The application discloses a water
ecological environment stability evaluation method and device based on
community diversity, and belongs to the technical field of water
ecological environment monitoring and evaluation. The method comprises the following steps: collecting environmental parameters and
community data of multiple sampling points in a target
water area; respectively calculating environmental distance matrices and
community dissimilarity matrices among samples; constructing a prediction model with environmental distance as the independent variable and community dissimilarity as the dependent variable; calculating the expected community dissimilarity of the target sample by using the prediction model, and comparing it with the measured value; and quantifying the
ecological stability of the
water area where the target sample is located according to the deviation between the two. Based on the theory of “space instead of time”, the application establishes an objective correlation between
environmental pressure and community response through a zero model, and solves the problems that traditional stability evaluation is highly dependent on long-term
monitoring data, has a long
evaluation period and is difficult to compare across points. The application is suitable for rapid evaluation in a single sampling scene, the
evaluation result is objective, and the application can be widely applied to
ecological health evaluation and
pollution early warning of rivers, lakes, reservoirs and other water areas.