3.2.2 Hanliu River
The distribution pattern of the stable snowpack area in the Hanliu River
is illustrated in Figure 8. During spring, the stable snowpack area is
relatively small, comprising only 1.39 percent of the total district
area. It is primarily concentrated in the higher elevation regions
surrounding the watershed, while no distribution is observed within the
watershed itself. Vertically, the proportion of area covered by stable
snowpack gradually increases with elevation. Stable snow cover is absent
below 4000 meters above sea level. In the elevation range of 4000-5000
meters, some stable snow is present, accounting for 3.08 percent of the
snow-covered area. However, the majority of stable snow during spring is
found in areas with altitudes exceeding 5000 meters.