Spartina alterniflora physical treatment and sand beach recovering method

Abstract

The invention discloses a spartina alterniflora physical treatment and sand beach recovering method which includes the steps of firstly, manually or mechanically cutting spartina alterniflora to leave stubbles lower than 5cm; secondly, fixing a mesh shading mulch above the cut area, and allowing the mesh shading mulch to be close to the ground; thirdly, opening part of the mesh shading mulch, and digging out spartina alterniflora root systems to determine root system death; fourthly, recycling the mesh shading mulch; fifthly, recovering a clean sand beach after natural sea water washing. The method is low in cost, fast in achieving the required result, strong in recovering purpose and free of environmental pollution.

Description

technical field [0001] The invention relates to a method for physical treatment of Spartina alterniflora on coastal beaches and a beach restoration method, and belongs to the technical field of ecological engineering. Background technique [0002] Spartina alterniflora is a perennial herb belonging to the Gramineae genus Spartina, native to the Atlantic coast. In order to protect the beach, improve the soil, and green the beach, Spartina alterniflora was introduced in some sea areas of my country in the 1980s, and certain economic benefits have been achieved. Spartina alterniflora has strong adaptability and spreading ability. It has spread all over the southeast coastal beaches from the warm temperate zone to the subtropical zone in my country. It is widely distributed in Guangxi, Guangdong, Fujian, Zhejiang, Shanghai, Jiangsu, Shandong, Tianjin and Liaoning, etc. 10 coastal provinces. After the introduction of Spartina alterniflora into the intertidal zone, it will occupy...

AI Technical Summary

Problems solved by technology

There are the following problems in this method: the one, although directly covering without mowing saves the cost, the overwhelmed Spartina alterniflora will rot after dying due to lack of oxygen, which will produce extremely bad smell, pollute the air, seawater and beach, and lead to the death of beach benthic organisms; the second is that the cover is airtight, and seawater will form a great buoyancy to it when the tide rises, and a lot of heavy objects need to be pressed on the cover to prevent it from being floated and washed away. The cover is easily damaged and drifts to other places to cause plastic pollution; and, on the other hand, the cleaning of a large number of heavy objects in the later stage of the project costs a lot