Research advancement on degradation mechanism and ecological restoration technology of coastal salt-marsh：a review
ZHANG Mingliang
College of Marine Science and Environment, Technology Innovation Center for Coastal Ecological Environment and Disaster Protection, Liaoning Province, Dalian Ocean University, Dalian 116023, China
Abstract: Coastal salt-marsh is one of the important ecosystems connecting land and sea, and has significant ecological functions and ecological values. In recent years, a series of factors have contributed to the serious degradation in coastal salt-marsh. Exploration and practice on the degradation causes and restoration technologies in coastal salt-marsh have been conducted considerable studies from different fields, with a huge number of study results. Ecology, hydrology, environmental science, biology, estuarine dynamics, and other disciplines are all involved in the degradation and restoration technology of coastal salt marsh, being a typical interdisciplinary and hot research field. Here, we summarize the growth and development process of wetlands based on an analysis of the distribution characteristics of coastal salt marsh in China, and probe into the interaction between salt marsh plants and their influencing factors in terms of salinity stress, hydrological conditions, natural factors, natural succession, and human activities, which deepens the understanding of degradation factors and mechanisms in coastal salt marsh. We generalize the existing research on ecological restoration technology in coastal salt marsh, put forward the future prospects, such as wetland degradation mechanisms from a multi-disciplinary perspective, tridimensional and continuous studies using a variety of technologies, integrated application of numerous ecological restoration technologies, and discuss risk assessment of Spartinaalterniflora intrusion to provide a scientific reference for the research on degradation and ecological restoration in coastal salt marsh.
2022, Vol. 37 
