CN102907197A - Recovery method for subalpine forest meadow soil under Changbai Mountain birch forests - Google Patents

Abstract

The invention belongs to the technical field of ecological environment engineering and particularly relates to a recovery method for subalpine forest meadow soil under Changbai Mountain birch forests. The aim of recovering the subalpine forest meadow soil under the Changbai Mountain birch forests is achieved by artificial soil synthesis and adjustment, soil seed bank construction, soil protection and killing of exotic species in the soil and the like in the method. The method is simple, easy to popularize and extremely good in ecological benefit.

Description

The recovering method of the orohylile meadow brown soil of a kind of Changbai Mountain Yue Hua sylvan life

Technical field

[0001] the invention belongs to the ecotope field of engineering technology, be specifically related to the orohylile meadow soil of a kind of Changbai Mountain Yue Hua sylvan life

The recovering method of earth.

Background technology

The Changbai Mountain is positioned at Jilin Province's region of Southeast, 127 ° of 40'～128 ° 16' of east longitude, the area between 41 ° of 35'～42 ° 25' of north latitude.Belong to the continental monsoon climate in temperate zone, have obvious vertical climatic belt.Because affected by special geological surrounding, form unique climatic characteristic, have dried in spring windy, summer is warm rainy, and autumn is nice and cool foggy, the very long characteristics of cold in winter.Height above sea level vertical distribution from low to high the soil of 4 types: height above sea level 700-1100m belongs to dark brown forest soil, and 1100-1800m is distributing, and to be that montane meadow soil, 2000m are above be tundra, mountain region soil for brown needle soil (mountain brown forest soil), 1800-2000m.

Since the nineties; along with the rise of tourist industry, built many commercial buildings in the Mt. Changbai Nature Reserve Area, destroyed original vegetation and vegeto-animal living environment in the protection zone; had a strong impact on the primitiveness of natural landscape in the protection zone, the environment of protection zone has been caused pollution.Given this, the commercial buildings thing is being removed in the protection zone, to recover natural vegetation.

In the construction waste ground that forms after demolishing buildings, primary soil is destroyed, and particularly A layer (humus layer) disappearance, therefore will carry out revegetation, at first must solve required soil issues.

One of soil that destroys is the montane meadow soil.In the nature reserve, forbid adopting soil, soil moved in to improve the original is originated can only be from outside the district.Protection zone, Changbai Mountain periphery is the basalt tableland, has grown common intrazonality white muddy soil, peat soil and the meadow soil in humid region, temperate zone on the tableland, and the dark brown earth of zonality is rare.Because white muddy soil, meadow soil, peat soil and montane grassy marshland penus differently are with, physicochemical property differs greatly, and can't directly carry out the soil displacement.Can only take white muddy soil, meadow soil, peat soil as raw material, by artificial synthetic, realize substituting the orohylile meadow soil across the displacement of area soil.

 

Summary of the invention

The present invention seeks to as realizing that under high Altitude Region extreme weather conditions ecological recovery provides a kind of synthetic soil earth of imitative nature.

Technical solution of the present invention comprises:

1, soil physico-chemical property is synthetic

(1) raw material is chosen

(2) artificial soil is synthetic

(3) soil acid adjustment

(4) soil is transferred fertile

2, soil seed bank, soil seed pool construction

3,Soil protection

(1) woods, filling, careless association schemes

(2) soil defence net scheme

4,In soil, denizen kills

(1) sterilization of pathogen

(2) control of insect invasion

(3) control of herbaceous plant invasion

The invention has the beneficial effects as follows:

(1) synthesize available soil in the ecological recovery in the inferior high lofty mountains birch woods in Changbai Mountain, forest meadow soil area.

(2) set up local soil seed bank, soil seed pool, realize final natural vegetation restoration.

(3) less denizen invasion.

(4) conserve water and soil.

(5) method is simple, easily promotes, and can obtain ecological benefits preferably.

Embodiment

Concrete steps of the present invention, condition are as follows:

1), soil physico-chemical property is synthetic

(1) raw material is chosen

Be positioned at the farmland and choose the white muddy soil soil of top layer 20cm left and right, humus content more than 6%; Choose 20cm left and right, meadow soil top layer soil, humus content more than 12%.

(2) artificial soil is synthetic

White muddy soil, meadow soil layering are laid, and first lay the 25cm white muddy soil, its upper berth 20cm meadow soil, (synthetic soil layering structure is near the montane meadow soil).

(3) soil acid adjustment

Because the raw material that synthesize soil are acid, and artificial synthetic orohylile meadow soil must be neutrality or alkalescent.In order to carry out smoothly revegetation, must carry out acid adjustment to the acid ground raw material.Liming or limestone powder are tradition and the effective methods that reduces soil acidity.Use active acid and the acid of latent property that lime can sweetening of the soil, the production precipitation of hydroxide effectively reduces rapidly the acidity of acid ground, can also increase the content of exchangeable calcium in soil.Test the lime stone that mixes 0.2 gram in the soil that shows every kilogram, the pH value improves 0.5 unit, can select 0.4g/kg.

(4) soil is transferred fertile

K content to the artificial soil that synthesizes is on the low side, adopts the fertile mode of people's wage adjustment to solve.Apply 2.5kg potash fertilizer in every cubic metre of synthetic soil, fully mix.

), the soil seed bank, soil seed pool construction

Gather the seed of Yue Hua, alder, Sorbus alnifloria, Deyeuxia angustifolia, wild carraway, willow herb, scatter seeds on topsoil according to the structure of natural world soil seed bank, soil seed pool.By weight, Yue Hua: alder: Sorbus alnifloria: Deyeuxia angustifolia: wild carraway: willow herb=2:2:1:10:10:5 calculates Yue Hua 0.32 g/ ㎡ by 10% germination rate, alder 0.48 g/ ㎡, Sorbus alnifloria 0.5 g/ ㎡, Deyeuxia angustifolia 0.35 g/ ㎡, wild carraway 5 g/ ㎡, willow herb 2.5 g/ ㎡, 9.15g/ ㎡ seed altogether.

The soil seed bank, soil seed pool construction on level land is that above-mentioned six kinds of seeds mix rear 9.15g/ ㎡ seed in proportion and top layer sylvan life soil 250 grams (dry weight) fully mix rear uniform broadcasting at upper soll layer.

Domatic soil seed bank, soil seed pool construction is to add the sylvan life soil that contains 9.15g/ ㎡ seed to form to plant below the central core of soil defence net to give birth to layer.

), soil protection

Take conventional project and biological control measure to carry out soil protection.

(1) woods, filling, careless association schemes

According to the site type of Song Hua River Grand Canyon, implement the scheme that woods is filled with careless combination.Be Yue Hua, alder, Sorbus alnifloria, Deyeuxia angustifolia, wild carraway in conjunction with plantation, take full advantage of nutrient component, obtain maximum energy, potentiality that performance is maximum and effectively defend the soil erosion.

(2) soil defence net scheme

The soil defence net is comprised of four-layer structure, central core is for to spin by fibrous material the web that bullet forms, layer has one deck braiding reinforcing mat thereon, be nested with below central core by the planting of compositions of mixtures of seed and fertilizer and give birth to layer, following one deck is nonwoven again, and four-layer structure forms an organic whole.Wherein web spins bullet by the low-density random fashion and forms, and thickness is 3～50mm, and voidage is 98～85%.

The soil defence net covers soil surface energy fixing soil particle, can form the water guide layer when running into precipitation and get rid of soil ponding, and soil protection is not etched.The mixture that plant seed and fertilizer consist of is to set according to soil seed bank, soil seed pool.Biotechnology as preventing the soil erosion can be used for the gradient larger, the zone of severe water and soil erosion.

), denizen kills in soil

(1) sterilization of pathogen

Soil is the main place of most pathogen survivals, needs sterilization.Soil disinfection was carried out in early spring, can adopt formalin sterilization, i.e. formalin: water=1: 40, land area consumption be the 10-15 liter/square metre or formalin: water=1: 50, land area consumption be the 20-25 liter/square metre.

(2) control of insect invasion

Spring underground insect be raised to the earth's surface harm phase, pour water in right amount, suppress underground insect.In summer, mainly adopt the method for artificial capture method, can catch and kill with clap net when the insect population radix is little; When the insect generating capacity is larger, can adopt chemical control, at first adopt public nuisance-free agricultural chemicals.Insect is contained the phase of sending out, 500 times of liquid of available 90% chlorophos, and the desinsection scope is wide, and is effective.In the fall, broad irrigation can not be buried insect and is pupated, or improves the lethality of the insect that pupates.

(3) control of herbaceous plant invasion

The herbaceous plant that germinates in the first three years employing artificial weeding mode of engineering construction is removed external soil.

Claims (2)

1. the recovering method of the orohylile meadow brown soil of a Changbai Mountain Yue Hua sylvan life is characterized in that concrete steps, condition are as follows:

, soil physico-chemical property is synthetic:

(1) raw material is chosen:

Be positioned at the farmland and choose the white muddy soil soil of top layer 20cm left and right, humus content more than 6%; Choose 20cm left and right, meadow soil top layer soil, humus content more than 12%;

(2) artificial soil is synthetic:

White muddy soil, meadow soil layering are laid, and first lay the 25cm white muddy soil, its upper berth 20cm meadow soil;

(3) soil acid adjustment:

Mix the lime stone of 0.4 gram in the soil of every kilogram;

(4) soil is transferred fertile:

Apply 2.5kg potash fertilizer in every cubic metre, artificial synthetic soil, fully mix;

2),Soil seed bank, soil seed pool is built:

Gather the seed of Yue Hua, alder, Sorbus alnifloria, Deyeuxia angustifolia, wild carraway, willow herb, scatter seeds on topsoil according to the structure of natural world soil seed bank, soil seed pool, by weight, Yue Hua: alder: Sorbus alnifloria: Deyeuxia angustifolia: wild carraway: willow herb=2:2:1:10:10:5, calculate Yue Hua 0.32 g/ ㎡, alder 0.48 g/ ㎡ by 10% germination rate, Sorbus alnifloria 0.5 g/ ㎡, Deyeuxia angustifolia 0.35 g/ ㎡, wild carraway 5 g/ ㎡, willow herb 2.5 g/ ㎡, be total to 9.15g/ ㎡ seed

The soil seed bank, soil seed pool construction on level land is that above-mentioned six kinds of seeds mix rear 9.15g/ ㎡ seed in proportion and top layer sylvan life soil 250 grams (dry weight) fully mix rear uniform broadcasting at upper soll layer;

Domatic soil seed bank, soil seed pool construction is to add the sylvan life soil that contains 9.15g/ ㎡ seed to form to plant below the central core of soil defence net to give birth to layer;

3),Soil protection:

(1) woods, filling, careless combination:

Implement woods, filling, careless combination, namely Yue Hua, alder, Sorbus alnifloria, Deyeuxia angustifolia, wild carraway in conjunction with plantation, take full advantage of nutrient component, obtain maximum energy, potentiality that performance is maximum and effectively defend the soil erosion;

(2) soil defence net:

The soil defence net is comprised of four-layer structure, central core is for to spin by fibrous material the web that bullet forms, layer has one deck braiding reinforcing mat thereon, be nested with below central core by the planting of compositions of mixtures of seed and fertilizer and give birth to layer, following one deck is nonwoven again, and four-layer structure forms an organic whole;

4),The killing of denizen in soil:

(1) sterilization of pathogen:

Soil disinfection was carried out in early spring, can adopt formalin sterilization, i.e. formalin: water=1: 40, land area consumption be the 10-15 liter/square metre or formalin: water=1: 50, land area consumption be the 20-25 liter/square metre;

(2) control of insect invasion:

Pour water in right amount in spring, suppress underground insect, in summer, adopt the method for artificial capture method, can catch and kill with clap net when the insect population radix is little; When the insect generating capacity is larger, can adopt chemical control, in the fall, broad irrigation can not be buried insect and is pupated;

(3) control of herbaceous plant invasion:

The herbaceous plant that germinates in the first three years employing artificial weeding mode of engineering construction is removed external soil.

2. the recovering method of the orohylile meadow brown soil of a kind of Changbai Mountain Yue Hua sylvan life as claimed in claim 1, is characterized in that: utilize peat soil or ginseng garden mould to replace meadow soil.