Possible impacts of the Poyang Lake (China) hydraulic project on lake hydrology and hydrodynamics

Author:

Lai Geying12,Wang Peng1,Li Lin1

Affiliation:

1. Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, Nanchang 330022, China

2. School of Geography and Environment, Jiangxi Normal University, Nanchang 330022, China

Abstract

Flow regime change is the leading driving force in the evolution of lacustrine ecological systems. According to the planned water level regulation scheme of the Poyang Lake hydraulic project (PLHP), this research discusses the possible impacts of PLHP on the hydrology and hydrodynamics of Poyang Lake (China) using the method of scenario simulation. The results show that a controlled water level of 11 m would effectively raise the average water level during the low-flow period of the lake in a typical dry year, normal year, and wet year, leading to the decrease of flow velocity in the lake. Those changes were more obvious in regions to the north of Tangyin, especially in the waterway of Poyang Lake into the Yangtze River. The flow field to the north of Tangyin under the scenario with the PLHP was apparently different from that under the scenario without PLHP. Furthermore, the PLHP had a significant impact on the water exchange period of the lake due to the increase in the water storage capacity and the reduction of flow velocity. These results can provide support for further quantitative analysis of water quality and the evolution of ecological systems in the lake affected by the PLHP.

Publisher

IWA Publishing

Subject

Water Science and Technology

Reference25 articles.

1. Satellite observations make it possible to estimate Poyang Lake's water budget;Feng;Environ. Res. Lett.,2011

2. Assessment of inundation changes of Poyang Lake using MODIS observation between 2000 and 2010;Feng;Remote Sens. Environ.,2012

3. Three-dimensional flow evolution after a dam break;Ferrari;J. Fluid Mech.,2010

4. Reservoir-induced downstream changes of water, sediment and channel morphology: a literature review;Fu;Acta Geogr. Sinica,2011

5. Effects of the Three Gorges Dam on Yangtze River flow and river interaction with Poyang Lake, China: 2003–2008;Guo;J. Hydrol.,2012

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3