CN-120240273-B - Sea matrix batch production process for seaweed bed bare spot repair area

CN120240273BCN 120240273 BCN120240273 BCN 120240273BCN-120240273-B

Abstract

The invention provides a batch production process of marine matrixes in a bare spot repair area of a seaweed bed, which belongs to the field of ecological repair of the seaweed bed and comprises the following steps of S1, sampling and particle analysis experiments of the marine matrixes in the bare spot repair area, S2, detection and purchase of outsourcing soil sources of the marine matrixes, S3, screening and mixing of the outsourcing soil sources, S4, sampling and detection of the mixed marine matrixes, and S5, bagging and preservation. The mass production process of the marine substrate provided by the invention is simple and feasible, has low operation requirement, can reconstruct the substrate environment suitable for the seaweed bed in the seaweed bed bare board restoration area, and provides a good substrate source for large-scale restoration of seaweed in the seaweed bed bare board restoration area.

Inventors

DONG GUOMING
LIU JIANBING
YAO HAIZHU
LI XIAOFENG
ZHANG JINHUAN
MENG LI
MI LIN
LIU RENHONG
ZHANG WEIMIN

Assignees

河北省地质矿产勘查开发局第二地质大队(河北省矿山环境修复治理技术中心)

Dates

Publication Date: 20260512
Application Date: 20250427

Claims (5)

1. The sea matrix batch production process for the bare spot repair area of the seaweed bed is characterized by comprising the following steps of: s1, sampling a marine matrix and performing particle analysis experiments in a bare spot repair area; s2, detecting and purchasing an ocean matrix outsourcing soil source; s3, screening and mixing the marine matrix outsourcing soil source; S4, sampling and detecting the mixed marine matrix; S5, bagging and storing; In the step S1, the marine matrix sampling and particle analysis experiment needs to take 1 sediment column sample with the vertical direction of 70cm outwards along the edge of a bare spot pit, and send the sediment column sample to a laboratory with corresponding qualification for detection, when in the particle analysis experiment, each column sample is cut into two sections with the size of 0-30cm and 30-70cm, and the sample is screened by adopting a screening method and a moisture method to obtain a particle grading data analysis result statistical table of the sediment of the bare spot pit, wherein the number of the particle grading data analysis result statistical table is obtained by screening the sample with the size of >2mm, 2-0.075 mm, 0.075-0.005 mm and <0.005mm4 particle groups; S2, detecting an outsourcing soil source, and purchasing as the outsourcing soil source when the detection result meets the I-type marine sediment mass requirement; The outsourcing soil source screening in the step S3 refers to 3-level screening of the outsourcing soil source, namely screening according to the particle sizes of sand (2-0.075 mm), silt (0.075-0.005 mm) and clay (< 0.005 mm); Step S3, mixing an outsourcing soil source, wherein the mixing is carried out according to the volume ratio of sand (2-0.075 mm), silt (0.075-0.005 mm) and clay (< 0.005 mm) particle sizes in the analysis result of the sediment particle grading data in the step S1; And (3) sampling and detecting the mixed marine substrate in the step (S4), wherein 3 samples are randomly taken from different parts of the mixed marine substrate per 100m 3 , the mass of each sample is not less than 1.5kg, the samples are sent to a qualified laboratory for carrying out a particle analysis experiment, the experimental result is compared with particle grading data analysis result statistical table data of the deposit of the bare spot pit, the data deviation is qualified within 5%, otherwise, the step (S3) and the step (S4) are repeated until the requirements are met, and the marine substrate required by the bare spot repair area is obtained.
2. The mass production process of ocean matrixes in the seaweed bed bare spot repair area according to claim 1, wherein the detection of the ocean matrix outsourcing soil source in the step S2 requires that 3 samples are randomly sampled from different parts of each 100m 3 of the soil source to be purchased, the mass of each sample is not less than 1.5kg, and the samples are sent to a laboratory with corresponding qualification for quality detection.
3. The batch production process of sea matrixes in the seaweed bed bare spot repair area according to claim 1, wherein the outsourcing soil source screening in the step S3 is performed by adopting a mesh screen method, each grading screening of the same soil source is repeated 3 times, and the foreign soil is turned over and dried by machinery before screening, so that the natural water content of the soil source to be screened meets the stirring requirement.
4. The batch production process of the sea matrixes in the seaweed bed bare spot repair area is characterized in that the outsourcing soil source mixing in the step S3 is adopted, if the material does not meet the construction consumption, the soil source with the particle size which is lack is outsourced, the particle size which is lack is selected for supplementing after repeated screening steps, an excavator loader is adopted for matching and stirring, the stirring time is no less than 8 hours every 1000m 3 , the grading and stirring are guaranteed to be uniform, and the stirring time is increased until the stirring is uniform when the site is uneven.
5. The mass production process of ocean matrixes in the bare spot repair area of the seaweed bed according to claim 1, wherein in the step S5, bags and storages are adopted, the net bags for filling the ocean matrixes needed by the bare spot repair area are ecological woven bags, the net bags are used for ensuring that matrix particles are not scattered, the length of the net bags is 70 cm-100 cm, the width of the net bags is 50 cm-80 cm, the net bags are filled with the net bags, sealing is carried out, the sealed matrix net bags are transported to the bare spot repair area for backfilling as soon as possible, the net bags are prevented from being carried and rocked for many times, and seawater is sprayed every day for keeping moist.

Description

Sea matrix batch production process for seaweed bed bare spot repair area Technical Field The invention relates to the field of ecological restoration of seaweed beds, in particular to a production process of a marine substrate in a bare spot restoration area of a seaweed bed. Background The seaweed bed is an important marine ecosystem beyond mangrove and coral reefs, is a habitat where many large marine organisms and even mammals depend to live, and has high primary productivity and strong carbon sink capacity. With the increasing development and utilization intensity of the ocean, the global seaweed bed is accelerated to decline, the protection and repair work of the seaweed bed ecosystem is urgent-! Factors influencing the growth of seaweed mainly include temperature, light, salinity, ocean matrix and the like. Wherein, the natural environment is changed by continuous high temperature, continuous rainfall and the like, and particularly, a large number of bare spot repair areas are formed on the seaweed bed by human activities. The bare spot repair area consists of a plurality of bare spot pits with approximate circular missing matrixes, the seaweed bed in the area is damaged, and the continuity of the seaweed bed is seriously damaged. At present, the first sea grass bed bare spot repair area matrix backfilling project in China is completed by the unit of me, and according to project experience, the sea grass bed bare spot repair area sea matrix backfilling process is provided. The process is simple and feasible, has low operation requirement, can effectively control the suspended sand amount, can provide a matrix environment suitable for seaweed growth for a seaweed bed bare spot repair area by adopting the backfilling process, and has important significance for repairing the seaweed bed on a large scale. Disclosure of Invention The application mainly aims to provide a sea matrix batch production process for a seaweed bed bare spot repair area, which aims to solve the problem that the seaweed bare spot repair area cannot be suitable for seaweed growth due to the change of matrix conditions. A sea matrix batch production process for a sea grass bed bare spot repair area comprises the following steps: s1, sampling a marine matrix and performing particle analysis experiments in a bare spot repair area; s2, detecting and purchasing an ocean matrix outsourcing soil source; s3, screening and mixing the marine matrix outsourcing soil source; S4, sampling and detecting the mixed marine matrix; s5, bagging and storing. In a possible implementation manner, in step S1, when the ocean matrix in the bare spot repair area is sampled, 1 sediment column sample with the vertical direction of 70cm is taken from three random positions along the edge of the bare spot pit outwards by 20cm, and the sediment column samples are sent to a laboratory with corresponding qualification for detection. During the particle analysis experiment, each columnar sample is cut into two sections of 0-30cm and 30-70cm, and the sample is subjected to screening of 4 particle groups of >2mm, 2-0.075 mm, 0.075-0.005 mm, 0.005mm and the like by adopting a screening method and a water method, so that a bare spot pit sediment particle grading data analysis result statistical table is obtained. In a possible implementation manner, in step S2, 3 samples are randomly sampled from different positions of each 100m 3 of the soil source to be purchased, the mass of each sample is not less than 1.5kg, the samples are sent to a laboratory with corresponding qualification for quality detection, and when the detection result meets the quality requirement of the ocean sediment of class I, the samples can be purchased as an outsourcing soil source. In a possible implementation manner, in step S3, 3-level screening is adopted for the external soil purchasing source, namely screening is carried out according to the particle sizes of sand (2-0.075 mm), silt (0.075-0.005 mm) and clay (< 0.005 mm), a mesh screen method is adopted, each-level grading screening of the same soil source is repeated for 3 times, and the external soil purchasing source is subjected to tedding and airing through machinery before screening, so that the natural water content of the soil source to be screened is ensured to meet the stirring requirement. In a possible implementation manner, in step S3, mixing according to the volume ratio of the grain sizes of sand (2-0.075 mm), silt (0.075-0.005 mm) and clay (< 0.005 mm) in the analysis result of the sediment grain composition data in step 1, if the material does not meet the construction amount, purchasing the soil source with the missing grain size, and selecting the missing grain size for supplementing after repeating the screening step. In one possible implementation mode, the excavator and the loader are adopted to mix together, the mixing time is not less than 8 hours every 1000m 3, the grading mixing uniformity is ensured, and when the n