Total runoff from precipitation 2001 (environmental atlas)

The total outflow from precipitation (long-year averages) is shown as means over the total area of the areas shown (sealed and unsealed parts and including the adjacent pro-road area)降水总径流量的多年平均值以所示区域的总面积为基准取均值展示，所示区域涵盖硬化地表区域、非硬化地表区域及毗邻道路区域。