OPTIMIZATION OF ECOLOGICAL WATER SUPPLY AND LONG-TERM PROTECTION OF WETLAND BASED ON THE HYDRODYNAMIC PROCESS: A CASE STUDY OF HANSHIQIAO WETLAND IN BEIJING

WANG Xuan; XIE Tian; ZHANG Yong; DOU Peng; CUI Baoshan; CAO Bo; LI Xinyu; DING Xinyu; YANG Zhihao

doi:10.13205/j.hjgc.202301008

Volume 41 Issue 1

Jan. 2023

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WANG Xuan, XIE Tian, ZHANG Yong, DOU Peng, CUI Baoshan, CAO Bo, LI Xinyu, DING Xinyu, YANG Zhihao. OPTIMIZATION OF ECOLOGICAL WATER SUPPLY AND LONG-TERM PROTECTION OF WETLAND BASED ON THE HYDRODYNAMIC PROCESS: A CASE STUDY OF HANSHIQIAO WETLAND IN BEIJING[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(1): 61-71. doi: 10.13205/j.hjgc.202301008

Citation:

WANG Xuan, XIE Tian, ZHANG Yong, DOU Peng, CUI Baoshan, CAO Bo, LI Xinyu, DING Xinyu, YANG Zhihao. OPTIMIZATION OF ECOLOGICAL WATER SUPPLY AND LONG-TERM PROTECTION OF WETLAND BASED ON THE HYDRODYNAMIC PROCESS: A CASE STUDY OF HANSHIQIAO WETLAND IN BEIJING[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(1): 61-71. doi: 10.13205/j.hjgc.202301008

Citation:

WANG Xuan, XIE Tian, ZHANG Yong, DOU Peng, CUI Baoshan, CAO Bo, LI Xinyu, DING Xinyu, YANG Zhihao. OPTIMIZATION OF ECOLOGICAL WATER SUPPLY AND LONG-TERM PROTECTION OF WETLAND BASED ON THE HYDRODYNAMIC PROCESS: A CASE STUDY OF HANSHIQIAO WETLAND IN BEIJING[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(1): 61-71. doi: 10.13205/j.hjgc.202301008

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OPTIMIZATION OF ECOLOGICAL WATER SUPPLY AND LONG-TERM PROTECTION OF WETLAND BASED ON THE HYDRODYNAMIC PROCESS: A CASE STUDY OF HANSHIQIAO WETLAND IN BEIJING

doi: 10.13205/j.hjgc.202301008

1. State Key Laboratory of Water Environment Simulation, School of Environmental, Beijing Normal University, Beijing 100875, China;
2. Beijing Shunyi Hanshiqiao Wetland Nature Reserve Management Center, Beijing 101309, China;
3. Beijing Water Science and Technology Research Institute, Beijing 100048, China

Received Date: 2022-08-20
Available Online: 2023-03-23

Abstract

Abstract

Wetlands have important ecological service functions including water conservation, but they shrink and degenerate under the multiple stresses of human activities and climate change, and the insufficient water supply of wetlands is one of the main ecological problems. With the implementation and operation of trans-regional and trans-basin water transfer projects, ecological water replenishment has become a key technology component of wetland restoration and water resource allocation. Therefore, we should pay attention to the optimization of the water supply path of the wetland with multiple water sources, and propose the optimization scheme of the ecological water supply mode based on the hydrodynamic process of the wetland water supply. Under the background that the whole Chaobai River basin will be open to water in 2021, taking the only large reed marsh wetland in Beijing-Hanshiqiao Wetland as the case area, the SWAT model of the Chaobai River basin is constructed to simulate the runoff change rule, and the MIKE21 model is used to simulate the wetland water replenishment-hydrodynamic coupling process, and the hydrodynamic change characteristics of six wetland water replenishing scenarios are compared. The results show that the separation between the south and the north of the wetland caused by the blocked connection of the internal water system of the Hanshiqiao Wetland is the main bottleneck limiting the efficiency of ecological water replenishment. The simultaneous water replenishment of multiple flow paths in the north and south areas of the wetland, as well as the reconstruction of the wetland hydrological connection structure, are the optimal schemes to improve the hydrodynamic conditions of water replenishment and enhance the ecological water replenishment effect. The research conclusion can provide reference for long-term management and ecological restoration of wetlands, and is conducive to the construction of ecological water system in the capital city.
- Chaobai River,
- SWAT model,
- MIKE21 model,
- ecological hydration,
- scenario simulation

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References(27)

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