5 results about "Functional diversity" patented technology

The present invention provides a method and device for detecting water ecological pressure based on machine learning. The method includes obtaining an aquatic organism monitoring data set, processing the aquatic organism monitoring data set to obtain a sample-species matrix; obtaining functional traits and pedigree information of aquatic organisms involved in the sample-species matrix, generating a species information matrix corresponding to the sample-species matrix, and generating a sample-environmental factor matrix corresponding to the sample-species matrix; determining a diversity index corresponding to a study area, the diversity index including a taxonomic diversity index, a functional diversity index, and a pedigree diversity index, and generating a sample-diversity index matrix corresponding to the sample-species matrix; constructing a structural equation model, determining the action path of each first influencing factor to be analyzed on the water ecology according to the ranking; and determining the water ecological pressure of the study area based on the action path of each first influencing factor to be analyzed on the water ecology.

This invention discloses a method for delineating restoration areas based on biodiversity and habitat stress in the field of natural resource management technology. The method includes acquiring species distribution records and environmental variable data for each species in a target spatial area, and then filtering the environmental variable data to obtain filtered environmental variable data. This invention processes the input data using multiple models in an integrated species distribution model to calculate species richness, functional diversity, and phylogenetic diversity as representative indicators. This overcomes the limitations of previous methods that only focused on a single dimension of biodiversity information, providing a more comprehensive representation of biodiversity levels. By constructing a comprehensive biodiversity index and a comprehensive habitat stress index to comprehensively identify priority restoration areas, this method avoids the limitations and shortcomings of previous methods that only focused on a single dimension of biodiversity, and fully considers the dynamic coupling relationship between biodiversity and habitat conditions.

The present invention provides a method for determining the threshold of the functional traits of river benthic animal communities under nutrient stress, which relates to the ecological technology field of benthic animal communities. The method for determining the threshold of the functional traits of the river benthic animal communities under nutrient stress not only overcomes the limitations of traditional species taxonomy methods, but also provides a more comprehensive and in-depth way to understand the relationship between benthic animal communities and environmental factors, providing a strong scientific basis for the health management and protection of river ecosystems; by using a random forest model, multiple nutrient indicators and environmental factors can be considered simultaneously, and the main driving factors can be identified through feature importance scoring to clarify the action intensity of different factors; by calculating the functional diversity index and constructing a site × trait abundance matrix, the specific functions of benthic animals in the ecosystem can be comprehensively reflected, exceeding the traditional species richness and diversity indicators.

The present invention relates to an intelligent fish community stability evaluation method and system based on a network model, the method comprising optimizing species distribution data based on the impact of a single species on community biodiversity and the impact of interspecific interactions on community structure, obtaining species distribution optimization data and constructing a community association network model; using a PCoA method to quantify the functional diversity overlap of species and construct a functional niche network model; constructing a comprehensive network model based on the community association network model and the functional niche network model; constructing a radar chart based on the community association network model, the functional niche network model and the comprehensive network model, and evaluating network stability based on the radar chart area method. The present invention can better reflect the lack of species interaction relationships caused by incomplete sampling, make the network structure more complex and closer to the actual situation, can deeply explore the interaction relationships between species, and improve the accuracy of evaluation results and the comparability between different biological community networks.

The invention relates to the technical field of biological information analysis, and discloses an aquatic organism community analysis method and device based on environmental DNA, the method comprises the following steps: obtaining an annotation file corresponding to a to-be-analyzed sample, the to-be-analyzed sample comprising a water body sample collected from a target area; obtaining an environment DNA database of a pre-constructed target area; the environment DNA database comprises hierarchical information and gene information of different species and different functional character information corresponding to different species; on the basis of the annotation file and the environment DNA database, diversity analysis is conducted on the aquatic organisms in the target area, and diversity comprises species diversity, functional diversity and gene diversity. According to the method, the annotation file and the pre-constructed environment DNA database are combined, so that the diversity of aquatic organisms in the target area can be comprehensively, quickly and accurately evaluated, and not only is the diversity of the species level, but also the diversity of the functional traits and the gene level is covered.