Methodologies and Management Framework for Restoration of Wetland Hydrologic Connectivity: A Synthesis

ABSTRACT Under the dual influences of high‐intensity anthropogenic activity and climate change, wetland hydrologic connectivity (HC) has decreased significantly, resulting in the severe fragmentation of wetlands, a decrease in wetland area, and a degradation of hydrological functions, resulting in a...

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Bibliographic Details
Published in:Integrated environmental assessment and management 2020-06, Vol.16 (4), p.438-451
Main Authors: Meng, Bo, Liu, Jing‐ling, Bao, Kun, Sun, Bin
Format: Article
Language:English
Subjects:
Anthropogenic factors
Climate change
Degradation
Disaster management
Drought
Environmental restoration
Human influences
Hydrology
Literature reviews
Management framework
Network–water balance
Recovery
Recovery of function
Repair
Restoration
Structure-function relationships
Water balance
Wetland hydrologic connectivity
Wetlands
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Summary:ABSTRACT Under the dual influences of high‐intensity anthropogenic activity and climate change, wetland hydrologic connectivity (HC) has decreased significantly, resulting in the severe fragmentation of wetlands, a decrease in wetland area, and a degradation of hydrological functions, resulting in a worsening disaster response to floods and droughts. Dynamic changes in wetland HC are affected by a variety of factors. Many degraded wetlands have undergone measures to restore HC. Recovery can improve the HC pattern of degraded wetlands. Based on the knowledge of practitioners and a review of the literature, it was found that recovery measures can be divided into structural recovery and functional recovery according to the specific recovery objectives. However, the current recovery method lacks a holistic analysis of the HC pattern. To this end, we propose a hydrologic network–water balance‐based HC recovery and management framework that overcomes the limitations of single‐drive‐factor repair and local repair effects. Integr Environ Assess Manag 2020;16:438–451. © 2020 SETAC KEY POINTS The driving factors of hydrologic connectivity (HC) can be divided into long‐term driving factors, medium‐term driving factors, and short‐term driving factors. Recovery measures can be divided into structural recovery and functional recovery. The network–water balance‐based framework can systematically contribute to the HC recovery. Future challenges include the influence mechanism of barriers to HC and ecological integrity, the success indicator system for evaluating restoration effects, and better benefit coordination.
ISSN:1551-3777
1551-3793
DOI:10.1002/ieam.4256