Ecological restoration method for degraded carex appendiculata wetland

Abstract

The invention provides an ecological restoration method for degenerated carex appendiculata wetland, and belongs to the technical field of ecological restoration methods for the wetland. The method comprises the steps of 1, degeneration degree diagnosis of the carex appendiculata wetland, wherein the degeneration degree of the carex appendiculata wetland is determined according to the comprehensive dominance index of dominant species, and the comprehensive dominance index reflects the position and role of the species in a community; 2, restoration of the slightly-degenerated carex appendiculata wetland; 3, restoration of the moderately-degenerated carex appendiculata wetland; 4, restoration of the heavily-degenerated carex appendiculata wetland, wherein moisture regulation and control andplant transplanting are combined, firstly, irrigation is conducted, irrigation is conducted in the last ten days of May, the water level of the earth surface is controlled to be 5-10 cm, then plant transplanting is conducted in August, carex appendiculata is selected as plants, a hole planting mode is adopted with the cluster as the unit, every 30-50 plants serve as one cluster, and the line spacing is 50-100 cm; irrigation is conducted in the middle and lower ten days of May in the next year, and the water level of the earth surface is controlled to be 10-15 cm; 5, maintenance and managementin the later period, wherein irrigation is mainly conducted, the water level of the earth surface is controlled, and moisture regulation and control is conducted.

Description

technical field [0001] The invention relates to an ecological restoration method for a degraded Carex gray veins wetland, and belongs to the technical field of wetland ecological restoration methods. Background technique [0002] Wetlands are an important part of the terrestrial ecosystem, known as the "kidney of the earth", the "storage" and "purifier" of water resources, and the habitat, migration, and overwintering necessary for many rare and endangered species, especially endangered and rare waterfowl. It has multiple functions such as protecting biodiversity, regulating runoff, improving water quality, and regulating microclimate. [0003] However, with the needs of economic and social development, human activities represented by agricultural reclamation and grazing have led to a sharp decline in the wetland area. Taking the Sanjiang Plain wetland as an example, its natural wetland area has decreased from 5.34 million hectares in the early days of the People's Republic...

AI Technical Summary

Problems solved by technology

Although China started relatively late in the study of wetland ecological restoration and reconstruction, it has developed rapidly, especially in recent years, the research on ecological restoration and reconstruction of lake wetlands, river wetlands, urban wetlands, and oilfield polluted wetlands has developed rapidly. Some effective work has been carried out, but there is still a lot of work to be done on wetland ecological restoration and reconstruction, especially the lack of mature and applicable key technologies and methods in wetland vegetation reconstruction