水资源与水工程学报2017，Vol.28Issue(4)：97-102,6.DOI:10.11705/j.issn.1672-643X.2017.04.17
广西澄碧河水库下游河道年生态需水量的计算对比研究
Comparison research of annual ecological water demand of the downstream river of Guangxi Chengbihe Reservoir
摘要
Abstract
In view of the calculation of ecological water demand in the river course, taking the downstream river channel of Chengbihe Reservoir in Guangxi as an example, three different hydrological calculation methods were used to estimate the ecological water demand, and the traditional Tennant method and the monthly guaranteed frequency method have been improved.Considering the shortcomings of the traditional Tennant method, the water use period is redivided, and the correction coefficient is introduced to revise the flow percentage to make it more suitable for the river.In addition, the monthly guaranteed frequency method has been improved in two aspects, so that the calculation results are more reasonable and reliable.The results show that the three methods all can be applied to the river ecological water requirement calculation.In normal years (P=50 ％), using the modified Tennant method and the improved monthly guaranteed frequency method to calculate the suitable water requirement of river, and the water demand are respectively 4.99×108 m3, 3.80×108 m3.In addition, by using the during the year distribution method we obtained results for 3.17×108 m3, which is relatively small compared to the above two methods, but within the reasonable limits, and still has some significance for extension use.关键词
生态需水量/Tennant法/月保证率法/年内展布法/澄碧河水库Key words
ecological water demand/Tennant method/the monthly guaranteed frequency method/during the year distribution method/Chengbihe Reservoir分类
资源环境引用本文复制引用
杜懿,麻荣永..广西澄碧河水库下游河道年生态需水量的计算对比研究[J].水资源与水工程学报,2017,28(4):97-102,6.基金项目
国家自然科学基金项目(51369005) （51369005）
