"Tailor -made" Josegai Wetland Repair Technology: Natural recovery is supplemented by the main manual measures

Cover Journalist Tian Zhilu Intern Wang Yiwen

Recently, the "Ruier Gai Shanxi Project Project" successfully declared, the Ruierga Grassland Wetland, located in the upper reaches of the Yellow River, is the largest Plateau peat swamp wetland in China. Maintaining the water conservation area is also the world's important wildlife habitat and rare plant distribution area. How to protect the fragile ecological environment of itself? To Guo Ping, the deputy chief engineer of the 405 team of the Sichuan Provincial Land and Mining Bureau that the restoration project will use more than 30 sub -projects to take a tailor -made repair technology by protecting and natural recovery and manual measures.

"Consolidate stability, and then improve. We want to maintain the advantages of the local ecological environment first, and then gradually overcome local highlights of ecological problems." The key position of the upstream national ecological barrier, the ecological environment itself is relatively fragile. Once a little destruction, it may increase the impact on the downstream. If it becomes larger, it will be more difficult to repair it. If Ruierga Wetland is now "protected", it will also double the "care and consolidation" ecological barrier.

The project should be officially started in early July this year until the end of 2024. In the early work, the project team adopted some plants suitable for the area to think about the combination of plants suitable for this area. "Take protection as the main protection and natural recovery, and then supplemented with some artificial measures to enable the ecology to recover as soon as possible."

For example, if you want to repair the sandy land, consider the grassland, the surrounding wetlands or protective forests, etc., which is equivalent to fixing from high and low or system matching.

Different from the past, if you are deserted somewhere, go to plant grass or restore wetlands. It is now repaired from its core and bad areas, and the surrounding slowdown and continues to degrade.

This time, the 405 team will fully spread out some of the original technical methods to simplify the ecological types of the governance area: the wetland is at the core, the surrounding is grassland, forest, and ice up. When treating wetlands, we must consider how to prevent the ecological problems of the surrounding grasslands from being brought into the wetland; when governing grassland, it will also consider whether the wetland will further degenerate into grassland and whether it will affect the surrounding grassland. All in all, such a process of push.

For example, the cause of desertification is the degradation of the surrounding forests, including the decline in the groundwater level of wetland, which will degenerate into a grass field. The grassland is influenced by human factors, and the food of animals, including mice and insect pests, and the final result is degenerate into sandy land.

The Ruo Ergai landscape project is a project under the natural resource system. "The forest grass department may pay more attention to the wetland grassland forest; if it is a water department, it may pay more attention to water." Xiang Guoping introduced. As a professional geological team, not only pays attention to the "soil" on the surface, but also the relationship between surface water and groundwater, as well as the relationship between people above the surface, gas and soil.

At present, the project has formulated 38 specific indicators, 39 sub -projects, and said to Guoping that it is mainly to choose from local conditions. "We have given up many existing technical means, which means that for each other, for example There is a way to treat grass, sand control is sandwich, and then there is a method of water treatment. "

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