评价上述计算值,并分析河流生态径流满足程度；同时,分析流域现状水资源开发以及未来水利发展对河流生态径流的影响。结果表明,频率排位法计算的最小、最大生态径流过程更利于维持河流生态健康和稳定；在非汛期的1~2月和12月,河流容易遭受极端流量条件,但大部分月份河流的流量条件对河流生境都是比较有利的；关门嘴子水库及关门嘴子灌区的建设会进一步提高河流水资源开发利用程度,同时宝泉岭站断面4~11月的最小生态径流和敏感期(4~8月)正常生态需水可能得不到满足,未来可尝试通过关门嘴子水库及细鳞河水库的综合调度,以确保下游河流生境尽量处在一个较为有利的流量条件下。上述研究成果可为未来流域科学开展水资源管理工作提供一定的参考和借鉴。

The study of the ecological runoff for the river is of great significance for maintaining the health and stability of the river． According to the monthly runoff data from 1951 to 2013 in the Baoquanling Station of the Wutong Ｒiver Basin,the minimum ecological flow and the maximum ecological flow is obtained by using the second minimum ( maximum) value method and the frequency ranking method． Meanwhile,reference to the ＲVA method,the thresholds for the optimal ecological flow is calculated,the Tennant method is used to evaluate the above results,and the guaranteed rates of the ecological flow are analyzed,the current situation of the water resources development in the river basin and the influence of the future water resources development on the river ecological runoff is analyzed． The results show that the processes for the minimum ecological flow and the maximum ecological flow in the Wutong Ｒiver Basin obtained by the frequency ranking method are more conducive to maintaining the ecological health and stability． During the non－flood season from January to February and December,the river is prone to extreme flow conditions,but the flow conditions of the river in most months are favorable to the river habitat． the construction of the Guanmenzuizi Ｒeservoir and Guanmenzuizi Irrigation Area will improve the river water resources development and utilization degree in the future． At the same time,the minimum ecological flow at the Baoquanling Station from April to December and the normal ecological water demand of the sensitive period( from April to August) may not be satisfied,and Guanmenzuizi Ｒeservoir and Xilin Ｒiver Ｒeservoir in the future can be controlled through the integrated scheduling to ensure the habitat of the downstream river as far as possible in a more favorable traffic conditions． The results of the above research serve as a reference for future water resource management．