128 results about "Salt marsh cordgrass" patented technology

The invention provides a spartina alterniflora ecological environment damage value assessment method, medium and system, and belongs to the technical field of spartina alterniflora ecological environment damage assessment. A time-space damage analysis model based on a graph convolutional network is utilized to process a complex factor interaction relationship, a time weight factor correction model is established to quantify the dynamic change of a cumulative effect, and a biological inhibition factor effect model is combined to analyze the synergistic effect of multiple inhibition mechanisms such as local reed competition, natural enemy insect control, salt stress and the like. Accurate damage quantification and prevention and control strategy formulation are realized through the regional ecological environment damage value comprehensive evaluation model and the inhibition factor optimal configuration model, and the technical problem that the accuracy of ecological damage value evaluation is insufficient due to the fact that a multi-ecological factor interaction mechanism in the spartina alterniflora invasion process cannot be effectively analyzed in the prior art is solved.

The invention relates to a large-scale comprehensive treatment method for spartina alterniflora, which has the advantages that firstly, conventional multi-time cutting is replaced by deep digging of spartina alterniflora, so that the manufacturing cost is saved, and the construction period is shortened; secondly, the conventional repeated plowing and outward transportation are replaced by adopting a burying and compacting mode, so that the manufacturing cost is saved, and the construction period is shortened; thirdly, a new soil backfilling technology is adopted, new soil hydraulic reclamation is completed by laying a hydraulic reclamation pipeline, oxygen is further blocked, and meanwhile, salt marsh vegetation planting conditions are achieved; and fourthly, the original ecology is restored through salt marsh vegetation replacement. The method is economical, efficient and simple in procedure, the vegetation habitat of the wetland is restored, the ecological function of the wetland is improved, and the original ecology can be restored while the spartina alterniflora is managed.

The invention discloses a coastal wetland grass seed classification method based on sentinel No.2 time sequence analysis and a random forest, and the method comprises the steps: extracting spectrum, texture and polarization parameters as classification variables through combining a sentinel No.2 multi-temporal optical image and sentinel No.1 radar data; and the monthly NDVI maximum time sequence of the sentinel No.2 image is utilized to analyze and capture the difference characteristics of the grass seeds in the growth peak period, the aging period and the change rate, a time difference vegetation index is constructed, and the distinguishability of reed and spartina alterniflora with similar spectral characteristics is enhanced. A random forest algorithm is adopted to carry out classification modeling in combination with a suaeda salsa index, an SHAP method is introduced to carry out visual analysis on the model, contribution of characteristic variables in grass seed identification is quantified, and interaction between characteristics and an influence mechanism of the characteristics on a classification result are disclosed. And finally, the classification precision is evaluated through ten-fold cross validation, and the robustness and reliability of the model are ensured.

The invention provides a spartina alterniflora invasion risk grade evaluation method, medium and system, and belongs to the technical field of spartina alterniflora invasion risk evaluation.Intertidal zone environment monitoring equipment is established to obtain multi-dimensional environment data in a tide period, and a tide inundation influence matrix and a tide emerging growth matrix are constructed; a matrix multivariate decomposition technology is combined with a minimum spanning tree algorithm to extract key environment factors and growth factors, a multi-layer neural network is utilized to construct a risk assessment model integrated with a gating weight adjustment mechanism, network parameters are dynamically adjusted through a tidal change influence coefficient, accurate quantitative assessment of the spartina alterniflora invasion risk is realized, and the risk assessment accuracy is improved. A risk early warning mechanism of differential monitoring frequencies is established, continuous improvement of a risk assessment model is realized based on iterative optimization of monitoring frequency adjustment coefficients, and the technical problem of insufficient accuracy of spartina alterniflora intrusion risk assessment in a tidal environment is solved.

The invention discloses a sea-land collaborative coastal wetland ecological quality remote sensing evaluation method under a spartina alterniflora expansion background, and the method comprises the steps: obtaining multi-source remote sensing data of a research region, and carrying out the preprocessing of the data, and obtaining a preprocessed remote sensing image; according to the preprocessed remote sensing image, obtaining a salt marsh vegetation space-time distribution diagram of the research area; remote sensing evaluation is conducted on coastal wetland land and water body ecological quality, land ecological quality remote sensing evaluation indexes integrate NDVI, WET, NDSI, LST and DHI, and water body ecological quality remote sensing evaluation indexes integrate TSM, WST, CDOM and Chl-a; and finally, quickly obtaining the ecological quality change of the affected area of the spartina alterniflora through a spartina alterniflora change condition mask evaluation result. The ecological quality remote sensing evaluation method provided by the invention is more suitable for the coastal wetland under the background of spartina alterniflora expansion, and a scientific basis is provided for making coastal wetland ecological management and protection strategies.

The invention discloses an integrated removal and treatment method for spartina alterniflora in a mudflat wetland. The integrated removal and treatment method sequentially comprises the steps that a construction operation area is divided; mowing the spartina alterniflora for more than three times in the construction operation area, and airing the crushed straws; performing anaerobic landfill on the straws into the first landfill ditch; carrying out more than two times of root system ploughing on the construction operation area which is already cut; a second landfill ditch with the depth not smaller than two meters is dug, and the ploughed spartina alterniflora root system is placed into the second landfill ditch; and covering soil and compacting the second landfill ditch. According to the method, the formation of mature seeds of the spartina alterniflora can be effectively prevented, the sexual propagation path of the spartina alterniflora can be effectively cut off, the surface of the first landfill ditch after landfill is no longer suitable for growth of the spartina alterniflora, mowing and ploughing are carried out in different areas at the same time, the spartina alterniflora is prevented from sprouting again, the treatment efficiency of the wetland spartina alterniflora is further improved, and the economic benefit is increased. Vegetative propagation of spartina alterniflora is avoided, repeated treatment of spartina alterniflora is avoided, and the treatment cost of spartina alterniflora is reduced.

According to the method for effectively removing the spartina alterniflora, deep digging and layered inverted burying are conducted on the spartina alterniflora in a treatment area, it is ensured that overground parts and shallow surface plants are all integrally inverted and buried in soil which is 140 cm or below away from the ground, the plants are isolated from light and air, and the effect of removing the spartina alterniflora is achieved. Then the underground part is integrally inversely buried above the inversely buried overground part, the overground part is thoroughly covered, deep isolation is ensured, the regeneration capacity of the overground part is fundamentally blocked, and thorough deep digging and layered inversely buried burying of the spartina alterniflora in the whole treatment area are sequentially and progressively completed. The method does not need to use chemical agents, is environmentally friendly, easy and convenient to operate, high in durability and suitable for ecological management of large-area beach wetlands, effectively restrains rejuvenation of spartina alterniflora and maintains ecological balance.

The invention provides a method and a device for determining an optimal vegetation index of spartina alterniflora. The method provided by the invention comprises the following steps: acquiring hyperspectral image data of spartina alterniflora; determining a target wave band corresponding to each vegetation index based on the spectral characteristics of the hyperspectral image data in combination with the spectral characteristics of various vegetation indexes; for each observation point, respectively calculating each vegetation index under the observation point based on the reflectivity information under the target wave band; acquiring field sampling data of the spartina alterniflora; the field sampling data comprises vegetation coverage data of spartina alterniflora under a plurality of field sampling points; for each observation point, matching the vegetation index under the observation point with the vegetation coverage data under the corresponding field sampling point, and establishing a matching relationship; and for each vegetation index, calculating the correlation between the vegetation index under each observation point and the vegetation coverage under the corresponding field sampling point based on the matching relationship, and screening the optimal vegetation index based on the correlation.

The invention relates to the technical field of ecological management, in particular to mud flat spartina alterniflora harvesting and baling equipment and management system.The mud flat spartina alterniflora harvesting and baling equipment comprises a main body, and a harvesting module, a picking module, a baling module, a power system, an ecological restoration module and a discharging and transporting system are arranged in the main body; the harvesting module and the picking module respectively comprise a harvesting assembly and a picking assembly, and the power system is used for driving the harvesting assembly and the picking assembly. The rotary motor serves as a power source to drive the harvesting assembly, the picking assembly and the conveying assembly to work, the structure is ingenious, and electric energy consumption is reduced; the mudflat spartina alterniflora harvesting and baling treatment system has the advantages of being efficient, environmentally friendly and intelligent, and the efficiency problem in spartina alterniflora removal and treatment can be effectively solved.

The invention relates to the technical field of spartina alterniflora image recognition, in particular to a spartina alterniflora distribution condition monitoring and early warning method based on image recognition, which comprises the following steps: extracting vegetation features by utilizing Sentinel-1 radar data and Sentinel-2 optical remote sensing data, and realizing spartina alterniflora region classification in combination with a TWDTW model to obtain a first spartina alterniflora region; calculating an ecological factor and a water conservancy factor of the first spartina alterniflora region, and generating a graded region through weighted summation; and regularly using the unmanned aerial vehicle to shoot ground images of a first spartina alterniflora area according to the priority of the graded areas, and using the target detection model to identify distribution change of the spartina alterniflora, generating indexes of a coverage area change rate, a diffusion rate and a coverage density change rate, and forming a dynamic early warning report. According to the method, the spartina alterniflora area is identified and the diffusion trend of the spartina alterniflora is analyzed in real time, so that the monitoring accuracy of the distribution condition of the spartina alterniflora is improved, and a scientific decision basis is provided for ecological environment protection and spartina alterniflora management.

The present invention belongs to the field of pesticides, and particularly relates to a herbicidal composition and its application. The herbicidal composition comprises an effective herbicidal amount of active ingredient A and active ingredient B. Among them, active ingredient A is, and active ingredient B is selected from one or more of the following compounds: haloxyfop-P-methyl, cyhalofop-butyl, imazapyr. This composition can effectively control weeds such as Spartina alterniflora, and has the characteristics of expanding the herbicidal spectrum, reducing the application amount, being able to produce a synergistic effect and solving resistant weeds, etc.

The invention discloses a spartina alterniflora management method based on mechanical mowing and tidal water level regulation, which comprises the following steps: using mechanical mowing equipment to mow spartina alterniflora in the growth peak period of spartina alterniflora, and cutting the overground part to the height less than 5cm; dividing the treatment area into high, medium and low tidal flat according to the tidal flat elevation, and establishing a dam filled with sand and covered with degradable cloth in each area; adjusting the height of the dam according to the tidal cycle and the tidal flat elevation, so that the high tidal flat area is submerged by natural saline water at least twice a month during the large tide; after the spartina alterniflora is treated, the sandy dam and the anti-scouring cloth are gradually removed, the original ecological system of the wetland is restored, and local plants are planted to promote natural restoration. According to the method, low-cost, high-efficiency and eco-friendly long-term treatment of the spartina alterniflora can be realized in a large-area mud flat area, so that the operability, sustainability and environmental friendliness of the treatment effect are remarkably improved, and the method has wide popularization and application values.

The invention provides a method for removing spartina alterniflora in a lagoon face environment, and belongs to the technical field of spartina alterniflora governance, and the method comprises the following steps: S10: data collection: collecting, sorting and analyzing hydrogeological data, tide water conditions and spartina alterniflora distribution conditions of a governance area; s20, dividing a treatment area: dividing the treatment area into a high tidal flat area, a middle-low tidal flat area and other areas through treatment according to field survey data and hydrogeology in combination with the current situation environment of the treatment area; and S30, a treatment scheme is formulated in a targeted manner. The step S30 comprises the following steps: S310, for a high tidal flat area, a'deep burying method 'is adopted for block and ridge treatment. According to the method, for the treatment of spartina alterniflora, different treatment environments can be combined, treatment is carried out according to an established method, quality monitoring is carried out in the treatment process, surveying and lofting are carried out according to different process treatment areas before treatment, colored flags and other obvious markers are arranged for identification, the different process treatment areas are distinguished, and patrol inspection is carried out regularly after treatment is completed; and the found problem is rectified in time.

The invention discloses a method for promoting the growth of coastal wetland scirpus mariqueter by using spartina alterniflora biochar, which comprises the following steps: S1, collecting spartina alterniflora, cleaning, naturally airing, cutting into small sections of less than 5 cm, drying at 60 DEG C, crushing, sieving by a 60-mesh sieve, and performing anaerobic pyrolysis at 500 DEG C for 2 hours to prepare biochar; s2, coast wetland salt marsh soil is collected, 0%, 0.5%, 1% and 3% of biochar are added according to the weight ratio, and the biochar and the soil are mixed to be uniform to prepare different treatment groups; s3, healthy scirpus mariqueter seedlings are selected, transplanted into the soil containing the biochar and cultured for 9 months under the greenhouse condition; s4, regularly measuring plant biomass, root morphology, reproduction characteristics and soil indexes, and finally screening 1% biochar addition concentration as an optimal scheme; according to the method, resource utilization of invasive plants is achieved, the wetland carbon sequestration potential is enhanced, and a scientific basis and an application approach are provided for coastal wetland ecological restoration and blue carbon sink management.

The invention relates to a mudflat operation boat tractor, and belongs to the technical field of spartina alterniflora governance, the mudflat operation boat tractor comprises a boat tractor, the back of the boat tractor is provided with an anti-silting assembly, a mowing and crushing assembly, a rotary tillage assembly or a film mulching assembly, the anti-silting assembly is used for increasing the contact area of the contact surface of the boat tractor and the ground, the silting possibility of the boat tractor is reduced, and the mowing and crushing assembly is used for mowing and crushing the boat tractor. The mowing and crushing assembly is used for mowing the spartina alterniflora so as to reduce the height of the spartina alterniflora, the rotary tillage assembly is used for pressing the crushed spartina alterniflora into slurry and turning the slurry below a mud flat to a surface layer, and the film mulching assembly is used for laying an agricultural film to the spartina alterniflora so as to inhibit photosynthesis of the spartina alterniflora. The method has the effect of improving the spartina alterniflora treatment efficiency.

The invention discloses a phenological-based spartina alterniflora removal and treatment method, which is characterized by comprising the following steps of: before seeds of spartina alterniflora are mature, digging a gully on the side surface of a distribution area of the spartina alterniflora; digging the spartina alterniflora close to the gullies along with roots, filling the spartina alterniflora into the gullies to form soil piles, and forming new gullies at the positions where the spartina alterniflora is dug; digging the spartina alterniflora close to the new gullies with roots again and filling the spartina alterniflora into the new gullies to form soil piles, and repeating the steps in sequence until the spartina alterniflora in the distribution area of the spartina alterniflora is completely dug and filled; in the reviving period and the flowering period of the spartina alterniflora in the next year, rotary root management and protection are conducted on the distribution area of the spartina alterniflora after ridge ploughing and control, and relapse and secondary invasion of the spartina alterniflora are prevented; the method has the advantages that on the basis of phenology of the spartina alterniflora, removal and treatment and later-stage management and protection are carried out according to growth characteristics of the spartina alterniflora, the removal and treatment effect is good, the removal and treatment recurrence rate is low, operability is high, and the removal and treatment cost is low.

The invention provides a method for removing and treating harmful vegetation such as spartina alterniflora by using phenological characteristics, and provides a natural-based solution (NbS) by using biological phenological characteristics in combination with actual growth conditions and engineering cases of the spartina alterniflora. On one hand, the control opportunity is accurately butted with the key phenological periods (such as a seedling period, an elongation period, a blooming period and a seed maturation period) of the spartina alterniflora, and on the other hand, the phenological difference between the spartina alterniflora and the reed of the same gramineae which is most likely to be mixed and difficult to distinguish is fully utilized, and the reed which is most fragile, most likely to kill and difficult to distinguish is selected. And intervention is carried out on a time window which has the minimum influence on an ecological system, so that the efficient, environment-friendly and sustainable treatment target is achieved.

The invention belongs to the technical field of computer vision and deep learning, and particularly relates to a spartina alterniflora intelligent identification method, which comprises the steps of S1, data acquisition and data set establishment; s2, constructing a model; s21, a pre-training model YOLOv8 is downloaded; s22, modifying model configuration; s221, using an OfficientViT as a backbone network of the YOLOv8 model, wherein the OfficientViT Block comprises a lightweight MSA (Multi-Server Algorithm) and an improved C-MBConv (Carrier-Multicast Block Conv), and a YOLOv8 model is used as a backbone network of the YOLOv8 model; s222, before entering the SPPF, firstly entering the improved C2fDattetion module for processing, and after entering the SPPF, entering the improved C2fDattetion module for processing; s223, an optimized C2fGhostNet network is used as a convolution layer, and the C2fGhostNet network is used S23, carrying out model training and testing; and S3, identifying the spartina alterniflora. According to the method, the backbone network and the neck structure of the model are optimized, so that the recognition precision and the reasoning speed of the model under a complex background are remarkably improved.

The invention provides a method for preparing biochar from spartina alterniflora and application of the biochar in nitrogen and phosphorus removal, and belongs to the technical field of biological materials. According to the method, the widely distributed spartina alterniflora is converted into the biochar, so that high-value utilization of invasive plants is realized, and environmental pollution is reduced. The biochar provided by the invention has excellent performance in the aspects of nitrogen and phosphorus removal, effectively improves water eutrophication, improves water quality and protects an aquatic ecosystem. The preparation method is simple, cost is reduced, and large-scale production is facilitated. And the method is environment-friendly, does not generate secondary pollution, and accords with sustainable development. The invention not only provides a new environment restoration material, but also opens up a new way for biomass resource utilization, has remarkable economic and social benefits, improves public health, improves life quality and protects biological diversity.

The invention discloses an embankment pavement paving device and method capable of inhibiting spartina alterniflora, relates to the field of embankment pavement paving, and solves the problem that when an existing embankment pavement paving device is used, the position of a storage box is fixed when the storage box runs on different slopes, so that raw materials on the bottom slope are difficult to fully discharge. Comprising a machine body, a laying mechanism and a spraying mechanism, a weeding machine is arranged at the front end of the machine body, the laying mechanism comprises a connecting shaft, a storage box, a control piece and a stirring and mixing piece, an output port is formed in the bottom end of the storage box, and the spraying mechanism comprises a liquid storage box. And meanwhile, the storage box can swing around the connecting shaft by utilizing the gravity of the storage box, so that the output port can be always in a vertically downward state, the output efficiency of internal raw materials is improved, the stirring and mixing part can be linked to perform auxiliary stirring operation in the swing process of the storage box, and herbicide is output to the road surface through the spraying mechanism in an auxiliary manner.

The invention relates to the technical field of data processing, in particular to an ecological environment detection method and device based on multi-source data and a storage medium, and the method comprises the steps: collecting spatial distribution parameters and environmental stress parameters; constructing an intrusion space index based on the target plaque area and the target plaque boundary perimeter; constructing a habitat stress index according to the daily average submerging duration and the soil salinity of the root system layer; constructing a diffusion risk factor according to the plaque area of the associated region of the target plaque, constructing a risk index based on the diffusion risk factor, the intrusion space index and the habitat stress index, and constructing a plaque treatment priority; and constructing an adjustment coefficient according to the canopy temperature daily difference, constructing an update coefficient according to the seed removal rate and the adjustment coefficient, and updating the plaque treatment priority based on the update coefficient and the target plaque area. According to the method, accurate diagnosis, risk early warning and scientific sorting of treatment priorities of the spartina alterniflora invasion situation are realized.

The invention relates to a liquid chromatogram-tandem mass spectrum determination method for herbicide imazapyr and haloxyfop-R-methyl in aquatic products, through a simple sample pretreatment method and an instrument analysis method, the detection sample range is increased to various aquatic product matrixes such as fishes, shrimps, crabs and shellfishes, and the method is simple, convenient, rapid and high in sensitivity. The method has the advantages of low reagent dosage, high sensitivity, low cost, high accuracy and good stability. According to the method, a technical means is provided for evaluating the toxic effect of the Spartina alterniflora herbicide, i.e., the melatryn and the cyhalofop-ethyl on aquatic organisms and monitoring and evaluating the risk of the Spartina alterniflora.

The invention discloses a suaeda glauca rhizosphere growth-promoting bacterium preparation for targeted degradation of beach weeds and a preparation method of the suaeda glauca rhizosphere growth-promoting bacterium preparation. The preparation is prepared by compounding three specific functional strains, namely lactobacillus plantarum, bacillus atrophaeus and bacillus amyloliquefaciens, and supplementing with a composite carrier consisting of sodium alginate, humic acid and diatomite. The preparation method comprises the steps of strain activation, high-density fermentation, carrier pretreatment and spray adsorption forming. According to the invention, through the synergistic effect of multiple strains, on one hand, root exudates of an invasive plant Spartina alterniflora are degraded in a targeted manner, and weed suppression substances are secreted, so that the growth of the plant Spartina alterniflora is effectively inhibited; on the other hand, the strain is efficiently colonized at the rhizosphere of suaeda salsa to secrete growth-promoting substances and promote planting of suaeda salsa. The preparation is specially designed for a high-salt and high-humidity mudflat environment, the adversity survival and rhizosphere colonization capability of the strain is remarkably improved by the composite carrier, efficient coupling of biological control of mudflat invasive weeds and local vegetation ecological restoration is realized, and the preparation has the advantages of environmental friendliness, long lasting period and simplicity and convenience in application.

The invention discloses a management method for large-scale removal of spartina alterniflora, and relates to the technical field of ecological environment management, and the method comprises the following steps: S1, growth surveying and mapping: surveying the distribution density and plant height of spartina alterniflora in a to-be-managed area through an unmanned aerial vehicle remote sensing technology; the method comprises the following steps: S1, cutting spartina alterniflora with water before a flowering period in June to August, S3, directional ploughing: performing first ploughing along a direction perpendicular to a tidal creek by using a hydraulically-driven V-shaped deep ploughing plough, S4, insolating and dehydrating: keeping an exposed state of the ground surface after ploughing, and continuously insolating for 10 days by using natural light, S5, removing residues, S6, deeply burying in a layered manner, S7, performing biological inhibition, and S8, performing ecological restoration. Through the steps S1 and S3, accurate cutting and thorough crushing of main roots and transverse rhizomes of spartina alterniflora are achieved, the root cutting efficiency and range are greatly improved, and a foundation is laid for subsequent removal; through the steps S2 and S5, a full-dimension clearing system is formed, and the regeneration risk is remarkably reduced.

The invention discloses a spartina alterniflora harvesting and baling all-in-one machine, and relates to the technical field of spartina alterniflora harvesting and baling, the spartina alterniflora harvesting and baling all-in-one machine comprises a walking chassis, the front end of the walking chassis is connected with a rotating cylinder wall through a rotating piece, and the front end of the rotating cylinder wall is provided with a stalk cutting header; a stalk cutter used for cutting stalks and a header auger used for collecting the cut stalks are arranged in the stalk cutting header, the stalk cutter is arranged at the front end of the header auger, and a conveying chain harrow used for conveying the cut stalks is arranged in the rotating cylinder wall. The upper end part of the stalk cutting header is provided with a stalk collecting wheel for shifting stalks to the stalk cutter for cutting, and a hay cutter is arranged at the joint of the walking chassis and the wall of the rotating cylinder; according to the spartina alterniflora harvesting, smashing and baling device, the spartina alterniflora harvesting, smashing and baling functions can be achieved, the spartina alterniflora can be rapidly harvested and baled, and therefore moving of the follow-up harvested spartina alterniflora is facilitated, and sustainable treatment of the spartina alterniflora is promoted.

The invention discloses a comprehensive removal and treatment method for spartina alterniflora. The comprehensive removal and treatment method comprises the following steps: cutting; injecting water and dynamically regulating the water level; and putting benthonic animals and herbivorous fishes. According to the comprehensive removal and treatment method for the spartina alterniflora, photosynthesis and growth of the spartina alterniflora are inhibited through mowing and dynamic water level submerging; by introducing herbivorous fishes and benthic animals, the growth ability of the spartina alterniflora is weakened on the ground and underground respectively, the lasting and eco-friendly treatment effect is achieved, a biological control chain for comprehensively preventing and treating the spartina alterniflora is formed, regeneration of the spartina alterniflora is effectively controlled, and the risk that the spartina alterniflora is diffused in a water area is reduced.

The application discloses a Spartina alterniflora rapid treatment method based on MICP and belongs to the technical field of Spartina alterniflora treatment. The Spartina alterniflora rapid treatment method based on MICP comprises the following steps: step one, cutting Spartina alterniflora by using a mower; step two, scattering quicklime powder into a treatment area, and turning the quicklime powder and the cut Spartina alterniflora straw into soil; step three, uniformly inserting a plurality of degradable hollow bamboo poles into the soil, connecting the hollow bamboo poles with a grouting pump, and injecting a reaction solution into the soil through the hollow bamboo poles; step four, after the injection of the reaction solution is completed, blowing a layer of sea mud on the soil; and step five, planting local plant species on the sea mud. The method can utilize microorganisms to induce the generation of calcium carbonate precipitation. After the calcium carbonate precipitation, the calcium carbonate precipitation is adsorbed in soil particle pores to block soil pores, a dense hardened layer is formed to hinder the growth of Spartina alterniflora, Spartina alterniflora can be treated rapidly at one time, and the rapid repair of a tidal flat wetland ecosystem can be realized.

The invention belongs to the technical field of relapse monitoring after secondary invasion in a spartina alterniflora treatment area, and provides a spartina alterniflora relapse monitoring and evaluation method and system, electronic equipment and a storage medium. The method comprises the steps of remote sensing image collection, normal area elimination processing, area risk data generation, unmanned aerial vehicle collection path making, color image and multiband image collection and high-accuracy monitoring and evaluation. According to the method, the normal area of the satellite remote sensing image is removed, information irrelevant to spartina alterniflora is directly removed, the complexity of data input of the model is reduced, and the sensitivity of the model to abnormal information is improved; through the low-accuracy monitoring model and the high-accuracy monitoring and evaluation model, the satellite remote sensing monitoring is rapid, the unmanned aerial vehicle monitoring is accurate, and the monitoring reliability is further improved through two-stage monitoring; by processing the color image and the multi-band image, the appearance characteristics of the spartina alterniflora are highlighted, the image characteristics are optimized, and the model monitoring accuracy is improved.

This invention belongs to the field of wastewater treatment. It provides a manganese-supported sulfur-rich Spartina alterniflora denitrification material, its preparation method, and its application. This manganese-supported sulfur-rich Spartina alterniflora denitrification material is obtained by alkali-modified sulfur-rich Spartina alterniflora or alkali-modified sulfur-rich Spartina alterniflora biochar loaded with manganese oxides. The manganese-supported sulfur-rich Spartina alterniflora denitrification material of this invention has abundant pores and a large specific surface area, which is beneficial for the adsorption, catalytic oxidation, and microbial biofilm formation of nitrogen pollutants. It is also rich in carbon, sulfur, and manganese, and can directly release organic carbon sources. It can achieve efficient denitrification through multiple processes such as coupled nitrification, manganese ammonium oxidation, heterotrophic denitrification, manganese autotrophic denitrification, and sulfur autotrophic denitrification. The manganese-supported sulfur-rich Spartina alterniflora denitrification material of this invention is fixed on the surface of hard aggregates, elastic or soft carriers, and can be widely used in constructed wetlands, biological filters, deep denitrification in wastewater treatment plants, rural and agricultural wastewater treatment, and initial rainwater purification.

The invention relates to the technical field of cyanobacteria treatment, and in particular to a method and application of a Spartina alterniflora extract for inhibiting cyanobacteria blooms. The method comprises the steps of preparing a Spartina alterniflora extract, adding the Spartina alterniflora extract into a cyanobacteria growth environment, wherein the concentration of the Spartina alterniflora extract is 0.5-10 g / L. The invention uses the Spartina alterniflora extract to inhibit cyanobacteria blooms, thereby promoting resource utilization of the invasive plant Spartina alterniflora and treating cyanobacteria blooms. Meanwhile, the treatment process of cyanobacteria blooms is environmentally friendly and will not cause secondary pollution to water bodies, thereby providing better help for sewage treatment in China, reducing the environmental burden, and improving the high efficiency and greenness in the environmental treatment process.