43results about How to "The evaluation method is accurate" patented technology

The application discloses a river health evaluation method and device based on full-reach spatial difference analysis, and the method comprises the following steps: dividing full reaches of a target river basin into regions of different water body types according to river characteristics; selecting multiple evaluation indexes for each water body type region from preset criterion layers; obtaining index data of each evaluation index of each region in a preset time period; based on the index data, performing multiple coupling evaluations on each region by constructing a POME fuzzy evaluation model and a set pair analysis model based on triangular fuzzy numbers, to obtain an ecological health evaluation grade of each region; and analyzing relative differences existing in the ecological health of the full reaches of the river in space in each evaluation angle, to obtain a water body ecological health coordination condition of the target river basin. The application takes the ecological health of the full reaches of the river as a theme, distinguishes water bodies, evaluates the health condition of the river from a spatial angle, and provides a new thought and theoretical support for guiding river construction for decision makers.