CN113933450A - Method for estimating carbon sequestration capacity of seaweed bed of marine ecosystem - Google Patents
Method for estimating carbon sequestration capacity of seaweed bed of marine ecosystem Download PDFInfo
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- CN113933450A CN113933450A CN202111201020.1A CN202111201020A CN113933450A CN 113933450 A CN113933450 A CN 113933450A CN 202111201020 A CN202111201020 A CN 202111201020A CN 113933450 A CN113933450 A CN 113933450A
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Abstract
The invention discloses a method for estimating the carbon fixation capacity of a seaweed bed in a marine ecosystem, belongs to the technical field of environmental evaluation, and particularly relates to a method for estimating the carbon fixation capacity of seaweed in the marine ecosystem, which comprises the following steps: 1) selecting a sampling party; 2) a sampling square space isolation device and arrangement thereof; 3) a sampling method; 4) and (5) estimating the carbon fixing capacity. The invention has the beneficial effects that: the invention provides a method for estimating the carbon fixation capacity of a seaweed bed in a marine ecosystem, and fills the blank of a seaweed bed carbon fixation capacity investigation method; the carbon sequestration capacity of one area can be obtained in summer.
Description
Technical Field
The invention belongs to the technical field of environmental evaluation, and particularly relates to a method for estimating the carbon fixation capacity of seaweed in a marine ecosystem.
Background
The seaweed bed is an important component in a coastal ecosystem, has an important function on carbon cycle due to the growth, reproduction and death processes of the seaweed bed, and also has the functions of regulating water quality, capturing freshwater nutrient salt, providing ecological environment for organisms and the like.
The process by which the bed of seaweed is continuously propagated and consumed is the process by which free carbon is fixed. The main source of these free carbons is the portion of the bed of seaweed into which atmospheric gases enter by dissolution and convection. Since the consumption of the seaweed bed by the fishes causes most of the carbon fixed in the seaweed bed to enter the ocean bottom circulation process, the seaweed bed is a main ocean carbon sink and input port.
The important role of coastal ecosystems in carbon sequestration is increasingly recognized, and it is also known that degradation will become a source of carbon emissions. However, no complete method for estimating the carbon sequestration capacity of the seaweed bed exists in the coastal ecosystem at present. Only through relatively accurate estimation of carbon fixing capacity can a decision maker clear which means to repair the coastal ecosystem and establish a carbon financing mechanism according with market rules.
Disclosure of Invention
The invention aims to provide a method for estimating the carbon sequestration capacity of a seaweed bed in a marine ecosystem.
A method for estimating the carbon sequestration capacity of a sea grass bed of a marine ecosystem comprises the following steps:
1) selecting a sampling party;
2) a sampling square space isolation device and arrangement thereof;
3) a sampling method;
4) and (5) estimating the carbon fixing capacity.
The specific operation method of the steps is as follows:
1, selecting a sampling party,
for the seaweed bed, the seaweed bed is generally distributed along a coastline, and extends for hundreds of meters to dozens of kilometers below a normal tide level. There are various plants such as seaweed and seaweed, and also various animals such as fish and shrimp. The sampling party should be selected with certain representatives, which include:
(1) performing sampling survey on the seaweed bed to determine the distribution positions and types of the main plant types of the seaweed bed, and arranging a sampling party in a place where the main plant types are densely distributed;
(2) the substrate representativeness is that the substrate is sampled and investigated, the relation of different vegetations on different substrate types is analyzed, and a sample is arranged on a flat sandy seabed rich in humus as much as possible under the condition of meeting the requirement (1);
2, sampling square space isolation devices and arrangement thereof;
the sampling space isolation device comprises three parts:
the bottom separating sheet pile, the plastic connecting belt, the water body separating plastic cloth and the top floating body are arranged on the bottom of the water body separating sheet pile;
the bottom partition sheet pile is a thin steel sheet pile or an aluminum alloy sheet pile, the height is 1m, the width is 50cm, the bottom is provided with a wedge-shaped cutting edge, and the upper part is engaged with a plastic connecting belt through rolling;
the water body separation plastic cloth is in an annular belt shape, the bottom of the water body separation plastic cloth is connected with a plastic connecting belt through a zipper, and the other end of the plastic connecting belt is occluded on the aluminum alloy sheet pile;
the top floating body is fixed at the upper part of the water body separation plastic cloth, the top of the water body separation plastic cloth is rolled into a cylinder with the diameter of 10cm, and foam floaters are filled in the cylinder and sealed;
the water body separation plastic cloth is transparent;
the bottom separating pile is constructed into a sampling square with the side length of 2m, the perimeter of the water body separating plastic cloth and the plastic connecting belt is 8m, the bottom separating pile is driven into the periphery of the sampling square, so that the water body separating plastic cloth is straightened in water by the top floating body and the bottom separating plate pile, and the height of the water body separating plastic cloth is the height difference from the seabed to the highest tide level of 2 months in the future.
3, sampling method
(1) Sampling time arrangement: the sampling time is designed from the beginning of summer to the beginning of autumn, and for the northern hemisphere, the sampling time usually starts from 6 months 1-15 days and ends from 9 months 1-15 days, wherein the sampling time is once during 6 months 1-15 days, 7 months 15 days-8 months 15 days and 9 months 1-15 days, and the total time is 3 times;
(2) installing a sample space isolating device: installing a sampling space isolation device between 1 and 15 days of 6 months, firstly driving a bottom separation sheet pile into the bottom of a seabed, and reserving a height of 10cm on the surface of the seabed; connecting the water body separation plastic cloth on the plastic connecting belt, and placing the top floating body; thus, the sampling space and the surrounding space are isolated from each other;
(3) sampling method and sampling amount; measuring the height of all the seaweed in the selected sampling area, selecting not less than 8 seaweed plants with different heights, and measuring the carbon content of the seaweed plants by a dry combustion method; a Luoyang shovel sampler with the cross section area of 0.01m2 is adopted to obtain soil bodies with the depth of 1m at each of the four corners and the center of a sample square, when the soil depth of the sample square is less than 1m, the actual depth is recorded, when the soil depth of the sample square exceeds 1m, only the depth of 1m is taken, and a sample is taken back to a laboratory to obtain the carbon content by adopting a water washing and acid washing method.
(4) For the sampling times specified in (1), the carbon content is obtained by adopting the method (3) every time; and recording the carbon quantity difference in the whole sampling period as the carbon fixing capacity of the sample in one sampling period.
4, carbon sequestration Capacity estimation
Calculating the area of the sample square area in its representative regionThe ratio is calculated, and the carbon sequestration capacity of the whole investigation region is calculated; the arrangement of the sample is based on the flourishing degree of the plants, and the flourishing degree is divided into 0-6 plants/m26-12 strains/m2And more than 12 strains/m2Wherein 0-6 strains/m2Are not suitable for this process.
The invention has the beneficial effects that:
1. the invention provides a method for estimating the carbon fixation capacity of a seaweed bed in a marine ecosystem, and fills the blank of a seaweed bed carbon fixation capacity investigation method;
2. the method provided by the invention is clear and can obtain the carbon sequestration capacity of an investigation area.
3. The method provided by the invention has high efficiency, and the carbon fixing capacity of one area can be obtained in summer.
Drawings
FIG. 1 is a schematic top view of the sampling space and plant distribution of the present invention;
FIG. 2 is a schematic side view of a sampling square space isolation device according to the present invention;
FIG. 3 is a schematic cross-sectional view of a sampling square space isolation apparatus according to the present invention.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples, but the scope of the present invention is not limited thereto.
Example 1
A method for estimating the carbon sequestration capacity of a sea grass bed of a marine ecosystem comprises the following steps:
1, selecting a sampling party;
2, sampling square space isolation devices and arrangement thereof;
3, a sampling method;
and 4, estimating the carbon fixing capacity.
The specific operation method of the steps is as follows:
1, selecting a sampling party,
for the seaweed bed, the seaweed bed is generally distributed along a coastline, and extends for hundreds of meters to dozens of kilometers below a normal tide level. There are various plants such as seaweed and seaweed, and also various animals such as fish and shrimp. The sampling party should be selected with certain representatives, which include:
(1) performing sampling survey on the seaweed bed to determine the distribution positions and types of the main plant types of the seaweed bed, and arranging a sampling party in a place where the main plant types are densely distributed;
(2) the substrate representativeness is that the substrate is sampled and investigated, the relation of different vegetations on different substrate types is analyzed, and a sample is arranged on a flat sandy seabed rich in humus as much as possible under the condition of meeting the requirement (1);
2, sampling square space isolation devices and arrangement thereof;
the sampling space isolation device comprises three parts:
the water body separation device comprises a bottom separation sheet pile 1, a plastic rubber connecting belt 2, a water body separation plastic cloth 3 and a top floating body 4;
the bottom partition sheet pile 1 is a thin steel sheet pile or an aluminum alloy sheet pile, the height is 1m, the width is 50cm, the bottom is provided with a wedge-shaped cutting edge, and the upper part is engaged with a plastic connecting belt 2 through rolling;
the water body separation plastic cloth 3 is in a ring belt shape, the bottom of the water body separation plastic cloth is connected with the plastic connecting belt 2 through a zipper 21, and the other end of the plastic connecting belt 2 is occluded on the bottom separation sheet pile 1;
the top floating body 4 is fixed on the upper part of the water body separating plastic cloth 3, the top of the water body separating plastic cloth 3 is rolled into a cylinder with the diameter of 10cm, and foam floaters are filled in the cylinder and sealed;
the water body separation plastic cloth 3 is transparent;
the bottom separation pile 1 is constructed into a sampling square with the side length of 2m, the perimeter of the water separation plastic cloth 3 and the plastic connecting belt 2 is 8m, and the bottom separation pile 1 is driven into the periphery of the sampling square, so that the water separation plastic cloth 3 is straightened in water by the top floating body 4 and the bottom separation pile 1, and the height of the water separation plastic cloth 3 is the height difference from the seabed to the highest tide level of 3 months in the future.
3, sampling method
(1) Sampling time arrangement: the sampling time is designed from the beginning of summer to the beginning of autumn, and for the northern hemisphere, the sampling time usually starts from 6 months 1-15 days and ends from 9 months 1-15 days, wherein the sampling time is once during 6 months 1-15 days, 7 months 15 days-8 months 15 days and 9 months 1-15 days, and the total time is 3 times;
(2) installing a sample space isolating device: installing a sampling space isolation device between 6 months and 1-15 days, firstly driving a bottom separation pile 1 into the bottom of a seabed, and reserving a height of 10cm on the surface of the seabed; connecting a water body separation plastic cloth 2 to the plastic connecting belt 2, and placing a top floating body 4; thus, the sampling space and the surrounding space are isolated from each other;
(3) sampling method and sampling amount; measuring the height of all the seaweed in the selected sampling area, selecting not less than 8 seaweed plants with different heights, and measuring the carbon content of the seaweed plants by a dry combustion method; with a cross-sectional area of 0.01m2The Luoyang shovel sampler obtains soil bodies with the depths of 1m at the four corners and the center of a sample square respectively, records the actual depth when the soil depth of the sample square is less than 1m, only takes the depth of 1m when the soil depth of the sample square exceeds 1m, and brings the sample back to a test room to obtain the carbon content by adopting a water washing and acid washing method.
(4) For the sampling times specified in (1), the carbon content is obtained by adopting the method (3) every time; and recording the carbon quantity difference in the whole sampling period as the carbon fixing capacity of the sample in one sampling period.
The square area is 4m2Wherein the number of the seaweed is 56, and the height is between 11cm and 38 cm. The carbon content of the seaweed is measured by 8 plants each time, the ratio of the number of the plants is 7, and the sampling area of the carbon content of the soil body is 0.01m2Then the area ratio is 400.
TABLE 1 carbon amounts sampled in each sample
| Date of sampling | Carbon amount of seaweed (g) | Carbon content in soil (g) | Total carbon increment (g) |
| 0603 | 23.5×7 | 5.8×400 | |
| 0705 | 26.8×7 | 6.2×400 | 183.1 |
| 0913 | 27.6×7 | 7.3×400 | 628.7 |
4, carbon sequestration Capacity estimation
Calculating the area proportion of the area of the sample in the representative area, and further calculating the carbon sequestration capacity of the whole investigation area; the arrangement of the sample is based on the flourishing degree of the plants, and the flourishing degree is divided into 0-6 plants/m26-12 strains/m2And more than 12 strains/m2Wherein 0-6 strains/m2Are not suitable for this process.
The area of the project is 8.8 hectares, namely 22000 standard squares, and the solid carbon quantity of the whole growing season is 0.6287 multiplied by 22000 which is 13831.4 kg.
Claims (5)
1. A method for estimating carbon sequestration capacity of a sea grass bed of a marine ecosystem is characterized by comprising the following steps: the method comprises the following steps:
1) selecting a sampling party;
2) a sampling square space isolation device and arrangement thereof;
3) a sampling method;
4) and (5) estimating the carbon fixing capacity.
2. The method for estimating carbon sequestration capacity of a sea grass bed in a marine ecosystem according to claim 1, wherein the method comprises the following steps: the 1) selection of the sampling party has the following representativeness:
(1) performing sampling survey on the seaweed bed to determine the distribution positions and types of the main plant types of the seaweed bed, and arranging a sampling party in a place where the main plant types are densely distributed;
(2) and (3) performing sampling survey on the substrate representativeness, analyzing the relation of different vegetations on different substrate types, and arranging the sample on a flat sandy seabed rich in humus as much as possible under the condition of meeting the requirement (1).
3. The method for estimating carbon sequestration capacity of a sea grass bed in a marine ecosystem according to claim 1, wherein the method comprises the following steps: the following steps: 2) the sampling space isolation device and the arrangement thereof comprise the following contents:
the sampling space isolating device comprises three parts:
the bottom separating sheet pile, the plastic connecting belt, the water body separating plastic cloth and the top floating body are arranged on the bottom of the water body separating sheet pile;
the bottom partition sheet pile is a thin steel sheet pile or an aluminum alloy sheet pile, the height is 1m, the width is 50cm, the bottom is provided with a wedge-shaped cutting edge, and the upper part is engaged with a plastic connecting belt through rolling;
the water body separation plastic cloth is in an annular belt shape, the bottom of the water body separation plastic cloth is connected with a plastic connecting belt through a zipper, and the other end of the plastic connecting belt is occluded on the aluminum alloy sheet pile;
the top floating body is fixed at the upper part of the water body separation plastic cloth, the top of the water body separation plastic cloth is rolled into a cylinder with the diameter of 10cm, and foam floaters are filled in the cylinder and sealed;
the water body separation plastic cloth is transparent;
the bottom separating pile is constructed into a sampling square with the side length of 2m, the perimeter of the water body separating plastic cloth and the plastic connecting belt is 8m, the bottom separating pile is driven into the periphery of the sampling square, so that the water body separating plastic cloth is straightened in water by the top floating body and the bottom separating plate pile, and the height of the water body separating plastic cloth is the height difference from the seabed to the highest tide level of 2 months in the future.
4. The method for estimating carbon sequestration capacity of a sea grass bed in a marine ecosystem according to claim 1, wherein the method comprises the following steps: the 3) sampling method comprises the following steps:
(1) sampling time arrangement: the sampling times are designed from the beginning of summer to the beginning of fall, typically starting at 6 months 1-15 days and ending at 9 months 1-15 days for the northern hemisphere, where at 6 months 1-15 days, 7 months 15 days-8 months 15 days,
sampling once each during 1-15 days of 9 months for 3 times in total;
(2) installing a sample space isolating device: installing a sampling space isolation device between 1 and 15 days of 6 months, firstly driving a bottom separation sheet pile into the bottom of a seabed, and reserving a height of 10cm on the surface of the seabed; connecting the water body separation plastic cloth on the plastic connecting belt, and placing the top floating body; thus, the sampling space and the surrounding space are isolated from each other;
(3) sampling method and sampling amount; measuring the height of all the seaweed in the selected sampling area, selecting not less than 8 seaweed plants with different heights, and measuring the carbon content of the seaweed plants by a dry combustion method; a Luoyang shovel sampler with the cross section area of 0.01m2 is adopted to obtain soil bodies with the depth of 1m at each of the four corners and the center of a sample square, when the soil depth of the sample square is less than 1m, the actual depth is recorded, when the soil depth of the sample square exceeds 1m, only the depth of 1m is taken, and a sample is taken back to a laboratory to obtain the carbon content by adopting a water washing and acid washing method.
(4) For the sampling times specified in (1), the carbon content is obtained by adopting the method (3) every time; and recording the carbon quantity difference in the whole sampling period as the carbon fixing capacity of the sample in one sampling period.
5. The method for estimating carbon sequestration capacity of a sea grass bed in a marine ecosystem according to claim 1, wherein the method comprises the following steps: the 4) carbon fixing capacity estimation comprises the following contents:
calculating a sampleThe area represents the area proportion of the area in the area, and then the carbon sequestration capacity of the whole investigation area is calculated; the arrangement of the sample is based on the flourishing degree of the plants, and the flourishing degree is divided into 0-6 plants/m26-12 strains/m2And more than 12 strains/m2Wherein 0-6 strains/m2Are not suitable for this process.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115995048A (en) * | 2023-03-23 | 2023-04-21 | 山东省海洋资源与环境研究院(山东省海洋环境监测中心、山东省水产品质量检验中心) | Remote sensing measurement and calculation method, device and equipment for sea weed bed carbon fixation amount |
| CN116400055A (en) * | 2023-06-09 | 2023-07-07 | 海南中南标质量科学研究院有限公司 | Seaweed bed carbon reserves and carbon balance capacity tester |
| CN116429988A (en) * | 2023-06-09 | 2023-07-14 | 海南中南标质量科学研究院有限公司 | Dynamic remote sensing monitoring device for ocean plant carbon sink |
-
2021
- 2021-10-15 CN CN202111201020.1A patent/CN113933450A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115995048A (en) * | 2023-03-23 | 2023-04-21 | 山东省海洋资源与环境研究院(山东省海洋环境监测中心、山东省水产品质量检验中心) | Remote sensing measurement and calculation method, device and equipment for sea weed bed carbon fixation amount |
| CN116400055A (en) * | 2023-06-09 | 2023-07-07 | 海南中南标质量科学研究院有限公司 | Seaweed bed carbon reserves and carbon balance capacity tester |
| CN116429988A (en) * | 2023-06-09 | 2023-07-14 | 海南中南标质量科学研究院有限公司 | Dynamic remote sensing monitoring device for ocean plant carbon sink |
| CN116400055B (en) * | 2023-06-09 | 2024-02-13 | 海南中南标质量科学研究院有限公司 | Seaweed bed carbon reserves and carbon balance capacity tester |
| CN116429988B (en) * | 2023-06-09 | 2024-02-13 | 海南中南标质量科学研究院有限公司 | Dynamic remote sensing monitoring device for ocean plant carbon sink |
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