1 results about "Nonpoint source pollution" patented technology

This application belongs to the field of ecological and environmental protection technology, specifically relating to a method for delineating the width of river ecological buffer zones, aiming to address the shortcomings of traditional equal-width delineation methods in terms of pollution interception accuracy and land use efficiency. The method includes: extracting topographic and hydrological features based on a DEM and identifying key runoff paths to determine high-load inlets; constructing a spatial heterogeneity weighting factor by combining the average runoff accumulation, slope, and surface roughness of the upstream confluence area; dynamically calculating the buffer zone width at each inlet using a base width as a benchmark; generating boundaries by non-equidistant offset along the riverbank normal, and forming continuous closed polygons through smoothing and topological verification. This application, through hydrologically driven dynamic width adjustment, significantly improves the interception capacity for non-point source pollutants, avoids land resource waste, and achieves scientific, efficient, and automated ecological buffer zone delineation.