CN112514578A - Method for increasing carbon fixation amount of severely degraded potentilla anserine meadow vegetation - Google Patents
Method for increasing carbon fixation amount of severely degraded potentilla anserine meadow vegetation Download PDFInfo
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 53
- 241000210110 Potentilla argentea Species 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000002689 soil Substances 0.000 claims abstract description 45
- 238000002360 preparation method Methods 0.000 claims abstract description 37
- 238000009331 sowing Methods 0.000 claims abstract description 32
- 244000025254 Cannabis sativa Species 0.000 claims abstract description 24
- 241000196324 Embryophyta Species 0.000 claims abstract description 19
- 239000003337 fertilizer Substances 0.000 claims abstract description 18
- 238000010899 nucleation Methods 0.000 claims abstract description 4
- 230000015556 catabolic process Effects 0.000 claims description 32
- 238000006731 degradation reaction Methods 0.000 claims description 32
- 239000003245 coal Substances 0.000 claims description 16
- 210000003608 fece Anatomy 0.000 claims description 13
- 239000010871 livestock manure Substances 0.000 claims description 13
- 230000009919 sequestration Effects 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 8
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims description 6
- 241000511730 Leymus chinensis Species 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 6
- 239000004021 humic acid Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 235000016164 Elymus triticoides Nutrition 0.000 description 10
- 241000511731 Leymus Species 0.000 description 10
- 238000011156 evaluation Methods 0.000 description 9
- 239000002028 Biomass Substances 0.000 description 6
- 230000007850 degeneration Effects 0.000 description 5
- 241000894007 species Species 0.000 description 5
- 241000282414 Homo sapiens Species 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241001092489 Potentilla Species 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000009304 pastoral farming Methods 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 241000272814 Anser sp. Species 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004177 carbon cycle Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G20/00—Cultivation of turf, lawn or the like; Apparatus or methods therefor
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/14—Soil-conditioning materials or soil-stabilising materials containing organic compounds only
- C09K17/18—Prepolymers; Macromolecular compounds
- C09K17/32—Prepolymers; Macromolecular compounds of natural origin, e.g. cellulosic materials
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2101/00—Agricultural use
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- Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Cultivation Of Plants (AREA)
Abstract
A method for improving carbon fixation amount of vegetation in a severely degraded potentilla anserine meadow comprises the steps of firstly, performing land preparation on places without plant coverage or with low plant coverage in a preset area in a shallow ploughing and light raking mode, wherein land preparation time is in the last 4 months of the year, soil blocks are smashed and the ploughing depth is 3-6 cm; secondly, applying the land after soil preparation in the last or middle ten days of the current year 4 by adopting a predetermined ecological preparation; thirdly, applying the land after applying the predetermined ecological preparation by adopting a predetermined fertilizer in the last 4 th or middle ten days of the year; fourthly, sowing the preset grass seeds on the land after the preset fertilizer is applied in the middle or the last 4 th month of the year; and fifthly, managing and protecting at the later period, mainly watering at the seeding period. The invention can effectively improve the growth environment of vegetation, improve the productivity and carbon fixation capacity of vegetation and improve the carbon fixation amount of vegetation.
Description
Technical Field
The invention relates to a method for improving carbon fixation amount of severely degraded potentilla anserine meadow vegetation, and belongs to the technical field of grassland carbon sink emission reduction.
Background
Carbon, mostly CO, is the most basic circulating substance in ecosystems2The form of the compound is transferred and transformed among biospheres, water bodies, rock bodies and atmospheric bodies and is kept in a relatively balanced state. However, atmospheric CO results from human activities dominated by agricultural cultivation, excessive grazing, fossil fuel burning, and the like2The content of the carbon source is increased sharply, the balance of global carbon circulation is destroyed, the carbon sink is reduced, and simultaneously the carbon source is increased, so that the global climate is changed. Increasing land to CO against the background of global warming2The fixation of the carbon emission is reduced, and more carbon emission rights are strived to become scientific and technical problems which need to be solved urgently in all countries in the world.
Grassland ecosystem is an important participant and influencer of carbon cycle in the terrestrial ecosystem, grassland area accounts for about 24% of the terrestrial area and 36% of the global vegetation biomass, and its fixed carbon amount is a key element for predicting the absorption and emission of carbon-oxidizing gases. China has rich grassland resources and various types, and the grassland area accounts for 41.7 percent of the area of the national soil. The grassland ecosystem geographical position is higher than the middle and high latitude areas, most of the grassland ecosystem geographical position is located in the ecological fragile zone, and the grassland ecosystem geographical position occupies the highest degree in the national ecological safety constructionThe important position. More than 85% of organic carbon of the grassland is distributed in alpine regions and temperate regions, and as high-latitude and high-altitude grasslands are in low-temperature environments all year round, organic matters in the soil are slowly decomposed, and the carbon storage of the soil is relatively high. Therefore, these areas are considered to be a possible important carbon sink for the terrestrial ecosystem of our country. Along with the influence of human interference such as land utilization change and global temperature increase, the carbon release rate of a regional soil carbon reservoir is increased, the relationship between the carbon sink property and the carbon source property of the grassland in the region is uncertain in development, the influence of climate warming is more severe especially for high-latitude arid grasslands, severe artificial interference also causes serious grassland degradation, the grassland vegetation coverage is reduced, and the two are cooperated to accelerate the carbon release rate in the soil and increase atmospheric CO2The concentration of (a) reduces the carbon sink effect of the grass.
The pine and tender grassland is one of three grasslands in the northeast of China and ten major key pasturing areas in China, and is an important industrial base, a grain base and an energy base in China. However, due to the transitional demand of economic and social development, the environment of the original environment of the tender grass is deteriorated by human beings represented by wasteland reclamation, overloading, grazing and the like, the problems of 'degeneration, salinization and desertification' of the grassland are particularly serious, and the carbon sequestration capacity of the vegetation is seriously reduced. A great deal of work is done on carbon sequestration of grassland ecosystems at home and abroad, most of the research focuses on basic theoretical researches on carbon circulation, greenhouse gas emission, soil carbon and nitrogen and the like, and the research on carbon sequestration and sink enhancement technologies of grassland vegetation is still deficient.
Disclosure of Invention
The invention aims to solve the problems in the prior art and further provides a method for improving the carbon fixation amount of the severely degraded potentilla anserine meadow vegetation.
The purpose of the invention is realized by the following technical scheme:
a method for improving carbon fixation amount of severely degraded potentilla anserine meadow vegetation comprises the following steps;
step one, soil preparation is carried out on positions without plant coverage or with low plant coverage in a preset area in a shallow ploughing and lightly raking mode, the soil preparation time is the last 4 months of the year, soil blocks are smashed during the soil preparation, and the soil turning depth is 3-6 cm;
step two, applying the land after soil preparation in the last or middle ten days of the year 4 months by adopting a preset ecological preparation;
step three, applying a predetermined fertilizer to the land after applying the predetermined ecological preparation in the last 4 th or middle ten th of the year;
step four, sowing the preset grass seeds on the land after the preset fertilizer is applied in the middle or last ten days of the year 4;
and step five, later-period management and protection, mainly watering in the sowing period.
The invention has the outstanding characteristics that aiming at the problems of reduced carbon sink capacity and reduced carbon fixation amount of vegetation caused by the degradation of the vegetation in the potentilla anserine meadow, the technical measures of reconstruction of dominant species, application of ecological preparations and stable manure and the like are adopted, the growth environment of the vegetation can be effectively improved, the productivity and the carbon fixation capacity of the vegetation are improved, and the carbon fixation amount of the vegetation is increased. In 2017, experiments are carried out in the tender plain, and results of continuous monitoring in 2018 and 2019 show that the carbon fixation amount of the vegetation is improved by 30-50% compared with that of a control goose down potentilla meadow (no technical measures are adopted).
Detailed Description
The present invention will be described in further detail below: the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation is given, but the scope of the present invention is not limited to the following embodiments.
The method for improving the carbon fixation amount of the vegetation in the severely degraded potentilla anserine meadow comprises the following steps:
step one, soil preparation is carried out on positions without plant coverage or with low plant coverage rate in a preset area in a shallow ploughing and lightly raking mode, soil preparation time is last 4 months of the year, soil blocks need to be smashed and the soil ploughing depth is 3-6 cm in the soil preparation process.
Optionally, the shallow plowing light rake can be completed by selecting tools such as a mechanical rake, an electric rake or a stone crusher, and the like, as long as the plowing depth and the soil blocks are guaranteed to be broken. The predetermined area is determined by evaluating the degradation degree of potentilla anserine meadow vegetation in a specific time period, and the evaluation indexes are as follows: the vegetation coverage rate is more than or equal to 70% and is mild degradation, the vegetation coverage rate is more than or equal to 40% and is moderate degradation, the vegetation coverage rate is less than 40% and is severe degradation, a severe degradation area is selected as a preset area, and the specific time period generally refers to the period of highest vegetation biomass, and generally is 7 months or 8 months of each year.
And step two, applying the land after soil preparation in the last or middle ten days of 4 months of the year by adopting a preset ecological preparation.
Optionally, the predetermined ecological preparation can be weathered coal, the content of humic acid in the weathered coal is more than or equal to 30%, the particle size of the weathered coal is less than or equal to 3mm, and the application amount is 100-150 kg/mu.
And step three, applying the land after applying the predetermined ecological preparation by using a predetermined fertilizer in the last 4 th or middle of the year.
Optionally, the predetermined fertilizer can be stable manure which is fermented for 1-2 years, and the application amount is 120-150 kg/mu.
And step four, sowing the preset grass seeds on the land after the preset fertilizer is applied in the middle or late 4 th of the year.
Optionally, the preset grass seeds are selected from local saline-alkali tolerant plants, further, the preset grass seeds can be selected from Chinese wildrye grass seeds, the sowing quantity of the Chinese wildrye grass is 3-5 kg/mu, and the soil covering depth is 3-6 cm.
And step five, later-period management and protection, mainly watering in the sowing period.
The method described in the above embodiments can be applied to fertilization or seeding by using a fertilizing tool or a seeding tool, as long as the required value is ensured.
Example 1
The method for rapidly increasing the carbon fixation amount of the vegetation in the severely degraded potentilla anserine meadow comprises the following steps:
the method comprises the following steps: evaluating the vegetation degradation degree of the Potentilla anserine meadow, wherein the vegetation coverage rate is used as an evaluation index of the vegetation degradation degree (mild, moderate and severe) of the Potentilla anserine meadow, the vegetation coverage rate is more than or equal to 70% and is mild degradation, the vegetation coverage rate is more than 70% and is more than or equal to 40% and is moderate degradation, the vegetation coverage rate is less than 40% and is severe degradation, and the evaluation time is generally 7 months or 8 months (the period of highest vegetation biomass).
Step two: and (3) soil preparation, lightly plowing the soil, wherein the shallow plowing depth is 3-6 cm, smashing soil blocks by using the light rake, and the implementation time is 4 ten days.
Step three: the ecological preparation is mainly weathered coal, the content of humic acid in the weathered coal is more than or equal to 30%, the particle size of the weathered coal is less than or equal to 3mm, the application time is 4 th or middle ten days, the ecological preparation is applied in an artificial uniform scattering mode, and the application amount is 100-140 kg/mu.
Step four: and (3) applying the fertilizer, wherein the fertilizer is mainly stable manure, the stable manure needs to be fermented for 1-2 years, the applying time is 4 last ten days or middle ten days, and the applying amount is 120-140 kg/mu.
Step five: selecting and sowing grass seeds, selecting grass seeds, and generally selecting local saline-alkali tolerant dominant plants, which are generally Chinese wildrye; sowing the grass seeds by adopting a mode of manual uniform scattering or mechanical sowing, wherein the sowing time is generally 4 months in the middle and last ten days, the sowing quantity of the Chinese wildrye is 3-5 kg/mu, and the soil covering depth is 3-5 cm. The step aims to increase important accompanying plants of the Potentilla anserine meadow vegetation, namely, the leymus chinensis, which are dominant species of vegetation in a state before the Potentilla anserine meadow degeneration, and accelerate the process of the Potentilla anserine meadow direct-motion succession.
Step six: and (4) management and protection at the later stage, wherein watering is mainly carried out at the sowing period, so that the emergence rate of the sowed seeds is ensured.
Example 2
The method for rapidly increasing the carbon fixation amount of the vegetation in the severely degraded potentilla anserine meadow comprises the following steps:
the method comprises the following steps: evaluating the vegetation degradation degree of the Potentilla anserine meadow, wherein the vegetation coverage rate is used as an evaluation index of the vegetation degradation degree (mild, moderate and severe) of the Potentilla anserine meadow, the vegetation coverage rate is more than or equal to 70% and is mild degradation, the vegetation coverage rate is more than 70% and is more than or equal to 40% and is moderate degradation, the vegetation coverage rate is less than 40% and is severe degradation, and the evaluation time is generally 7 months or 8 months (the period of highest vegetation biomass).
Step two: and (3) soil preparation, lightly plowing the soil, wherein the shallow plowing depth is 3-6 cm, smashing soil blocks by using the light rake, and the implementation time is 4 ten days.
Step three: the ecological preparation is mainly weathered coal, the content of humic acid in the weathered coal is more than or equal to 30%, the particle size of the weathered coal is less than or equal to 3mm, the application time is 4 ten days or middle ten days, the ecological preparation is applied in an artificial uniform scattering mode, and the application amount is 100-130 kg/mu.
Step four: and (3) applying the fertilizer, wherein the fertilizer is mainly stable manure, the stable manure needs to be fermented for 1-2 years, the applying time is 4 last ten days or middle ten days, and the applying amount is 130-140 kg/mu.
Step five: selecting and sowing grass seeds, selecting grass seeds, and generally selecting local saline-alkali tolerant dominant plants, which are generally Chinese wildrye; sowing the grass seeds by adopting a mode of manual uniform scattering or mechanical sowing, wherein the sowing time is generally 4 months in the middle and last ten days, the sowing quantity of the Chinese wildrye is 4-5 kg/mu, and the soil covering depth is 3-5 cm. The step aims to increase important accompanying plants of the Potentilla anserine meadow vegetation, namely, the leymus chinensis, which are dominant species of vegetation in a state before the Potentilla anserine meadow degeneration, and accelerate the process of the Potentilla anserine meadow direct-motion succession.
Step six: and (4) management and protection at the later stage, wherein watering is mainly carried out at the sowing period, so that the emergence rate of the sowed seeds is ensured.
Example 3
The method for rapidly increasing the carbon fixation amount of the vegetation in the severely degraded potentilla anserine meadow comprises the following steps:
the method comprises the following steps: evaluating the vegetation degradation degree of the Potentilla anserine meadow, wherein the vegetation coverage rate is used as an evaluation index of the vegetation degradation degree (mild, moderate and severe) of the Potentilla anserine meadow, the vegetation coverage rate is more than or equal to 70% and is mild degradation, the vegetation coverage rate is more than 70% and is more than or equal to 40% and is moderate degradation, the vegetation coverage rate is less than 40% and is severe degradation, and the evaluation time is generally 7 months or 8 months (the period of highest vegetation biomass).
Step two: and (3) soil preparation, lightly plowing the soil, wherein the shallow plowing depth is 4-6 cm, smashing soil blocks by using the light rake, and the implementation time is 4 ten days.
Step three: the ecological preparation is mainly weathered coal, the content of humic acid in the weathered coal is more than or equal to 30%, the particle size of the particles is less than or equal to 3mm, the application time is 4 th or middle ten days, the ecological preparation is applied in an artificial uniform scattering mode, and the application amount is 110-130 kg/mu.
Step four: and (3) applying the fertilizer, wherein the fertilizer is mainly stable manure, the stable manure needs to be fermented for 1-2 years, the applying time is 4 last ten days or middle ten days, and the applying amount is 130-150 kg/mu.
Step five: selecting and sowing grass seeds, selecting grass seeds, and generally selecting local saline-alkali tolerant dominant plants, which are generally Chinese wildrye; sowing the grass seeds by adopting a mode of manual uniform scattering or mechanical sowing, wherein the sowing time is generally 4 months in the middle and last ten days, the sowing quantity of the Chinese wildrye is 4-5 kg/mu, and the soil covering depth is 3-4 cm. The step aims to increase important accompanying plants of the Potentilla anserine meadow vegetation, namely, the leymus chinensis, which are dominant species of vegetation in a state before the Potentilla anserine meadow degeneration, and accelerate the process of the Potentilla anserine meadow direct-motion succession.
Step six: and (4) management and protection at the later stage, wherein watering is mainly carried out at the sowing period, so that the emergence rate of the sowed seeds is ensured.
Example 4
The method for rapidly increasing the carbon fixation amount of the vegetation in the severely degraded potentilla anserine meadow comprises the following steps:
the method comprises the following steps: evaluating the vegetation degradation degree of the Potentilla anserine meadow, wherein the vegetation coverage rate is used as an evaluation index of the vegetation degradation degree (mild, moderate and severe) of the Potentilla anserine meadow, the vegetation coverage rate is more than or equal to 70% and is mild degradation, the vegetation coverage rate is more than 70% and is more than or equal to 40% and is moderate degradation, the vegetation coverage rate is less than 40% and is severe degradation, and the evaluation time is generally 7 months or 8 months (the period of highest vegetation biomass).
Step two: and (3) soil preparation, lightly plowing the soil, wherein the shallow plowing depth is 4-6 cm, smashing soil blocks by using the light rake, and the implementation time is 4 ten days.
Step three: the ecological preparation is mainly weathered coal, the content of humic acid in the weathered coal is more than or equal to 30%, the particle size of the particles is less than or equal to 3mm, the application time is 4 th or middle ten days, the ecological preparation is applied in an artificial uniform scattering mode, and the application amount is 110-120 kg/mu.
Step four: and (3) applying the fertilizer, wherein the fertilizer is mainly stable manure, the stable manure needs to be fermented for 1-1.5 years, the applying time is 4/last ten days or middle ten days, and the applying amount is 130-150 kg/mu.
Step five: selecting and sowing grass seeds, selecting grass seeds, and generally selecting local saline-alkali tolerant dominant plants, which are generally Chinese wildrye; and (3) sowing grass seeds, namely adopting a mode of manual uniform scattering or mechanical sowing, wherein the sowing time is generally 4 months in the middle and last ten days, the sowing quantity of the Chinese wildrye is 4-5 kg/mu, and the soil covering depth is 5 cm. The step aims to increase important accompanying plants of the Potentilla anserine meadow vegetation, namely, the leymus chinensis, which are dominant species of vegetation in a state before the Potentilla anserine meadow degeneration, and accelerate the process of the Potentilla anserine meadow direct-motion succession.
Step six: and (4) management and protection at the later stage, wherein watering is mainly carried out at the sowing period, so that the emergence rate of the sowed seeds is ensured.
The method in the embodiment is used for improving the carbon sink capacity of the degraded and salinized grassland vegetation in northern grassland, experiments are carried out in tender plain in 2017, and continuous monitoring results in 2018 and 2019 show that the carbon fixing amount of the vegetation is improved by 30-50% compared with that of the vegetation in a Potentilla velutipes meadow (no technical measures are adopted).
The above description is only a preferred embodiment of the present invention, and these embodiments are based on different implementations of the present invention, and the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A method for increasing the carbon fixation amount of severely degraded potentilla anserine meadow vegetation,
step one, soil preparation is carried out on positions without plant coverage or with low plant coverage in a preset area in a shallow ploughing and lightly raking mode, the soil preparation time is the last 4 months of the year, soil blocks are smashed during the soil preparation, and the soil turning depth is 3-6 cm;
step two, applying the land after soil preparation in the last or middle ten days of the year 4 months by adopting a preset ecological preparation;
step three, applying a predetermined fertilizer to the land after applying the predetermined ecological preparation in the last 4 th or middle ten th of the year;
step four, sowing the preset grass seeds on the land after the preset fertilizer is applied in the middle or last ten days of the year 4;
and step five, later-period management and protection, mainly watering in the sowing period.
2. The method of increasing the carbon sequestration of heavily degraded Potentilla anserine meadow vegetation of claim 1, wherein said predetermined area is determined by assessing the degree of degradation of Potentilla anserine meadow vegetation over a specified period of time, said assessment indicators being: the vegetation coverage rate is more than or equal to 70 percent and is mild degradation, the vegetation coverage rate is more than or equal to 70 percent and is moderate degradation, the vegetation coverage rate is less than 40 percent and is severe degradation, and a severe degradation area is selected as a preset area.
3. The method of increasing the carbon sequestration of heavily degraded potentilla anserine meadow vegetation of claim 1, wherein said predetermined ecological agent is weathered coal.
4. The method for improving the carbon sequestration capacity of the severely degraded potentilla anserine meadow vegetation according to claim 3, wherein the application amount of the weathered coal is 100-150 kg/mu.
5. The method for increasing the carbon sequestration of heavily degraded potentilla anserine meadow vegetation according to claim 4, characterized in that the humic acid content of the weathered coal is not less than 30%, and the particle size is not more than 3 mm.
6. The method for improving the carbon sequestration of heavily degraded Potentilla anserine meadow vegetation according to claim 1, wherein the predetermined fertilizer is manure, and the manure is applied in an amount of 120-150 kg/acre.
7. The method for increasing the carbon sequestration of heavily degraded Potentilla anserine meadow vegetation according to claim 6, wherein said manure is fermented for 1-2 years.
8. The method of increasing the carbon sequestration of heavily degraded Potentilla anserine meadow vegetation of claim 1, wherein said predetermined weed seeds are selected from the dominant plants that are locally tolerant to salt and alkali.
9. The method for increasing the carbon sequestration capacity of heavily degraded Potentilla anserine meadow vegetation according to claim 1, wherein the soil depth of the predetermined grass seeds is 3-6 cm.
10. The method for improving the carbon sequestration of heavily degraded potentilla anserine meadow vegetation according to claim 1 or 9, characterized in that the predetermined grass seeds are selected from leymus chinensis, and the seeding rate of leymus chinensis is 3-5 kg/mu.
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| CN101020189A (en) * | 2007-03-23 | 2007-08-22 | 倪红伟 | Treating process of medium saline-alkali grassland |
| CN103931416A (en) * | 2014-05-09 | 2014-07-23 | 辽宁大学 | Method for updating deteriorated grassland bluegrass lawn at low cost in north |
| CN104472049A (en) * | 2014-12-01 | 2015-04-01 | 山西省农业科学院农业环境与资源研究所 | Method for quickly improving inland severe saline-alkaline wasteland |
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2020
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| CN103931416A (en) * | 2014-05-09 | 2014-07-23 | 辽宁大学 | Method for updating deteriorated grassland bluegrass lawn at low cost in north |
| CN104472049A (en) * | 2014-12-01 | 2015-04-01 | 山西省农业科学院农业环境与资源研究所 | Method for quickly improving inland severe saline-alkaline wasteland |
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