Method for controlling spartina alterniflora instruction with non-petal sonneratia and recovering mangrove forest ecology

Abstract

The invention relates to a method of controlling the invasion of spartina alterniflora and restoring the ecological environment of mangrove by adopting the sonneratia apetala. The method is characterized by the steps: (1) pretreating the tidal flat of the spartina alterniflora invasion according to the requirement; (2) preparing the nursery stock of the sonneratia apetala; (3) planting the nursery stock of the sonneratia apetala according to the site condition and the thickness of the spartina alterniflora; (4) supporting and fixing the planted nursery stock; (5) pruning the undergrowth spartina alterniflora and planting the native mangrove after the crown closure and the fade-away or the complete fade-away of the spartina alterniflora. The spartina alterniflora starts the crown closure after a plantation of 1-1.5 years, the native mangrove including bruguiera gymnorrhiza and kandelia candel in the undergrowth of the spartina alterniflora can be planted after the sonneratia apetala gradually recesses to promote the formation of the community of rich biodiversity. The method adopts the fast-growing pioneer species of the sonneratia apetala to compete with the spartina alterniflora for fertilizer, water and sunlight, so as to cause the spartina alterniflora decline or death. The adopted sonneratia apetala has long growth period, large biomass, high stress resistance, easy plantation and good weed-suppressive effect.

Description

technical field [0001] The invention relates to a method for controlling the invasion of Spartina alterniflora and restoring the ecology of mangroves by using Spartina apetalum, which is suitable for controlling the invasion of Spartina alterniflora in coastal tidal flats and other wetlands, and restoring tidal flat mangroves infested by Spartina alterniflora ecosystem. It belongs to the technical field of environmental protection. Background technique [0002] Spartina altermiflora (Spartina altermiflora) is native to the Atlantic coast of North America, and it is a perennial grass growing on the tidal flats of the intertidal zone. In 1979, Nanjing University introduced it from the United States (used as a plant for beach protection and dike protection). It was first successfully planted in Jiangsu, and then introduced into Fujian in 1980. In 1982, it was expanded to Jiangsu, Guangdong, Guangxi, Zhejiang and Shandong. Due to its wide adaptability, strong stress resistance...

AI Technical Summary

Problems solved by technology

[0007] In summary, the existing prevention and control methods for the invasion of Spartina alterniflora have relatively large defects: controlling Spartina alterniflora with physical methods has low efficiency, high cost, and is difficult to eradicate; chemical methods will inevitably bring about environmental pollution ; Biological control methods using natural enemy animals may bring ecological risks