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Vegetation recovery method of subalpine orographical coniferous slash

A technology for vegetation restoration and coniferous forests, applied in the fields of botany equipment and methods, forestry, horticulture, etc., can solve the problems of low survival rate of seedlings, competition among species, low survival rate of seedlings, and inability to fully exert ecological benefits. Improve the technical content and level of technology, enhance the ability to resist drought and cold, and meet the effect of controlling soil erosion

Inactive Publication Date: 2007-05-02
CHENGDU INST OF BIOLOGY CHINESE ACAD OF S
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the project of "returning farmland to forest and grassland" is being implemented in the vast areas of the west of my country. However, the vegetation restoration technology adopted is facing the following problems: (1) The restoration model is single. The soil layer is thick or thin, the vegetation cover is dense or dense, and human disturbance and evolution history are different, which will inevitably lead to different types and types of forest remnants, and the environment is highly heterogeneous. At present, most of them adopt a single restoration model of directly creating coniferous forest species; (2) Insufficient emphasis on the restoration of forest ecological functions. The main purpose of forest restoration in the past was forest production, and the afforestation tree species was a single coniferous forest. A single pure forest may not only lead to soil degradation, but also cannot meet the requirements for soil erosion control and conservation. (3) The survival rate of seedlings is low. The dense shrubs and weeds in the subalpine coniferous forest remnants lead to intense competition among species, and the environmental stresses such as cold and drought caused by high altitude make the The survival rate of seedlings is low, generally no more than 60%, and even no more than 30% in years with severe and harsh environments
The existence of the above problems has seriously affected the vegetation restoration of sub-alpine coniferous forest remnants, resulting in the inability to fully exert its ecological benefits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1 Combination of coniferous tree species and shrub vegetation in subalpine coniferous forest traces above 3,500 meters above sea level

[0017] Combination mode: spruce+alpine willow, spruce+seabuckthorn

[0018] Proportion of mixed planting: no less than 1,500 spruce trees (holes) per hectare, and seabuckthorn or alpine willow cuttings are replanted in the gaps of the woodland, with a density of 2,000-3,000 trees per hectare.

[0019] Planting time: April-May every year

[0020] This mixed planting mode has accumulatively planted more than 4,000 mu in Shanzuba, Miyaluo Forest District, Li County, Aba Prefecture. In the past five years, the average survival rate of coniferous spruce has reached 85%, and its net growth rate of plant height and ground diameter has reached 28%. %above.

Embodiment 2

[0021] Example 2 Mixed combination of coniferous tree species and fast-growing broad-leaved tree species in subalpine coniferous forest traces at an altitude of 3000-3500 meters

[0022] Combination mode: spruce + birch

[0023] Mixed planting ratio: no less than 1,500 spruce trees (holes) per hectare, and birch seedlings are replanted in the gaps of the forest land, with a density of 2,000-3,000 trees per hectare.

[0024] Planting time: April-May every year

[0025] This mixed planting mode has accumulatively planted more than 2,000 mu in the rotten forest class of Miyaluo Forest District, Li County, Aba Prefecture. In the past five years, the average survival rate of coniferous spruce has reached 91%, and its net growth rate of plant height and ground diameter has reached 33%. %above.

Embodiment 3

[0026] Example 3 Mixed combination of coniferous species and fast-growing broad-leaved species and deciduous coniferous forest and evergreen coniferous forest in the subalpine coniferous forest trace at an altitude of 2500-3000 meters

[0027] Combination mode: spruce + maple, spruce + Japanese larch

[0028] Proportion of mixed planting: no less than 1,500 spruce trees (holes) per hectare, and maple and Japanese larch seedlings are replanted in the gaps of the woodland, with a density of 2,000-3,000 trees per hectare.

[0029] Planting time: April-May every year

[0030] This mixed planting mode has accumulatively planted more than 4,000 mu in Jiabigou in Miyaluo Forest District, Li County, Aba Prefecture. In the past five years, the average survival rate of coniferous spruce has reached 84%, and its net growth rate of plant height and ground diameter has reached 35%. %above.

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Abstract

A method for recovering the vegetation in the trace field of subalpine orographical coniferous slash features that a kind of orographical coniferous trees and kind of broad-leaved trees, which have different ecologic and biologic characteristics, are planted in mictic mode, and before planting, their roots are dipped in abscisic acid or survival agent.

Description

technical field [0001] The invention relates to a method for restoring vegetation in subalpine coniferous forest remnants, in particular to a method for reverting vegetation in subalpine remnants with harsh ecological environment (cold and drought). Background technique [0002] The subalpine coniferous forest in Southwest my country is the second largest forest area in my country and the main body of the forest in the upper reaches of the Yangtze River. It not only has important functions of water conservation and soil and water conservation, but also a treasure house of various biological resources. It is directly related to the safety of the ecological environment in the western region. and sustainable socio-economic development. Due to years of excessive logging, coupled with long-term deforestation and overgrazing and other factors, the forest stock volume has declined significantly. At present, the project of "returning farmland to forest and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G23/00A01G1/00
Inventor 刘庆陈劲松林波吴彦尹华军何海
Owner CHENGDU INST OF BIOLOGY CHINESE ACAD OF S
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