3 results about "Ecosystem health" patented technology

This invention discloses a method and system for assessing the resilience of aquatic ecosystems based on dynamic baselines. The method includes: establishing a dynamic baseline; obtaining a time series sequence of the comprehensive water quality index of a target water body over historical periods; extracting the trend component, seasonal component, and residual component from the time series sequence of the comprehensive water quality index; constructing a dynamic baseline and its confidence interval that varies over time; and calculating an aquatic ecosystem resilience index based on an adaptive index, a self-repair index, and a self-purification index. This invention overcomes the shortcomings of existing static assessments and single-dimensional assessments by using a dynamic baseline and a three-dimensional resilience assessment framework, thereby improving the dynamics and comprehensive characterization of aquatic ecosystem resilience and enabling accurate diagnosis and adaptive evaluation of the health status of aquatic ecosystems.

The application discloses an intermittent river section ecological health evaluation method based on river ecosystem integrity. The application relates to the technical field of river ecosystem integrity evaluation, and aims to solve the problem that the current application of the existing river ecosystem integrity evaluation method cannot accurately indicate the health condition of the intermittent river section. The method establishes an evaluation index system of the ecological system integrity of the intermittent river section from three aspects of hydrology, habitat and biology, uses the analytic hierarchy process to give weights to the three systems, carries out weighted average to obtain the ecological health evaluation comprehensive score of the perennial river section and the intermittent river section, and comprehensively evaluates the health condition of the ecological system of the intermittent river section. The application makes up for the shortage that the current watershed water ecological system health evaluation method cannot be applied to the intermittent river section, and can reflect the ecological health condition of the intermittent river section.

This application relates to a method and system for assessing the health of island ecosystems. The method collects and standardizes multi-source ecological data from islands to generate an evaluation index matrix and assigns initial static weights. It then constructs a niche network and relationship matrix that characterizes the nonlinear interactions between indicators. Based on this, it calculates a comprehensive niche overlap index among the indicators and constructs an overlap matrix. Subsequently, based on the degree of deviation of each indicator's actual state and utilizing the conflict or synergistic relationships between indicators revealed by the overlap matrix, it dynamically adjusts the initial weights—that is, when an indicator deteriorates, it increases the weight of conflicting indicators and decreases the weight of synergistic indicators. Finally, it uses the dynamic weights to calculate a comprehensive health index and determine the health level. This overcomes the shortcomings of traditional fixed-weight evaluation methods that cannot reflect the dynamic relationships between indicators within the ecosystem, achieving a more accurate, sensitive, and ecologically sound assessment of the health status of island ecosystems.