Estuary wetland mangrove forest ecological rehabilitation afforestation method

Abstract

The invention discloses an estuary wetland mangrove forest ecological rehabilitation afforestation method. The estuary wetland mangrove forest ecological rehabilitation afforestation method comprises the steps that a rehabilitation test area is divided into an upper stream, a middle stream and a lower stream; soil covered by regional advantage mangrove trees at different sea levels is selected as study objects, and the vacant field and a bare field serve as a reference; the response characteristics of different areas, different sea levels, the photosynthetic characteristics of different plants and chlorophyll fluorescence characteristics to an alternative flooding and high-salt environment, the response of dynamic growth of different mangrove forest vegetations to the alternative flooding and high-salt environment, the response of a plant-soil system to soil sedimentation, salt and alkalinity, the response of soil nutrients affected by the plants to the wetland environment, and the response characteristics of soil enzymes to the wetland environment are analyzed in sequence. The most comfortable living environment is sought for the estuary wetland mangrove forest plants according to the dynamic and static adaptation characteristics to the environment of different advantage mangrove forest plants in different areas. According to the estuary wetland mangrove forest ecological rehabilitation afforestation method, the plants adapting to the different wetland environments can be accurately selected, and the method can be used for ecological rehabilitation afforestation of an estuary wetland.

Description

Technical field: [0001] The invention belongs to the field of environmental protection of estuary wetlands, and in particular relates to a technical method for ecological restoration and afforestation of estuary wetlands. Background technique: [0002] Wetlands are one of the ecosystems with important environmental functions and the habitats of various organisms on the earth. The wetland environment is composed of wetland hydrology, wetland biogeochemical cycle, and the adaptation and transformation of organisms to the wetland. In the wetland environment, various factors interact and depend on each other to form the overall function of the wetland environment. As a transition zone between water and land, wetlands have huge environmental regulation functions and ecological benefits. Together with forests and oceans, wetlands are known as the three major ecosystems in the world. The means of production and living plays an irreplaceable role in other systems. It is one of the ...

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Problems solved by technology

[0005] According to a large number of studies, the Quanzhou Bay estuary wetland has high spatial heterogeneity in environmental quality factors such as salinity, pH, and nutrient elements. At the same time, the estuary wetland has diversity, rarity, and vulnerability compared with other wetlands at home and abroad. , typical characteristics, the shoreline is tortuous, and the rapid siltation in the bay makes the estuary wetlands volatile and difficult to plan rationally. However, the existing estuary wetland restoration technologies at home and abroad are mainly for lakeside and estuary wetlands, and the methods are basically physical , chemical or biological methods to treat polluted wetland soil or water bodies, these single methods often do not take into account the slow growth of mangrove forests and the adaptability of different mangrove tree species to the hydrology, tide, salinity and other environments in the ecological restoration of mangroves The pursuit of concentrated contiguous areas leads to problems such as low survival rate of mangroves, slow growth, serious pests and diseases, and lack of diversity in the later stages of wetland ecological restoration.

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