Vegetation vertical structure optimizing method for improving ecological function of south soil erosion badland

Abstract

The invention provides a vegetation vertical structure optimizing method for improving an ecological function of a south soil erosion badland. The method includes the following steps of screening thespecies, wherein the restoration species suitable for the south soil erosion badland is screened out according to the species screening principle by comprehensively analyzing the common species for restoring different soil erosion badland vegetations in a south typical soil erosion area and the planting mode; collaborating the species, wherein the proper species on an aboveground crown layer and underground root system vertical structure of the south soil erosion badland with different soil parent materials are collaborated in the restoration species according to the ecological site principleby collecting the species compositions in an early succession stage of an area slope ecological system in combination with the biological properties of the restoration species; conducting reasonable establishment, wherein a plant colony of a tree and bush vertical structure is established according to the collaborated proper species. By means of the method, the soil structure and nutrient state can be improved, the restoration of the earth surface vegetation of the soil erosion badland is promoted, and the ecological function of the south soil erosion badland is rapidly improved.

Description

technical field [0001] The invention relates to the technical field of ecological environment management, in particular to a vegetation vertical structure optimization method for improving the ecological functions of soil erosion and bad land in southern China. Background technique [0002] The southern part of my country is located in the tropics and subtropics, with a vast territory, warm climate, rich water and heat resources, and superior location conditions. It is an important base for tropical and subtropical economic fruit, economic crops and grain production. But for a long time, due to irrational land use and single management mode, forest resources have been severely damaged, and soil erosion has been developing day by day. The southern region has become the most serious soil erosion area after the Loess Plateau in my country, among which the red soil area is the most widely distributed. most serious. At the end of the 1950s, the original vegetation in the southern...

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Problems solved by technology

The traditional control of soil erosion in the south often uses some conventional soil and water conservation grass species. Although it can exert outstanding control effects in just a few months, but because the soil in the soil erosion area is too barren, the rapid "grass" of planting grass The “greening effect” is often difficult to maintain

At present, the control of soil erosion in southern China emphasizes vegetation restoration, but less consideration is given to the reasonable distribution of vegetation vertical structure, and there are adverse characteristics such as single species of afforestation, simple stand structure, weak adaptability of ecosystem to climate change, and low ecological function.

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