Method for vegetation construction and combined restoration of coastal heavy saline-alkali land

Abstract

The invention provides a method for vegetation construction and combined restoration of coastal heavy saline-alkali land. The method comprises the four steps of S1, soil improvement, wherein ridging and raising are conducted, and a strip field is built; S2, plant configuration, wherein plant materials suitable for local growth are selected, and evergreen tree species and deciduous tree species arereasonably matched according to seasonal aspect variation characteristics; S3, vegetation construction, wherein firstly, halophytes are planted, vegetation coverage is increased, and soil traits aregradually improved, woody plants are planted 1-2 years later, and a good plantation ecosystem is created; S4, cultivating management. Through the four steps, a complete operation system is formed forthe saline-alkali land from improvement to vegetation construction, and a feasible and efficient method is provided for the improvement of the heavy saline-alkali land in a coastal area.

Description

technical field [0001] The invention belongs to the technical field of ecological restoration of degraded land and ecological engineering, and in particular relates to a method for vegetation construction and joint restoration of coastal heavily saline-alkali land. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Soil salinization (soil salinization) refers to a soil change in which the salt ions in the soil increase or the soluble salt ions continue to accumulate on the soil surface, changing the physical and chemical properties of the soil, and having a certain harmful effect on the growing plants. process. Soil salinization is formed under certain natural conditions such as climate, terrain, soil, vegetation, and hydrogeology. Flood, waterlogging, and drought disasters, diversion of rivers, human activities, changes in land use system...

AI Technical Summary

Problems solved by technology

In fact, depending on the environment (climatic conditions, geographical conditions, etc.) The accumulation of a large amount of salt leads to the deterioration of the physical properties of the soil in saline-alkali land; and the soil organic fertilizer source is insufficient, the soil gleization is strong, the permeability is poor, the soil is saturated and extracted with high salinity, and soil evaporation causes serious salt accumulation in the surface soil

[0006] At present, the traditional single treatment method is not effective. The fundamental way to solve this problem is to build vegetation and gradually improve the soil structure on the basis of fully understanding the formation mechanism and distribution pattern of saline-alkali land and the principles of restoration ecology. Realize ecological restoration