Abstract
Spartina alterniflora is a perennial herb native to the American Atlantic coast and is the dominant plant in coastal intertidal wetlands. Since its introduction to China in 1979, it has quickly spread along the coast and has caused various hazards. To control the further spread of S. alterniflora in China, we first reconstructed the history of the spread of S. alterniflora in its invasion and origin countries. We found that S. alterniflora spreads from the central coast to both sides of the coast in China, while it spreads from the west coast to the east coast in America. Furthermore, by comparing 19 environmental variables of S. alterniflora in its invasion and origin countries, it was found that S. alterniflora is more and more adaptable to the high temperature and dry environment in the invasion country. Finally, we predicted the suitable areas for this species in China and America using the maximum entropy (MaxEnt) model and ArcGIS. Overall, through analysis on the dynamic and trend of environmental characteristics during the invasion of S. alterniflora and predicting its suitable area in the invasion area, it guides preventing its reintroduction and preventing its further spread of the species has been found. It has reference significance for studying other similar alien plants and essential enlightening relevance to its invasion and spread in similar areas.
Highlights
Biological invasion is considered the second-largest factor leading to the reduction of biodiversity after habitat fragmentation (Vitousek et al, 1996; Wilcove et al, 1998)
Plant invasion is an important branch of biological invasion research, which refers to the phenomenon where an alien plant is introduced into other new areas by human or natural factors; after some time, it can grow and reproduce wildly and threaten the local ecosystem, biodiversity, and even human health (Mack et al, 2000; Sakai et al, 2001; Richardson and Van Wilgen, 2004)
Based on the climate adaptability of S. alterniflora in China and its climatic adaptability during the invasion, the maximum entropy (MaxEnt) model and ArcGIS were used to predict its suitable ecological distribution in China and America, and monitoring and early warning were conducted to control the further spread of S. alterniflora in China
Summary
Biological invasion is considered the second-largest factor leading to the reduction of biodiversity after habitat fragmentation (Vitousek et al, 1996; Wilcove et al, 1998). Plant invasion is an important branch of biological invasion research, which refers to the phenomenon where an alien plant is introduced into other new areas by human or natural factors; after some time, it can grow and reproduce wildly and threaten the local ecosystem, biodiversity, and even human health (Mack et al, 2000; Sakai et al, 2001; Richardson and Van Wilgen, 2004). This plant is called an invasive plant. Statistics showed that China needs to invest a lot of money to control these invasive plants (Lin et al, 2007; Weber et al, 2008)
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