Page 14 - 《水文》2023年第5期

第5期 李磊等：数字孪生流域水流网络建设关键技术研究 11

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水利学报，2020，51（6）：685-694. 学报，1999（S1）：-10.
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Research on Key Technologies of Digital-Twin Watershed Network Construction

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LI Lei ，LI Jiahuan ，WANG Xu ，WANG Hua ，CHEN Qiong ，HOU Aizhong 1
（1. Information Center, Ministry of Water Resources, Beijing 100053, China;
2. Beijing Jinshui Information Technology Development Co., Ltd., Beijing 100053, China）
Abstract：As the basic work of the digital-twin watershed, the digital flow network should be able to truly reflect the topological
relationship and underlying surface characteristics of the basin flow in the physical world, which can be dynamically adjusted ac⁃
cording to a number of human activities and business needs such as water conservancy project construction. This study made full
use of the multi-source information such as DEM data, Water One Map data, high-resolution remote sensing image data, recon⁃
structs the digital water flow network of the basin through a division method oriented to the Hydrological Unit. We takes into ac⁃
count various special situations such as lakes and reservoirs, inland rivers, underground rivers, artificial rivers, and international
rivers, and fully integrates important nodes such as flood reporting stations and reservoir projects with the natural basin. Finally, a
set of nationwide watershed digital flow network data sets has been constructed, which laying a solid foundation for promoting the
construction of digital-twin watershed.
Keywords：multi-source information; flow network; digital twins; Water One Map

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Hydrological Similarity Analysis of Watershed Based on Hydrological Simulation

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LIANG Meixia ，CHEN Zhibiao ，CHEN Zhiqiang ，CHEN Haibin ，QU Xiaolin 2,3
（1. School of Resources & Environmental Science, Quanzhou Normal University, Quanzhou 362000, China;
2. Geography Science College, Fujian Normal University, Fuzhou 350007, China;
3. Key Laboratory for Humid Subtropical Eco-geographical Processes of the Ministry of Education, Fujian Normal
University, Fuzhou 350007, China;
4. School of History and Geography, Minnan Normal University, Zhangzhou 363000, China）

Abstract：Taking Zhuxi watershed of Changting County，Fujian Province and its affiliated Youwuzhen watershed as the research

area，hydrological similarity evaluation indexes between the two watersheds were constructed，and the hydrological similarity was

evaluated quantitatively. The results show that the hydrological similarity between Zhuxi watershed and Youwuzhen watershed is at

a completely similar level，and the parameters of the model can be applied to the hydrological simulation of Zhuxi watershed
without measured data.
Keywords：hydrological similarity; similarity element values; hydrological simulation; ungauged watershed