文献类型：期刊文献

英文题名：Effects of vegetation height and relative submergence for rigid submerged vegetation on flow structure in open channel

作者：Wang, Zhongyu[1] Zhang, Huayong[1] He, Xing[1] Jiang, Qi[2] Xu, Weigang[3] Tian, Wang[1]

第一作者：Wang, Zhongyu

通信作者：Zhang, HY[1]

机构：[1]North China Elect Power Univ, Res Ctr Engn Ecol & Nonlinear Sci, Beijing, Peoples R China;[2]Natl Major Sci & Technol Program Management, Off Water Pollut Control & Treatment, Beijing, Peoples R China;[3]Chinese Acad Forestry, Inst Wetland Res, Beijing, Peoples R China

年份：2022

卷号：26

期号：1

起止页码：39-46

外文期刊名：EARTH SCIENCES RESEARCH JOURNAL

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000798987100003)】；

基金：The authors would like acknowledge with great appreciation for the support provided by the Chinese National Major Science and Technology Program for Water Pollution Control and Treatment (No. 2017ZX07101-002, No. 2015ZX07204-007, No. 2015ZX07203-011) and the Chinese Fundamental Research Funds for the Central Universities (No. 2021MS047).

语种：英文

外文关键词：Rigid submerged vegetation; Vegetation height; Relative submergence; Flowstructure; Water depth; Flow velocity distribution

摘要：Vegetation commonly existing in natural rivers interact with water flow in a strongly nonlinear manner. In this re-search, vegetation height and a concept of relative submergence are adopted to experimentally investigate the effects of rigid submerged vegetation on flow structure. The results reveal that the relative submergences decrease along the submerged vegetation section. From the perspective of case-average, the linear relationship between water depth and vegetation height demonstrates a decrease trend of average relative submergence with the increase of vegetation height. The differences between the maximum and minimum water depths of submerged cases can be described by a positive linear function with vegetation height and a negative power function with relative submergence, by which, the raised water depths induced by vegetation block can be predicted under similar hydraulic conditions. The findings of the research, especially the introduction of relative submergence and its functional relationship with the water depth alter -nation induced by submerged vegetation, may improve the comprehensive understandings of the hydraulic behaviors in vegetated open channel and give some guidance to the practices of river ecological restoration.