A kind of ecological public welfare forest reconstruction method in Western Sichuan

A public welfare forest and ecological technology, applied in fertilization methods, agriculture, fertilization devices, etc., can solve the problems of easy destruction of understory vegetation, excessive canopy closure, soil erosion, etc., and improve the quality of the understory microenvironment. , maximize utilization efficiency, and promote the effect of natural recovery

Active Publication Date: 2020-04-03
CHENGDU INST OF BIOLOGY CHINESE ACAD OF S
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As of 2013, my country is the country with the largest plantation area in the world, with a total area of ​​6.93×107hm. 2 , volume 2.48×109m 3 , the development rate of plantations is 5.7 times the world average level (State Forestry Administration, 2005), most of which are ecological public welfare forests, but this part of plantations were originally designed according to the demand for timber, and later classified as ecological forests due to the division of ecological function zones. Functional protection needs, so the contradiction between supply and demand is prominent
The specific performance is that this kind of initial design density is high, most of the artificial forests are composed of single tree species, the forest hierarchy is simple, the stand canopy is too large, and the environment under the forest is dark and humid. After developing to the middle-aged forest stage, the growth of trees is generally Weakness, small understory vegetation coverage, low species diversity, poor biodiversity, insufficient soil acidification and fertilizer supply capacity, high risk of pests and diseases, low forest productivity, and low carbon sequestration capacity have become typical low-efficiency issues. Ecological public welfare forests, their ecological services and biodiversity protection functions urgently need to be improved and improved through reasonable approaches and methods
However, at this stage, there is obviously a lack of transformation techniques designed for this type of plantation, and traditional thinning methods are mostly used for transformation.
[0003] However, the traditional row or block thinning method has obvious disadvantages: (1) It disturbs the forest land greatly and easily causes secondary disasters, such as soil erosion, etc.
(3) The mechanized operation process is easy to damage the forest soil structure, such as compaction, etc.
(4) Understory vegetation is easily destroyed, and it is difficult to quickly restore surface vegetation
(5) The thinning intensity is high, and it is difficult to quickly restore the productivity of the arbor layer

Method used

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  • A kind of ecological public welfare forest reconstruction method in Western Sichuan
  • A kind of ecological public welfare forest reconstruction method in Western Sichuan
  • A kind of ecological public welfare forest reconstruction method in Western Sichuan

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Example 1: Effect of nutrition bag

[0061] In February, in the test field, 30 birch seedlings with a height of 0.5±0.1m were selected and randomly divided into three groups with 10 plants in each group, which were treatment group, positive control group and blank control group.

[0062] The birch saplings in the treatment group were raised in biodegradable nutritional bags for one month, and then transplanted into the soil with bags attached. Among them, the nutrient bag has built-in nutrient soil, and its mass composition is: volcanic ash compressed base nutrient soil 75%, potassium dihydrogen phosphate 6%, urea 7%, rooting powder 1%, and the balance is water. Dosage: Fill all the space in the bag except the root system.

[0063] The nutrient soil component of the treatment group is the conventional N, P, K compound fertilizer component. For the convenience of operation, the whole text of the present invention uses this component of nutrient soil. In actual applicat...

Embodiment 2

[0071] Embodiment two: the effect of bacillus subtilis preparation

[0072] In March, in the test field, 30 strong seedlings of Sequoia sichuanensis with a height of 0.5±0.1m were selected and randomly divided into three equal groups as the treatment group, the positive control group and the blank control group. Plant by the above-mentioned mode of introducing color-leaved tree species. Among them, the treatment group used yellow mud water pulp roots containing bacterial preparations; the positive control group used the same amount of yellow mud water pulp roots without bacterial preparations, and the blank control group did not receive pulp root treatment, and the rest of the planting methods and conditions were exactly the same. After 3 months, the growth of each group was observed, as shown in Table 2.

[0073] Table 2 Comparison of the growth of saplings in each group

[0074] growth situation treatment group positive control group Blank control group ...

Embodiment 3

[0076] Embodiment Three: Transformation of Spruce Plantation

[0077] (1) Implementation time and place: The technical implementation site is Fengyi Forest Farm (Dagou River Basin) of Maoxian Forestry Bureau. In mid-July, 2007, 30 hectares of low-efficiency spruce plantations were selected. The altitude of the experimental site was 2151m, the slope was 14.3, and the soil The type is mountainous dark brown soil.

[0078] (2) Background parameter investigation: The investigation time was at the end of the growing season in 2007, from September to October. Sampling surveys were carried out on 10% of the target area of ​​low-efficiency spruce plantation transformation, and the tree, shrub, and grass species in the center of the forest gap and the edge of the forest and the above-ground and underground biomass were investigated through the sample survey method; in the center of the forest gap and the control forest A miniature temperature and humidity automatic recorder (I-button ...

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Abstract

The invention belongs to the field of artificial forest structure transformation, and in particular relates to a method for transforming ecological public welfare forests in western Sichuan. The technical scheme adopted is: a method for the reconstruction of ecological public welfare forests in western Sichuan, including thinning open forests, introducing broad-leaved tree species and colorful-leaved tree species. The present invention has very little interference to the ecosystem of the artificial forest, can reduce the competition and self-consumption among the canopy trees, improve the net productivity of the trees, promote forest renewal, increase the structural complexity of the forest, and promote the composition and composition of the understory environment and soil diversity. Natural recovery of its food web relationship. The present invention maximizes the utilization efficiency of forest photosynthetic carbon through efficient utilization of multi-layered and three-dimensional environmental resources, and further promotes carbon accumulation in forest ecosystems on the basis of carbon emission reduction.

Description

technical field [0001] The invention belongs to the field of artificial forest structure transformation, and in particular relates to a method for transforming ecological public welfare forests in western Sichuan. Background technique [0002] As of 2013, my country is the country with the largest plantation area in the world, with a total area of ​​6.93×107hm. 2 , volume 2.48×109m 3 , the development rate of plantations is 5.7 times the world average level (State Forestry Administration, 2005), most of which are ecological public welfare forests, but this part of plantations were originally designed according to the demand for timber, and later classified as ecological forests due to the division of ecological function zones. Functional protection needs, thus causing a prominent contradiction between supply and demand. The specific performance is that this kind of initial design density is high, most of the artificial forests are composed of single tree species, the fores...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G17/00A01C21/00
CPCA01C21/005A01G17/005
Inventor 庞学勇包维楷杨兵胡斌杨婷惠闫晓丽王喆
Owner CHENGDU INST OF BIOLOGY CHINESE ACAD OF S
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