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

A mountainous slope and ecological technology, applied in forestry, afforestation, climate change adaptation, etc., can solve the problems of difficulty in direct afforestation, poor seed settlement and growth conditions, and large litter coverage, etc., to achieve good diversity conservation and ecological services function, saving afforestation management costs, and reducing afforestation costs

Inactive Publication Date: 2013-11-27
CHENGDU INST OF BIOLOGY CHINESE ACAD OF S
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  • Abstract
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AI Technical Summary

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

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] This technical method has been tested in the Dagou River Basin of Maoxian County, and more than 2000 mu of experimental demonstration forests have been formed, which provides field evidence.

[0024] (1) Natural conditions and degraded shrubs in the test area

[0025] The experiment was carried out at the Maoxian Mountain Ecosystem Orientation Research Station of the Chinese Academy of Sciences, which is located in the middle of the Dagou River Basin in Fengyi Town, Maoxian County. According to the climate monitoring of the station (1820m above sea level) for many years (1989-1994), the average annual temperature is 8.9°C, and the average annual precipitation is 900mm. The annual evaporation is 795.8mm, belonging to the warm temperate climate, belonging to the warm temperate climate. The experimental demonstration area is at an altitude of 1760-2200m, with a sunny slope (north direction) and an average slope of 18-25°. The soil is leached cinnamon or brown soil develop...

Embodiment 2

[0028] Embodiment 2: Implementation effect

[0029] According to years of comparison and monitoring research on the plots where this technical method is applied and the control plots, it is found that this technical method has obvious advantages.

[0030] (1) Improve surface microclimate conditions. Summer monitoring shows that the average daily surface temperature of the afforestation plantation zone is 0.6-2.6°C higher than that of the reserved zone, while the monthly average temperature is 0.5-2.2°C higher; the air humidity at a height of 50cm drops from 80-90% to 70-88%; The strength is increased by 30 to 50 times. This technology significantly changes the cold, wet and dark local micro-habitat to a micro-environment more suitable for tree growth, so it can accelerate litter decomposition and nutrient release, and improve soil fertility (see below), but the climate of the entire environment does not change significantly.

[0031] (2) Improve soil fertility. According to...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G23/00
CPCY02P60/40Y02A40/22
Inventor 包维楷何其华潘开文丁建林庞学勇
Owner CHENGDU INST OF BIOLOGY CHINESE ACAD OF S
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