Technical method for recovering and reconstructing ecological public welfare forest of mountain area and sloping land

Abstract

The invention relates to a technical method for recovering and reconstructing an ecological public welfare forest in combination of natural recovering update and manual afforestation based on countryside diversity and local conservation of resources thereof. The technical method comprises the following steps that afforestation is carried out in planting areas in a sloping scrub according to the scheme of staggered arrangement of planting areas and retaining areas along contours, the planting areas play the role of promoting growth of target tree species, and retaining areas bring the local conservation of countryside biological diversity into play. Generally, in the slope of 15-25 degrees, the felling width of each planting area is usually designed to be 2.0-5m, and each scrub area with the width of 1.5-3m is retained. The initial afforestation density is controlled to be 1500-2100 trees per hectare, when a slope is relatively small (5-15 degrees), the initial afforestation density can be increased to 2300 trees per hectare, and the maximum afforestation density is not over 2500 trees per hectare. The technical method is carried out by utilizing the afforestation method of common pit planting, a planting pit is as deep as 40-50cm, the diameter of a pit surface is 30-40cm, and the pits are horizontally arranged or in a triangular shape.

Description

technical field [0001] The invention relates to a technical method for restoring and rebuilding a forest by organically combining in-situ conservation and afforestation of secondary shrubs on slope land in mountainous areas, and belongs to the field of forestry (afforestation and forest cultivation). Background technique [0002] Forest restoration refers to the restoration or reconstruction of destroyed or destroyed forests by protecting existing vegetation, closing mountains for afforestation or building artificial forests in areas suitable for forest restoration by using ecological principles to restore their biodiversity and ecosystem functions. . There are large areas of barren hills and slopes, shrubs and grasslands in my country, most of which are secondary shrubs formed by deforestation. Therefore, accelerating the restoration of secondary shrubs to forests on barren hills and slopes is the fundamental way to increase forest coverage in my country. [0003] The for...

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Problems solved by technology

The proposal should remove the dominant species composed of shrubs, such as thorny rose, raspberry, barberry, currant, scorpion, willow, etc. It is very difficult to afforestation directly, and the success rate is low; while the source of trees in the shrubs is insufficient, Seed settlement and growth conditions are poor, and natural recovery is slow after closing the mountain for afforestation; due to the large canopy density of shrubs, heavy litter coverage, slow decomposition of soil organic matter, insufficient soil fertilizer supply capacity, and fierce root competition of shrubs, resulting in nitrogen deficiency in the soil Phosphorus is poor, therefore, not only the preservation rate of direct afforestation is low, but also the growth of seedlings is slow and poor due to the constraints of shrubs

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