The invention provides a
loess plateau hilly and gully region small
watershed ecological characteristic
zoning treatment method and device, and the method comprises the steps: calculating the landscape
ecological risk index values of a plurality of towns in a
loess plateau hilly and gully region small
watershed for many years based on a landscape
ecological risk index model; based on the
ecological environment quality model, calculating multi-year
ecological environment quality values of a plurality of cities and towns in the small
watershed in the
loess plateau hilly-gully region; according to the multi-year landscape
ecological risk index values of the multiple cities and towns and the multi-year
ecological environment quality values of the multiple cities and towns, performing cumulative
frequency curve division, and according to a cumulative frequency set value, determining a landscape ecological high-risk critical value and an ecological environment high-quality critical value; and introducing the
landscape ecology high-risk critical value and the ecological environment high-quality critical value into a four-quadrant model, and determining ecological characteristic regions to which a plurality of cities and towns belong, so as to carry out partition treatment. According to the method, a key target region for ecological protection and restoration of the
drainage basin can be accurately identified, so that targeted
zoning treatment is facilitated.