Wetland rejuvenation method for shell dikes of yellow river delta by utilizing plants

Abstract

The invention discloses a wetland rejuvenation method for shell dikes of the yellow river delta by utilizing plants. The wetland rejuvenation method comprises following steps: adopting a survey method for belt transects and quadrats to measure an altitude in a selected wetland rejuvenation plot; record topographic and geomorphic conditions the sealand distance, sea wave erosion and human disturbance probability; collecting soil and measuring physicochemical properties of soil, and counting above features by utilization of a CCA order; dividing areas based on habitat conditions of selected wetland rejuvenation plots; screening adaptive plants and adaptive restoration species in all habitat areas; eliminating plants with importance value less than five and ordering remaining species in a CCA order; and selecting adaptive plants in all habitat areas and recovering plants by zoned plantation. The wetland rejuvenation method for shell dikes of the yellow river delta by utilizing plants has following beneficial effects: by following the principle of adjusting measures to local conditions, targeted investigations are made on wetland regions; the problem of vegetation degradation in shell dikes of the yellow river delta is effectively solved; and the wetland rejuvenation method is high in operability, low in cost and maintenance cost and obvious in landscaping and ecological functions and has great social benefit and environmental benefit.

Description

technical field [0001] The invention relates to the technical field of wetland plant restoration, in particular to a method for restoring shell embankment wetlands in the Yellow River Delta with plants. Background technique [0002] Coastal beach wetlands are the forefront ecological defense line of coastal wetlands. As a type of ecotone where water and land meet, its unique edge effect makes its structure and function complex, and its habitat is extremely harsh. It is vulnerable to wave erosion and seawater flooding. At the same time, it has the habitat characteristics of shallow groundwater table, frequent sea breeze and sand burial, high soil salinity, scarce fresh water resources and poor nutrients. It is one of the important ecosystems in the coastal zone. The shell embankment (chenier) coast of the Yellow River Delta on the southwestern coast of Bohai Bay in my country is one of the three remaining relatively well-protected shell embankment wetland ecosystem types in t...

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Problems solved by technology

[0005] Aiming at the above-mentioned problem that the coastal beach wetland vegetation is difficult to restore, the purpose of the present invention is to provide a method for rapid recovery of coastal wetland plants on the shellfish beach. Vegetation restoration technology can effectively solve the problem of vegetation degradation or even difficult recovery in fragile coastal beach wetland ecosystems. It has the characteristics of strong operability, low cost, low maintenance fee, and remarkable landscape and ecological functions. It can significantly restore or improve fragile coastal beach wetlands. Ecosystem with high social and environmental benefits

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