RU2035853C1 - Method for improvement cutting of trees in protection forest strips - Google Patents

Abstract

FIELD: forest breeding. SUBSTANCE: narrow corridors are marked in the forest strip for 100% removal of trees. In order to preserve their protective properties, they have the form of convex (concave) lines spaced at 30 m parallel to one another. 7 years after this cutting, the trees are cut in an intersecting direction but also by curvilinear parallel corridors. EFFECT: higher efficiency. 4 dwg

Description

 The invention relates to forestry, and in particular to methods of thinning in protective forest belts, and can be used in field protection and reclamation afforestation.

 Closest to the proposed technical essence is a method of thinning in protective forest belts [1], which involves the continuous removal of trees in narrow corridors and selective in inter-corridor spaces. This embodiment of the method extends the mechanization of technological operations for felling, primary cleaning, stacking and tree removal.

 However, the formation of rectilinear corridors in the protective stands increases the flow rate of the treated plantings and reduces the efficiency of flow regulation on the slopes of the cantilever and gallant networks.

 The purpose of the invention to increase the protective functions of forest belts and improve the conditions for their growth.

 To do this, when the trees are completely removed, narrow corridors are formed parallel to either along convex or concave curved lines, and during the first logging, corridors are formed in one direction, and in the second, in the direction intersecting with the first.

 This embodiment of the method reduces the blowability of forest belts and increases the regulation of runoff on the slopes of the hydrographic network.

 In FIG. 1 shows protective stands before logging, top view; figure 2 the same, after cutting trees in the intended narrow corridors having either a convex or concave curved line; figure 3 the same, after the removal of trees lagging behind in the inter-corridor spaces; in FIG. 4 the same, after cutting through the second corridors intersecting with the first.

 Figure 1-4 shows the cultivated area 1 of forest stands; trees 2 growing on the site; the removed trees 3 in the laid narrow corridors of either a convex or concave curved line; the first parallel formed narrow corridors 4 either along convex or concave curved lines; 5 trees removed in inter-corridor spaces; second corridors 6 intersecting with the first.

 The proposed method of thinning in protective forest belts is as follows.

 On site 1 to be treated, the state of trees 2 is determined and the first narrow corridors are marked 4. Self-propelled or portable cutting equipment of the type: LP-2, LP-19, Woodpecker-1, MP-5 Ural is delivered to the mastered area. , "Secor-3", etc., which removes trees 3 in the marked corridors. Then, in cleared corridors, either trees 5 and oppressed shrubs in inter-corridor spaces are cut by the same mechanisms along either convex or concave curved lines.

 6-10 years after thinning plantations, proceed to the second stage of reconstruction. In this case, the second narrow corridors 6 are formed, intersecting with the first.

The proposed method was tested in reclamation plantations of Crimean pine at the age of 10 years. The cultures were created on a slope plot with a steepness of 9-14 ^about . Landing is made horizontally to the main slope. The distance between the trees in the row is 0.8-1.0 m, and between the rows 2.4 ± 0.1 m. The length of the plot across the slope is 320 m and the width is 30 m.

In the winter of 1983, in the designated reclamation planting, marking of narrow corridors with a convex curved line 3.0 ± 0.2 m wide and continuous cutting of trees in them with a MP-5 Ural chainsaw was made. The distance between the corridors was limited to 30 m. The felled trees were stacked in bundles in the arranged corridors, from where the TPR-1 skidder mounted on the T-74 tractor was transported to the upper warehouse. With this distance between the corridors, the volume of wood pulp removed from the stands was 9.4%
Then, after clearing the first corridors, trees that were stunted were removed in the inter-corridor space. This amounted to 27.3% of the cut trees of the total.

In the winter of 1990, the cutting of the second narrow corridors intersecting with the first was carried out. When installing the second corridors, the volume of trees to be removed is reduced to 6%
This embodiment of the method expands the level of mechanization of technological operations during thinning of plantations created on slope sections. Eight-year observations of reclamation plantations showed that the method of forming corridors contributes to better snow retention and regulation of runoff, while the forest environment is stabilized, which improves the growing conditions of abandoned trees.

Claims (1)

 METHOD FOR CARING FELLING IN PROTECTED FOREST BANDS, including continuous removal of trees in narrow corridors and selective in inter-corridor spaces, characterized in that, in order to increase the protective functions of forest belts and improve the conditions for their growth, with continuous removal of trees narrow corridors form parallel or convex, or along concave curvilinear lines, the corridors being formed in the same direction during the first logging, and in the intersecting with the first direction during the second.

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