149 results about "Plant community" patented technology

The invention provides an organic carrier in-root-rhizosphere growth-promoting microbial agent for ecological restoration of degraded grassland as well as a preparation method and application of the microbial agent, and belongs to the technical field of grassland ecological restoration and microbial agents. The organic carrier growth-promoting microbial agent disclosed by the invention is prepared from four kinds of growth-promoting bacteria (PGPE) in roots, four kinds of growth-promoting bacteria (PGPR) in roots and an organic carrier, the PGPE comprises terracotta warrior bacillus K4, bacillus 9-3-1, bacillus deserticola 11-5-4 and halomonas L31, the PGPR comprises serratia rubra 5, serratia rubra 23, cosinia cosinii 11 and enterobacter parabarium 24, and the organic carrier is a carbon-based organic fertilizer, a cattle and sheep manure organic fertilizer or biochar. When the organic carrier growth-promoting microbial agent is applied to the degraded grassland, the biomass and coverage of plant communities can be remarkably improved. The organic carrier growth-promoting microbial agent can be used for ecological restoration of degraded grassland.

The invention provides a healthy plant community construction method based on an urban green land nutrition relationship, and relates to a construction method of an urban green land plant community. The construction method comprises the following steps: selecting plant communities to construct species according to urban green land types and functional requirements; according to the plant community establishment species, determining the nutrition relationship between the phytophagous arthropods corresponding to the establishment species plants and the nutrition relationship between the phytophagous arthropods corresponding to the natural enemies; and selecting functional plants according to the corresponding nutrition relationship, and configuring the functional plants around the colonized plants to construct and form a healthy plant community based on the urban green land nutrition relationship. According to the construction method, healthy growth of plants in the urban green land, nutritional relation coupling and ecological system balance of the urban green land can be realized.

The invention relates to the technical field of seawall ecological transformation, and discloses a slope type seawall inner slope ecological transformation method which comprises the following steps: selecting a seawall section suitable for ecological transformation according to three first-level indexes, namely a seawall shoreline foundation, hydrology and water quality conditions and surrounding environment conditions; constructing a pool in the selected seawall section according to the terrain; constructing a pool base; and constructing a plant community in the water pool according to the life type, the phenological period and the salt tolerance of the plant. According to the method, a proper transformation section can be selected in combination with various environmental factors of a transformation area, then a corresponding water pool is constructed in combination with the landform, then a proper ecological material is selected to construct a substrate, and different plant communities are constructed in the water pool according to the characteristics of different plants. A natural-imitated seawall ecological space is built, the flood prevention and tide blocking functions of the seawall are guaranteed, the hygrophytes, aquatic plant communities and planktons can be utilized, an inhabiting and foraging environment is built for aquatic animals and hydrophilic birds, and the ecological service function of the seawall is improved.

The invention relates to the technical field of environment management, in particular to an intelligent aquatic plant community optimization system which comprises a community recognition module, an adaptive screening module, a spacing adjustment module, a growth monitoring module and a response regulation and control module. According to the invention, through dynamic monitoring of plant growth states and optimization treatment of spatial configuration, accurate management of aquatic plant communities is realized, the matching degree of plant species and environmental conditions is enhanced, spacing and density configuration of plant planting are improved, resource competition among plants is effectively dealt with, and the yield of aquatic plants is improved. Through multi-dimensional plant growth state feedback and nutrition state monitoring, the plant configuration is adjusted in real time, so that the dynamic management of the community is more flexible, the singleness of the community structure is avoided, and effective intervention is performed aiming at the water eutrophication problem. The adaptability and growth quality of the plants are improved, overgrowth or decline of the plants in an unsuitable environment is avoided, and ecological restoration and water health are promoted.

The invention relates to the technical field of urban ecological engineering, in particular to a parking lot authigenic plant planting method based on carbon immobilization. The invention provides a parking lot authigenic plant planting method based on carbon immobilization, which is characterized in that a three-stage ecological rotation mechanism is introduced into vegetation construction according to the sequence of a pioneer plant period, a green manure turning and pressing soil returning period and an authigenic plant community succession period to form a parking lot authigenic plant pool, and the parking lot authigenic plant planting based on carbon immobilization is realized. The invention aims to improve the greening ecological benefit and carbon sink capacity of the parking lot by optimizing the soil structure and adopting the crop rotation technology, provides a plant pool structure which adapts to the environment of the parking lot, has high-carbon solid storage capacity and can realize autonomous ecological circulation, and improves the soil health, inhibits diseases and prolongs the plant coverage period through the crop rotation technology. The problems that traditional parking lot greening depends on manual intervention, and the carbon sink benefit is low are solved, and continuous carbon sink under the low maintenance cost is achieved.

The invention discloses a desert area drought-enduring plant community integrated construction method, and the method comprises the steps: obtaining soil desertification degree distribution data and environment dynamic data of a target desert area, and carrying out the region division; constructing a drought-enduring plant community space configuration model of each region; carrying out multi-dimensional ecological data monitoring, and constructing a soil desertification dynamic change matrix; predicting the future desertification trend of each region; and dynamically adjusting a plant community configuration strategy. According to the method, the success rate and sustainability of vegetation restoration in the desert area are remarkably improved, the self-restoration process of an ecological system is accelerated, and the ecological restoration cost is reduced.

The invention relates to an indigenous plant community configuration and dynamic optimization system suitable for a combined pollution site, and belongs to the technical field of environmental ecological restoration and soil pollution treatment. Comprising an indigenous plant resource database module, a pollution site information acquisition and processing module, a plant community intelligent configuration module, a real-time monitoring and data feedback module, a dynamic optimization decision module and a visual interaction module. According to the system, intelligent screening and community construction of indigenous plants are achieved through multi-source data fusion and a multi-target optimization algorithm, a sensor network and a machine learning model are combined to conduct real-time monitoring and dynamic regulation and control on the remediation process, the remediation efficiency, community stability and ecological safety of a heavy metal and organic pollutant combined pollution site are improved, and the remediation cost is lowered. And full-period intelligent, low-cost, green and sustainable ecological restoration management is supported.

The invention relates to the technical field of ecological management and livestock grazing, in particular to a method for improving grassland productivity stability based on multi-animal-species sequential differentiation grazing in different growth stages of plants and application of the method. The multi-animal-species time sequence differentiation grazing method based on different growth stages of plants comprises the following steps: (1) selecting low-ingestion-selectivity livestock for grazing from a pasture elongation stage to seed maturation; and (2) from the mature period to the withered and yellow period of the forage grass seeds, selecting high-ingestion-selectivity livestock for grazing. According to the grazing method, the spatial environment difference and the species response difference of the grassland can be enhanced, so that the functional asynchronism and the ecological diffusion capability of plant communities are improved, and a basis is provided for sustainable development of ecological animal husbandry.

This invention provides a simulation method based on the functional attributes of forest and grassland communities, comprising: acquiring community survey data and individual plant functional trait data of the target forest and grassland vegetation; calculating the functional attributes of the plant community; acquiring the actual values ​​of key hydrological parameters corresponding to the target forest and grassland vegetation; training the model using a random forest algorithm to construct a nonlinear mapping model; integrating the nonlinear mapping model into a parameterized process and outputting the simulation results. The hydrological simulation method based on the functional attributes of forest and grassland communities provided by this invention establishes a nonlinear mapping relationship between these ecological attributes and key hydrological parameters using a random forest algorithm, thereby dynamically driving the simulation of regional hydrological processes. This achieves a refined characterization of the mechanism by which vegetation community structure and function affect hydrological processes, significantly improving the simulation accuracy of the model in scenarios such as vegetation restoration and configuration optimization.

The application discloses a kind of water ecological restoration plant community management method and system based on neural network, method includes: based on SOFM neural network, water body stratification detection is carried out to target water area, and stratification result is obtained;According to stratification result, dynamic hydrological data sampling is carried out to each water layer using water body monitoring equipment, and the sampling result of each water layer is obtained;According to aquatic plant distribution data and aquatic animal distribution data, corresponding biological information and water layer natural ecological environment data are called to construct target database;Based on BP neural network, according to target database, determine the dynamic change rule of target water area within a predetermined time;Judge whether the dynamic change rule meets the preset restoration target, according to the judgment result, based on ecological restoration principle, calculate the plant species and corresponding quantity required for each water layer, and obtain the calculation result;According to the calculation result, the plant community of target water area is managed using plant management equipment.

The invention discloses a method for recovering vegetation of a mildly-degraded Coilin grassland. The method comprises the following steps: S1, investigating plant community characteristics and biomass; s2, determining the quality of the forage grass in the plant community; s3, collecting a soil sample; s4, reseeding: grass seeds are reseeded on the mildly degraded Coilin grassland, the reseeded grass seeds are agropyron perennioides and adsura adsura, and the mass ratio of the agropyron perennioides to the adsura adsura is (6-8): (2.5-3.5); the reseeding amount is 10-20 kg / hm < 2 >; s5, fertilization: applying a fertilizer bag, the fertilizer bag being a nitrogen-phosphorus-potassium mixed fertilizer, the nitrogen-phosphorus-potassium mixed fertilizer comprising a nitrogen fertilizer, a phosphorus fertilizer and a potash fertilizer, according to the plant community conditions of the mildly degraded Coilsein grassland, through reseeding and reasonable fertilization, the monoennial and biennial plants, perennial gramineae, hybrid grass and perennial leguminous plants of the Coilsein grassland can all grow, the yield of the Coilsein grassland is increased, and the yield of the Coilsein grassland is increased. And the pH value of the soil tends to be neutral, so that the mildly degraded Coilin grassland vegetation is recovered.

This invention discloses a method for synergistically improving grassland plant diversity and productivity, relating to the field of degraded grassland ecological restoration technology. The method involves selecting degraded Leymus chinensis meadow steppe as the restoration target and delineating restoration plots. Within the operational window, targeted aeration and fertilization are carried out on the restoration plots to obtain improved restoration plots. These improved restoration plots are then continuously fenced off for at least two growing seasons for natural enclosure. This invention, through the synergistic effect of targeted aeration and precise fertilization, breaks through soil physical limitations and replenishes nutrient bottlenecks, achieving simultaneous improvement in plant diversity and productivity of degraded Leymus chinensis meadow steppe. It effectively optimizes the plant community structure and promotes the evolution of degraded communities into stable perennial herbaceous communities. Furthermore, this invention features highly standardized and mechanized operational parameters, high restoration efficiency, and is suitable for the large-scale restoration needs of degraded Leymus chinensis meadow steppe, balancing ecological benefits and production potential, and has broad application prospects.

The invention relates to the technical field of ecological restoration, and discloses an engineering disturbance area plant diversity improvement method for segmented diversified compound fertilizer application, which comprises the following steps: (1) analyzing the current situation of plant community distribution in an engineering disturbance area and plant communities existing before engineering disturbance; (2) selecting other plant species suitable for survival according to the climate environment of the engineering disturbance area; (3) screening plant seeds existing before engineering disturbance and plant seeds suitable for the climatic environment of the engineering disturbance area, and mixing to obtain various plant seeds; (4) sowing various plant seeds into the engineering disturbance area, and then carrying out segmented fertilization; according to the fertilization method, the ecology of the engineering disturbance area can be effectively restored, and by enriching the diversity of plants in the engineering disturbance area, the ecological cycle of the engineering disturbance area is improved, and the ecological environment is improved.

The invention provides a submerged plant-microorganism synergistic lake ecological restoration system and application thereof, and belongs to the technical field of water body ecological restoration. The submerged plant-microorganism synergistic lake ecological restoration system comprises a functional complementary symbiotic combination module and a three-dimensional microenvironment enhancement module, the functional complementary symbiotic combination module comprises a submerged plant community, a microbial community, an inducer and a nutritive salt regulating agent; the three-dimensional microenvironment enhancement module comprises a rhizosphere microenvironment optimization unit, a water body microenvironment regulation and control unit and a substrate microenvironment improvement unit. According to the system, by constructing the functional complementary symbiotic combination module and the three-dimensional microenvironment enhancement module, efficient coupling and synergistic interaction of submerged plants and microbial communities are achieved, and lake water quality and ecology can be systematically and comprehensively improved.

The invention discloses a coal mine wasteland partition vegetation configuration method integrating water and soil conservation and biodiversity improvement. Belongs to the field of coal mine abandoned area ecological restoration. According to the method, environment multi-source data are comprehensively utilized, accurate ecological partitioning of waste land, intelligent screening and configuration of functional plant communities and optimization of an ecological landscape network structure are achieved, dynamic feedback and a self-adaptive adjustment mechanism are fused, and the restoration process is monitored in real time and continuously optimized. According to the method, the limitation of a traditional restoration means in extensive partitions, single plant configuration, insufficient landscape connectivity and the like is broken through, the biological diversity and the ecological system stability are effectively improved, the human intervention cost is reduced, efficient and sustainable management of mine wasteland ecological restoration is achieved, and the method has wide application and popularization value.

The utility model discloses a planting device suitable for a multilayer aquatic plant community, which relates to the technical field of aquatic plant planting and comprises a water surface planting platform, an underwater planting platform and an assembly structure. By arranging the water surface planting platform, the underwater planting platforms and the assembling structures, the multiple underwater planting platforms can be assembled below the water surface planting platform through the assembling structures, after the device is put into water, the water surface planting platform can float on the water surface, the multiple underwater planting platforms can be located in the water, then water plants such as duckweed can be planted in the planting pots, and the planting efficiency is improved. Then submerged plants and emergent aquatic plants are planted in a planting cylinder in water, vesuvianite can be placed in the planting cylinder to fix root systems of the plants so as to prevent the plants from being separated from the planting cylinder, when the water surface ascends and descends, a floating ring can be located on the water surface all the time, and a lifting rope can pull the underwater planting platform; therefore, the underwater planting platform is always underwater, and death caused by dehydration of aquatic plants is avoided.

This application relates to an ecological treatment process and structure for effluent purification, belonging to the field of effluent purification technology. It includes: S1, ecological enhancement zone treatment, where effluent undergoes preliminary purification through a composite ecological filter bed, artificial aquatic plant purification belt, three-dimensional ecological floating bed, and pollution-tolerant plant purification belt; S2, ecological buffer zone treatment, where effluent from the ecological enhancement zone is introduced into the ecological buffer zone for secondary purification by submerged plants; S3, ecological demonstration zone treatment, where the effluent treated in the ecological buffer zone is introduced into the ecological demonstration zone for tertiary purification; S4, ecological stabilization zone treatment, where an aquatic plant community is constructed in the ecological stabilization zone, and zooplankton, benthic animals, and microorganisms are introduced to optimize the community, resulting in a fourth purification of the effluent. This application eliminates the need for fish, relying on microorganism-plant synergy for direct denitrification. Animals only assist in removing impurities, resulting in no additional nitrogen load and thus ensuring the stability of the purification system.

This invention provides a geochemical method and system for identifying phytoplankton community succession, relating to the fields of aquatic environmental geochemistry and ecological environment monitoring. The method involves simultaneous sampling of a target water body to determine water chemical parameters, dissolved inorganic carbon, particulate organic carbon, and stable carbon isotopes, while simultaneously acquiring data on the species composition and relative abundance of phytoplankton. Based on the water chemical parameters, the forms and concentrations of dissolved inorganic carbon in the water body are determined to ascertain the carbon source utilization pattern. The stable carbon isotope shift in the water body is determined based on the dissolved inorganic carbon, particulate organic carbon, and stable carbon isotopes. Furthermore, the stage of phytoplankton community succession in the target water body is identified by comparing the carbon source utilization pattern and the stable carbon isotope shift with the indicators. This invention enables early identification of the community succession process based on changes in carbon source utilization patterns, even before changes in phytoplankton community morphology become apparent.

The present application relates to the technical field of ecological restoration, and discloses a shallow lake submerged plant community configuration method and device, the method comprising: establishing a submerged plant grading screening model; wherein the submerged plant grading screening model comprises habitat condition grading, substrate condition grading and water quality grading; screening a plurality of species of submerged plants using the submerged plant grading screening model to determine the species of the screened submerged plants; obtaining submerged plant trait parameters for the plurality of species, and calculating a comprehensive tolerance index for each species of submerged plant based on the submerged plant trait parameters for the plurality of species; determining a species priority based on the comprehensive tolerance index for each species of submerged plant; and configuring a shallow lake submerged plant community based on the species of the screened submerged plants, the species priority and engineering parameters. The present application comprehensively considers ecosystem resilience and species diversity, ensures functional complementary configuration of species, and guarantees long-term stability of submerged plant community configuration in water ecological restoration.

The invention discloses a plant community structure inversion and ecological restoration strategy generation system and method, and relates to the technical field of ecological monitoring and restoration. The system comprises an unmanned aerial vehicle low-altitude remote sensing module, an image processing and feature extraction module, a machine learning inversion module, an ecological restoration strategy generation module and an image processing and feature extraction module which are connected in sequence and are used for carrying out preprocessing and feature extraction on a vegetation remote sensing image; the machine learning inversion module is internally provided with a trained plant community structure inversion model and is used for inverting species composition and space structure information of the plant community according to the extracted features; and the ecological restoration strategy generation module is used for generating an ecological restoration strategy scheme containing the varieties, the number and the spatial positions of the replanting plants according to the inverted species composition and spatial structure information in combination with a preset ecological restoration target. According to the method, the plant community structure can be quickly, accurately and automatically inverted, and a scientific and operable ecological restoration strategy is generated.

The invention provides a surface mine soft soil slope vegetation soil fixation method, and relates to the technical field of mine ecological restoration, and the method comprises the following steps: soft soil slope main body microtopography and pretreatment reconstruction, injection of a microorganism-induced calcium carbonate precipitation bacterial liquid into fish-scale pits and surrounding soil to form an in-situ reinforcement layer, gradient root plant community configuration and sowing. Plant communities are configured according to the gradient that herbaceous plants are planted in shallow soil, shrub plants are planted in middle soil and arbor plants are planted in deep soil, and degradable fiber grids loaded with slow-release hydrogel are laid. Vegetation is planted according to three gradients to provide long-term biological anchoring, the arbuscular mycorrhizal fungal spores wrapped on the seeds promote plants to absorb microorganisms to induce calcium carbonate to precipitate bacterial liquid byproducts, symbiotic circulation of microorganisms and plants is formed, and the problems of single plant root system soil fixation, single plant root system soil fixation and single plant root system soil fixation are solved. The root system development in soft soil is slow, and the soil fixation effect lags behind.

The embodiment of the invention provides a method for constructing a salt-tolerant plant group for ecological restoration based on a coastal region ash yard. The method comprises the following steps: selecting a planting region; soil improvement is conducted on the planting area; the first vegetation and the second vegetation are mixed and planted according to the seeding rate; field management and harvesting are conducted after sowing. According to the method, plant varieties suitable for being planted in the ash yard in the coastal area are screened, the growth environment of forage grass is improved by utilizing proper covering soil and a modifier, the activity of plants is increased, a self-sustaining, low-maintenance and high-stress-resistance plant community is established, and finally conversion of the ash yard from an industrial waste land to a functional ecological system is achieved.

The present application provides a kind of shrub directional replacement of Ordos region Artemisia ordosica ecological planting method, belongs to the technical field of ecological restoration in desertification area, as follows: S1, shrub screening and seedling raising: screening local dominant shrub of Ordos, using degradable nutrient bag to raise seedling, obtain bagged seedling;S2, inhibitor application: in target area, Artemisia ordosica inhibitor is sprayed to Artemisia ordosica, to inhibit the growth of Artemisia ordosica;S3, shrub directional planting: in the target area after inhibitor treatment, the bagged seedling is planted;S4, community structure optimization: in the gap between shrubs after planting, local gramineous grass seeds are sown, and mixed plant community structure is constructed;After the method of the present application, the height, coverage and density of Artemisia ordosica are significantly reduced, there is no rebound fluctuation, the stability and persistence of the inhibition effect are significantly improved, and the reduction of Artemisia ordosica population effectively reduces the regional pollen release amount, which relieves the problem of pollen allergy from the source.

The invention discloses an ecological restoration method for regulating and fixing heavy metals by utilizing a rhizosphere effect, and belongs to the technical field of water environment ecological restoration. According to the method, the pollution degree, form and release risk of target heavy metal in the sediment are determined through pollution diagnosis, then submerged plants with specific rhizosphere oxygen secreting and acidification capacity are screened in a targeted mode for single planting or mixed planting, a stable submerged plant community is constructed, iron and manganese oxides are formed through induction of the plant rhizosphere effect, and the target heavy metal in the sediment is obtained. According to the method, the in-situ remediation of heavy metal pollution is realized, the function of rhizosphere microflora is regulated and controlled, the form of the heavy metal with higher activity is converted into a stable form or is adsorbed and fixed on a rhizosphere iron membrane, meanwhile, the remediation process can be monitored through an in-situ high-resolution monitoring technology, and finally, the in-situ remediation of the heavy metal pollution and the collaborative restoration of a water ecosystem are realized. The method is clear in mechanism, high in pertinence, environment-friendly, low in cost and monitorable in effect, and can be widely applied to remediation of sediment heavy metal pollution of shallow water bodies such as lakes, river channels and ponds.

The invention discloses a method for ecologically restoring moderately degenerated Coilsein grassland. The method comprises the following steps: S1, investigating the degeneration condition of the Coilsein grassland; s2, investigating plant community characteristics and biomass; s3, determining the quality of the forage grass in the plant community; s4, collecting a soil sample; s5, reseeding, wherein the ratio of the agropyron crocea to the astragalus adsurgens is (2.5-3.5): 1; according to the method, appropriate grass seeds and fertilizer bags are screened out according to the plant community conditions of the moderately-degenerated Coerquin grassland, reseeding and fertilization are carried out, and finally the moderately-degenerated Coerquin grassland monoennial plants, biennial plants, perennial gramineae, hybrid grass and perennial leguminous plants all grow, so that the yield of the Coerquin grassland is increased, the yield of the Coerquin grassland is increased, and the yield of the Coerquin grassland is increased. The pH value of the soil tends to be neutral, the total nitrogen content of the soil is increased through fertilization, and moderately degenerated Coilin grassland vegetation is recovered.

This invention provides a method for constructing an ecological lake wetland aquatic plant and animal community system. The method includes dividing the lake to be restored into two zones according to water flow direction and terrain. Then, bottom sediment improvement, planting of submerged plants, addition of amendments, and algae-controlling zooplankton are carried out in each zone. Ecological floating islands are constructed and emergent plants are planted. Aquatic animals are introduced, followed by routine management. Water purification devices containing EHBR membrane modules are installed near the lake inlet and in areas with higher terrain. This constructs an ecological lake wetland aquatic plant and animal community, achieving long-term ecological restoration of the lake. Furthermore, the introduction of EHBR membrane modules can reduce organic pollutants in the lake at lower temperatures, significantly extending the restoration time and ensuring that the lake's water quality remains stable for an extended period.

This invention addresses the common problems in existing technologies for determining the succession stage of vegetation communities in ecological restoration areas, such as high misjudgment rates using single indicators, lack of scientific basis for threshold classification methods, and insufficient comprehensiveness and accuracy of determination results. It proposes and discloses a more comprehensive and accurate method for determining the succession stage of vegetation communities in ecological restoration areas. This method first systematically obtains multi-dimensional indicator data, including plant community structural characteristics, soil functional attributes, and ecosystem functional performance, through quadrat surveys. Then, it constructs a three-level indicator system comprising a target layer, a criterion layer, and an indicator layer. The relative weights of each determination indicator are scientifically determined using the analytic hierarchy process (AHP), and a comprehensive succession index is finally calculated. Based on pre-established criteria for determining the succession stage of vegetation communities, the specific succession stage of the plant community can be accurately and objectively determined.

The invention discloses a plant community configuration method and system based on carbon sequestration and aesthetics coupling and a medium, and belongs to the technical field of ecological civilization construction.The method comprises the steps that carbon sequestration benefit evaluation indexes are comprehensively evaluated, a first comprehensive score is obtained, and the first comprehensive score is used for reflecting the overall score of a quadrat in the aspect of carbon sequestration benefits; comprehensively evaluating the aesthetic benefit evaluation indexes to obtain a second comprehensive score which is used for reflecting the overall score of the quadrat in the aspect of aesthetic benefit; calculating the benign coupling degree of carbon sequestration and aesthetics based on the first comprehensive score and the second comprehensive score; and selecting a target quadrat based on the benign coupling degree, and carrying out plant community configuration based on the target quadrat. According to the method, carbon sequestration and aesthetic benefits are comprehensively evaluated, the benign coupling degree of the carbon sequestration and aesthetic benefits is calculated, plant community configuration is optimized according to the benign coupling degree, collaborative improvement of the ecological function and the landscape value is achieved, and scientific support is provided for urban landscaping.

The invention relates to an agricultural distribution machine (1) for distributing agricultural material, at least comprising: - a distribution rod (2) with at least two distribution sections (11, 12) movable relative to each other and with distribution units (3) arranged on the distribution sections (11, 12) for distributing the material to be distributed; - a sensor device (4) which is set up to detect a plant population (P) and to generate measured values. The invention is characterized by a determination unit (5) which is configured to determine at least one plant stand characteristic, preferably a plant stand density, based on the measured values ​​of the sensor device (4).