Quanzhou Bay (Shishi Section) Mutual Flower Rice Cleaner Cleaning Project Starting

The excavator "sea drift" besieged thousands of acres of "rice grass"

More than 10 tons of excavators have been removed and buried in the beach with the help of floating boxes on the beach, and a piece of mutual rice grass have been eliminated ... Since July, a battle without smoke has launched in the stone lion section of the south bank of Quanzhou Bay. Shishi City launched the Quanzhou Bay (Shishi Section) Mutual Grass Cleaning Project and purchased third -party services. It is planned to clean up more than 1,380 acres of mutual rice grass in the provincial and outside the provincial nature reserve of Quanzhou Bay River Wetland Wetland. By the end of October, Quanzhou Bay (Shishi section) was "re -see the sun" by thousands of acres of beaches eroded by each other.

After eight years, the soil comes again

Mutual flowers (commonly known as rice grass), native to North America, growing on the rivers and beachs, and the effect of anti -waves and embankments. At the end of the 1970s, due to the two major functions of "Polyan Beach, protecting stasis", my country introduced this foreign species.

However, due to the super -adaptable ability and reproductive ability, the rapid spread in the wetland of the tide beach has become the most widely distributed salt marsh vegetation in the coastal beach in China. The silt tide beach in the coastal areas of Zhejiang and Fujian. Destroyed offshore biological habitats, affects beach coating, blocked channels, affects seawater exchange capabilities, and caused water quality to decline. Mutual flowers and grass have become veritable "grass" and are listed as foreign invasive species. As a coastal city, Shishi is also deeply harmed, especially the beach from the outside of the water to the beach of Shihu Lake.

In May 2013, Shishi launched the resource and environmental remediation project of the coast of Quanzhou Bay on the south bank of the Quanzhou Bay. Flower rice grass is cleaned up and rectified. The coastline within the rectification range is about 10 kilometers long and the area of ​​66.67 hectares is cleared. This newspaper reported this in July 2021 that the wetland outside the water head to Shihu Village coastline, and the rice grass "rolled the soil", the growth area was no less than eight years ago.

Machinery assignment deeply digs deep burial

The desertation of Mutual flowers and grass has attracted great attention from the municipal government and natural resource management departments. On June 22 this year, Shishi City held a coordination meeting of the Quanzhou Bay (Shishi Section) Mutual Grass Cleaning Project to launch the Mutual Cao Cao Cleaning and Remediation Project. On June 30, the project entered the market; on July 1, the project started.

On the afternoon of July 11, the reporter saw at the construction site of the wetland outside the water head of Quanzhou Bay (Shishi section) that the four excavators were working on the beach, digging, flipping, deep buried ... The giant hand "dug out into the mud. With more than 10 tons of excavators, the combination of floating boxes on the beach. As soon as the "giant hand" supports, a relative movement will form between the excavator and the beach, so that the excavator will be flat on the beach.

"After the dug -of -the -mounted rice grass is flipped 180 degrees, it is buried deep under the mud; after that, we also need to make the" flattening treatment ". Rice grass is rotten under the mud. "Mr. Ye, the person in charge of the construction unit, introduced to reporters. It is reported that the method of "deep digging and deep burial" in the Mutual Grass Clean Cleaning and Remediation project is a common practice in the industry. Treatment of local physical treatment will not cause "secondary pollution".

According to information, Mutual flower rice grass has a very high reproductive coefficient. It can reproduce dozens or even hundreds of plants in a year, and a variety of mutual flowers and grass can be reproduced and expanded to a radius of 3 meters a year. "We now adopt the 'two shifts'. In addition to the unable to operate in the seawater climax, the day and night work are uninterrupted. The conservative estimate is about 60 acres of the daily cleaning area." The actual operating area will exceed 1,380 acres.

Upstream and downstream coordination and linkage

The rectification of Mutu Rice Grass is a worldwide problem. Specific to Shishi, there are also regional difficulties.

From the perspective of geographical conditions, the outside of Shishi Shuitou to the coastline of Shihu Village is on the downstream of the Jinjiang Basin on the south bank of Quanzhou Bay. Mutual flowers and grass seeds, grass roots drift with seawater to the downstream Shishi coast can be renewed, especially in the waters of Shihu Village to form a cresumbal -shaped bay. The flow rate of seawater entering the bay slows down, which is easy to cause madness of Mutual flowers and grass. Since 2017, due to the unprecedented recuperation of mutual rice grass in Jinjiang and Luoyang River estuary area in the upper reaches of Quanzhou Bay, it has led to the recurrence of Mutual Grass in the stone lion waters in the lower reaches and continues to spread.

In March 2021, the comprehensive rectification project of the "Blue Bay" of Quanzhou City was officially started. The Jinjiang section on the west side of Quanzhou Bay was renovated, and the mangrove ecological restoration, bird habitat construction, coastal ecological transformation and other projects were implemented. content. The implementation of this project also provides a favorable opportunity for the rectification of the stone grasses in the stone section of the stone section on the south bank of Quanzhou Bay.

It is reported that after the construction of the Quanzhou Bay (Shishi Section) Mutual Grass Cleaning Project, the third -party service unit will also be responsible for 3 years of management and protection to monitor and prevent and control the Micao Grass Settlement area of ​​Quanzhou Bay (Shishi Section).

(Reporter Lin Enbing Yan Huajie)

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