Method for improving northern plain river riparian zone gravel soil

Abstract

The invention belongs to the technical field of ecological restoration, and particularly relates to a method for improving northern plain river riparian zone gravel soil. The method comprises the steps that in the river dry season in spring, protruding sand piles of a riparian zone are leveled, the riparian zone is divided into two districts, the first district is located between the normal water level and the high water level, the second district is located between the normal water level and the lower water level, and degradable cylindrical environmentally-friendly materials are laid and fixed according to grids; according to hydrologic conditions of a river, 3-5 types of classic wetland vegetation is screened in the flood plain area complete in vegetation condition, and the screened vegetation is arranged in the corresponding area according to the adaptive hydrologic conditions. Accordingly, cheap environmentally-friendly materials are adopted to be matched with the vegetation, the materials and the vegetation are set up on the gentle slope of the riparian zone to be protected and fixed, river silt is intercepted, the capacities of creating land with silt and controlling soil erosion are enhanced, the region suitable for growth of plants is expanded, the environmental biomass is improved, ecological system material circulation is recovered, and a natural environment which is natural and stable in ecological structure is gradually formed.

Description

technical field [0001] The invention belongs to the technical field of ecological restoration, in particular to a method for improving sand and gravel soil along river banks in northern plains. Background technique [0002] The main factors of soil degradation in the damaged habitats of rivers in the northern plains of my country are human disturbance, disorderly sand mining, illegal reclamation and unreasonable engineering construction, which lead to the disappearance of vegetation in the riverside zone, the expansion of bare land, and the phenomenon of soil erosion and soil degradation can be seen everywhere , seriously disrupting the stability of the river ecosystem. The exposed sandy land caused a sharp decline in the biodiversity of the riparian zone, and the continuous degradation of the material circulation and supply capacity of the ecosystem lost the functions of water conservation, soil and water conservation, flood resistance, runoff regulation, flood storage and d...

AI Technical Summary

Problems solved by technology

Due to unstable hydrodynamics and complex environmental influences, few studies have been reported on the improvement of river gravel soils

At present, the existing restoration methods often use large-scale mechanical land leveling, land reclamation with foreign soil, and transplanting vegetation, etc. The survival rate of vegetation is low, consuming a lot of manpower and material resources, and the operation method is complicated and the feasibility is low.