Method for evaluating spartina alterniflora suitable area

Abstract

The invention discloses a method for evaluating a spartina alterniflora suitable area. The method comprises the following steps: 1) determining spartina alterniflora distribution points and constructing a model evaluation area; 2) screening a spartina alterniflora suitable area evaluation index system, and establishing a spartina alterniflora environmental ecological niche invasion risk evaluationmodel; and 3) carrying out simulation calculation and comparison on propagation distribution of spartina alterniflora seeds or tillering plants. According to the method, the spartina alterniflora distribution of the current time and the historical time is mastered by using a remote sensing technology; the potential distribution of spartina alterniflora under the future environmental change is predicted by combining an ecological niche model; meanwhile, hydrodynamic simulation is innovatively adopted to predict the propagation distribution range and path of spartina alterniflora seeds or propagules; and the method guarantees the feasibility of the actual calculation amount while guaranteeing the reliable precision of species distribution data, environment data selection and model prediction, further improves the prediction precision of the potential growth region of spartina alterniflora, and enables the calculation of the spartina alterniflora suitable region evaluation method to be more feasible.

Description

technical field [0001] The embodiments of the present invention relate to the field of risk assessment and monitoring of coastal invasive organisms, in particular, to a method for assessing suitable areas for Spartina alterniflora. Background technique [0002] Spartina alterniflora has a good role in promoting silt formation and protecting beaches and shores. However, it reproduces sexually and asexually, and has a strong ability to reproduce and disperse. The introduction of Spartina alterniflora will threaten indigenous species in coastal wetlands and seriously affect the native coastal ecosystem. Since it was introduced and planted in 1979, Spartina alterniflora has spread all over the coastline of my country. In 2003, the former Ministry of Environmental Protection listed it in the list of invasive alien species. There were two activities to introduce Spartina alterniflora in Guangxi, namely Shanjiao Beach and Shachong Shipyard Beach, Shankou Town, Beihai City in 1979, ...

AI Technical Summary

Problems solved by technology

[0003] Due to the strong growth and reproduction ability of Spartina alterniflora and the limitations of control measures, it is very difficult to control, requiring huge human and economic costs, and the problem of secondary invasion of Spartina alterniflora after ecological management is also very common

Images