Permafrost region suddenly-changing deteriorated grassland recovery method

Abstract

The invention provides a permafrost region suddenly-changing deteriorated grassland recovery method. The method comprises the steps that deteriorated grassland is turned over, and an organic surface soil layer made artificially is laid; an organic substance layer is laid at the bottom of the organic surface soil layer and used for protecting a lower layer of frozen soil; grass seeds are additionally sowed in the organic surface soil layer. By adopting the permafrost region suddenly-changing deteriorated grassland recovery method, a soil and nutrient basis can be provided for vegetation regeneration by turning over the deteriorated grassland and laying the organic surface soil layer. In addition, the organic substance layer is laid at the bottom of the organic surface soil layer, the frozensoil layer can be protected under the heat insulation effect of the organic substance layer, and the effect of restoring frozen soil ecology is played. Later rotting of the organic substance layer can provide fertilizers for vegetation regeneration, vegetation restoration is facilitated, meanwhile a lower layer of frozen soil is protected, ecological stability is facilitated, and the method is lower in cost, simple in operation and high in reliability.

Description

technical field [0001] The invention relates to the technical field of grassland ecological management, more specifically, to a method for restoring abruptly degraded grassland in permafrost regions. Background technique [0002] Alpine grassland is the most widely distributed vegetation type on the Qinghai-Tibet Plateau, but because the ecosystem is relatively sensitive and fragile, sudden changes in meteorological conditions or human disturbance can easily cause irreversible damage. For example, in thermal melting landslides, high-intensity rainfall in a short period of time causes the displacement of steep hillside turf to form patchy bare land; and in the process of construction and maintenance of Qinghai-Tibet Railway and highways, soil is taken from projects along the way to construct and maintain subgrade slopes In a short period of time, the surface soil structure will be destroyed, the original alpine vegetation will be lost, and then the degraded grassland will be ...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method for restoring abruptly degraded grassland in permafrost regions that overcomes the problems of permafrost regions that cannot take into account protection, cost, and effectiveness, or at least partially solves the above problems.